Skip to main content
Erschienen in: CardioVascular and Interventional Radiology 5/2014

Open Access 01.10.2014 | Clinical Investigation

Factors Associated with Aggravation of Esophageal Varices after B-RTO for Gastric Varices

verfasst von: Atsushi Jogo, Norifumi Nishida, Akira Yamamoto, Hiroto Matsui, Tohru Takeshita, Yukimasa Sakai, Toshiyuki Matsuoka, Kenji Nakamura, Yukio Miki

Erschienen in: CardioVascular and Interventional Radiology | Ausgabe 5/2014

Abstract

Purpose

To retrospectively evaluate risk factors for aggravation of esophageal varices (EV) within 1 year after balloon-occluded retrograde transvenous obliteration (B-RTO) of gastric varices (GV) and to clarify suitable timing for upper endoscopy to detect EV aggravation after B-RTO.

Methods

Participants included 67 patients who underwent B-RTO for GV between January 2006 and December 2010. Whether EV aggravation occurred within 1 year was evaluated, and the time interval from B-RTO to aggravation was calculated. Factors potentially associated with EV aggravation were analyzed.

Results

B-RTO was successfully performed in all patients. EV aggravation at 1 year after B-RTO was found in 38 patients (56.7 %). Multivariate logistic regression analysis showed that total bilirubin (T-bil) (P = 0.032) and hepatic venous pressure gradient (HVPG) (P = 0.011) were significant independent risk factors for EV aggravation after B-RTO. Cutoff values of T-bil and HVPG yielding maximal combined sensitivity and specificity for EV aggravation were 1.6 mg/dL and 13 mmHg, respectively. The patients with T-bil ≥ 1.6 mg/dL or HVPG ≥ 13 mmHg had a median aggravation time of 5.1 months. All five patients with ruptured EV belonged to this group. In contrast, patients with T-bil < 1.6 mg/dL and HVPG < 13 mmHg had a median aggravation time of 21 months.

Conclusion

T-bil and HVPG were significant independent risk factors for EV aggravation after B-RTO. The patients with T-bil ≥ 1.6 mg/dL or HVPG ≥ 13 mmHg require careful follow-up evaluation, including endoscopy.

Introduction

Gastric varices (GV) occur in 5–33 % of patients with portal hypertension [13]. Although the bleeding rate of GV is 5–25 %, lower than the rate of bleeding from esophageal varices (EV) [1, 4], the prognosis is worse than for EV once bleeding occurs, with a reported mortality rate of 45 % [1].
The concept of balloon-occluded retrograde transvenous obliteration (B-RTO) for GV was reported by Olson et al. [5], and the use of B-RTO was later expanded by Kanagawa et al. [68]. The treatment outcomes for GV are very good using this method, with recently reported bleeding rates after B-RTO of 2.7–3.2 % [9, 10]. However, worsening of EV and possible ascites due to portal hypertension after B-RTO are problems. Reportedly, the aggravation rate of EV was 27 % in the first year [9] and 66–67 % cumulatively [9, 11, 12]. Endoscopic examination for EV in cirrhotic patients has been recommended every 1–2 years [3]. Because early aggravation of EV is expected with worsening of portal hypertension after B-RTO, evaluation of risk factors for aggravation and the interval until the occurrence of aggravation are important. The purpose of this study was to retrospectively evaluate risk factors for aggravation of EV within 1 year after B-RTO and to determine when to perform upper endoscopy to detect aggravation of EV after B-RTO.

Materials and Methods

Patients

The ethics committee at our hospital deemed this retrospective study as appropriate for publication. The study initially included 164 consecutive patients who underwent B-RTO for GV between January 2006 and December 2010. Informed consent was obtained before the procedure. Treatment criteria for GV were as follows: (1) GV larger than F2 (moderately enlarged, beady varices, and/or red spot) as defined by the Japan Gastroenterological Endoscopy Society [13]; and/or (2) GV with diameter >5 mm on color Doppler endoscopic ultrasonography [14]; and/or (3) ruptured GV and primary hemostasis achieved. Treatment indications for B-RTO were a major portocaval shunt that, on the basis of preoperative computed tomography (CT), could anatomically be reached transvenously using a catheter, for example, by gastrorenal shunt, inferior phrenic vein, or pericardial vein. Sixty-seven patients were finally enrolled after excluding three patients who underwent selective B-RTO for preservation of a major portocaval shunt [15], nine patients who underwent scheduled treatment for EV during the same hospitalization, and 85 patients who were lost to follow-up (Table 1). Factors associated with aggravation of EV after B-RTO were statistically analyzed in these patients.
Table 1
Patient demographics
Characteristics
Value
Sex (M:F)
48:19
Age (years)
 Mean
67
 Median (range)
66 (34–81)
Cause of cirrhosis
 Alcohol
16
 Hepatitis B
5
 Hepatitis C
35
 Other
9
Biochemical data
67
 T-bil (mg/dL)
1.4 ± 0.7
 PT (%)
75 ± 13
 Alb (mg/dL)
3.3 ± 0.5
Child–Pugh classification
 A
43
 B
22
 C
2
MELD score
 Median
62
 Mean ± SD
9.7 ± 2.3
GV
 Lg-c
7
 Lg-f
27
 Lg-cf
33
 F1
0
 F2
36
 F3
31
EV before B-RTO
 F1
30
 F2
6
 F3
0
Data provided as median (range); n; or mean ± SD
T-bil total bilirubin, Alb albumin, PT prothrombin time, GV gastric varices, EV esophageal varices, B-RTO balloon-occluded retrograde transvenous obliteration, Lg-c adjacent to the cardiac orifice, Lg-cf extending from the cardiac orifice to the fornix, Lg-f distant from the cardiac orifice, F1 straight small-caliber varices, F2 moderately enlarged beady varices, F3 markedly enlarged nodular or tumor-shaped varices

B-RTO Procedure

In patients with gastrorenal shunt as the main draining vein (n = 65), a 6F balloon catheter with an 11- or 20-mm diameter balloon (Moiyan; Miyano, Osaka, Japan) was inserted into this vessel to perform the procedure. In addition, on the basis of preoperative CT, for more selective insertion of the catheter near the varices, a 9F/5F double coaxial balloon catheter system (Candis; Medikit, Tokyo, Japan) was used [16]. In patients (n = 2) without gastrorenal shunt in whom the main draining vein was the pericardial vein or inferior phrenic vein, a microballoon catheter (Iiguman; Fuji Systems, Tokyo, Japan) was inserted in the draining vein.
In all cases, if the varices were adequately visualized with B-RTO, the sclerosing agent was slowly injected until the feeding veins were visualized under fluoroscopic guidance. The sclerosing agent consisted of 5 % ethanolamine oleate iopamidol (EOI) mixed with 10 % ethanolamine oleate (Oldamin; Takeda Pharmaceutical, Osaka, Japan) and the same volume of nonionic contrast medium (iopamidol 300 mg I/mL, Iopamiron 300; Bayer Schering Pharma, Osaka, Japan). If the varices were not visualized because of the presence of collateral draining veins, downgrading [17] was performed by embolization of the collaterals using a combination of 50 % glucose injection and coils or stepwise injection of 5 % EOI. The inflated balloon catheter was left in place overnight, and if thrombosis was confirmed the next day under fluoroscopy, the balloon catheter was deflated and removed. If thrombosis was insufficient, a sclerosing agent was added, thrombosis was reconfirmed after 6–7 h, and then the balloon catheter was deflated and removed. If a large amount of sclerosing agent had to be used, the procedure was completed the next day.
The definition of technical success was disappearance of blood flow from GV on color Doppler endoscopy and/or dynamic CT within 2 weeks after B-RTO.

Definition of Aggravation for EV

Endoscopic findings of GV and EV were classified according to the criteria proposed by the Japanese Society for Portal Hypertension [13]. The form of varices was classified as follows: F1, straight small-caliber varices; F2, moderately enlarged, beady varices; and F3, markedly enlarged, nodular, or tumor-shaped varices. According to location, GV were classified as follows: adjacent to the cardiac orifice; distant from the cardiac orifice; or extending from the cardiac orifice to the fornix.
Aggravation of EV was defined on the basis of a comparison with endoscopy before B-RTO as worsening morphology, appearance of a red spot, development of new varices, or variceal rupture. Endoscopy was performed every 3–6 months after B-RTO. If anemia got worse or hematemesis occurred during observation, endoscopy was performed according to the circumstances. The number of days from time of B-RTO until aggravation of EV as confirmed by endoscopy was calculated, and whether aggravation of EV had occurred by the 1-year follow-up was evaluated.

Evaluation of Ascites

The existence of transient ascites was judged by CT within 1 month after B-RTO. Refractory ascites was determined by outpatient clinic examinations in patients followed more than 6 months after B-RTO.

Measurements of Drainage and Portal Vein Diameters

The diameter of the portal vein was estimated on contrast CT images at a point midway between the main bifurcation of the portal vein into the right and left main hepatic branches and the portal vein confluence. The diameter of the gastrorenal shunt was estimated from the short axis at the proximal side of the left renal vein [11].

Pressure Measurement

A 5F balloon catheter (Cobra; Selecon MP catheter; Terumo Clinical Supply, Gifu, Japan) was inserted through the femoral vein, and pressures were measured using a manometer (Polygraph MSC-7000; Fukuda Denshi, Tokyo, Japan) [18]. The measured parameters were right atrial pressure, hepatic venous pressure, and wedged hepatic venous pressure. Hepatic venous pressure gradient (HVPG) was calculated as the difference between wedged hepatic venous pressure and free hepatic vein pressure. In addition, the changes in HVPG before and after balloon occlusion of the drainage vein was also measured.

Statistical Analysis

All results are expressed as mean ± standard deviation (SD), median, or percentage. The rate of EV aggravation at 1 year after B-RTO was estimated in a univariate manner with Student’s t test and the χ 2 test using GraphPad Prism version 5.02 software (GraphPad Software, San Diego, CA) and in a multivariate manner using logistic regression with SAS for Windows version 9.3 (SAS Institute, Cary, NC). In all analyses, values of P < 0.05 were considered statistically significant. In univariate analysis, baseline status of age, sex, cause of cirrhosis, existence of EV or treatment history of EV before B-RTO, total bilirubin (T-bil) albumin, prothrombin time, sodium, platelets, Child–Pugh score, Model for End Stage Liver Disease (MELD) score, diameter of the drainage vein, diameter of the portal vein, HVPG, changes in HVPG, and volume of 5 % EOI were considered as covariates. In multivariate logistic regression, the baseline status of sex, cause of cirrhosis, T-bil, prothrombin time, diameter of drainage vein, HVPG, and volume of 5 % EOI were considered as covariates. The receiver operating characteristic (ROC) curve was drawn using JMP version 9.0.2 software (SAS Institute). The Youden index (sensitivity + specificity − 1) was used to select the optimal cutoff points on the ROC curves. The Kaplan–Meier method was used to estimate the median aggravation rate of EV after B-RTO, and the log-rank test was performed using GraphPad Prism software to compare Kaplan–Meier curves.

Results

Outcomes of B-RTO

B-RTO was successfully performed in all 67 patients (100 %). The mean volume of 5 % EOI used for B-RTO in 67 patients was 33.1 mL. Among 67 patients with GV treated with B-RTO, the median duration of endoscopy until aggravation of EV or last follow-up was 9.5 months (mean 11.7 ± 9.6 months, range 0.10–45.9 months). Aggravation of EV at 1 year after B-RTO was found in 38 patients (56.7 %), and the median aggravation time was 9.3 months. Five patients (7.5 %) experienced EV rupture after B-RTO, with times until rupture of 1.1, 1.6, 3.5, 4.6, and 9.3 months. All five patients underwent additional endoscopic treatment and were saved. All patients had EV or a treatment history of EV before B-RTO, and four of these patients had poor liver function, with a Child–Pugh class B or C. Ascites transiently developed or increased after B-RTO in eight of 60 patients (13.3 %). During a mean follow-up of 29.2 months (range 6–88 months) after B-RTO, refractory ascites was observed in one of 60 patients (1.7 %). This patient underwent endoscopic sclerotherapy for EV after 5 months and later underwent radiofrequency ablation for hepatocellular carcinoma. After 8 months, he underwent transjugular intrahepatic portosystemic shunt (TIPS) for refractory ascites.

Evaluation of Risk Factors for Aggravation of EV after B-RTO

Sex, existence of EV, or history of treatment for EV before B-RTO, T-bil, prothrombin time, MELD score, diameter of drainage vein, HVPG, the changes in HVPG after balloon occlusion of the drainage vein, and volume of 5 % EOI were all identified by univariate analysis as significant risk factors for aggravation of EV after B-RTO. Other variables including age, cause of cirrhosis, albumin, sodium, platelets, Child–Pugh score, and diameter of the portal vein were not significant factors in univariate analysis (Table 2).
Table 2
Univariate analysis for factors associated with aggravation for EV after B-RTO
Variable
n
Mean (range)
EV aggravation
95 % CI
P
(+)
(+)
(−)
(−)
Age
67
66 (34–81)
63.4 ± 10.0
60.1–66.7
0.051a
68.0 ± 8.7
64.7–71.3
Sex (male vs. female)
67
47 vs. 20
31 vs. 7
NA
0.019b
16 vs. 13
Cause of cirrhosis (alcohol vs. others)
67
16 vs. 51
12 vs. 26
NA
0.091b
4 vs. 25
Existence of EV or treatment history of EV before B-RTO (presence vs. absence)
67
40 vs. 27
27 vs. 11
NA
0.044b
13 vs. 16
T-bil (mg/dL)
67
1.4 (0.4–3.7)
1.6 ± 0.7
1.4–1.9
0.0005a
1.1 ± 0.5
0.9–1.2
Alb (mg/dL)
66
3.3 (2.1–4.5)
3.2 ± 0.4
3.1–3.4
0.12a
3.4 ± 0.5
3.2–3.6
PT (%)
66
75 (38–102)
72.4 ± 14.0
67.8–77.0
0.032a
79.5 ± 11.4
75.1–83.9
Na (mEq/L)
60
141 (132–148)
138.9 ± 9.9
136–142
0.17a
141.8 ± 2.3
141–143
Plt (×104/μL)
65
11.2 (2.3–67)
7.8 ± 3.6
6.6–9.0
0.15a
11.0 ± 12.6
6.1–15.8
Child–Pugh score
65
6.3 (5–10)
6.6 ± 1.5
6.0–6.9
0.18a
6.0 ± 1.1
5.6–6.5
MELD score
62
9.7 (6.4–16.9)
10.5 ± 0.4
9.7–11.3
0.0014a
8.6 ± 0.6
8.0–9.3
Diameter on CT
 Drainage vein (mm)
60
10 (5–22)
11.5 ± 4.4
9.9–13.0
0.021a
9.0 ± 3.4
7.7–10.4
 Portal vein (mm)
60
12 (6–20)
12.3 ± 3.1
11.2–13.4
0.34a
11.6 ± 2.5
10.6–12.6
HVPG (mmHg)
46
13 (3–27)
14.5 ± 6.2
12.2–16.8
0.0007a
8.2 ± 2.3
6.7–9.7
Changes in HVPG
42
2.5 (0–9)
1.7 ± 1.7
1.0–2.3
0.022a
4.2 ± 2.7
1.7–4.9
Amount of 5 % EOI (mL)
63
33 (7–80)
37.1 ± 21.7
29.9–44.3
0.043a
27.1 ± 13.2
21.6–32.5
Data provided as median (range); n; or mean ± SD
EV esophageal varices, B-RTO balloon-occluded retrograde transvenous obliteration, CI confidence interval, HVPG hepatic venous pressure gradient, EV esophageal varices, T-bil total bilirubin, Alb albumin, PT prothrombin time, Plt platelets, CT computed tomography, MELD model for end stage liver disease, EOI ethanolamine oleate iopamidol
aStatistical comparisons performed by Student’s t test
bStatistical analysis was estimated by χ 2 test
All variables detected as significant by univariate analysis were then examined by multivariate analysis to identify independent significant factors. A logistic regression model using multivariate analysis showed T-bil (hazard ratio 83.3; 95 % CI 0.001–0.69; P for trend = 0.032) and HVPG (hazard ratio 0.011; 95 % CI 0.33–0.87; P for trend = 0.011) as independent significant risk factors for aggravation of EV after B-RTO (Table 3). In addition, ROC curves were used to determine the cutoff values of T-bil and HVPG yielding the highest combined sensitivity and specificity with respect to aggravation of EV. These values were 1.6 mg/dL and 13 mmHg, respectively. Areas under the ROC curve for T-bil and HVPG were 0.76 and 0.75, respectively (Fig. 1). Using these cutoff values, we divided these patients into following three groups: group A, T-bil ≥ 1.6 mg/dL and HVPG ≥ 13 mmHg (n = 12); group B, T-bil ≥ 1.6 mg/dL or HVPG ≥ 13 mmHg (n = 25); and group C, T-bil < 1.6 mg/dL and HVPG < 13 mmHg (n = 7). The median times to aggravation of EV after B-RTO were 3.8 months in group A, 5.1 in group B, and 21 in group C. A significant difference in aggravation time was found between groups A and C (P = 0.001) and groups B and C (P = 0.002) (Fig. 2B). In group A, all 12 patients experienced aggravation within 8 months. All 5 patients with ruptured EV belonged to group B.
Table 3
Multivariate analysis of aggravation factors for esophageal varices after balloon-occluded retrograde transvenous obliteration
Variable
HR
95 % CI
P
T-bil
82.4
1.46–>999.9
0.032
MELD score
0.75
0.28–0.76
0.58
HVPG
1.87
1.16–3.01
0.011
HR hazard ratio, CI confidence interval, T-bil total bilirubin, MELD model for end stage liver disease, HVPG hepatic venous pressure gradient

Discussion

The mechanism of B-RTO-related aggravation of EV involves changes in hemodynamics, including changes in pressure and blood flow associated with shunt occlusion [11, 19]. Our results of univariate analysis showed that sex, history of EV or treatment for EV before B-RTO, T-bil, prothrombin time, MELD score, draining vein diameter, HVPG, changes in HVPG, and volume of 5 % EOI were significant risk factors. Multivariate analysis identified T-bil and HVPG as independent factors significantly associated with aggravation.
Endoscopic examination for EV in cirrhotic patients has been recommended every 1–2 years [3]. However, the optimal follow-up period with endoscopy after B-RTO has not yet been reported. In our study, the median time to aggravation of EV in patients with T-bil ≥ 1.6 mg/dL and HVPG ≥ 13 mmHg was 3.8 months, and all those patients showed aggravation of EV within 8 months. The patients with T-bil ≥ 1.6 mg/dL or HVPG ≥ 13 mmHg showed a median aggravation time of 5.1 months. Moreover, all patients with ruptured EV after B-RTO satisfied these conditions. These types of patients require careful follow-up evaluation, including endoscopy at shorter follow-up intervals. An optional therapy such as selective B-RTO or addition of TIPS after B-RTO might prevent excessive worsening of portal hypertension [20]. In some high-risk patients, TIPS alone or no treatment might be a therapeutic option. On the other hand, patients with T-bil < 1.6 mg/dL and HVPG < 13 mmHg had a median aggravation time of 21 months. The aggravation risk of EV was considered to be relatively low in these patients.
Higher T-bil values before B-RTO were associated with significant aggravation of EV after B-RTO, with a cutoff value of 1.6 mg/dL. Scheig [21] and Malinchoc et al. [22] reported bilirubin as one of the better liver function tests because the liver must take bilirubin away from the albumin to which it is bound in the circulation, conjugate it, and excrete it into the bile, thus representing a truly complete series of reactions. In a study of 39 patients, Elsamman et al. [11] found that a higher Child–Pugh class was associated with aggravation of EV after B-RTO. Currently, albumin level, encephalopathy, and ascites can be altered by medical intervention, including administration of branched-chain amino acids, Zn preparations, and diuretics [23]. These may be one of the reasons why the Child–Pugh score was not significantly associated with aggravation in this study, though the patients with ruptured EV after B-RTO had mostly poor liver function before B-RTO [24, 25]. In univariate analysis, the MELD score was a risk factor while the Child–Pugh score was not. The MELD score reflects survival after TIPS in end-stage liver disease [22, 26, 27]. This model is superior to the Child–Pugh score in predicting survival [22]. It uses renal function because renal dysfunction carries a poor prognosis. In general, renal function is not directly associated with aggravation of EV. This may be one of the reasons why T-bil outperformed MELD in our multivariate analysis.
Higher HVPG values before B-RTO were also associated with significant aggravation of EV after B-RTO, with a cutoff value of 13 mmHg. Portal pressure has been shown to correlate closely with severity of liver cirrhosis, as assessed by liver biopsy [28, 29]. Silkauskaite et al. [30] reported that HVPG also correlates with severity of liver disease, size of varices, and bleeding status. Garcia-Tsao et al. [31] reported that HVPG >12 mmHg is necessary for the occurrence of variceal hemorrhage and for the appearance of gastroesophageal varices. The changes in pressure from before to after B-RTO have also occasionally been reported. In a study of 20 cirrhotic patients, Tanihata et al. [18] reported that a ≥5 mmHg increase in the portal systemic pressure gradient (PSPG) after B-RTO was a factor associated with aggravation of EV. On the other hand, in a study of 24 cirrhotic patients, Hayashi et al. [32] found no significant changes in wedged hepatic venous pressure or HVPG after B-RTO. In our study, changes in HVPG were not significant in multivariate analysis. Although there is still room for discussion, our findings showed that HVPG before B-RTO. In other words, baseline portal pressure had an impact on aggravation of EV after B-RTO.
Univariate analysis showed that a history of EV or treatment for EV before B-RTO was significantly associated with aggravation. The presence of EV on endoscopy before B-RTO as a significant aggravation factor for EV after B-RTO has occasionally been reported [9, 11]. Higher F stage of GV before B-RTO also tends to be an aggravating factor for EV after B-RTO [33]. Moreover, in a study on the hemodynamics of extrahepatic collaterals using portography from the superior mesenteric artery before B-RTO, patients with a higher number of collateral routes such as a paraesophageal vein, compared to a gastrorenal shunt or gastric-inferior phrenic vein shunt alone, displayed a significantly higher rate of EV aggravation after B-RTO [32]. Our findings in this study are in general agreement with those reports.
In addition, as the draining vein diameter became larger or the volume of EOI used increased, EV showed significantly higher risk of aggravation. Draining vein diameter or volume of EOI used may reflect the volume of the embolized area. If the volume of the embolized area is large, the volume of interrupted blood flow is also larger, and EV may thus be aggravated.
The rate of EV aggravation in the first year after B-RTO in our study was high, at 56.7 %. Differences in the rate of EV aggravation after B-RTO have been reported in recent studies, ranging from 17 to 63 % [911, 18, 33, 34]. This is due to differences in how aggravation of EV is defined and in the duration of follow-up. Some reports have defined EV aggravation as when “varices become enlarged, tortuous, or large and coil shaped, or when a red spot is observed” [18, 33, 34]. On the other hand, other reports have defined EV aggravation as when “red spots on EV and/or bleeding of EV is detected” [911].
Development of refractory ascites after B-RTO may become an issue [20]. We experienced only one patient who developed refractory ascites after B-RTO in 67 patients. Furthermore, the patient underwent treatments for EV and hepatocellular carcinoma, which might be also related to development of refractory ascites. In this study, the follow-up time was relatively short (mean, 26 months). Further study of refractory ascites is needed.
Various limitations must be considered when interpreting the results of the present study. These include the retrospective nature of the study and a follow-up interval for endoscopy ranging from 3 to 6 months. Eighty-five patients were lost to follow-up, which may affect the results. In addition, patients treated for EV during the same hospitalization were excluded; such cases may have involved early aggravation of EV after B-RTO.
In conclusion, T-bil levels and HVPG were identified as independent risk factors for aggravation of EV at 1 year after B-RTO. The patients with T-bil ≥1.6 mg/dL or HVPG ≥13 mmHg had median aggravation time of 5.1 months after B-RTO. These types of patients require careful follow-up evaluation, including endoscopy.

Conflict of interest

The authors declare that they have no conflict of interest.
Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

Unsere Produktempfehlungen

e.Med Interdisziplinär

Kombi-Abonnement

Für Ihren Erfolg in Klinik und Praxis - Die beste Hilfe in Ihrem Arbeitsalltag

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de.

e.Med Innere Medizin

Kombi-Abonnement

Mit e.Med Innere Medizin erhalten Sie Zugang zu CME-Fortbildungen des Fachgebietes Innere Medizin, den Premium-Inhalten der internistischen Fachzeitschriften, inklusive einer gedruckten internistischen Zeitschrift Ihrer Wahl.

e.Med Radiologie

Kombi-Abonnement

Mit e.Med Radiologie erhalten Sie Zugang zu CME-Fortbildungen des Fachgebietes Radiologie, den Premium-Inhalten der radiologischen Fachzeitschriften, inklusive einer gedruckten Radiologie-Zeitschrift Ihrer Wahl.

Literatur
1.
Zurück zum Zitat Sarin SK, Lahoti D, Saxena SP et al (1992) Prevalence, classification and natural history of gastric varices: a long-term follow-up study in 568 portal hypertension patients. Hepatology 16:1343–1349 PubMedCrossRef Sarin SK, Lahoti D, Saxena SP et al (1992) Prevalence, classification and natural history of gastric varices: a long-term follow-up study in 568 portal hypertension patients. Hepatology 16:1343–1349 PubMedCrossRef
2.
Zurück zum Zitat Sarin SK, Sachdev G, Nanda R et al (1988) Endoscopic sclerotherapy in the treatment of gastric varices. Br J Surg 75:747–750PubMedCrossRef Sarin SK, Sachdev G, Nanda R et al (1988) Endoscopic sclerotherapy in the treatment of gastric varices. Br J Surg 75:747–750PubMedCrossRef
4.
Zurück zum Zitat Rose JD, Smith PM (1991) The management of variceal bleeding. Baillieres Clin Gastroenterol 5(3 pt 1):511–535PubMedCrossRef Rose JD, Smith PM (1991) The management of variceal bleeding. Baillieres Clin Gastroenterol 5(3 pt 1):511–535PubMedCrossRef
5.
Zurück zum Zitat Olson E, Yune HY, Klatte EC (1984) Transrenal-vein reflux ethanol sclerosis of gastroesophageal varices. AJR Am J Roentgenol 143:627–628PubMedCrossRef Olson E, Yune HY, Klatte EC (1984) Transrenal-vein reflux ethanol sclerosis of gastroesophageal varices. AJR Am J Roentgenol 143:627–628PubMedCrossRef
6.
Zurück zum Zitat Saad WE (2011) The history and evolution of balloon-occluded retrograde transvenous obliteration (BRTO): from the United States to Japan and back. Semin Interv Radiol 28:283–287CrossRef Saad WE (2011) The history and evolution of balloon-occluded retrograde transvenous obliteration (BRTO): from the United States to Japan and back. Semin Interv Radiol 28:283–287CrossRef
7.
Zurück zum Zitat Kanagawa H, Mima S, Kouyama H et al (1996) Treatment of gastric fundal varices by balloon-occluded retrograde transvenous obliteration. J Gastroenterol Hepatol 11:51–58PubMedCrossRef Kanagawa H, Mima S, Kouyama H et al (1996) Treatment of gastric fundal varices by balloon-occluded retrograde transvenous obliteration. J Gastroenterol Hepatol 11:51–58PubMedCrossRef
8.
Zurück zum Zitat Hirota S, Kobayashi K, Maeda H et al (2006) Balloon-occluded retrograde transvenous obliteration for portal hypertension. Radiat Med 24:315–320PubMedCrossRef Hirota S, Kobayashi K, Maeda H et al (2006) Balloon-occluded retrograde transvenous obliteration for portal hypertension. Radiat Med 24:315–320PubMedCrossRef
9.
Zurück zum Zitat Ninoi T, Nishida N, Kaminou T et al (2005) Balloon-occluded retrograde transvenous obliteration of gastric varices with gastrorenal shunt: long-term follow-up in 78 patients. AJR Am J Roentgenol 184:1340–1346PubMedCrossRef Ninoi T, Nishida N, Kaminou T et al (2005) Balloon-occluded retrograde transvenous obliteration of gastric varices with gastrorenal shunt: long-term follow-up in 78 patients. AJR Am J Roentgenol 184:1340–1346PubMedCrossRef
10.
Zurück zum Zitat Akahoshi T, Hashizume M, Tomikawa M et al (2008) Long-term results of balloon-occluded retrograde transvenous obliteration for gastric variceal bleeding and risky gastric varices: a 10-year experience. J Gastroenterol Hepatol 23:1702–1709PubMedCrossRef Akahoshi T, Hashizume M, Tomikawa M et al (2008) Long-term results of balloon-occluded retrograde transvenous obliteration for gastric variceal bleeding and risky gastric varices: a 10-year experience. J Gastroenterol Hepatol 23:1702–1709PubMedCrossRef
11.
Zurück zum Zitat Elsamman MK, Fujiwara Y, Kameda N et al (2009) Predictive factors of worsening of esophageal varices after balloon-occluded retrograde transvenous obliteration in patients with gastric varices. Am J Gastroenterol 104:2214–2221PubMedCrossRef Elsamman MK, Fujiwara Y, Kameda N et al (2009) Predictive factors of worsening of esophageal varices after balloon-occluded retrograde transvenous obliteration in patients with gastric varices. Am J Gastroenterol 104:2214–2221PubMedCrossRef
12.
Zurück zum Zitat Cho SK, Shin SW, Lee IH et al (2007) Balloon-occluded retrograde transvenous obliteration of gastric varices: outcomes and complications in 49 patients. AJR Am J Roentgenol 189:W365–W372PubMedCrossRef Cho SK, Shin SW, Lee IH et al (2007) Balloon-occluded retrograde transvenous obliteration of gastric varices: outcomes and complications in 49 patients. AJR Am J Roentgenol 189:W365–W372PubMedCrossRef
13.
Zurück zum Zitat Idezuki Y (1995) General rules for recording endoscopic findings of esophagogastric varices (1991). Japanese Society for Portal Hypertension. World J Surg 19:420–422PubMedCrossRef Idezuki Y (1995) General rules for recording endoscopic findings of esophagogastric varices (1991). Japanese Society for Portal Hypertension. World J Surg 19:420–422PubMedCrossRef
14.
Zurück zum Zitat Kim T, Shijo H, Kokawa H et al (1997) Risk factors for hemorrhage from gastric fundal varices. Hepatology 25:307–312PubMedCrossRef Kim T, Shijo H, Kokawa H et al (1997) Risk factors for hemorrhage from gastric fundal varices. Hepatology 25:307–312PubMedCrossRef
15.
Zurück zum Zitat Nishida N, Ninoi T, Kitayama T et al (2006) Selective balloon-occluded retrograde transvenous obliteration of gastric varix with preservation of major portacaval shunt. AJR Am J Roentgenol 186:1155–1157PubMedCrossRef Nishida N, Ninoi T, Kitayama T et al (2006) Selective balloon-occluded retrograde transvenous obliteration of gastric varix with preservation of major portacaval shunt. AJR Am J Roentgenol 186:1155–1157PubMedCrossRef
16.
Zurück zum Zitat Tanoue S, Kiyosue H, Matsumoto S et al (2006) Development of a new coaxial balloon catheter system for balloon-occluded retrograde transvenous obliteration (B-RTO). Cardiovasc Interv Radiol 29:991–996CrossRef Tanoue S, Kiyosue H, Matsumoto S et al (2006) Development of a new coaxial balloon catheter system for balloon-occluded retrograde transvenous obliteration (B-RTO). Cardiovasc Interv Radiol 29:991–996CrossRef
17.
Zurück zum Zitat Fukuda T, Hirota S, Sugimoto K et al (2005) “Downgrading” of gastric varices with multiple collateral veins in balloon-occluded retrograde transvenous obliteration. J Vasc Interv Radiol 16:1379–1383PubMedCrossRef Fukuda T, Hirota S, Sugimoto K et al (2005) “Downgrading” of gastric varices with multiple collateral veins in balloon-occluded retrograde transvenous obliteration. J Vasc Interv Radiol 16:1379–1383PubMedCrossRef
18.
Zurück zum Zitat Tanihata H, Minamiguchi H, Sato M et al (2009) Changes in portal systemic pressure gradient after balloon-occluded retrograde transvenous obliteration of gastric varices and aggravation of esophageal varices. Cardiovasc Interv Radiol 32:1209–1216CrossRef Tanihata H, Minamiguchi H, Sato M et al (2009) Changes in portal systemic pressure gradient after balloon-occluded retrograde transvenous obliteration of gastric varices and aggravation of esophageal varices. Cardiovasc Interv Radiol 32:1209–1216CrossRef
19.
Zurück zum Zitat Sato T, Yamazaki K, Toyota J et al (2006) Usefulness of electronic radial endoscopic color Doppler ultrasonography in esophageal varices: comparison with convex type. J Gastroenterol 41:28–33PubMedCrossRef Sato T, Yamazaki K, Toyota J et al (2006) Usefulness of electronic radial endoscopic color Doppler ultrasonography in esophageal varices: comparison with convex type. J Gastroenterol 41:28–33PubMedCrossRef
20.
Zurück zum Zitat Saad WE, Wagner CC, Lippert A et al (2013) Protective value of TIPS against the development of hydrothorax/ascites and upper gastrointestinal bleeding after balloon-occluded retrograde transvenous obliteration (BRTO). Am J Gastroenterol 108:1612–1619PubMedCrossRef Saad WE, Wagner CC, Lippert A et al (2013) Protective value of TIPS against the development of hydrothorax/ascites and upper gastrointestinal bleeding after balloon-occluded retrograde transvenous obliteration (BRTO). Am J Gastroenterol 108:1612–1619PubMedCrossRef
21.
Zurück zum Zitat Scheig R (1996) Evaluation of tests used to screen patients with liver disorders. Prim Care 23:551–560PubMedCrossRef Scheig R (1996) Evaluation of tests used to screen patients with liver disorders. Prim Care 23:551–560PubMedCrossRef
22.
Zurück zum Zitat Malinchoc M, Kamath PS, Gordon FD et al (2000) A model to predict poor survival in patients undergoing transjugular intrahepatic portosystemic shunts. Hepatology 31:864–871PubMedCrossRef Malinchoc M, Kamath PS, Gordon FD et al (2000) A model to predict poor survival in patients undergoing transjugular intrahepatic portosystemic shunts. Hepatology 31:864–871PubMedCrossRef
23.
Zurück zum Zitat Muto Y, Sato S, Watanabe A et al (2005) Effects of oral branched-chain amino acid granules on event-free survival in patients with liver cirrhosis. Clin Gasteroenterol Hepatol 3:705–713CrossRef Muto Y, Sato S, Watanabe A et al (2005) Effects of oral branched-chain amino acid granules on event-free survival in patients with liver cirrhosis. Clin Gasteroenterol Hepatol 3:705–713CrossRef
24.
25.
Zurück zum Zitat Pugh RNH, Murray-Lyon IM, Dawson JL et al (1973) Transection of the oesophagus for bleeding oesophageal varices. Br J Surg 60:646–649PubMedCrossRef Pugh RNH, Murray-Lyon IM, Dawson JL et al (1973) Transection of the oesophagus for bleeding oesophageal varices. Br J Surg 60:646–649PubMedCrossRef
26.
Zurück zum Zitat Ferral H, Gamboa P, Postoak DW et al (2004) Survival after elective transjugular intrahepatic portosystemic shunt creation: prediction with model for end-stage liver disease score. Radiology 231:231–236PubMedCrossRef Ferral H, Gamboa P, Postoak DW et al (2004) Survival after elective transjugular intrahepatic portosystemic shunt creation: prediction with model for end-stage liver disease score. Radiology 231:231–236PubMedCrossRef
27.
Zurück zum Zitat Gaba RC, Shah KD, Couture PM et al (2013) Within-patient temporal variance in MELD score and impact on survival prediction after TIPS creation. Ann Hepatol 12:797–802PubMed Gaba RC, Shah KD, Couture PM et al (2013) Within-patient temporal variance in MELD score and impact on survival prediction after TIPS creation. Ann Hepatol 12:797–802PubMed
28.
Zurück zum Zitat Krogsgaard K, Gluud C, Henriksen JH, Christoffersen P (1984) Correlation between liver morphology and portal pressure in alcoholic liver disease. Hepatology 4:699–703PubMedCrossRef Krogsgaard K, Gluud C, Henriksen JH, Christoffersen P (1984) Correlation between liver morphology and portal pressure in alcoholic liver disease. Hepatology 4:699–703PubMedCrossRef
29.
Zurück zum Zitat Picchiotti R, Mingazzini PL, Scucchi L et al (1994) Correlations between sinusoidal pressure and liver morphology in cirrhosis. J Hepatol 20:364–369PubMedCrossRef Picchiotti R, Mingazzini PL, Scucchi L et al (1994) Correlations between sinusoidal pressure and liver morphology in cirrhosis. J Hepatol 20:364–369PubMedCrossRef
30.
Zurück zum Zitat Silkauskaite V, Pranculis A, Mitraite D et al (2009) Hepatic venous pressure gradient measurement in patients with liver cirrhosis: a correlation with disease severity and variceal bleeding. Medicina 45:8–13PubMed Silkauskaite V, Pranculis A, Mitraite D et al (2009) Hepatic venous pressure gradient measurement in patients with liver cirrhosis: a correlation with disease severity and variceal bleeding. Medicina 45:8–13PubMed
31.
Zurück zum Zitat Garcia-Tsao G, Groszmann RJ, Fisher RL et al (1985) Portal pressure, presence of gastroesophageal varices and variceal bleeding. Hepatology 5:419–424PubMedCrossRef Garcia-Tsao G, Groszmann RJ, Fisher RL et al (1985) Portal pressure, presence of gastroesophageal varices and variceal bleeding. Hepatology 5:419–424PubMedCrossRef
32.
Zurück zum Zitat Hayashi S, Saeki S, Hosoi H et al (1998) A clinical and portal hemodynamic analysis for obliteration of gastric-renal shunt communicated with gastric fundic varices. Nihon Shokakibyo Gakkai Zasshi 95:755–763PubMed Hayashi S, Saeki S, Hosoi H et al (1998) A clinical and portal hemodynamic analysis for obliteration of gastric-renal shunt communicated with gastric fundic varices. Nihon Shokakibyo Gakkai Zasshi 95:755–763PubMed
33.
Zurück zum Zitat Nakamura S, Torii N, Yatsuji S et al (2008) Long-term follow up of esophageal varices after balloon-occluded retrograde transvenous obliteration for gastric varices. Hepatol Res 38:340–347PubMedCrossRef Nakamura S, Torii N, Yatsuji S et al (2008) Long-term follow up of esophageal varices after balloon-occluded retrograde transvenous obliteration for gastric varices. Hepatol Res 38:340–347PubMedCrossRef
34.
Zurück zum Zitat Kitamoto M, Imamura M, Kamada K et al (2002) Balloon-occluded retrograde transvenous obliteration of gastric fundal varices with hemorrhage. AJR Am J Roentgenol 178:1167–1174PubMedCrossRef Kitamoto M, Imamura M, Kamada K et al (2002) Balloon-occluded retrograde transvenous obliteration of gastric fundal varices with hemorrhage. AJR Am J Roentgenol 178:1167–1174PubMedCrossRef
Metadaten
Titel
Factors Associated with Aggravation of Esophageal Varices after B-RTO for Gastric Varices
verfasst von
Atsushi Jogo
Norifumi Nishida
Akira Yamamoto
Hiroto Matsui
Tohru Takeshita
Yukimasa Sakai
Toshiyuki Matsuoka
Kenji Nakamura
Yukio Miki
Publikationsdatum
01.10.2014
Verlag
Springer US
Erschienen in
CardioVascular and Interventional Radiology / Ausgabe 5/2014
Print ISSN: 0174-1551
Elektronische ISSN: 1432-086X
DOI
https://doi.org/10.1007/s00270-013-0809-6

Weitere Artikel der Ausgabe 5/2014

CardioVascular and Interventional Radiology 5/2014 Zur Ausgabe

Akuter Schwindel: Wann lohnt sich eine MRT?

28.04.2024 Schwindel Nachrichten

Akuter Schwindel stellt oft eine diagnostische Herausforderung dar. Wie nützlich dabei eine MRT ist, hat eine Studie aus Finnland untersucht. Immerhin einer von sechs Patienten wurde mit akutem ischämischem Schlaganfall diagnostiziert.

Screening-Mammografie offenbart erhöhtes Herz-Kreislauf-Risiko

26.04.2024 Mammografie Nachrichten

Routinemäßige Mammografien helfen, Brustkrebs frühzeitig zu erkennen. Anhand der Röntgenuntersuchung lassen sich aber auch kardiovaskuläre Risikopatientinnen identifizieren. Als zuverlässiger Anhaltspunkt gilt die Verkalkung der Brustarterien.

S3-Leitlinie zu Pankreaskrebs aktualisiert

23.04.2024 Pankreaskarzinom Nachrichten

Die Empfehlungen zur Therapie des Pankreaskarzinoms wurden um zwei Off-Label-Anwendungen erweitert. Und auch im Bereich der Früherkennung gibt es Aktualisierungen.

Fünf Dinge, die im Kindernotfall besser zu unterlassen sind

18.04.2024 Pädiatrische Notfallmedizin Nachrichten

Im Choosing-Wisely-Programm, das für die deutsche Initiative „Klug entscheiden“ Pate gestanden hat, sind erstmals Empfehlungen zum Umgang mit Notfällen von Kindern erschienen. Fünf Dinge gilt es demnach zu vermeiden.

Update Radiologie

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.