Clinical efficacy of enhanced recovery after surgery (ERAS) program in patients undergoing radical prostatectomy: a systematic review and meta-analysis
verfasst von:
Yurong Zhao, Shaobo Zhang, Bianjiang Liu, Jie Li, Hanxia Hong
Enhanced recovery after surgery (ERAS) protocol has been identified to be beneficial in the amount of operations such as gastrointestinal surgery. However, the efficacy and safety in robot-assisted laparoscopic prostatectomy/laparoscopic radical prostatectomy (RALP/LRP) still remain controversial.
Method
We searched randomized controlled trials and retrospective cohort studies comparing ERAS versus conventional care for prostate cancer patients who have undergone RALP/LRP. ERAS-related data were extracted, and quality of included studies was assessed using the Newcastle-Ottawa quality assessment scale and the Jadad scale.
Result
As a result, seven trials containing 784 prostate cancer patients were included. ERAS was observed to be significantly associated with shorter length of hospital stay (SMD − 2.55, 95%CI − 3.32 to − 1.78, P < 0.05), shorter time to flatus (SMD − 1.55, 95%CI − 2.26 to − 0.84, P < 0.05), shorter time to ambulate (SMD − 6.50, 95%CI − 10.91 to − 2.09, P < 0.05), shorter time to defecate (SMD − 2.80, 95%CI − 4.56 to − 1.04, P < 0.05), and shorter time to remove drainage tube (SMD − 2.72, 95%CI − 5.31 to − 0.12, P < 0.05). Otherwise, no significant difference was reported in other measurements.
Conclusions
In conclusion, ERAS can reduce length of hospital stay, time to flatus, time to defecate, time to ambulate, and time to remove drainage tube in prostate cancer patients who have undergone RALP/LRP compared with conventional care.
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Introduction
Enhanced recovery after surgery (ERAS), firstly introduced by Danish Doctor Wilmore and Kehlet, consists of a series of evidence-based procedures for optimizing perioperative treatment [1]. ERAS was designed to reduce the length of hospital stay, relieve patients’ psychological stress response, and reduce perioperative complications [2].
Prostate cancer is the most common cancer of the genitourinary tract in men [3]. Sufficient evidences have shown that compared with open radical prostatectomy (ORP), robot-assisted laparoscopic prostatectomy/laparoscopic radical prostatectomy (RALP/LRP) is associated with lower blood loss and transfusion rate, as well as less hospitalization duration [4‐6]. However, when it comes to the postoperative complications and functional outcome, no significant difference was reported between RALP/LRP and ORP [4, 5]. Until now, there was still the lack of well-recognized study exploring the clinical efficacy and safety of the ERAS program in RALP/LRP, which hindered the wide application of ERAS program in patients with prostate cancer.
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Nowadays, ERAS has been applied in various aspects such as gastrointestinal surgery and gynecological surgery and promoted its advantages. In this study, we are aimed to perform a systematic review and meta-analysis to qualitatively and quantitatively compare the EARS program with conventional care (TC) to evaluate the clinical efficacy and safety of ERAS program for prostate cancer patients who have undergone RALP/LRP.
Methods
Literature search
This systematic review and meta-analysis was strictly guided by the PRISMA principles, and the checklist of PRISMA was presented in Supplemental Table 1. Literature review was comprehensively carried out in the following databases: Medline (via PubMed), Embase, the Cochrane Central Register of Controlled Trials (Cochrane Library), WANFANG, and CNKI databases, to screen published articles reporting the outcomes of ERAS program application in the RP patients. Following Medical Subject Headings (MeSH) search terms were used: [“fast-track surgery” OR “fast-track rehabilitation” OR “enhanced recovery protocol” OR “enhanced recovery after surgery”] AND [“prostatic Neoplasms” OR “prostate tumor” OR “prostatic cancer” OR “prostatectomy” OR “radical prostatectomy”]. To sort out any study which might have been missed, we checked reference lists of all related articles and published abstracts from authoritative academic conferences.
Inclusion and exclusion criteria
Eligible studies were identified according to following inclusion criteria: (1) studies which was designed to compare the group treated with ERAS program with TC program in patients who underwent RALP/LRP operations; (2) a clear and comprehensive ERAS protocol should be provided in the study design; and (3) at least three of the following parameters should be included in the study design: the average length of hospital stay, duration of flatus or defecation, and rates of complications, readmissions, or mortality. Moreover, the exclusion criteria was listed below: (1) studies published in other than English or China; (2) there was the lack of available information extracted or insufficient data for pooling results from the studies; (3) review or case report; and (4) studies based on non-human research. Two independent authors (YR Zhao and BJ Liu) screened all searched studies for final pooling analysis, whereas discrepancies were resolved by consensus.
Data extraction and quality assessment
Two independent authors reviewed all eligible studies in this systematic review and meta-analysis and extracted the following outcomes of interest: (1) name of first author, nationality, race, gender proportion, average age, publication year, and body mass index (BMI); (2) numbers of ERAS and TC group, prostate-specific antigen (PSA) in nanograms per milliliter; and (3) ERAS program-relevant characteristics, including operative time, blood loss, length of hospital stay, urinary tract infection, time to ambulate, time to defecate, time to remove urethral catheter, time to flatus, deep venous thrombosis, time to regular diet, time to remove drainage tube, nausea, intestinal obstruction, and urinary leakage.
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The methodological quality of randomized controlled trials (RCTs) was assessed by the Jadad scale, including randomization, blinding, and dropouts or withdrawals [7]. Otherwise, the Newcastle-Ottawa quality assessment scale (NOS) was used to score the quality of retrospective studies by three domains (selection, comparability, and exposure) [8].
Statistical analysis
The pooled data was calculated to evaluate the strength of the difference between the ERAS program and the TC program by standardized mean difference (SMD) for continuous variables and odds ratio (OR) for binary subjects with 95% confidence intervals (95% CIs). A P value < 0.05 was considered to be of statistical significance. Statistical heterogeneity was determined by the I2, which was defined as 100% × (Q − df)/Q, where Q is Cochran’s heterogeneity statistic, and df is the degrees of freedom. A fixed-effects model was used when the I2 value was ≤ 25%, whereas a random-effects model would be selected [9]. Only prospective studies were included for sensitivity analyses. Egger’s regression test was used to explore the potential publication bias among all eligible studies. All statistical analyses were performed in the STATA software (StataCrop, release 15.1, College Station, TX, USA).
Results
Basic characteristics of eligible studies
The flow diagram of selection of eligible studies is presented in Fig. 1. Seven trials [10‐16], including five RCTs [12‐16] and two retrospective cohort studies [10, 11], were eligible for systematic review and meta-analysis. In a total, all included studies evaluated 784 cases of prostate cancer patients, of which 379 subjects undergoing ERAS management whereas 405 undergoing conventional perioperative management. Mean age of enrolled subjects ranged from 62.8 to 70.9 years in ERAS group and 61.9 to 70.0 years in the TC group. The mean PSA value ranged from 7.2 to 44.5 ng/ml in ERAS group and 10.3 to 31.35 ng/ml in the TC group. The basic characteristics of the included studies are shown in Table 1. The ERAS program technical measures reported in all studies can be approached in Supplementary Table 1.
Fig. 1
Flow diagram of study selection in the systematic review and meta-analysis
Table 1
Basic characteristics of included studies in the systematic review
RCT randomized controlled trial, LRP laparoscopic radical prostatectomy, RALP robot-assisted laparoscopic prostatectomy, PSA prostate specific antigen, BMI body mass index
×
Using the Jadad scale, three of all five RCTs [12, 15, 16] scored three points, representing medium study quality; two [13, 14] scored four points, which suggested high quality. Both of eligible retrospective cohort studies scored six to seven points by the NOS scale, and medium study quality was identified (Table 2).
Table 2
Results of elements evaluated in each enhanced recovery after surgery (ERAS) protocol
Study
Huaxiang Yu
Nannan Dong
Jie Pan
Jian Ren
Zhichao Huang
Chunhua Lin
Ahmed Magheli
2018
2018
2018
2014
2018
2019
2011
Preoperative education
YES
YES
YES
NG
YES
YES
NG
Mechanical bowel preparation omission
YES
YES
YES
YES
YES
YES
YES
Limited preoperative fast
YES
YES
YES
NG
YES
YES
YES
Preoperative carbohydrate loading
YES
NG
YES
NG
YES
NG
NG
Preoperative nutrition
NG
NG
YES
NG
NG
NG
YES
Venous thromboembolism prophylaxis
YES
YES
YES
YES
YES
YES
YES
Epidural analgesia
YES
NG
NG
YES
NG
YES
NG
Prevention of intraoperative hypothermia
YES
NG
NG
NG
NG
YES
NG
Goal-directed fluid therapy
YES
NG
NG
NG
YES
YES
NG
Avoidance of nasogastric intubation
YES
NG
YES
NG
NG
YES
NG
Prevention of paralyticileus
YES
NG
YES
YES
YES
NG
NG
Pain control
YES
YES
YES
YES
YES
YES
YES
Early mobilization
YES
YES
YES
YES
YES
YES
YES
Early oral diet
YES
YES
YES
YES
YES
YES
NG
Non-opiate oral analgesia
YES
NG
YES
YES
YES
YES
NG
Total elements
14
7
12
8
11
12
6
NG not given
Meta-analysis results
Length of hospital stay (LOS)
Seven studies [10‐16] including 784 participants reported length of hospital stay (LOS). We observed a statistically significant shorter LOS in ERAS group compared with TC group (SMD − 2.55, 95%CI − 3.32 to − 1.78, P < 0.001; Fig. 2a).
Fig. 2
Results of meta-analysis for enhanced recovery after surgery (ERAS) in patients undergoing radical prostatectomy, including the length of hospital stay (a), time to ambulate (b), time to flatus (c), time to defecate (d), and time to remove drainage tubes (e)
×
Time to ambulate
Four studies [11, 13, 14, 16] including 639 participants addressed attention on the time to ambulate. The time to ambulate in ERAS group is statistically shorter (SMD − 6.50, 95%CI − 10.91 to − 2.09, P = 0.004; Fig. 2b).
Time to flatus
Seven studies [10‐16] including 784 participants reported time to flatus. In a random-effects model, the result indicates a statistically significant shorter time to flatus in ERAS group (SMD − 1.55, 95%CI − 2.26 to − 0.84, P < 0.001; Fig. 2c).
Time to defecate
Three studies [11, 14, 15] reported the time to defecate including 406 participants. The result indicates a statistically significant shorter time to defecate in ERAS group (SMD − 2.80, 95%CI − 4.56 to − 1.04, P = 0.002; Fig. 2d).
Time to remove drainage tubes
Four studies [11, 14‐16] reported the time to remove drainage tubes including 457 participants. The result indicates a shorter drainage tube removal time (SMD − 2.71, 95%CI − 5.31 to − 0.12, P = 0.041; Fig. 2e).
Other parameters
The other parameters including operative time, blood loss, time to remove ureteral catheter, time to regular diet in days, and rate of postoperative complications (nausea, intestinal obstruction, urinary tract infection, urinary leakage, deep venous thrombosis) were presented to have no statistical significance (Supplemental Figure 1 and 2). Moreover, no publication bias was observed by the Egger’s test in the meta-analysis of each parameter (P > 0.05).
Discussion
In the present study, we included seven eligible studies to explore the efficacy and safety of the ERAS program in patients who underwent RP surgery and reported that the ERAS program resulted in significantly shorter length of hospital stay and reduced time to flatus, defecate, ambulate, and remove drainage tubes. However, the differences of interpretative measures (including operative time and blood loss) and the occurrence of complications (including nausea, intestinal obstruction, urinary tract infection, urinary leakage, and deep venous thrombosis) remained no statistical significance.
To date, numerous articles have been performed to explore the efficacy and safety of ERAS program in laparoscopic surgery of various diseases, such as colorectal cancer, gastric cancer, bladder cancer, and hepatocellular cancer [17‐21]. Ni et al. [17] reported 13 RCTs of ERAS program in laparoscopic colorectal cancer surgery. Compared with patients in TC group, patients in ERAS group have the shorter time to leave hospital and recover gastrointestinal function and lower postoperative complication rates. Specifically, IL-6 and CRP levels of patients in ERAS group are proved to be lower. Wee et al. [18] reported 23 studies (including 14 RCTs) of ERAS program in gastric cancer surgery in 2018 and demonstrated that ERAS program in gastric cancer surgery can reduce hospital stay, costs, surgical stress response, and time to return of gut function as compared to conventional care. Xiao et al. [19] reported 16 trails (including 8 retrospective and 8 prospective trials) of ERAS program in bladder cancer surgery in 2019 and showed that ERAS protocols are associated with a faster return of bowel function, reduced incidence of POI, and shorter LOS when compared to SC in patients undergoing RC. Consistent with above studies, we observed that ERAS program showed significantly shorter time to first flatus and the length of hospital stay in patients with prostate cancer. On the other hand, the postoperative complications rate remains controversial among these studies. In this meta-analysis, the difference of postoperative complications rate between ERAS group and TC group has no statistical significance, and several studies shared the same result with us [21, 22]. The other four studies [17, 19, 20, 23] shared the result that ERAS group has a lower postoperative complications rate. Thus, more studies elevating the operative compliment rates have to be done. Particularly, two measurements, including shorter time to remove the drainage tube and first ambulate, were demonstrated to be statistically significant in our analysis, which was not explored in these three studies. Moreover, four of our included studies all reported that ERAS program can reduce the hospitalization cost. Although our study got the similar result, we considered the result had no clinical significance, considering the cost of RLP and RALP was various.
There are limitations which cannot be ignored in our study. The major limitation of this review is the number of studies we included; we only included seven studies.
Conclusion
ERAS program can significantly reduce the length of hospital stay and the time to ambulate, defecate, and flatus in patients undergoing the RALP/LRP, which could be recognized as great clinically efficacy and safety. However, our results should be interpreted with great caution due to some limitations. A large-scale, well-designed, multi-center RCT should be conducted to confirm our results.
For this type of study, formal consent is not required.
Competing interest
No competing interest exists in this manuscript.
Ethics approval and consent to participate
Not applicable.
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Consent for publication
All authors have reviewed the manuscript and agreed for the publication.
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Clinical efficacy of enhanced recovery after surgery (ERAS) program in patients undergoing radical prostatectomy: a systematic review and meta-analysis
verfasst von
Yurong Zhao Shaobo Zhang Bianjiang Liu Jie Li Hanxia Hong
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