Background
Methods
Participants
ECG analysis
Follow up
Data analysis
Results
Study population
Baseline characteristics | Patients (n = 95) |
Age | 59.1 (± 16.2) |
Male sex | 76 (80%) |
Initial rhythm | |
VF | 63 (65.6%) |
Asystole | 25 (26%) |
VT | 3 (3.1%) |
PEA | 5 (5.2%) |
Lay resuscitation | 36 (37.5%) |
Myocardial infarction | 50 (52.6%) |
Cardiomyopathy | 6 (6.3%) |
LVEF (%) | 40.3 (± 13.8) |
Died during hospitalization | 26 (27.1%) |
APACHE II | 27.6 (± 8.3) |
Time on ventilation (h) | 309.8 (± 273.2) |
Time on ICU (d) | 19.1 (± 15.0) |
CAD | 64 (67.4%) |
Previous myocardial infarction | 9 (9.5%) |
Previous ICD/Pacemaker | 4 (4.2%) |
Diastolic dysfunction | 2 (2.1%) |
Heart failure | 32 (33.7%) |
COPD | 8 (8.4%) |
Hypertension | 44 (46.3%) |
Renal failure | 24 (25.3%) |
Follow-up characteristics | Patients |
Death | 27.8% |
Newly diagnosed ventricular arrhythmia | 5.6% |
ICD shock | 3.7% |
Newly diagnosed SVT | 7.4% |
AMI | 1.9% |
ECG analysis
Measurements | TTM | After TTM | n |
p-Value |
---|---|---|---|---|
PQ (ms) | 159.0 (± 34.0) | 147.3 (± 33.2) | 40 | .059 |
QRS (ms) | 103.2 (± 23.7) | 95.3 (± 18.1) | 56 | .002 |
QT (ms) | 405.8 (± 76.4) | 373.8 (± 75.0) | 56 | .010 |
QTc (ms) | 474.9 (± 59.7) | 431.0 (± 56.8) | 56 | .000 |
QTd (ms) | 101.0 (± 46.2) | 93.0 (± 46.8) | 56 | .234 |
JT (ms) | 302.8 (± 69.4) | 278.5 (± 75.2) | 56 | .043 |
JTc (ms) | 354.3 (± 60.2) | 318.7 (± 59.1) | 56 | .002 |
TpTe (ms) | 92.4 (± 44.2) | 80.5 (± 33.3) | 54 | .051 |
TpTe-QT-Ratio | 0.23 (± 0.08) | 0.21 (± 0.07) | 54 | .240 |
TpTe d | 67.9 (± 39.9) | 56.1 (± 35.1) | 56 | .099 |
Heart rate (−min) | 86.3 (± 20.5) | 85.2 (± 25.9) | 56 | .806 |
No ventricular arrhythmia | Ventricular arrhythmia |
p-Value | |
---|---|---|---|
PQ (ms) | 163.5 (± 31.0) | 171.3 (± 29.4) | 0.437 |
QRS (ms) | 102.9 (± 24.3) | 96.9 (± 29.8) | 0.610 |
QT (ms) | 398.4 (± 75.0) | 365.8 (± 86.8) | 0.158 |
QTc (ms) | 463.8 (± 61.4) | 435.0 (± 81.9) | 0.138 |
QTd (ms) | 95.8 (± 44.9) | 104.2 (± 44.4) | 0.530 |
JT (ms) | 295.4 (± 67.8) | 268.9 (± 75.1) | 0.200 |
JTc (ms) | 343.9 (± 60.3) | 319.2 (± 69.9) | 0.183 |
TpTe (ms) | 92.9 (± 38.8) | 85.4 (± 28.5) | 0.297 |
TpTe-QT-Ratio | 0.23 (± 0.07) | 0.24 (± 0.10) | 0.643 |
TpTe d | 67.7 (± 37.0) | 68.5 (± 60.1) | 0.380 |
Heart rate (−min) | 85.5 (± 21.1) | 89.3 (± 20.7) | 0.547 |
Long-term ECG results
No incidence | Death |
p-Value | |
---|---|---|---|
PQ (ms) | 151.0 (± 32.9) | 161.6 (± 60.5) | 0.718 |
QRS (ms) | 94.1 (± 19.3) | 98.9 (± 17.6) | 0.476 |
QT (ms) | 374.0 (± 59.5) | 410.0 (± 124.5) | 0.420 |
QTc (ms) | 422.9 (± 46.7) | 464.9 (± 86.2) | 0.191 |
QTd (ms) | 91.9 (± 45.7) | 90.0 (± 53.4) | 0.697 |
JT (ms) | 279.9 (± 60.3) | 311.1 (± 124.9) | 0.484 |
JTc (ms) | 315.15 (± 48.7) | 346.9 (± 92.4) | 0.344 |
TpTe (ms) | 75.8 (± 28.6) | 103.9 (± 47.2) | 0.023 |
TpTe-QT-Ratio | 0.20 (± 0.07) | 0.25 (± 0.05) | 0.076 |
TpTe d | 59.0 (± 37.9) | 48.9 (± 17.6) | 0.667 |
Heart rate(−min) | 80.33 (± 21.0) | 88.2 (± 38.6) | 0.567 |