Table 3.
Statistics of basic information of cases ( ± s, n (%)).
| Item | Data |
|---|---|
| Age (years old) | 61.21 ± 11.24 |
|
| |
| Gender | |
| Males | 1261 (53.34) |
| Females | 1103 (46.65) |
| History of smoking | 856 (36.21) |
| Diabetes | 259 (10.95) |
| Hypertension | 385 (16.28) |
| History of myocardial infarction | 1284 (54.31) |
| History of previous cardiac surgery | 18 (0.76) |
| Chronic obstructive pulmonary disease | 167 (7.06) |
| Endocarditis | 5 (0.21) |
|
| |
| Kidney function | |
| Moderate damage | 255 (10.78) |
| Serious injury | 836 (35.36) |
| Normal | 1273 (53.84) |
| Dialysis | |
|
| |
| Ejection fraction | |
| Normal (>50%) | 1892 (80.03) |
| Low (<30%) | 265 (11.21) |
| Medium (30–50%) | 207 (8.75%) |
|
| |
| Pulmonary pressure | |
| Normal (<30 mmHg) | 1835 (77.62) |
| Moderate (30–55 mmHg) | 416 (17.59) |
| Severe (>55 mmHg) | 113 (4.78) |
|
| |
| Cardiac function grade | |
| I | 346 (14.63) |
| II | 1765 (74.28) |
| III | 231 (9.77) |
| IV | 22 (0.93) |
|
| |
| Surgery method | |
| Single bypass | 1962 (82.99) |
| Bypass combined with another surgery | 335 (14.17) |
| Bypass combined with more than one other procedure | 67 (2.83) |
| Operation time (h) | 4.67 ± 1.32 |
| Extracorporeal circulation time (min) | 134.78 ± 35.81 |
| Aortic occlusion time (min) | 98.32 ± 21.93 |
| Postoperative drainage volume (mL) | 1362.72 ± 353.64 |
| Postoperative tracheal intubation time (h) | 29.83 ± 8.76 |
| Length of hospital stay (d) | 35.78 ± 12.65 |