Table 2.
Demographics, medical comorbidities, pre-operative characteristics, and outcomes for patients (n = 315) included in the analysis of ruptured abdominal aortic aneurysm (rAAA) mortality predictive models.
| Characteristic | rAAA repairs (n = 315) | Death within 30 days PO (n = 101) |
Survival beyond 30 days PO (n = 214) |
p value* |
|---|---|---|---|---|
| Patient demographics | ||||
| Age – y | 73.6 ± 10.0 | 77 ± 9.0 | 71.8 ± 9.9 | <.001 |
| BMI – kg/m2 | 26.8 (23.4, 30.9) | 25.9 (23.4, 30.9) | 27.2 (23.4, 30.9) | .44 |
| Sex | .080 | |||
| Female | 88 (27.9) | 35 (34.7) | 53 (24.8) | |
| Male | 227 (72.1) | 66 (65.3) | 161 (75.2) | |
| Ethnicity | .38 | |||
| African American | 8 (2.5) | 2 (2.0) | 6 (2.8) | |
| American Indian | 1 (0.3) | 1 (1.0) | 0 (0.0) | |
| Asian | 3 (1.0) | 1 (1.0) | 2 (0.9) | |
| White | 250 (79.4) | 76 (75.2) | 174 (81.3) | |
| Declined | 18 (5.7) | 8 (7.9) | 10 (4.7) | |
| Not specified | 35 (11.1) | 13 (12.9) | 22 (10.3) | |
| Hispanic/Latino or not | .36 | |||
| Hispanic or Latino | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Non-Hispanic or Latino | 256 (81.3) | 79 (78.2) | 177 (82.7) | |
| Unknown | 59 (18.7) | 22 (21.8) | 37 (17.3) | |
| Medical comorbidities | ||||
| Coronary artery disease | 116 (36.8) | 38 (37.6) | 78 (36.4) | .90 |
| Cerebrovascular disease | 32 (10.2) | 14 (13.9) | 18 (8.4) | .16 |
| Renal insufficiency† | 34 (10.8) | 14 (13.9) | 20 (9.3) | .25 |
| Pre-operative characteristics | ||||
| Loss of consciousness | 63 (20.0) | 28 (27.7) | 35 (16.4) | .023 |
| GCS <15 | 79 (25.1) | 40 (39.6) | 39 (18.2) | <.001 |
| Cardiac arrest | 16 (5.1) | 10 (9.9) | 6 (2.8) | .012 |
| Shock‡ | 124 (39.4) | 55 (54.5) | 69 (32.2) | <.001 |
| SBP <90 mmHg | 76 (24.1) | 29 (28.7) | 47 (22.0) | .21 |
| SBP <70 mmHg | 33 (10.5) | 8 (7.9) | 25 (11.7) | .43 |
| Pre-operative laboratory values | ||||
| Haemoglobin – g/dL | 10.9 (9.2, 12.5) | 10.3 (8.8, 11.6) | 11.1 (9.4, 12.5) | .009 |
| Creatinine – mg/dL | 1.3 (1.0, 1.7) | 1.4 (1.1, 1.9) | 1.2 (1.0, 1.6) | .007 |
| Blood pH <7.2 | 66 (21.0) | 36 (35.6) | 30 (14.0) | <.001 |
| INR | 1.3 (1.1, 1.6) | 1.5 (1.2, 1.9) | 1.3 (1.1, 1.5) | <.001 |
| Transfer status | .90 | |||
| Transferred from OSH | 208 (66.0) | 66 (65.3) | 142 (66.4) | |
| Presented directly to HDR | 107 (34.0) | 35 (34.7) | 72 (33.6) | |
| Repair type | <.001 | |||
| Open repair | 157 (49.8) | 65 (64.4) | 92 (43.0) | |
| Endovascular repair | 158 (50.2) | 36 (35.6) | 122 (57.0) | |
| Death in hospital | 91 (28.9) | 90 (89.1) | 1 (0.5) | <.001 |
Data are presented as mean ± standard deviation, median (interquartile range), or n (%). rAAA = ruptured abdominal aortic aneurysm; PO = post-operative; BMI = body mass index; GCS = Glasgow Coma Scale; SBP = systolic blood pressure; INR = international normalised ratio; OSH = outside hospital; HDR = hospital of definitive repair.
p<.050 represents a statistically significant difference between patients who died within 30 days and patients who survived beyond 30 days post-operatively.
Serum creatinine >1.8 mg/dL, creatinine clearance <50 mL/min, or history of acute or chronic renal failure.
Systolic blood pressure <90 mmHg, heart rate ≥120 beats/minute, or cardiopulmonary arrest.