|
Octogenarians (n=20) |
Septuagenarians (n=81) |
P-value | |
|---|---|---|---|
| Demographics | |||
| Age (years) | 82.0 (81.0-83.8) | 74.0 (71.5-77.0) | <0.001 |
| Female | 35.0% (7) | 45.7% (37) | 0.456 |
| Ethnicity | 0.218 | ||
| New Zealand European | 100.0% (20) | 86.4% (70) | |
| Maori or Pacific | 0.0% (0) | 6.2% (5) | |
| Other | 0.0% (0) | 7.4% (6) | |
| Body mass index (kg/m^2) | 25.1 (21.0-28.0) | 25.6 (21.7-30.0) | 0.490 |
| Body Surface Area (m^2) | 1.77 (1.55-1.91) | 1.79 (1.66-2.04) | 0.201 |
| Presentation | |||
| New York Heart Association Class | |||
| 1 | 5.0% (1) | 11.1% (9) | |
| 2 | 45.0% (9) | 25.9% (21) | |
| 3 | 25.0% (5) | 49.4% (40) | |
| 4 | 25.0% (5) | 13.6% (11) | |
| Unstable angina Class 4 | 0.0% (0) | 0.0% (0) | 1.000 |
| Syncope | 0.0% (0) | 2.5% (2) | 1.000 |
| Critical pre-operative state | 5.0% (1) | 6.2% (5) | 1.000 |
| Inpatient urgent operation | 45.0% (9) | 50.6% (41) | 0.666 |
| Past medical history | |||
| Previous cardiac surgery | 25.0% (5) | 19.8% (16) | 0.759 |
| Valve surgery | 10.0% (2) | 9.9% (8) | 1.000 |
| Coronary artery bypass grafting | 10.0% (2) | 6.2% (5) | 0.623 |
| Congestive heart failure | 45.0% (9) | 38.3% (31) | 0.616 |
| Myocardial infarction | 15.0% (3) | 12.3% (10) | 0.718 |
| Recent myocardial infarction in 90 days | 5.0% (1) | 1.2% (1) | 0.358 |
| Percutaneous coronary intervention | 5.0% (1) | 3.7% (3) | 0.576 |
| Atrial fibrillation | 60.0% (12) | 63.0% (51) | 0.802 |
| Diabetes | 0.0% (0) | 3.8% (3) | 1.000 |
| Hypertension | 40.0% (8) | 45.7% (37) | 0.803 |
| Hypercholesterolaemia | 40.0% (8) | 49.4% (40) | 0.618 |
| Current smoker | 0.0% (0) | 1.2% (1) | 1.000 |
| Smoking history | 45.0% (9) | 50.6% (41) | 0.804 |
| Active infective endocarditis | 5.0% (1) | 1.2% (1) | 0.358 |
| Cerebrovascular accident | 15.0% (3) | 1.2% (1) | 0.024 |
| Extracardiacarteriopathy | 5.0% (1) | 4.9% (4) | 1.000 |
| Chronic pulmonary disease | 15.0% (3) | 21.0% (17) | 0.756 |
| Dialysis | 0.0% (0) | 0.0% (0) | 1.000 |
| Investigations | |||
| Ejection Fraction<50% | 10.0% (2) | 22.2% (18) | 0.348 |
| Mitral regurgitation | 100.0% (20) | 95.1% (77) | 0.582 |
| Mitral stenosis | 5.0% (1) | 6.2% (5) | 1.000 |
| Aortic regurgitation | 5.0% (1) | 1.2% (1) | 0.358 |
| Aortic stenosis | 5.0% (1) | 0.0% (0) | 0.198 |
| Tricuspid regurgitation | 25.0% (5) | 22.2% (18) | 0.772 |
| Pulmonary hypertension | 0.922 | ||
| Moderate (31-55mmHg) | 55.0% (11) | 50.7% (38) | |
| Severe (>55mmHg) | 20.0% (4) | 20.0% (15) | |
| Left main artery >50% stenosis | 0.0% (0) | 1.2% (1) | 1.000 |
| Main coronary vessels >50% stenosis | 0.405 | ||
| 1 | 25.0% (5) | 12.3% (10) | |
| 2 | 5.0% (1) | 3.7% (3) | |
| 3 | 10.0% (2) | 7.4% (6) | |
| Estimated glomerular filtration rate (mL/min) | 59 (53-84) | 60 (50-76) | 0.753 |
| Risk score | |||
| EuroSCORE | 11.4 (7.5-21.4)% | 7.0 (5.1-13.1)% | 0.010 |
| EuroSCORE II | 4.5 (2.3-9.2)% | 3.4 (2.1-5.1)% | 0.165 |
| STS Score | 5.6 (3.0-9.1)% | 2.8 (1.7-4.4)% | 0.002 |