Table 1 Patient and operation characteristics
Variable | Patient/surgical characteristics number (%) | |
|---|---|---|
Gender | Male | 205 (54.2%) |
Female | 173 (45.8%) | |
ASA classification | 1 | 17 (4.5%) |
2 | 158 (41.8%) | |
3 | 153 (40.5%) | |
4 | 34 (8.99%) | |
5 | 5 (1.3%) | |
Not recorded | 11 (2.9%) | |
Documented respiratory disease | Asthma | 37 (9.8%) |
COPD | 31 (8.2%) | |
Obstructive sleep apnoea | 10 (2.6%) | |
Other | 25 (6.6%) | |
Documented cardiovascular disease | Hypertension | 145 (38.4%) |
Ischaemic heart disease | 49 (13%) | |
Atrial fibrillation | 31 (8.2%) | |
Congestive cardiac failure | 16 (4.2%) | |
Valvular disease | 18 (4.8%) | |
Other | 34 (9%) | |
National Confidential Enquiry into Patient Outcome and Death (NCEPOD) classification | Elective | 270 (71.4%) |
Urgent/immediate/expedited | 108 (28.6%) | |
Surgical specialty | Upper gastrointestinal/colorectal/general/breast | 111 (29.4%) |
Urology/renal (including renal transplantation) | 34 (9%) | |
Vascular | 37 (9.8%) | |
Orthopaedics/spinal | 29 (7.7%) | |
Hepatopancreaticobiliary/liver transplant (including liver transplantation) | 32 (8.5%) | |
Ear nose and throat/maxillofacial | 17 (4.5%) | |
Neurosurgery | 45 (11.9%) | |
Gynaecology | 23 (6.1%) | |
Cardiothoracic | 23 (6.1%) | |
Plastics | 2 (0.5%) | |
Other | 25 (6.6%) | |