Inclusion criteria for study population
| Criteria | Description |
| Surgical magnitude | Any urological surgical patient undergoing cystectomy, Mitrofanoff procedure; formation of neobladder, nephrectomy or any urological surgical procedure involving a laparotomy; any thoracic surgical patient undergoing lobectomy (VATS or open), pneumonectomy, thoracotomy, mediastinal tumour resection or any thoracic procedure involving a sternotomy. |
| Or | |
| Age | Any patient ≥80 years of age undergoing surgery with a planned length of stay ≥2 nights. |
| Or | |
| Comorbidities/functional status | Any patient with ASA grade ≥3 (or with comorbidities causing concern to the preassessment team) undergoing surgery with a planned length of stay ≥2 nights. |