Preoperative

Estimates perioperative cardiac risk for non-cardiac surgery using six clinical predictors.

Screens for obstructive sleep apnea risk using eight yes/no questions.

Stratifies venous thromboembolism risk in surgical patients to guide prophylaxis.

Classifies patient frailty from 1 (very fit) to 9 (terminally ill) to guide perioperative decision-making.

Categorizes patient physical status from ASA I (healthy) to ASA VI (brain-dead organ donor) for anesthetic risk communication.

Summarizes recommended minimum fasting intervals before elective procedures for various intake types.

Classifies oropharyngeal view (I-IV) to predict difficulty of laryngoscopy and intubation.