A tool to support the clinical decisions of doctors and health professionals, not for self-diagnosis or self-treatment.
This calculator is inside the patient's file in Clinicato: open it from "Medical tools" while you chart the visit, it fills in from the patient's details and vital signs where they are recorded, and adds its result to the visit's plan in one tap, with the "Medical tools" add-on. Try it in your clinic
Calculator
How it works and when to use it
The American Society of Anesthesiologists' system (last amended 2020) classes a patient from ASA I (healthy) to ASA VI (brain-dead organ donor), adding E for an emergency operation.
The tool shows each class's definition and official examples, such as smoking, pregnancy and well-controlled diabetes in ASA II, and poorly controlled diabetes and morbid obesity in ASA III.
Reference: American Society of Anesthesiologists. ASA Physical Status Classification System (last amended December 2020)
Frequently asked questions
Does the ASA class measure surgical risk?
No, it describes the patient's health only, and the risk of an operation also depends on its type, length and anaesthesia.
Who assigns the class?
Usually the anaesthetist at the pre-operative assessment, and doctors may differ on borderline cases.
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Clinic software for this specialty
Try Clinicato for your clinic
These calculators are free here for everyone, and in Clinicato 49 medical tools work inside the patient's file with the "Medical tools" add-on: filled from the visit and the vital signs, with the result added to the visit's plan, next to appointments, prescriptions and invoices.