The ASA physical status classification, while widely used, suffers from inter-rater variability, prompting evaluation for possible modifications.
Although the American Society of Anaesthesiologists' (ASA) classification of Physical Health is a widely used grading system for preoperative health of the surgical patients, multiple variations were observed between individual anaesthetist's assessments when describing common clinical problems. This article reviews the current knowledge and evaluation regarding ASA Classification of Physical Health as well as trials for possible modification.
Mohamed Daabiss (2011) studied this question.