| A&O, A/O | alert and oriented |
|---|---|
| A&P | anterior and posterior; assessment and plans; auscultation and percussion |
| A&R | advised and released |
| A&Sh | arm and shoulder |
| A&W | alive and well |
| A(r)K | ankle to knee |
| A(s) | asplenia syndrome |
| A+E | accident and emergency [department]; analysis and evaluation |
| A-a | alveolar-atrial |
| A-a O2 | alveolo-arterial oxygen tension |