| PAD | pain and distress; patient surface axis depth; percutaneous abscess drainage; percutaneous automated... |
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| RVAD | right ventricular assist device |
| A/C | albumin/coagulin [ratio]; anterior chamber of eye; assist control [ventilation] |
| ACMV | assist-controlled mechanical ventilation |
| LVAS | left ventricular assist system |
| focusing device | <microscopy> A device which effectively increases the angular aperture of the electron beam illuminating the object, rendering the focus more critical. (05 Aug 1998) |
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