| IAC | image analysis cytometry; ineffective airway clearance; internal auditory canal; interposed abdomina... |
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| ABP | actin-binding protein; ambulatory blood pressure; American Board of Pedodontics; American Board of P... |
| AP | accessory pathway; accounts payable; acid phosphatase; acinar parenchyma; action potential; active p... |
| API | alkaline protease inhibitor; Analytical Profile Index; arterial pressure index; atmospheric pressure... |
| pa-pv | pulmonary arterial pressure-pulmonary venous pressure |
| arterial embolism | <cardiology, physiology> A sudden interruption in arterial blood flow to an organ or body part (extremity). The blockage is caused by a blot clot or atherosclerotic plaque that has moved through the arterial circulation from one position to another. The resulting mechanism is the same regardless of cause or location. Oxygen deprivation to the tissues distal to the occlusion become ischaemic and die (necrosis). Atrial fibrillation is a risk factor for arterial embolism due to the release of blood clots from the fibrillating heart. Blood vessel injury and increased levels of platelets can also be a risk for arterial embolism. Symptoms vary with location, but pain, coolness to an extremity and a absent or diminished pulse are common in the case of an extremity embolism. Treatment is often surgical or involves the use of blood clot dissolving medications (for example streptokinase) delivered selectively to the site of the blockage. (17 Oct 1997) |
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| arterial flap | A flap that includes a direct specific artery within its longitudinal axis. Synonym: arterial flap. (05 Mar 2000) |
| arterial forceps | A locking forceps with sloping blades for grasping the end of a blood vessel until a ligature is applied. (05 Mar 2000) |
| arterial grooves | Branching grooves on the interior surface of the cranial vault in which the meningeal arteries course, the most prominent of which are related to branches of the middle meningeal artery. Synonym: sulci arteriosi. (05 Mar 2000) |
| arterial hyperaemia | active hyperaemia |
| arterial hypotension | See: hypotension. (05 Mar 2000) |
| arterial ligament | The remains of the ductus arteriosus. Synonym: arterial ligament, Botallo's ligament. (05 Mar 2000) |
| arterial line | An intra-arterial catheter. (05 Mar 2000) |
| arterial murmur | A murmur heard on auscultating an artery. (05 Mar 2000) |
| arterial nephrosclerosis | Patchy atrophic scarring of the kidney due to arteriosclerotic narrowing of the lumens of large branches of the renal artery, occurring in old or hypertensive persons and occasionally causing hypertension. Synonym: arterionephrosclerosis, senile nephrosclerosis. (05 Mar 2000) |
| arterial occlusive diseases | Diseases in which arterial vessels are partially or completely obstructed or in which the blood flow through the vessels is impeded. (12 Dec 1998) |
| arterial perfusion | <procedure> Treatment in which blood is drawn from a patient, pumped through a machine that adds anticancer drugs and returned to the major artery supplying the limb being treated. (16 Dec 1997) |
| arterial plethysmography | <investigation, procedure> A test which measures the systolic blood pressure of a normal extremity compared to an upper extremity. The test is usually used to detect arterial blockage in the lower extremities. There should be less than 20 mm of Hg difference in systolic blood pressure between the upper and lower extremities. More than this can indicate arterial occlusive disease or arterial blockage. (17 Oct 1997) |
| arterial sclerosis | <cardiology, disease> Imprecise term for various disorders of arteries, particularly hardening due to fibrosis or calcium deposition, often used as a synonym for atherosclerosis. (17 Oct 1997) |
| arterial segments of kidney | Regions of the kidney supplied by end arteries branching from the renal arteries; they are named anterior inferior segmentum, anterius superior segmentum, inferior segmentum, posterior segmentum, and superior segmentum. Synonym: segmenta renalia, arterial segments of kidney. (05 Mar 2000) |