Term | Definition |
Syncope | fainting |
Hypotension | low blood pressure |
Orthostatic | standing up or upright |
Orthostatic Intolerance (OI) | the inability to tolerate the upright stance |
Arrhythmia, arrhythmic | abnormal heart rhythm, irregular, too fast (tachycardia), too slow (bradycardia) |
Ischemia, ischemic | too little blood |
Long QT syndrome | an electrical heart abnormality that can produce dangerous arrhythmias |
Cardiomyopathy | disease of the heart muscle |
Myocardial infarction | heart attack |
Cardiogenic | caused by the heart |
Neurovascular, Neurally mediated, neurocardiogenic | caused by an interaction between the nervous system and the circulatory system |
Vaso, Vascular, vasomotor | pertaining to blood vessels and their contraction |
Vagus, vagal | a cranial nerve which when stimulated causes heart slowing (among other actions) |
Autonomic nervous system | the part of the nervous system regulating many involuntary actions such as the heart rate and blood pressure |
Venous | pertaining to veins |
Right atrium | the part of the heart which receives blood returning from the body |
Pooling | the collection of blood or body fluids in dependent portions of the body |
Arterial resistance (vasoconstriction) | contraction of small arteries provides resistance against which our heart pumps blood. Different vessel resistances account for redistribution of blood throughout our body |
Peripheral resistance | usually refers to arterial resistance in more peripheral parts of the body: e.g. limbs, skin |
Vasodilation | arterial widening |
Splanchnic vascular bed | liver, spleen and digestive tract: major venous reservoir |
ARTERIAL BARORECEPTORS | pressure receptors intimately involved with the response to orthostasis |
Cardiopulmonary reflexes | reflexes from the heart and lungs which affect vascular function; these are less involved with the normal response to orthostasis |
renin-angiotensin-aldosterone, epinephrine, vasopressin | hormones involved with blood pressure regulation |
cerebrovascular autoregulation | the ability of the brain to maintain its blood flow |
Tilt Table test, head-up tilt, HUT | typically a motorized table with foot support which can take a patient from supine to upright or any angle in between. HUT is the de facto orthostatic stress test. |
Hemodynamic | pertaining to the flow of blood |
Asystole | heart stopping |
Ventricle | pumping chamber of the heart |
Contractile, contractility | pertaining to the intrinsic ability of the heart to contract |
Hypovolemia | low blood volume |
Dysautonomia, dysautonomic | malfunction of the autonomic nervous system |
Familial dysautonomia | an inherited form of autonomic failure seen only in Ashkenazi Jews |
Valsalva maneuver | a simple test of overall autonomic function |
POTS | postural orthostatic tachycardia syndrome |
Sympathetic, sympathetic nervous system | the part of the nervous system which when activated increases heart rate and blood pressure and causes vasoconstriction among other actions. |
Parasympathetic, parasympathetic nervous system | in some sense the obverse of the sympathetic system, it slows the heart rate and may have effects on blood pressure among other non-circulatory actions. The vagus nerve and the glossopharyngeal nerve are importantly involved with these actions. |
Saturday, January 7, 2012
Translating doctor-speak
Sorry the spacing of this is a bit off, the formatting was difficult to do. Hope it helps!
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