ASPARTATE AMINOTRANSFERASE

an enzyme thought to be involved in muscular dystrophy. Increased levels in the blood yield a clinical sign of this disease, as is damage...

ATROPINE

n. an anticholinergic drug derived from plants, particularly from belladonna (see also belladonna alkaloids). It is also produced synthetically. Its effects include increased heart...

AUTONOMIC DYSREFLEXIA

the exaggerated activity of the autonomic nervous system caused by a spinal-cord injury at or above the sixth thoracic vertebra. It may be...

BRADYCARDIA

n. a condition which manifests as heartbeat slower than normal. A slow heart rate usually reads at below 60 beats per minute, and symptoms...

BRADYRHYTHMIA

n. a disturbance in the heart characterized by abnormal slowness in rhythm. It is often diagnosed as being due to the following possible causes:...

CARDIAC INDEX

n. a vasodynamic measure of cardiac output, meaning the volume or fraction of blood which the left ventricle of the heart ejects into systemic...

CARDIAC MUSCLE

n. a specialized type of muscle found in the heart. It is composed of involuntary, striated muscles with branching fibers which interconnect with each...

CARDIAC NEUROSIS

n. an anxiety reaction which results from an actual heart ailment, from worry over having a heart condition, or from fear of developing a...

CARDIAC PACEMAKER

n. an artificial electrical device which is implanted in the region of the heart. Its main function is to help regulate (or normalize) an...

CARDIAC PSYCHOLOGY

n. a sub-specialty within health psychology and behavioral medicine that deals with guidance and education on the behavioral components surounding cardiac health and disease....

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