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increased heart rate in response to some stimulus conveyed through the cardiac nerves.
Etymology: L, reflectere, to bend back; Gk, tachys, fast, kardia, heart
a rapid heart sinus rhythm caused by a variety of autonomic nervous system effects, such as blood pressure changes, fever, or emotional stress.
re·flex tach·y·car·di·a(rēfleks taki-kahrdē-ă)
Increased heart rate in response to some stimulus conveyed through the cardiac nerves.
Tachycardia resulting from stimuli outside the heart, reflexly accelerating the heart rate or depressing vagal tone.
See also: tachycardia