What are the cardiac symptoms of scorpion envenomation?

Updated: Nov 09, 2018
  • Author: David Cheng, MD; Chief Editor: Joe Alcock, MD, MS  more...
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Cardiovascular signs usually follow a pattern of a hyperdynamic phase followed by a hypodynamic phase. Hypertension is described as follows:

  • Hypotension - Less common and occurs secondary to excess acetylcholine or catecholamine depletion

  • High enough to produce hypertensive encephalopathy

  • Lasts a few hours

  • Observed as early as within 4 minutes after the sting

  • Secondary to catecholamine and renin stimulation

Tachycardia is greater than 130 beats per minute, although bradycardia can be observed.

Transient apical pansystolic murmur is consistent with papillary muscle damage.

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