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Related Experiment Videos

ECG changes during septic shock.

Mark M Rich1, Mike L McGarvey, James W Teener

  • 1Department of Neurology, Emory University, Suite 6000 WMB, 1639 Pierce Drive, Atlanta, GA 30322, USA. mmrich@emory.edu

Cardiology
|July 30, 2002
PubMed
Summary
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Sepsis can decrease cardiac electrical excitability, leading to lower QRS amplitudes on electrocardiograms (ECGs). This finding suggests sepsis-induced changes in heart function may be reversible upon recovery.

Area of Science:

  • Cardiology
  • Critical Care Medicine
  • Electrophysiology

Background:

  • Skeletal muscle electrical inexcitability observed in septic patients.
  • Animal models suggest reduced sodium current underlies excitability loss in sepsis.

Observation:

  • Electrocardiograms (ECGs) of septic shock patients were analyzed for cardiac abnormalities.
  • ECG data from 17 septic shock patients and controls were compared.

Findings:

  • 14/17 septic patients showed decreased QRS amplitude during septic shock.
  • Mean QRS amplitude reduction was 41% in septic patients (p < 0.01).
  • 8/17 patients exhibited prolonged QRS duration, with some showing bundle branch block.

Implications:

Related Experiment Videos

  • Reduced QRS amplitude in septic shock may indicate altered cardiac excitability.
  • Observed ECG changes normalized in patients who recovered from septic shock.
  • Findings suggest potential for monitoring cardiac function during sepsis via ECG.