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Related Experiment Videos

Right ventricular dysfunction following severe scorpion envenomation

S Nouira1, F Abroug, H Haguiga

  • 1Service de Réanimation Polyvalente, Hopital Universitaire de Monastir, Tunisia.

Chest
|September 1, 1995
PubMed
Summary
This summary is machine-generated.

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Scorpion envenomation can cause severe right ventricular dysfunction and pulmonary edema. However, cardiac function shows a trend toward recovery, suggesting scorpionic myocarditis.

Area of Science:

  • Cardiology
  • Toxicology
  • Intensive Care Medicine

Background:

  • Pulmonary edema following scorpion envenomation is a critical condition.
  • Right ventricular (RV) performance is crucial in managing such cases.

Purpose of the Study:

  • To evaluate RV performance in patients with pulmonary edema after scorpion envenomation.
  • To investigate the association between RV dysfunction and left ventricular dysfunction.

Main Methods:

  • A cohort study was conducted in a medical intensive care unit.
  • Eight adult patients with pulmonary edema following Androctonus australis envenomation were included.
  • Hemodynamic parameters and RV ejection fraction (RVEF) were measured using a pulmonary artery catheter.

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Main Results:

  • Patients presented with decreased RVEF (24%) and cardiac index, and increased pulmonary artery occlusion pressure.
  • RV contractility was altered, indicated by a decreased RV end-systolic pressure/volume ratio.
  • Survivors showed significant improvement in RVEF and cardiac index, with decreased pulmonary pressures, suggesting recovery predominantly due to afterload reduction.

Conclusions:

  • RV function impairment is linked to left ventricular dysfunction in severe scorpion envenomation.
  • Findings support the hypothesis of scorpionic myocarditis.
  • Early evaluation of RV performance is critical in managing scorpion envenomation with pulmonary edema.