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Regular cannon wave

Mangalachulli Pottammal Ranjith1, Kayakkal Shajudeen2, Sankaran Prasanth2

  • 1Assistant Professor, Department of Cardiology, Kannur Medical College, Anjarakandy, Kannur, India.

Indian Heart Journal
|October 19, 2016
PubMed

Insights

This study highlights how regular cannon waves in jugular venous pulsations can indicate atrioventricular dissociation in patients with dilated cardiomyopathy, signaling potential right ventricular issues.

Area of Science:

  • Cardiology
  • Physiology

Background:

  • Dilated cardiomyopathy is a significant cardiac condition affecting heart muscle function.
  • Atrioventricular dissociation can lead to complex hemodynamic changes.

Observation:

  • A 52-year-old male with dilated cardiomyopathy presented with dizziness and dyspnea.
  • Jugular venous wave analysis revealed prominent, regular cannon waves.

Findings:

  • Cannon waves signify atrioventricular dissociation, where atrial and ventricular contractions are not synchronized.
  • Large A waves, characteristic of cannon waves, suggest reduced right ventricular compliance or elevated end-diastolic pressure.

Implications:

  • Recognizing cannon waves is crucial for diagnosing conditions causing atrioventricular dissociation.
  • This finding aids in assessing right ventricular function in cardiac patients.

Keywords:
Cannon wavesJunctional rhythm‘a’ reversal

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