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Related Experiment Videos

AV block. Which type and where?

Kartikeya Bhargava1, Sameer Shrivastava, Balbir Singh

  • 1Escorts Heart Institute and Research Center, New Delhi, India. drkartikeya@hotmail.com <drkartikeya@hotmail.com>

Journal of Electrocardiology
|February 17, 2007
PubMed
Summary
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This case study presents an electrocardiogram (ECG) revealing sinus tachycardia with a higher sinus rate than ventricular rate, suggesting atrio-ventricular (AV) block. The findings indicate an unusual AV block pattern in a patient with a history of anterior wall infarction.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Internal Medicine

Background:

  • Atrio-ventricular (AV) block is a condition affecting cardiac electrical conduction.
  • Anterior wall myocardial infarction can predispose patients to conduction abnormalities.
  • Sinus tachycardia is a common finding in various clinical scenarios.

Observation:

  • An electrocardiogram (ECG) demonstrated sinus tachycardia where the sinus rate exceeded the ventricular rate.
  • Variable PR intervals and irregular RR intervals were noted.
  • The P-wave to QRS complex relationship was inconsistent with typical second-degree type 1 AV block.

Findings:

  • The ECG findings suggest a complex or unusual form of atrio-ventricular (AV) block.
  • The specific site and degree of AV block require further elucidation.

Related Experiment Videos

  • The pattern observed deviates from classic Mobitz Type I (Wenckebach) block.

    • Implications:

    • This case highlights the importance of careful ECG interpretation in patients with cardiac history.
    • Understanding atypical AV block patterns is crucial for accurate diagnosis and management.
    • Further investigation may be warranted to determine the precise mechanism and clinical significance.