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A Pacemaker that was Avoided.

Husnain Waseem1, Arsalan Talib Hashmi1, Maham Anser2

  • 1Internal Medicine, Maimonides Medical Center, New York, USA.

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|July 6, 2018
PubMed
Summary
This summary is machine-generated.

Severe hypothyroidism can cause dangerous heart rhythm problems like high-grade atrioventricular (AV) blocks. This case shows that thyroxine hormone replacement effectively treated the AV block, avoiding the need for a pacemaker.

Keywords:
heart blockhypothyroidismpace maker

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Area of Science:

  • Cardiology
  • Endocrinology

Background:

  • Thyroxine is a crucial hormone regulating metabolism and cardiovascular function.
  • Hypothyroidism, a state of low thyroid hormone levels, can lead to significant cardiovascular complications.
  • Cardiac effects of hypothyroidism include bradycardia, reduced contractility, and diminished cardiac output.

Observation:

  • A case of severe hypothyroidism presenting with a high-grade atrioventricular (AV) block is described.
  • The patient exhibited severe bradycardia and conduction abnormalities consistent with hypothyroidism.

Findings:

  • The high-grade AV block was successfully treated with thyroxine hormone replacement therapy.
  • Thyroid hormone normalization restored normal cardiac conduction, obviating the need for pacemaker implantation.

Implications:

  • This case highlights the critical role of thyroid hormones in maintaining normal cardiac electrophysiology.
  • Early diagnosis and treatment of hypothyroidism are essential to prevent severe cardiac events.
  • Thyroxine replacement is a highly effective treatment for hypothyroidism-induced AV blocks, potentially avoiding invasive procedures.