Annals of medicine and surgery (2012) · 2021
A case of isolated sinus bradycardia as an unusual presentation of adrenal insufficiency.
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Reyes Jonathan Vincent M, Majeed Hafsa, Song David, Ahmad Saad, Bray Ashley, Almas Talal, Alshamlan Abdulaziz, Lieber Joseph J
Аннотация
INTRODUCTION: Sinus bradycardia is a common entity encountered in clinical practice. The differential diagnosis is quite broad; it can be an incidental finding in otherwise healthy adults or the first clue to a lethal pathology.
CASE PRESENTATION: This case highlights a patient who presented with symptomatic sinus bradycardia, which resulted in syncope requiring admission for permanent pacemaker implantation and later found to have an underlying adrenal insufficiency (AI). Patient's underlying hyponatremia was corrected but bradycardia persisted and after the initiation of steroids, bradycardia resolved. Therefore, the likely culprit for bradycardia was AI.
DISCUSSION: Multiple disease processes that manifest with sinus bradycardia are commonly due to the increased vagal tone or the presence of intrinsic conduction disorders. Sinus bradycardia is a common clinical finding with a broad differential including intrinsic and extrinsic causes of sinus node dysfunction or AV block.
CONCLUSION: It is imperative for clinicians to be aware of rare etiologies for underlying symptomatic bradycardia. While extremely effective at preventing symptomatic bradycardia, avoiding a pacemaker by correcting the underlying etiology of symptomatic bradycardia may improve quality of life and avoid an unnecessary procedure.
CASE PRESENTATION: This case highlights a patient who presented with symptomatic sinus bradycardia, which resulted in syncope requiring admission for permanent pacemaker implantation and later found to have an underlying adrenal insufficiency (AI). Patient's underlying hyponatremia was corrected but bradycardia persisted and after the initiation of steroids, bradycardia resolved. Therefore, the likely culprit for bradycardia was AI.
DISCUSSION: Multiple disease processes that manifest with sinus bradycardia are commonly due to the increased vagal tone or the presence of intrinsic conduction disorders. Sinus bradycardia is a common clinical finding with a broad differential including intrinsic and extrinsic causes of sinus node dysfunction or AV block.
CONCLUSION: It is imperative for clinicians to be aware of rare etiologies for underlying symptomatic bradycardia. While extremely effective at preventing symptomatic bradycardia, avoiding a pacemaker by correcting the underlying etiology of symptomatic bradycardia may improve quality of life and avoid an unnecessary procedure.