Sandbox:Sahar

Bradycardia Differential Diagnosis

Bradycardia

Narrow complex

Wide complex

Regular

Irregular

Regular

Irregular

• Sinus bradycardia • Junctional bradycardia • Complete AV block (junctional escape) • Atrial flutter with high degree block

• Sinus arrhythmia, pause or arrest • Sinoatrial exit block (second degree) • AF with slow ventricular response • Atrial flutter with variable block • Second degree AV block, type I • Second degree AV block, type II

E03

F01

F02

G01

G02

G03

G04

H01

H02

H03

I01

I02

J01

J02

J03

J04

K01

K02

Common Causes of Sick sinus syndrome
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Images

Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia

Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia

Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia

Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia

Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia

Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia

Disease Name	Age of Onset	Gender Preponderance	Signs/Symptoms	Imaging Feature(s)	Macroscopic Feature(s)	Microscopic Feature(s)	Laboratory Findings(s)	Other Feature(s)	ECG view