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Images

Atrioventricular block
Baseline ECG for a patient with third-degree AV block
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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Atrioventricular block
Third-degree heart block: right bundle-branch block escape
Courtesy of Dr Sanjiv Petkar; used with permission
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Atrioventricular block
Third-degree heart block: right bundle-branch block escape
Courtesy of Dr Sanjiv Petkar; used with permission
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Atrioventricular block
Third-degree AV block
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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Atrioventricular block
Type I second-degree AV block. This figure demonstrates typical features of the AV Wenckebach block, including progressively shortening R-R intervals as the P-R intervals lengthen; the figure also shows grouped beating, which is also typical for AV Wenckebach block
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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Atrioventricular block
2:1 AV block
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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Atrioventricular block
Third-degree AV block
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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Atrioventricular block
Tachy-brady syndrome due to sinus node disease. Ventricular rate is slow intermittently, but AV block is not seen
Courtesy of Dr Sanjiv Petkar; used with permission
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Atrioventricular block
First-degree AV block
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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Atrioventricular block
Type II second-degree AV block
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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Atrioventricular block
Patient with 2:1 AV block, status post permanent pacemaker placement
Courtesy of Dr Susan F. Kim, Dr John F. Beshai, and Dr Stephen L. Archer; used with permission
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