Third degree AV block risk factors

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Zand, M.D.[2] Soroush Seifirad, M.D.[3] Aditya Ganti M.B.B.S. [4]

Common risk factors associated atioventricular block include older age, male sex, history of myocardial infarction, history of congestive heart disease, high systolic blood pressure, increased fasting blood glucose level.

• Common risk factors associated with atioventricular block include:^[1]

• Older age
• Male sex
• History of myocardial infarction
• History of congestive heart disease
• High systolic blood pressure
• Increased fasting blood glucose level

• Common risk factors associated with atrioventricular block after cardiac surgery include:^[2]

• Older age
• Atrial fibrillation
• Prior surgery
• Preoperative renal failure
• Active endocarditis

• Common risk factor associated with intraoperative bradycardia and hypotension in patients undergoing non-cardiac surgery include:^[3]

• Age (>60-65 years of age)
• Comorbidities
• Lower heart rates (<60 bpm) or blood pressure (<110/60 mm Hg) at baseline
• Use of concomitant drugs such as beta-blockers, renin-angiotensin system blockers

• Common risk factors associated with PPM implantation after valve surgery include:^[4]

• Preoperative RBBB
• Multivalve surgery , especially tricuspid valve
• Preoperative LBBB
• Preoperative PR interval >200 ms
• Prior valve surgery
• Age >70 years
• Reoperations
• Longer times of cross-clamp
• Absence of preoperative sinus rhythm

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