What question did this study set out to answer?

To identify predictive factors for complete heart block during valve replacement and evaluate the risk of late conduction abnormalities.

May 1, 1985Pacing and Clinical Electrophysiology

Atrioventricular Conduction Abnormalities in Patients Undergoing Isolated Aortic or Mitral Valve Replacement

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Why the study?

Does transient complete AV block during isolated aortic or mitral valve replacement predict late recurrence of AV block?

Population

202 consecutive patients

Design

Cohort

Follow-up

over four years

Authors

DKDeborah KeefeGeneral / Preventive / Lipids JGJerry C. GriffinElectrophysiology DHDonald C. HarrisonElectrophysiology

Discussion

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Implication

Transient AV block after valve replacement was not associated with late recurrence; leaves open whether prophylactic pacing is warranted pending prospective data.

Key Points

To identify predictive factors for complete heart block during valve replacement and evaluate the risk of late conduction abnormalities.
Evaluated 102 consecutive patients undergoing isolated aortic valve replacement and 100 patients undergoing isolated mitral valve replacement.
Tracked the occurrence of perioperative conduction disturbances and followed patients over a follow-up period exceeding four years.
Transient complete heart block occurred in 17.6% of aortic valve replacement patients and 13.0% of mitral valve replacement patients.
No clinical or pathological factors were identified that reliably predicted the occurrence of complete heart block.
Incidence of late heart block remained very low over four years of follow-up, demonstrating that perioperative block does not predict late recurrence.

Structured PICO

Does transient complete AV block during isolated aortic or mitral valve replacement predict late recurrence of AV block?

Population

202 consecutive patients (102 undergoing isolated aortic valve replacement and 100 undergoing isolated mitral valve replacement)

Intervention

Isolated aortic valve replacement or isolated mitral valve replacement

Outcome

Occurrence of transient complete heart block at the time of valve replacement and identification of predictive factorshard clinical

Transient complete AV block during isolated valve replacement is common but does not predict late recurrence, suggesting prophylactic pacemaker implantation is unnecessary.

Cite This Study

Keefe et al. (1985) studied this question.

synapsesocial.com/papers/6a87f1a98c7e900eb714b306 https://doi.org/10.1111/j.1540-8159.1985.tb05777.x

Topics

Valvular heart disease

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Implication

Transient AV block after valve replacement was not associated with late recurrence; leaves open whether prophylactic pacing is warranted pending prospective data.

Atrioventricular Conduction Abnormalities in Patients Undergoing Isolated Aortic or Mitral Valve Replacement

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Atrioventricular Conduction Abnormalities in Patients Undergoing Isolated Aortic or Mitral Valve Replacement

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider