Key result
Bileaflet mechanical heart valve exhibits early intermittent jamming likely due to dynamic pivot guard distortion.
Why the study?
Structural failure of mechanical heart valves is associated with high mortality, especially in the aortic position, but intermittent dysfunction without extrinsic obstruction is not well understood.
Case Report (n=1)
This case highlights that intermittent dysfunction of a bileaflet mechanical heart valve can occur without extrinsic obstruction, possibly due to dynamic distortion of the pivot guards.
Answers are grounded in this paper and cite their sources.
Clinicians should monitor for intermittent mechanical valve jamming even without obstruction; single-case data leaves open etiology and incidence.
Structural failure of mechanical heart valves is associated with a high mortality, especially when the valve is implanted in the aortic position. We describe a case of early intermittent dysfunction of a bileaflet mechanical heart valve implanted in a 67-year-old female. Transthoracic and transoesophageal echocardiography demonstrated intermittent jamming of the leaflets in both the open and closed positions in the absence of any obvious obstruction. The reason for the dysfunction was unclear. This intermittent dysfunction was thought to be a result of dynamic distortion of the pivot guards during the cardiac cycle.
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Russhard et al. (2010) conducted a case report in Intermittent dysfunction of a bileaflet mechanical heart valve (n=1). Bileaflet mechanical heart valve was evaluated. A bileaflet mechanical heart valve in a 67-year-old female exhibited early intermittent jamming without obvious obstruction, likely due to dynamic distortion of the pivot guards.
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