Key result
Adenosine vasodilator stress induced left bundle branch block during myocardial perfusion imaging in a 67-year-old female patient with normal coronary angiography.
Case Report (n=1)
Adenosine stress can induce left bundle branch block during myocardial perfusion imaging even in the absence of obstructive coronary artery disease.
Adenosine may induce LBBB during MPI without CAD; leaves open questions on mechanisms and interpretive impact.
The occurrence of left bundle branch block (LBBB) in electrocardiogram during exercise testing is a relatively rare finding. The incidence of LBBB during exercise testing ranges from 0.5% to 1.1%. The mechanism of exercise-induced LBBB (EI-LBBB) is poorly understood, but ischemia is a proposed etiology. Stress myocardial perfusion imaging (MPI) can be useful in patients with EI-LBBB to rule out coronary artery disease. Adenosine vasodilator stress is the preferred mode of stress in patients with LBBB for performing stress-MPI. Here we present an interesting case of adenosine-induced LBBB during stress-MPI in a 67-year-old female patient with normal coronary angiography.
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Jayanthi et al. (2016) conducted a case report in Adenosine-induced left bundle branch block (n=1). Adenosine vasodilator stress was evaluated on Occurrence of left bundle branch block. Adenosine vasodilator stress induced left bundle branch block during myocardial perfusion imaging in a 67-year-old female patient with normal coronary angiography.
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