PMC5322413_01
(a) Cardiothoracic MRI depicting right ventricular hypertrophy; (b) echocardiography image demonstrating transposed ventricles; (c) electrocardiogram interpreting AV block and low heart rate.
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Magnetic Resonance Imaging was done, which showed morphological left ventricle (LV) on right side, small in caliber; morphological right ventricle (RV) on left side with myocardial hypertrophy; aorta rising from RV; and mildly dilated pulmonary artery rising from LV (Figure 1(a)). Findings of MRI were of concern for echocardiography. 2D echocardiography established the presence of congenitally corrected transposition of great arteries (CCTGA) (Figure 1(b)). Electrocardiography depicted third-degree atrioventricular block (AV block) and heart rate of 37 beats per minute (Figure 1(c)).
(a) Image showing implanted permanent pacemaker; (b) electrocardiogram after implantation of pacemaker.
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Permanent pacemaker implantation of VVI mode was done through left subclavian approach under local anesthesia (Figure 2(a)). The placement of pacemaker reverted normal heart rate and postimplantation ECG depicted AV block dissociation (Figure 2(b)).