PMC9195056_01
a Pre - Operative EKG for patient 1: Sinus rhythm, Left axis deviation, Left bundle branch block. Qtc 428 ms (ms), Ventricular rate 74 beats per minute (BPM), QRS 140 ms. Post - Operative EKG for patient 1 notable for Atrial fibrillation with rapid ventricular response, QTc 488 ms, Ventricular rate 151 BPM, QRS 126 ms.
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Admission EKG demonstrated normal sinus rhythm (NSR) with left bundle branch block (Fig. 1a). EKG on hospital day 7 demonstrated atrial fibrillation with rapid ventricular response (Fig. 1b).
PMC9195056_02
a Pre - Operative EKG for patient 2: Atrial paced rhythm, Right bundle branch block, QTc 468, Ventricular rate 60 BPM, QRS 138 ms. Post - Operative EKG for patient 2 notable for Normal sinus rhythm, incomplete Right bundle branch block, QTc 482 ms, Ventricular rate 68 BPM, QRS 118 ms.
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EKG on admission demonstrated sinus bradycardia, right bundle branch, and t wave abnormalities (Fig. 2a). Postoperative EKG demonstrated NSR and an incomplete right bundle branch block (Fig. 2b).
PMC9195056_03
a Pre - Operative EKG for patient 3: Normal sinus rhythm, Right bundle branch block, QTc 462 ms, Ventricular rate 82 BPM, QRS 132 ms. Post- Operative EKG for patient 3 notable for Normal sinus rhythm, RSR' suggestive of right bundle branch pattern, QTc 520 ms, Ventricular rate 96 BPM, QRS 118 ms.
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EKG demonstrated NSR, right bundle branch block pattern (Fig. 3a). EKG from hospital day 6 demonstrated: NSR, with right bundle branch pattern (Fig. 3b).
PMC9195056_04
a Pre - Operative EKG for patient 4: Normal sinus rhythm, QTc 428 ms, Ventricular rate 71 BPM, QRS 102 ms. Post - Operative EKG for patient 4 notable for: Sinus rhythm with 1st degree AV block, QTc 442 ms, Ventricular rate 63 BPM, QRS 100 ms.
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Admission EKG demonstrated NSR (Fig. 4a). Post-Operative EKG showed sinus rhythm with 1st degree block (Fig. 4b).
PMC9195056_05
a Pre - Operative EKG for patient 5: Normal sinus rhythm, Left ventricular hypertrophy, QTc 505 ms, Ventricular rate 83 BPM, QRS 116 ms. Post - Operative EKG for patient 5 notable for Sinus tachycardia, QTc 510 ms, Ventricular rate 102 BPM, QRS 106 ms.
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EKG on hospital admission demonstrated NSR and left ventricular hypertrophy (Fig. 5a). Post-operative EKG showed sinus tachycardia (Fig. 5b).