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. 2015 Jul 13;15(2):90-5.
doi: 10.1016/j.ipej.2015.07.001. eCollection 2015 Mar-Apr.

Paced QRS duration predicts left ventricular function in patients with permanent pacemakers - One-year follow-up study using equilibrium radionuclide angiography (ERNA)

Gautam Sharma  1 , Sudhir Suryakant Shetkar  1 , Chetan D Patel  1 , Harmandeep Singh  1 , Nitish Naik  1 , Ambuj Roy  1 , Rajnish Juneja  1 , Prashanthan Sanders  2
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Paced QRS duration predicts left ventricular function in patients with permanent pacemakers - One-year follow-up study using equilibrium radionuclide angiography (ERNA)

Gautam Sharma et al. Indian Pacing Electrophysiol J. .

Abstract

Permanent pacing, being non physiological, often results in ventricular dysfunction over time. Narrower paced QRS duration from pacing the right ventricular outflow tract septum, might result in relatively preserved ventricular function over long term follow up.

Keywords: Equilibrium radionuclide angiography (ERNA); Paced QRS duration; Right ventricular outflow tract pacing.

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Figures

Fig. 1
Fig. 1
A. Electrocardiogram of a patient in group 1 with RVOT pacing having narrow paced QRS duration (pQRSd) of <130 ms. B. Electrocardiogram of patient in group 2 with RV apical pacing having pQRSd of >130 ms.
Fig. 2
Fig. 2
There is significant fall in left ventricle ejection fraction (LVEF) in group 2 with paced QRD duration (pQRSd) >130 ms (54.7 ± 5.6 to 52.9 ± 6.3, p = 0.031). Whereas there is insignificant fall in LVEF in group 1 with pQRSd ≤130 ms (56.6 ± 5.5 to 54.9 ± 7.5, p = 0.151).
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