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Surgical Case Reports
Fig. 3 | Surgical Case Reports

Fig. 3

From: Adverse impact of univentricular pacing for the patient with functional single ventricle: successful conversion to cardiac resynchronization therapy

Fig. 3

a Chest radiograph before cardiac resynchronization therapy (CRT). The cardiothoracic ratio is 65%. Atrial leads are placed on the LA and ventricular leads on the mRV. b Chest radiograph post-CRT. The cardiothoracic ratio is reduced to 50%. New ventricular leads are placed on the mLV, and the cathode of the previous mRV pacing lead is re-located to the mRV outflow tract. c Electrocardiogram before CRT. QRS duration is 156 ms. d Electrocardiogram after CRT. QRS duration is shortened to 140 ms. CRT, cardiac resynchronization therapy; LA, left atrium; mRV, morphological right ventricle; mLV, morphological left ventricle

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