PMID- 32494454 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 2156-3977 (Print) IS - 2156-3993 (Electronic) IS - 2156-3977 (Linking) VI - 8 IP - 6 DP - 2017 Jun TI - The Importance of Right Ventricular Lead Positioning in Determining Outcomes of Cardiac Resynchronization Therapy. PG - 2746-2748 LID - 10.19102/icrm.2017.080601 [doi] AB - Cardiac resynchronization therapy is known to improve clinical outcomes in patients with heart failure and left ventricular dyssynchrony. However, the optimal positioning of the right ventricular lead is unknown, and there is conflicting data on the acute hemodynamic effects and long-term outcomes. Here, we present a case of a patient who underwent implantation of a dual-chamber pacemaker for complete heart block, but who after three months, still had symptoms consistent with New York Heart Association (NYHA) Class IV heart failure. After optimal medical therapy failed and a left ventricular lead was placed, he still remained symptomatic, so the right ventricular lead was repositioned from the right ventricular outflow tract to the right ventricular apex. Afterwards, the patient's symptoms improved from NYHA Class IV to NYHA Class II, and his left ventricular ejection fraction improved from 20% to 45%. CI - Copyright: (c) 2017 Innovations in Cardiac Rhythm Management. FAU - Xu, Jack AU - Xu J AD - College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR. AD - Department of Internal Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ. FAU - Wong, Joseph AU - Wong J AD - Division of Cardiology, University of Arkansas for Medical Sciences, Little Rock, AR. FAU - Watts, Thomas E AU - Watts TE AD - Department of Internal Medicine, University of Arkansas for Medical Sciences. AD - Division of Cardiology, University of Alabama Birmingham School of Medicine, Birmingham, AL. FAU - Reddy, Sirisha AU - Reddy S AD - Division of Cardiology, University of Arkansas for Medical Sciences, Little Rock, AR. FAU - Sewani, Asif AU - Sewani A AD - Division of Cardiology, University of Arkansas for Medical Sciences, Little Rock, AR. FAU - Paydak, Hakan AU - Paydak H AD - Division of Cardiology, University of Arkansas for Medical Sciences, Little Rock, AR. LA - eng PT - Case Reports DEP - 20170615 PL - United States TA - J Innov Card Rhythm Manag JT - The Journal of innovations in cardiac rhythm management JID - 101589872 PMC - PMC7252913 OTO - NOTNLM OT - Cardiac resynchronization therapy OT - right ventricular lead positioning COIS- The authors report no conflicts of interest for the published content. EDAT- 2017/06/15 00:00 MHDA- 2017/06/15 00:01 PMCR- 2017/06/15 CRDT- 2020/06/05 06:00 PHST- 2015/03/30 00:00 [received] PHST- 2017/05/02 00:00 [accepted] PHST- 2020/06/05 06:00 [entrez] PHST- 2017/06/15 00:00 [pubmed] PHST- 2017/06/15 00:01 [medline] PHST- 2017/06/15 00:00 [pmc-release] AID - icrm.2017.080601 [pii] AID - 10.19102/icrm.2017.080601 [doi] PST - epublish SO - J Innov Card Rhythm Manag. 2017 Jun 15;8(6):2746-2748. doi: 10.19102/icrm.2017.080601. eCollection 2017 Jun.