PMID- 28591467 OWN - NLM STAT- MEDLINE DCOM- 20180723 LR - 20220408 IS - 1525-1594 (Electronic) IS - 0160-564X (Linking) VI - 41 IP - 12 DP - 2017 Dec TI - The Effect of Impella CP on Cardiopulmonary Physiology During Venoarterial Extracorporeal Membrane Oxygenation Support. PG - 1109-1112 LID - 10.1111/aor.12923 [doi] AB - Left ventricle (LV) distension is a complication of venoarterial extracorporeal membrane oxygenation (VA-ECMO) support. The effects of Impella on the pulmonary circulatory physiology were studied in a single-center study of six consecutive patients on VA-ECMO support who had LV unloading with Impella. Right ventricular stroke volume, pulmonary hemodynamics, and partial pressure of end-tidal CO(2) (PETCO(2) ) were measured on echocardiogram, pulmonary artery catheter, and capnography, respectively. The addition of Impella CP increased total blood flow and reduced pulmonary artery wedge pressure. There was a small reduction in arterial oxygen saturation as Impella increased LV output. The increase in pulmonary artery capacitance (PCap) exceeded the reduction in pulmonary vascular resistance (PVR), thereby increasing the pulmonary artery time constant (product of PCap and PVR). The right ventricular stroke volume increased and the improvement in pulmonary hemodynamics and blood flow were associated with reduced arterial-PETCO(2) gradient. The Impella CP unloads the LV during VA-ECMO support, increasing total flow, reducing RV afterload, and facilitating RV output and pulmonary blood flow with improvement in gas exchange. CI - (c) 2017 International Center for Artificial Organs and Transplantation and Wiley Periodicals, Inc. FAU - Lim, Hoong Sern AU - Lim HS AD - University Hospital Birmingham NHS Foundation Trust-Cardiology, Edgbaston, Birmingham, United Kingdom. LA - eng PT - Journal Article DEP - 20170607 PL - United States TA - Artif Organs JT - Artificial organs JID - 7802778 SB - IM MH - Adult MH - *Extracorporeal Membrane Oxygenation/methods MH - Female MH - Heart Failure/physiopathology/therapy MH - *Heart-Assist Devices MH - *Hemodynamics MH - Humans MH - Lung/*blood supply/physiopathology MH - Male MH - Middle Aged MH - Pulmonary Artery/physiopathology MH - Vascular Resistance MH - Ventricular Function, Left OTO - NOTNLM OT - -Heart failure OT - -Ventricular assist device OT - Extracorporeal membrane oxygenation EDAT- 2017/06/08 06:00 MHDA- 2018/07/24 06:00 CRDT- 2017/06/08 06:00 PHST- 2016/11/28 00:00 [received] PHST- 2017/01/04 00:00 [revised] PHST- 2017/01/10 00:00 [accepted] PHST- 2017/06/08 06:00 [pubmed] PHST- 2018/07/24 06:00 [medline] PHST- 2017/06/08 06:00 [entrez] AID - 10.1111/aor.12923 [doi] PST - ppublish SO - Artif Organs. 2017 Dec;41(12):1109-1112. doi: 10.1111/aor.12923. Epub 2017 Jun 7.