ORIGINAL ARTICLE  VASCULAR ACCESS Free access

International Angiology 2021 February;40(1):77-82

DOI: 10.23736/S0392-9590.20.04408-9

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

Distal perfusion cannulae reduce extracorporeal membrane oxygenation-related limb ischemia

Stephen C. HANLEY, Raffi MELIKIAN, William C. MACKEY, Payam SALEHI, Mark D. IAFRATI, Luis SUAREZ ✉

Division of Vascular Surgery, Tufts Medical Center, Boston, MA, USA

BACKGROUND: Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is a means of providing cardiopulmonary support that is being increasingly used in patients with acute heart failure. When ECMO cannulae are placed peripherally, their large diameters pose a risk of limb ischemia. Distal perfusion cannulae (DPC) have been proposed as means to reduce risk, but their use is not recommended by the most recent ECMO guidelines. We sought to establish their utility at our institution.
METHODS: We performed a retrospective review of of all patients treated with peripheral VA-ECMO at our institution from 2013-2018. During the first 2 years, DPC were not routinely placed, whereas in the final 4 years, DPC were recommended as part of the ECMO cannulation routine.
RESULTS: One hundred and one patients were treated with peripheral VA-ECMO, with an overall mortality of 61%. By univariate analysis, obesity (47% vs. 75%, P<0.01) and limb ischemia (57% vs. 83%, P<0.05) were associated with increased mortality. DPC were placed prophylactically in 49% of patients. Prophylactic placement of a DPC at the time of cannulation significantly reduced the incidence of limb ischemia (2% vs. 32%, P<0.05), but did not impact mortality (53% vs. 69%, P=0.0953). In patients who did not have a DPC placed during ECMO cannulation and subsequently developed limb ischemia, late DPC placement for limb salvage did not impact mortality.
CONCLUSIONS: Limb ischemia portends a poor outcome in VA-ECMO patients, and prophylactic DPC placement significantly reduces the risk of limb ischemia. We propose prophylactic DPC placement be considered in patients requiring peripheral VA-ECMO.

KEY WORDS: Extracorporeal membrane oxygenation; Surgery; Cannula