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Falk L, Lidegran M, Diaz Ruiz S, Hultman J, Broman LM. Severe Lung Dysfunction and Pulmonary Blood Flow during Extracorporeal Membrane Oxygenation. J Clin Med 2024; 13:1113. [PMID: 38398425 PMCID: PMC10889439 DOI: 10.3390/jcm13041113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/05/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Extracorporeal membrane oxygenation (ECMO) is indicated for patients with severe respiratory and/or circulatory failure. The standard technique to visualize the extent of pulmonary damage during ECMO is computed tomography (CT). PURPOSE This single-center, retrospective study investigated whether pulmonary blood flow (PBF) measured with echocardiography can assist in assessing the extent of pulmonary damage and whether echocardiography and CT findings are associated with patient outcomes. METHODS All patients (>15 years) commenced on ECMO between 2011 and 2017 with septic shock of pulmonary origin and a treatment time >28 days were screened. Of 277 eligible patients, 9 were identified where both CT and echocardiography had been consecutively performed. RESULTS CT failed to indicate any differences in viable lung parenchyma within or between survivors and non-survivors at any time during ECMO treatment. Upon initiation of ECMO, the survivors (n = 5) and non-survivors (n = 4) had similar PBF. During a full course of ECMO support, survivors showed no change in PBF (3.8 ± 2.1 at ECMO start vs. 7.9 ± 4.3 L/min, p = 0.12), whereas non-survivors significantly deteriorated in PBF from 3.5 ± 1.0 to 1.0 ± 1.1 L/min (p = 0.029). Tidal volumes were significantly lower over time among the non-survivors, p = 0.047. CONCLUSIONS In prolonged ECMO for pulmonary septic shock, CT was not found to be effective for the evaluation of pulmonary viability or recovery. This hypothesis-generating investigation supports echocardiography as a tool to predict pulmonary recovery via the assessment of PBF at the early to later stages of ECMO support.
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Affiliation(s)
- Lars Falk
- ECMO Centre Karolinska, ME Pediatric Perioperative Medicine and Intensive Care, Karolinska University Hospital, Akademiska Straket 14, 171 76 Stockholm, Sweden; (J.H.); (L.M.B.)
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 76 Stockholm, Sweden
| | - Marika Lidegran
- Department of Pediatric Radiology, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, 171 76 Stockholm, Sweden; (M.L.); (S.D.R.)
| | - Sandra Diaz Ruiz
- Department of Pediatric Radiology, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, 171 76 Stockholm, Sweden; (M.L.); (S.D.R.)
- Department of Women’s and Children’s Health, Karolinska Institutet, 171 76 Stockholm, Sweden
- Department of Radiology, Lund University, 221 00 Lund, Sweden
| | - Jan Hultman
- ECMO Centre Karolinska, ME Pediatric Perioperative Medicine and Intensive Care, Karolinska University Hospital, Akademiska Straket 14, 171 76 Stockholm, Sweden; (J.H.); (L.M.B.)
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 76 Stockholm, Sweden
| | - Lars Mikael Broman
- ECMO Centre Karolinska, ME Pediatric Perioperative Medicine and Intensive Care, Karolinska University Hospital, Akademiska Straket 14, 171 76 Stockholm, Sweden; (J.H.); (L.M.B.)
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 76 Stockholm, Sweden
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Teijeiro-Paradis R, Cherkos Dawit T, Munshi L, Ferguson ND, Fan E. Liberation From Venovenous Extracorporeal Membrane Oxygenation for Respiratory Failure: A Scoping Review. Chest 2023; 164:1184-1203. [PMID: 37353070 DOI: 10.1016/j.chest.2023.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 06/03/2023] [Accepted: 06/14/2023] [Indexed: 06/25/2023] Open
Abstract
BACKGROUND Safe and timely liberation from venovenous extracorporeal membrane oxygenation (ECMO) would be expected to reduce the duration of ECMO, the risk of complications, and costs. However, how to liberate patients from venovenous ECMO effectively remains understudied. RESEARCH QUESTION What is the current state of the evidence on liberation from venovenous ECMO? STUDY DESIGN AND METHODS We systematically searched for relevant publications on liberation from venovenous ECMO in Medline and EMBASE. Citations were included if the manuscripts provided any of the following: criteria for readiness for liberation, a liberation protocol, or a definition of successful decannulation or decannulation failure. We included randomized trials, observational trials, narrative reviews, guidelines, editorials, and commentaries. We excluded single case reports and citations where the full text was unavailable. RESULTS We screened 1,467 citations to identify 39 key publications on liberation from venovenous ECMO. We then summarized the data into five main topics: current strategies used for liberation, criteria used to define readiness for liberation, conducting liberation trials, criteria used to proceed with decannulation, and parameters used to predict decannulation outcomes. INTERPRETATION Practices on liberation from venovenous ECMO are heterogeneous and are influenced strongly by clinician preference. Additional research on liberation thresholds is needed to define optimal liberation strategies and to close existing knowledge gaps in essential topics on liberation from venovenous ECMO.
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Affiliation(s)
- Ricardo Teijeiro-Paradis
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada; Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Tsega Cherkos Dawit
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada; Mekelle University College of Health Sciences, Mekelle, Ethiopia
| | - Laveena Munshi
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada; Department of Medicine, University of Toronto, Toronto, ON, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada; Division of Respirology & Critical Care, Department of Medicine, Sinai Health System and University Health Network, Toronto, ON, Canada
| | - Niall D Ferguson
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada; Department of Medicine, University of Toronto, Toronto, ON, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada; Division of Respirology & Critical Care, Department of Medicine, Sinai Health System and University Health Network, Toronto, ON, Canada; Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Eddy Fan
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada; Institute of Medical Science, University of Toronto, Toronto, ON, Canada; Department of Medicine, University of Toronto, Toronto, ON, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada; Division of Respirology & Critical Care, Department of Medicine, Sinai Health System and University Health Network, Toronto, ON, Canada; Toronto General Hospital Research Institute, Toronto, ON, Canada.
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Complications Associated With Venovenous Extracorporeal Membrane Oxygenation-What Can Go Wrong? Crit Care Med 2022; 50:1809-1818. [PMID: 36094523 DOI: 10.1097/ccm.0000000000005673] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVES Despite increasing use and promising outcomes, venovenous extracorporeal membrane oxygenation (V-V ECMO) introduces the risk of a number of complications across the spectrum of ECMO care. This narrative review describes the variety of short- and long-term complications that can occur during treatment with ECMO and how patient selection and management decisions may influence the risk of these complications. DATA SOURCES English language articles were identified in PubMed using phrases related to V-V ECMO, acute respiratory distress syndrome, severe respiratory failure, and complications. STUDY SELECTION Original research, review articles, commentaries, and published guidelines from the Extracorporeal Life support Organization were considered. DATA EXTRACTION Data from relevant literature were identified, reviewed, and integrated into a concise narrative review. DATA SYNTHESIS Selecting patients for V-V ECMO exposes the patient to a number of complications. Adequate knowledge of these risks is needed to weigh them against the anticipated benefit of treatment. Timing of ECMO initiation and transfer to centers capable of providing ECMO affect patient outcomes. Choosing a configuration that insufficiently addresses the patient's physiologic deficit leads to consequences of inadequate physiologic support. Suboptimal mechanical ventilator management during ECMO may lead to worsening lung injury, delayed lung recovery, or ventilator-associated pneumonia. Premature decannulation from ECMO as lungs recover can lead to clinical worsening, and delayed decannulation can prolong exposure to complications unnecessarily. Short-term complications include bleeding, thrombosis, and hemolysis, renal and neurologic injury, concomitant infections, and technical and mechanical problems. Long-term complications reflect the physical, functional, and neurologic sequelae of critical illness. ECMO can introduce ethical and emotional challenges, particularly when bridging strategies fail. CONCLUSIONS V-V ECMO is associated with a number of complications. ECMO selection, timing of initiation, and management decisions impact the presence and severity of these potential harms.
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