PMID- 38510614 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240322 IS - 2772-5294 (Electronic) IS - 2772-5294 (Linking) VI - 4 DP - 2024 TI - Changes in autonomic function and cerebral and somatic oxygenation with arterial flow pulsatility for children requiring veno-arterial extracorporeal membrane oxygenation. PG - 102731 LID - 10.1016/j.bas.2023.102731 [doi] LID - 102731 AB - BACKGROUND: Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) carries variability in arterial flow pulsatility (AFP). RESEARCH QUESTION: What changes in cerebral and somatic oxygenation, hemodynamics, and autonomic function are associated with AFP during VA-ECMO? METHODS: This is a prospective study of children on VA-ECMO undergoing neuromonitoring. AFP was quantified by arterial blood pressure pulse amplitude and subcategorized: no pulsatility (<1 mmHg), minimal pulsatility (1 to <5 mmHg), moderate pulsatility (5 to <15 mmHg) and high pulsatility (>/=15 mmHg). CVPR was assessed using the cerebral oximetry index (COx). Cerebral and somatic oxygenation was assessed using cerebral regional oximetry (rSO(2)) or peripheral oxygen saturation (SpO(2)). Autonomic function was assessed using baroreflex sensitivity (BRs), low-frequency high-frequency (LF/HF) ratio and standard deviation of heart rate R-R intervals (HRsd). Differences were assessed across AFP categories using linear mixed effects models with Tukey pairwise comparisons. Univariate logistic regression was used to explore risk of AFP with brain injuries. RESULTS: Among fifty-three children, comparisons of moderate to high pulsatility were associated with reductions in rSO(2) (p < 0.001), SpO 2 (p = 0.005), LF/HF ratio (p = 0.028) and an increase in HRsd (p < 0.001). Reductions in BRs were observed across comparisons of none to minimal (P < 0.001) and minimal to moderate pulsatility (p = 0.004). Comparisons of no to low pulsatility were associated with reductions in BRs (p < 0.001) and ABP (p < 0.001) with increases in SpO(2) (p < 0.001) and HR (p < 0.001). Arterial ischemic stroke was associated with higher pulsatility (p = 0.0384). CONCLUSION: During VA-ECMO support, changes toward high AFP are associated with autonomic dysregulation and compromised cerebral and somatic tissue oxygenation. CI - (c) 2023 The Authors. FAU - Appavu, Brian AU - Appavu B AD - Barrow Neurological Institute at Phoenix Children's Hospital, Department of Neurosciences, 1919 E. Thomas Road, Ambulatory Building B, 4th Floor, Phoenix, AZ, 85016, USA. FAU - Dunning, Elise AU - Dunning E AD - Creighton University Health Sciences Campus - Phoenix, 3100 N Central Avenue, Phoenix, AZ, 85012, USA. FAU - Hildebrandt, Kara AU - Hildebrandt K AD - Barrow Neurological Institute at Phoenix Children's Hospital, Department of Neurosciences, 1919 E. Thomas Road, Ambulatory Building B, 4th Floor, Phoenix, AZ, 85016, USA. FAU - Hanalioglu, Damla AU - Hanalioglu D AD - Barrow Neurological Institute at Phoenix Children's Hospital, Department of Neurosciences, 1919 E. Thomas Road, Ambulatory Building B, 4th Floor, Phoenix, AZ, 85016, USA. FAU - Abruzzo, Todd AU - Abruzzo T AD - Phoenix Children's Hospital, Department of Radiology, 1919 E. Thomas Road, Phoenix, AZ, 85016, USA. LA - eng PT - Journal Article DEP - 20231214 PL - Netherlands TA - Brain Spine JT - Brain & spine JID - 9918470888906676 PMC - PMC10951706 OTO - NOTNLM OT - Arterial flow pulsatility OT - Autonomic function OT - Cerebral regional oximetry OT - Cerebrovascular impedance OT - Cerebrovascular pressure reactivity OT - Extracorporeal membrane oxygenation COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Brian Appavu, MD reports financial support was provided by 10.13039/100000968American Heart Association. Brian Appavu, MD reports a relationship with Natus Medical Inc that includes: speaking and lecture fees. Dr. Appavu is also an editorial board member for the journal, Neurocritical Care. Dr. Appavu also reports a completed research grant from Moberg ICU Solutions as well as a research grant from the 10.13039/100000005United States Department of Defense 10.13039/100000090Congressionally Directed Medical Research Programs Epilepsy Research Program (W81XWH-19-1-0514), both outside the scope of this work. EDAT- 2024/03/21 06:43 MHDA- 2024/03/21 06:44 PMCR- 2023/12/14 CRDT- 2024/03/21 04:13 PHST- 2023/06/14 00:00 [received] PHST- 2023/12/01 00:00 [revised] PHST- 2023/12/08 00:00 [accepted] PHST- 2024/03/21 06:44 [medline] PHST- 2024/03/21 06:43 [pubmed] PHST- 2024/03/21 04:13 [entrez] PHST- 2023/12/14 00:00 [pmc-release] AID - S2772-5294(23)01019-6 [pii] AID - 102731 [pii] AID - 10.1016/j.bas.2023.102731 [doi] PST - epublish SO - Brain Spine. 2023 Dec 14;4:102731. doi: 10.1016/j.bas.2023.102731. eCollection 2024.