1
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Piel S, McManus MJ, Heye KN, Beaulieu F, Fazelinia H, Janowska JI, MacTurk B, Starr J, Gaudio H, Patel N, Hefti MM, Smalley ME, Hook JN, Kohli NV, Bruton J, Hallowell T, Delso N, Roberts A, Lin Y, Ehinger JK, Karlsson M, Berg RA, Morgan RW, Kilbaugh TJ. Effect of dimethyl fumarate on mitochondrial metabolism in a pediatric porcine model of asphyxia-induced in-hospital cardiac arrest. Sci Rep 2024; 14:13852. [PMID: 38879681 PMCID: PMC11180202 DOI: 10.1038/s41598-024-64317-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 06/07/2024] [Indexed: 06/19/2024] Open
Abstract
Neurological and cardiac injuries are significant contributors to morbidity and mortality following pediatric in-hospital cardiac arrest (IHCA). Preservation of mitochondrial function may be critical for reducing these injuries. Dimethyl fumarate (DMF) has shown potential to enhance mitochondrial content and reduce oxidative damage. To investigate the efficacy of DMF in mitigating mitochondrial injury in a pediatric porcine model of IHCA, toddler-aged piglets were subjected to asphyxia-induced CA, followed by ventricular fibrillation, high-quality cardiopulmonary resuscitation, and random assignment to receive either DMF (30 mg/kg) or placebo for four days. Sham animals underwent similar anesthesia protocols without CA. After four days, tissues were analyzed for mitochondrial markers. In the brain, untreated CA animals exhibited a reduced expression of proteins of the oxidative phosphorylation system (CI, CIV, CV) and decreased mitochondrial respiration (p < 0.001). Despite alterations in mitochondrial content and morphology in the myocardium, as assessed per transmission electron microscopy, mitochondrial function was unchanged. DMF treatment counteracted 25% of the proteomic changes induced by CA in the brain, and preserved mitochondrial structure in the myocardium. DMF demonstrates a potential therapeutic benefit in preserving mitochondrial integrity following asphyxia-induced IHCA. Further investigation is warranted to fully elucidate DMF's protective mechanisms and optimize its therapeutic application in post-arrest care.
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Affiliation(s)
- Sarah Piel
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA.
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA.
- Department of Cardiology, Pulmonology, and Vascular Medicine, University Hospital Düsseldorf, Medical Faculty of the Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
- CARID, Cardiovascular Research Institute Düsseldorf, Medical Faculty of the Heinrich-Heine-University, Düsseldorf, Germany.
| | - Meagan J McManus
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Kristina N Heye
- Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Forrest Beaulieu
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Hossein Fazelinia
- Proteomics Core Facility, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Joanna I Janowska
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Bryce MacTurk
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Jonathan Starr
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Hunter Gaudio
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Nisha Patel
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Marco M Hefti
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Martin E Smalley
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Jordan N Hook
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Neha V Kohli
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - James Bruton
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Thomas Hallowell
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Nile Delso
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Anna Roberts
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Yuxi Lin
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Johannes K Ehinger
- Mitochondrial Medicine, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
- Otorhinolaryngology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
- Otorhinolaryngology, Head and Neck Surgery, Skåne University Hospital, Lund, Sweden
| | | | - Robert A Berg
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Ryan W Morgan
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Todd J Kilbaugh
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
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2
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Frazier AH, Topjian AA, Reeder RW, Morgan RW, Fink EL, Franzon D, Graham K, Harding ML, Mourani PM, Nadkarni VM, Wolfe HA, Ahmed T, Bell MJ, Burns C, Carcillo JA, Carpenter TC, Diddle JW, Federman M, Friess SH, Hall M, Hehir DA, Horvat CM, Huard LL, Maa T, Meert KL, Naim MY, Notterman D, Pollack MM, Schneiter C, Sharron MP, Srivastava N, Viteri S, Wessel D, Yates AR, Sutton RM, Berg RA. Association of Pediatric Postcardiac Arrest Ventilation and Oxygenation with Survival Outcomes. Ann Am Thorac Soc 2024; 21:895-906. [PMID: 38507645 PMCID: PMC11160133 DOI: 10.1513/annalsats.202311-948oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 03/18/2024] [Indexed: 03/22/2024] Open
Abstract
Rationale: Adult and pediatric studies provide conflicting data regarding whether post-cardiac arrest hypoxemia, hyperoxemia, hypercapnia, and/or hypocapnia are associated with worse outcomes. Objectives: We sought to determine whether postarrest hypoxemia or postarrest hyperoxemia is associated with lower rates of survival to hospital discharge, compared with postarrest normoxemia, and whether postarrest hypocapnia or hypercapnia is associated with lower rates of survival, compared with postarrest normocapnia. Methods: An embedded prospective observational study during a multicenter interventional cardiopulmonary resuscitation trial was conducted from 2016 to 2021. Patients ⩽18 years old and with a corrected gestational age of ≥37 weeks who received chest compressions for cardiac arrest in one of the 18 intensive care units were included. Exposures during the first 24 hours postarrest were hypoxemia, hyperoxemia, or normoxemia-defined as lowest arterial oxygen tension/pressure (PaO2) <60 mm Hg, highest PaO2 ⩾200 mm Hg, or every PaO2 60-199 mm Hg, respectively-and hypocapnia, hypercapnia, or normocapnia, defined as lowest arterial carbon dioxide tension/pressure (PaCO2) <30 mm Hg, highest PaCO2 ⩾50 mm Hg, or every PaCO2 30-49 mm Hg, respectively. Associations of oxygenation and carbon dioxide group with survival to hospital discharge were assessed using Poisson regression with robust error estimates. Results: The hypoxemia group was less likely to survive to hospital discharge, compared with the normoxemia group (adjusted relative risk [aRR] = 0.71; 95% confidence interval [CI] = 0.58-0.87), whereas survival in the hyperoxemia group did not differ from that in the normoxemia group (aRR = 1.0; 95% CI = 0.87-1.15). The hypercapnia group was less likely to survive to hospital discharge, compared with the normocapnia group (aRR = 0.74; 95% CI = 0.64-0.84), whereas survival in the hypocapnia group did not differ from that in the normocapnia group (aRR = 0.91; 95% CI = 0.74-1.12). Conclusions: Postarrest hypoxemia and hypercapnia were each associated with lower rates of survival to hospital discharge.
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Affiliation(s)
- Aisha H. Frazier
- Nemours Cardiac Center, and
- Department of Pediatrics, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Alexis A. Topjian
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ron W. Reeder
- Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Ryan W. Morgan
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ericka L. Fink
- Department of Critical Care Medicine, UPMC Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Deborah Franzon
- Department of Pediatrics, Benioff Children’s Hospital, University of California, San Francisco, San Francisco, California
| | - Kathryn Graham
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - Peter M. Mourani
- Department of Pediatrics, University of Colorado School of Medicine and Children’s Hospital Colorado, Aurora, Colorado
| | - Vinay M. Nadkarni
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Heather A. Wolfe
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Tageldin Ahmed
- Department of Pediatrics, Children’s Hospital of Michigan, Central Michigan University, Detroit, Michigan
| | - Michael J. Bell
- Department of Pediatrics, Children’s National Hospital, George Washington University School of Medicine, Washington, DC
| | - Candice Burns
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Joseph A. Carcillo
- Department of Critical Care Medicine, UPMC Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Todd C. Carpenter
- Department of Pediatrics, University of Colorado School of Medicine and Children’s Hospital Colorado, Aurora, Colorado
| | - J. Wesley Diddle
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Myke Federman
- Department of Pediatrics, Mattel Children’s Hospital, University of California Los Angeles, Los Angeles, California
| | - Stuart H. Friess
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Mark Hall
- Department of Pediatrics, Nationwide Children’s Hospital, The Ohio State University, Columbus, Ohio; and
| | - David A. Hehir
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Christopher M. Horvat
- Department of Critical Care Medicine, UPMC Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Leanna L. Huard
- Department of Pediatrics, Mattel Children’s Hospital, University of California Los Angeles, Los Angeles, California
| | - Tensing Maa
- Department of Pediatrics, Nationwide Children’s Hospital, The Ohio State University, Columbus, Ohio; and
| | - Kathleen L. Meert
- Department of Pediatrics, Children’s Hospital of Michigan, Central Michigan University, Detroit, Michigan
| | - Maryam Y. Naim
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Daniel Notterman
- Department of Molecular Biology, Princeton University, Princeton, New Jersey
| | - Murray M. Pollack
- Department of Pediatrics, Children’s National Hospital, George Washington University School of Medicine, Washington, DC
| | - Carleen Schneiter
- Department of Pediatrics, University of Colorado School of Medicine and Children’s Hospital Colorado, Aurora, Colorado
| | - Matthew P. Sharron
- Department of Pediatrics, Children’s National Hospital, George Washington University School of Medicine, Washington, DC
| | - Neeraj Srivastava
- Department of Pediatrics, Mattel Children’s Hospital, University of California Los Angeles, Los Angeles, California
| | - Shirley Viteri
- Department of Pediatrics, Nemours Children’s Health, Wilmington, Delaware
- Department of Pediatrics, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - David Wessel
- Department of Pediatrics, Children’s National Hospital, George Washington University School of Medicine, Washington, DC
| | - Andrew R. Yates
- Department of Pediatrics, Nationwide Children’s Hospital, The Ohio State University, Columbus, Ohio; and
| | - Robert M. Sutton
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Robert A. Berg
- Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
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3
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Aronowitz DI, Geoffrion TR, Piel S, Morton SR, Starr J, Melchior RW, Gaudio HA, Degani R, Widmann NJ, Weeks MK, Ranieri NR, Benson E, Ko TS, Licht DJ, Hefti M, Gaynor JW, Kilbaugh TJ, Mavroudis CD. Normoxic Management during Cardiopulmonary Bypass Does Not Reduce Cerebral Mitochondrial Dysfunction in Neonatal Swine. Int J Mol Sci 2024; 25:5466. [PMID: 38791504 PMCID: PMC11122014 DOI: 10.3390/ijms25105466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 05/05/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Optimal oxygen management during pediatric cardiopulmonary bypass (CPB) is unknown. We previously demonstrated an increase in cortical mitochondrial reactive oxygen species and decreased mitochondrial function after CPB using hyperoxic oxygen management. This study investigates whether controlled oxygenation (normoxia) during CPB reduces cortical mitochondrial dysfunction and oxidative injury. Ten neonatal swine underwent three hours of continuous CPB at 34 °C (flow > 100 mL/kg/min) via cervical cannulation targeting a partial pressure of arterial oxygen (PaO2) goal < 150 mmHg (normoxia, n = 5) or >300 mmHg (hyperoxia, n = 5). The animals underwent continuous hemodynamic monitoring and serial arterial blood sampling. Cortical microdialysate was serially sampled to quantify the glycerol concentration (represents neuronal injury) and lactate-to-pyruvate ratio (represents bioenergetic dysfunction). The cortical tissue was analyzed via high-resolution respirometry to quantify mitochondrial oxygen consumption and reactive oxygen species generation, and cortical oxidized protein carbonyl concentrations were quantified to assess for oxidative damage. Serum PaO2 was higher in hyperoxia animals throughout CPB (p < 0.001). There were no differences in cortical glycerol concentration between groups (p > 0.2). The cortical lactate-to-pyruvate ratio was modestly elevated in hyperoxia animals (p < 0.03) but the values were not clinically significant (<30). There were no differences in cortical mitochondrial respiration (p = 0.48), protein carbonyls (p = 0.74), or reactive oxygen species generation (p = 0.93) between groups. Controlled oxygenation during CPB does not significantly affect cortical mitochondrial function or oxidative injury in the acute setting. Further evaluation of the short and long-term effects of oxygen level titration during pediatric CPB on cortical tissue and other at-risk brain regions are needed, especially in the presence of cyanosis.
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Affiliation(s)
- Danielle I. Aronowitz
- Division of Cardiothoracic Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (D.I.A.)
| | - Tracy R. Geoffrion
- Division of Cardiothoracic Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (D.I.A.)
| | - Sarah Piel
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Sarah R. Morton
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Jonathan Starr
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Richard W. Melchior
- Division of Cardiothoracic Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (D.I.A.)
| | - Hunter A. Gaudio
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Rinat Degani
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Nicholas J. Widmann
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - M. Katie Weeks
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Nicolina R. Ranieri
- Department of Neurology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Emilie Benson
- Department of Neurology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Tiffany S. Ko
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Neurology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Daniel J. Licht
- Department of Neurology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Marco Hefti
- Department of Pathology, University of Iowa Health Care, Iowa City, IA 52242, USA
| | - J. William Gaynor
- Division of Cardiothoracic Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (D.I.A.)
| | - Todd J. Kilbaugh
- Resuscitation Science Center of Emphasis, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Constantine D. Mavroudis
- Division of Cardiothoracic Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (D.I.A.)
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4
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Battaglini D, Bogossian EG, Anania P, Premraj L, Cho SM, Taccone FS, Sekhon M, Robba C. Monitoring of Brain Tissue Oxygen Tension in Cardiac Arrest: a Translational Systematic Review from Experimental to Clinical Evidence. Neurocrit Care 2024; 40:349-363. [PMID: 37081276 DOI: 10.1007/s12028-023-01721-5] [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: 12/05/2022] [Accepted: 03/24/2023] [Indexed: 04/22/2023]
Abstract
BACKGROUND Cardiac arrest (CA) is a sudden event that is often characterized by hypoxic-ischemic brain injury (HIBI), leading to significant mortality and long-term disability. Brain tissue oxygenation (PbtO2) is an invasive tool for monitoring brain oxygen tension, but it is not routinely used in patients with CA because of the invasiveness and the absence of high-quality data on its effect on outcome. We conducted a systematic review of experimental and clinical evidence to understand the role of PbtO2 in monitoring brain oxygenation in HIBI after CA and the effect of targeted PbtO2 therapy on outcomes. METHODS The search was conducted using four search engines (PubMed, Scopus, Embase, and Cochrane), using the Boolean operator to combine mesh terms such as PbtO2, CA, and HIBI. RESULTS Among 1,077 records, 22 studies were included (16 experimental studies and six clinical studies). In experimental studies, PbtO2 was mainly adopted to assess the impact of gas exchanges, drugs, or systemic maneuvers on brain oxygenation. In human studies, PbtO2 was rarely used to monitor the brain oxygen tension in patients with CA and HIBI. PbtO2 values had no clear association with patients' outcomes, but in the experimental studies, brain tissue hypoxia was associated with increased inflammation and neuronal damage. CONCLUSIONS Further studies are needed to validate the effect and the threshold of PbtO2 associated with outcome in patients with CA, as well as to understand the physiological mechanisms influencing PbtO2 induced by gas exchanges, drug administration, and changes in body positioning after CA.
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Affiliation(s)
- Denise Battaglini
- Anesthesiology and Critical Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
- Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Elisa Gouvea Bogossian
- Department of Intensive Care, Hospital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Pasquale Anania
- Department of Neurosurgery, San Martino Policlinico Hospital, IRCCS for Oncology and Neuroscience, Genoa, Italy.
| | - Lavienraj Premraj
- Griffith University School of Medicine, Gold Coast, QLD, Australia
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Sung-Min Cho
- Departments of Neurology, Surgery, and Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Fabio Silvio Taccone
- Department of Intensive Care, Hospital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Mypinder Sekhon
- Division of Critical Care Medicine, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Chiara Robba
- Anesthesiology and Critical Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
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5
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Al-Eyadhy A, Almazyad M, Hasan G, AlKhudhayri N, AlSaeed AF, Habib M, Alhaboob AAN, AlAyed M, AlSehibani Y, Alsohime F, Alabdulhafid M, Temsah MH. Outcomes of Cardiopulmonary Resuscitation in the Pediatric Intensive Care of a Tertiary Center. J Pediatr Intensive Care 2023; 12:303-311. [PMID: 37970137 PMCID: PMC10631842 DOI: 10.1055/s-0041-1733855] [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: 05/04/2021] [Accepted: 07/04/2021] [Indexed: 10/20/2022] Open
Abstract
Understanding the factors affecting survival and modifying the preventable factors may improve patient outcomes following cardiopulmonary resuscitation (CPR). The aim of this study was to assess the prevalence and outcomes of cardiac arrest and CPR events in a tertiary pediatric intensive care unit (PICU). Outcomes of interest were the return of spontaneous circulation (ROSC) lasting more than 20 minutes, survival for 24 hours post-CPR, and survival to hospital discharge. We analyzed data from the PICU CPR registry from January 1, 2011 to January 1, 2018. All patients who underwent at least 2 minutes of CPR in the PICU were included. CPR was administered in 65 PICU instances, with a prevalence of 1.85%. The mean patient age was 32.7 months. ROSC occurred in 38 (58.5%) patients, 30 (46.2%) achieved 24-hour survival, and 21 (32.3%) survived to hospital discharge. Younger age ( p < 0.018), respiratory cause ( p < 0.001), bradycardia ( p < 0.018), and short duration of CPR ( p < 0.001) were associated with better outcomes, while sodium bicarbonate, norepinephrine, and vasopressin were associated with worse outcome ( p < 0.009). The off-hour CPR had no impact on the outcome. The patients' cumulative predicted survival declined by an average of 8.7% for an additional 1 minute duration of CPR ( p = 0.001). The study concludes that the duration of CPR, therefore, remains one of the crucial factors determining CPR outcomes and needs to be considered in parallel with the guideline emphasis on CPR quality. The lower survival rate post-ROSC needs careful consideration during parental counseling. Better anticipation and prevention of CPR remain ongoing challenges.
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Affiliation(s)
- Ayman Al-Eyadhy
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, Pediatric Intensive Care Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Almazyad
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, Pediatric Intensive Care Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Gamal Hasan
- Department of Pediatrics, Pediatric Intensive Care Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, Assiut Faculty of Medicine, Assiut University, Assiut, Egypt
- Department of Pediatrics, Pediatric Critical Care Unit, Sheikh Shakhbout Medical City, Abu Dhabi, United Arab Emirates
| | | | | | - Mohammed Habib
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ali A. N. Alhaboob
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, Pediatric Intensive Care Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed AlAyed
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | | | - Fahad Alsohime
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, Pediatric Intensive Care Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Majed Alabdulhafid
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, Pediatric Intensive Care Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Mohamad-Hani Temsah
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, Pediatric Intensive Care Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
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6
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Testing Physiologic Endpoint-Directed Cardiopulmonary Resuscitation: Precision Cardiopulmonary Resuscitation on the Horizon. Crit Care Med 2023; 51:151-153. [PMID: 36519992 DOI: 10.1097/ccm.0000000000005734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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7
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Wang C, Huang C, Tsai M, Wang C, Chang W, Liu S, Chen W. Inhaled Carbon Dioxide Improves Neurological Outcomes by Downregulating Hippocampal Autophagy and Apoptosis in an Asphyxia‐Induced Cardiac Arrest and Resuscitation Rat Model. J Am Heart Assoc 2022; 11:e027685. [PMID: 36314493 PMCID: PMC9673650 DOI: 10.1161/jaha.122.027685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Background Protracted cerebral hypoperfusion following cardiac arrest (CA) may cause poor neurological recovery. We hypothesized that inhaled carbon dioxide (CO2) could augment cerebral blood flow (CBF) and improve post‐CA neurological outcomes. Methods and Results After 6‐minute asphyxia‐induced CA and resuscitation, Wistar rats were randomly allocated to 4 groups (n=25/group) and administered with different inhaled CO2 concentrations, including control (0% CO2), 4% CO2, 8% CO2, and 12% CO2. Invasive monitoring was maintained for 120 minutes, and neurological outcomes were evaluated with neurological function score at 24 hours post‐CA. After the 120‐minute experiment, CBF was 242.3% (median; interquartile range, 221.1%–267.4%) of baseline in the 12% CO2 group while CBF fell to 45.8% (interquartile range, 41.2%–58.1%) of baseline in the control group (P<0.001). CBF increased along with increasing inhaled CO2 concentrations with significant linear trends (P<0.001). At 24 hours post‐CA, compared with the control group (neurological function score, 9 [interquartile range, 8–9]), neurological recovery was significantly better in the 12% CO2 group (neurological function score, 10 [interquartile range, 9.8–10]) (P<0.001) while no survival difference was observed. Brain tissue malondialdehyde (P=0.02) and serum neuron‐specific enolase (P=0.002) and S100β levels (P=0.002) were significantly lower in the 12% CO2 group. TUNEL (terminal deoxynucleotidyl transferase–mediated biotin–deoxyuridine triphosphate nick‐end labeling)‐positive cell densities in hippocampal CA1 (P<0.001) and CA3 (P<0.001) regions were also significantly reduced in the 12% CO2 group. Western blotting showed that beclin‐1 (P=0.02), p62 (P=0.02), and LAMP2 (lysosome‐associated membrane protein 2) (P=0.01) expression levels, and the LC3B‐II:LC3B‐I ratio (P=0.02) were significantly lower in the 12% CO2 group. Conclusions Administering inhaled CO2 augmented post‐CA CBF, mitigated oxidative brain injuries, ameliorated neuronal injury, and downregulated apoptosis and autophagy, thereby improving neurological outcomes.
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Affiliation(s)
- Chih‐Hung Wang
- Department of Emergency Medicine National Taiwan University Hospital Taipei Taiwan
- Department of Emergency Medicine, College of Medicine National Taiwan University Taipei Taiwan
| | - Chien‐Hua Huang
- Department of Emergency Medicine National Taiwan University Hospital Taipei Taiwan
- Department of Emergency Medicine, College of Medicine National Taiwan University Taipei Taiwan
| | - Min‐Shan Tsai
- Department of Emergency Medicine National Taiwan University Hospital Taipei Taiwan
- Department of Emergency Medicine, College of Medicine National Taiwan University Taipei Taiwan
| | - Chan‐Chi Wang
- Department of Emergency Medicine National Taiwan University Hospital Taipei Taiwan
- Department of Emergency Medicine, College of Medicine National Taiwan University Taipei Taiwan
| | - Wei‐Tien Chang
- Department of Emergency Medicine National Taiwan University Hospital Taipei Taiwan
- Department of Emergency Medicine, College of Medicine National Taiwan University Taipei Taiwan
| | - Shing‐Hwa Liu
- Institute of Toxicology, College of Medicine National Taiwan University Taipei Taiwan
- Department of Medical Research China Medical University Hospital, China Medical University Taichung Taiwan
- Department of Pediatrics National Taiwan University Hospital Taipei Taiwan
| | - Wen‐Jone Chen
- Department of Emergency Medicine National Taiwan University Hospital Taipei Taiwan
- Department of Emergency Medicine, College of Medicine National Taiwan University Taipei Taiwan
- Division of Cardiology, Department of Internal Medicine National Taiwan University Hospital and National Taiwan University College of Medicine Taipei Taiwan
- Division of Cardiology, Department of Internal Medicine Min‐Shen General Hospital Taoyuan Taiwan
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8
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Nyame S, Cheung PY, Lee TF, O’Reilly M, Schmölzer GM. A Randomized, Controlled Animal Study: 21% or 100% Oxygen during Cardiopulmonary Resuscitation in Asphyxiated Infant Piglets. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9111601. [PMID: 36360329 PMCID: PMC9688656 DOI: 10.3390/children9111601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/17/2022] [Accepted: 10/19/2022] [Indexed: 01/25/2023]
Abstract
Background: During pediatric cardiopulmonary resuscitation (CPR), resuscitation guidelines recommend 100% oxygen (O2); however, the most effective O2 concentration for infants unknown. Aim: We aimed to determine if 21% O2 during CPR with either chest compression (CC) during sustained inflation (SI) (CC + SI) or continuous chest compression with asynchronized ventilation (CCaV) will reduce time to return of spontaneous circulation (ROSC) compared to 100% O2 in infant piglets with asphyxia-induced cardiac arrest. Methods: Piglets (20−23 days of age, weighing 6.2−10.2 kg) were anesthetized, intubated, instrumented, and exposed to asphyxia. Cardiac arrest was defined as mean arterial blood pressure < 25 mmHg with bradycardia. After cardiac arrest, piglets were randomized to CC + SI or CCaV with either 21% or 100% O2 or the sham. Heart rate, arterial blood pressure, carotid blood flow, and respiratory parameters were continuously recorded. Main results: Baseline parameters, duration, and degree of asphyxiation were not different. Median (interquartile range) time to ROSC was 107 (90−440) and 140 (105−200) s with CC + SI 21% and 100% O2, and 600 (50−600) and 600 (95−600) s with CCaV 21% and 100% O2 (p = 0.27). Overall, six (86%) and six (86%) piglets with CC + SI 21% and 100% O2, and three (43%) and three (43%) piglets achieved ROSC with CCaV 21% and 100% O2 (p = 0.13). Conclusions: In infant piglets resuscitated with CC + SI, time to ROSC reduced and survival improved compared to CCaV. The use of 21% O2 had similar time to ROSC, short-term survival, and hemodynamic recovery compared to 100% oxygen. Clinical studies comparing 21% with 100% O2 during infant CPR are warranted.
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Affiliation(s)
- Solomon Nyame
- Faculty of Medicine and Dentistry, Monash University, Melbourne, VIC 3000, Australia
| | - Po-Yin Cheung
- Centre for the Studies of Asphyxia and Resuscitation, Neonatal Research Unit, Royal Alexandra Hospital, Edmonton, AB T5H 3V9, Canada
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R, Canada
| | - Tez-Fun Lee
- Centre for the Studies of Asphyxia and Resuscitation, Neonatal Research Unit, Royal Alexandra Hospital, Edmonton, AB T5H 3V9, Canada
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R, Canada
| | - Megan O’Reilly
- Centre for the Studies of Asphyxia and Resuscitation, Neonatal Research Unit, Royal Alexandra Hospital, Edmonton, AB T5H 3V9, Canada
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R, Canada
| | - Georg M. Schmölzer
- Centre for the Studies of Asphyxia and Resuscitation, Neonatal Research Unit, Royal Alexandra Hospital, Edmonton, AB T5H 3V9, Canada
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R, Canada
- Correspondence: ; Fax: +1-780-735-4072
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9
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Owyang CG, Abualsaud R, Agarwal S, Del Rios M, Grossestreuer AV, Horowitz JM, Johnson NJ, Kotini-Shah P, Mitchell OJL, Morgan RW, Moskowitz A, Perman SM, Rittenberger JC, Sawyer KN, Yuriditsky E, Abella BS, Teran F. Latest in Resuscitation Research: Highlights From the 2021 American Heart Association's Resuscitation Science Symposium. J Am Heart Assoc 2022; 11:e026191. [PMID: 36172932 DOI: 10.1161/jaha.122.026191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Clark G Owyang
- Division of Pulmonary and Critical Care Medicine Weill Cornell Medicine/New York Presbyterian Hospital New York NY.,Department of Emergency Medicine Weill Cornell Medicine/New York Presbyterian Hospital New York NY
| | - Rana Abualsaud
- Department of Emergency Medicine Weill Cornell Medicine/New York Presbyterian Hospital New York NY
| | - Sachin Agarwal
- Division of Neurocritical Care & Hospitalist Neurology Columbia University Irving Medical Center New York NY
| | - Marina Del Rios
- Department of Emergency Medicine University of Iowa Iowa City IA
| | | | - James M Horowitz
- Division of Cardiology, Department of Medicine NYU Langone Health New York NY
| | - Nicholas J Johnson
- Department of Emergency Medicine and Division of Pulmonary, Critical Care, and Sleep Medicine University of Washington Seattle WA
| | - Pavitra Kotini-Shah
- Department of Emergency Medicine University of Illinois at Chicago Chicago IL
| | - Oscar J L Mitchell
- Division of Pulmonary, Allergy, and Critical Care Medicine University of Pennsylvania Philadelphia PA
| | - Ryan W Morgan
- Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia Philadelphia PA
| | - Ari Moskowitz
- Division of Critical Care Medicine Montefiore Medical Center New York NY
| | - Sarah M Perman
- Department of Emergency Medicine University of Colorado School of Medicine Aurora CO
| | - Jon C Rittenberger
- Department of Emergency Medicine Guthrie-Robert Packer Hospital, Geisinger Commonwealth Medical College Scranton PA
| | - Kelly N Sawyer
- Department of Emergency Medicine University of Pittsburgh Pittsburgh PA
| | - Eugene Yuriditsky
- Division of Cardiology, Department of Medicine NYU Langone Health New York NY
| | - Benjamin S Abella
- Department of Emergency Medicine Center for Resuscitation Science, University of Pennsylvania Philadelphia PA
| | - Felipe Teran
- Department of Emergency Medicine Weill Cornell Medicine/New York Presbyterian Hospital New York NY
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10
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Shin SS, Sridharan A, Khaw K, Hallowell T, Morgan RW, Kilbaugh TJ, Hwang M. Intracranial Pressure and Cerebral Hemodynamic Monitoring After Cardiac Arrest in Pediatric Pigs Using Contrast Ultrasound-Derived Parameters. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2022; 41:1425-1432. [PMID: 34524698 PMCID: PMC8920953 DOI: 10.1002/jum.15825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/20/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES We explore the correlation of contrast-enhanced ultrasound (CEUS) parameters to intracranial pressure (ICP) in a porcine experimental model of pediatric cardiac arrest. METHODS Eleven pediatric pigs underwent electrically induced cardiac arrest followed by cardiopulmonary resuscitation. ICP was measured using intracranial bolt monitor and CEUS was monitored through a cranial window. Various CEUS parameters were monitored at baseline, immediately post return of spontaneous circulation (ROSC), 1 hour-post ROSC, and 3 hours post-ROSC. RESULTS There was significant ICP correlation with wash-out slope assessed by CEUS time intensity curve analysis at immediate post-ROSC. At 3 hours post-ROSC there was also significant negative correlation between ICP and peak enhancement which may be due to the evolution of anoxic injury. CONCLUSION The use of CEUS in assessing disruption of cerebral hemodynamics and ICP post cardiac arrest will need future validation and comparison to other imaging modalities. The correlation between CEUS parameters and ICP may be due to the alterations in cerebral autoregulation that result from anoxic brain injury.
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Affiliation(s)
- Samuel S Shin
- Department of Neurocritical Care, Hospital of University of Pennsylvania, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Anush Sridharan
- Department of Radiology, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kristina Khaw
- Department of Radiology, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Thomas Hallowell
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Ryan W Morgan
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Todd J Kilbaugh
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Misun Hwang
- Department of Radiology, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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11
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Moon JK, Lawrence KM, Hunt ML, Davey MG, Flake AW, Licht DJ, Chen JM, Kilbaugh TJ, Gaynor JW, Beiting DP. Chronic hypoxemia induces mitochondrial respiratory complex gene expression in the fetal sheep brain. JTCVS OPEN 2022; 10:342-349. [PMID: 36004209 PMCID: PMC9390414 DOI: 10.1016/j.xjon.2022.04.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 04/18/2022] [Accepted: 04/27/2022] [Indexed: 11/28/2022]
Abstract
Objective The molecular pathways underlying hypoxemia-induced alterations in neurodevelopment of infants with congenital heart disease have not been delineated. We used transcriptome analysis to investigate differential gene expression induced by hypoxemia in an ovine artificial-womb model. Methods Mid-gestation fetal sheep (median [interquartile range] 109 [107-112] days' gestation) were cannulated via the umbilical vessels, attached to a pumpless, low-resistance oxygenator circuit, and incubated in a sterile, fluid environment for 22 [21-23] days. Fetuses were maintained with an oxygen delivery of 20-25 mL/kg/min (normoxemia, n = 3) or 14-16 mL/kg/min (hypoxemia, n = 4). Transcriptional profiling by RNA sequencing was carried out on left frontal brains and hypoxemia-regulated genes were identified by differential gene expression analysis. Results A total of 228 genes whose expression was up or down regulated by ≥1.5-fold (false discovery rate ≤0.05) were identified. The majority of these genes were induced in hypoxemic animals compared to normoxemic controls, and functional enrichment analysis identified respiratory electron transport as a pathway strongly upregulated in the brain during chronic hypoxemia. Further examination of hypoxemia-induced genes showed robust induction of all 7 subunits of the mitochondrial NADH:ubiquinone oxidoreductase (complex I). Other hypoxemia-induced genes included cytochrome B, a component of complex III, and ATP6, ATP8, both of which are components of complex V. Conclusions Chronic fetal hypoxemia leads to upregulation of multiple mitochondrial respiratory complex genes critical for energy production and reactive oxygen species generation, including complex I. These data provide valuable insight into potential pathways involved in chronic hypoxemia-induced neuropathology and offers potential therapeutic targets for fetal neuroprotection in fetuses with congenital heart defects.
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Affiliation(s)
- James K. Moon
- Department of Surgery, The Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pa
- Department of General Surgery, Mount Sinai Hospital, New York, NY
| | - Kendall M. Lawrence
- Division of Cardiothoracic Surgery, Children's Hospital of Philadelphia, Philadelphia, Pa
| | - Mallory L. Hunt
- Department of Surgery, The Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pa
- Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pa
| | - Marcus G. Davey
- Department of Surgery, The Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pa
| | - Alan W. Flake
- Department of Surgery, The Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pa
| | - Daniel J. Licht
- Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pa
| | - Jonathan M. Chen
- Division of Cardiothoracic Surgery, Children's Hospital of Philadelphia, Philadelphia, Pa
| | - Todd J. Kilbaugh
- Division of Anesthesia and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pa
| | - J. William Gaynor
- Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pa
- Address for reprints: J. William Gaynor, MD, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevards, Philadelphia, PA 19104.
| | - Daniel P. Beiting
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pa
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12
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Kim S, Park I, Lee JH, Kim S, Jang DH, Jo YH. Vagus Nerve Stimulation Improves Mitochondrial Dysfunction in Post–cardiac Arrest Syndrome in the Asphyxial Cardiac Arrest Model in Rats. Front Neurosci 2022; 16:762007. [PMID: 35692415 PMCID: PMC9178208 DOI: 10.3389/fnins.2022.762007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Cerebral mitochondrial dysfunction during post–cardiac arrest syndrome (PCAS) remains unclear, resulting in a lack of therapeutic options that protect against cerebral ischemia–reperfusion injury. We aimed to assess mitochondrial dysfunction in the hippocampus after cardiac arrest and whether vagus nerve stimulation (VNS) can improve mitochondrial dysfunction and neurological outcomes. In an asphyxial cardiac arrest model, male Sprague–Dawley rats were assigned to the vagus nerve isolation (CA) or VNS (CA + VNS) group. Cardiopulmonary resuscitation was performed 450 s after pulseless electrical activity. After the return of spontaneous circulation (ROSC), left cervical VNS was performed for 3 h in the CA + VNS group. Mitochondrial respiratory function was evaluated using high-resolution respirometry of the hippocampal tissue. The neurologic deficit score (NDS) and overall performance category (OPC) were assessed at 24, 48, and 72 h after resuscitation. The leak respiration and oxidative phosphorylation capacity of complex I (OXPHOS CI) at 6 h after ROSC were significantly higher in the CA + VNS group than in the CA group (p = 0.0308 and 0.0401, respectively). Compared with the trends of NDS and OPC in the CA group, the trends of those in the CA + VNS group were significantly different, thus suggesting a favorable neurological outcome in the CA + VNS group (p = 0.0087 and 0.0064 between times × groups interaction, respectively). VNS ameliorated mitochondrial dysfunction after ROSC and improved neurological outcomes in an asphyxial cardiac arrest rat model.
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Affiliation(s)
- Seonghye Kim
- Department of Emergency Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea
| | - Inwon Park
- Department of Emergency Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea
- Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Jae Hyuk Lee
- Department of Emergency Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea
- Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, South Korea
- *Correspondence: Jae Hyuk Lee,
| | - Serin Kim
- Department of Emergency Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea
| | - Dong-Hyun Jang
- Department of Emergency Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea
| | - You Hwan Jo
- Department of Emergency Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea
- Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, South Korea
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13
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Mavroudis CD, Ko T, Volk LE, Smood B, Morgan RW, Lynch JM, Davarajan M, Boorady TW, Licht DJ, Gaynor JW, Mascio CE, Kilbaugh TJ. Does supply meet demand? A comparison of perfusion strategies on cerebral metabolism in a neonatal swine model. J Thorac Cardiovasc Surg 2022; 163:e47-e58. [PMID: 33485668 PMCID: PMC8862716 DOI: 10.1016/j.jtcvs.2020.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 11/29/2020] [Accepted: 12/02/2020] [Indexed: 01/03/2023]
Abstract
OBJECTIVE We aimed to determine the effects of selective antegrade cerebral perfusion compared with other perfusion strategies on indices of cerebral blood flow, oxygenation, cellular stress, and mitochondrial function. METHODS One-week-old piglets (n = 41) were assigned to 5 treatment groups. Thirty-eight were placed on cardiopulmonary bypass. Of these, 30 were cooled to 18°C and underwent deep hypothermic circulatory arrest (n = 10), underwent selective antegrade cerebral perfusion at 10 mL/kg/min (n = 10), or remained on continuous cardiopulmonary bypass (deep hypothermic cardiopulmonary bypass, n = 10) for 40 minutes. Other subjects remained on normothermic cardiopulmonary bypass (n = 8) or underwent sham surgery (n = 3). Novel, noninvasive optical measurements recorded cerebral blood flow, cerebral tissue oxyhemoglobin concentration, oxygen extraction fraction, total hemoglobin concentration, and cerebral metabolic rate of oxygen. Invasive measurements of cerebral microdialysis and cerebral blood flow were recorded. Cerebral mitochondrial respiration and reactive oxygen species generation were assessed after the piglets were killed. RESULTS During hypothermia, deep hypothermic circulatory arrest piglets experienced increases in oxygen extraction fraction (P < .001), indicating inadequate matching of oxygen supply and demand. Deep hypothermic cardiopulmonary bypass had higher cerebral blood flow (P = .046), oxyhemoglobin concentration (P = .019), and total hemoglobin concentration (P = .070) than selective antegrade cerebral perfusion, indicating greater oxygen delivery. Deep hypothermic circulatory arrest demonstrated worse mitochondrial function (P < .05), increased reactive oxygen species generation (P < .01), and increased markers of cellular stress (P < .01). Reactive oxygen species generation was increased in deep hypothermic cardiopulmonary bypass compared with selective antegrade cerebral perfusion (P < .05), but without significant microdialysis evidence of cerebral cellular stress. CONCLUSIONS Selective antegrade cerebral perfusion meets cerebral metabolic demand and mitigates cerebral mitochondrial reactive oxygen species generation. Excess oxygen delivery during deep hypothermia may have deleterious effects on cerebral mitochondria that may contribute to adverse neurologic outcomes. We describe noninvasive measurements that may help guide perfusion strategies.
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Affiliation(s)
- Constantine D. Mavroudis
- Division of Cardiothoracic Surgery, Department of Surgery, Children’s Hospital of Philadelphia, Philadelphia, Pa;,Division of Cardiovascular Surgery, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pa
| | - Tiffany Ko
- Division of Neurology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pa
| | - Lindsay E. Volk
- Division of Cardiothoracic Surgery, Department of Surgery, Children’s Hospital of Philadelphia, Philadelphia, Pa
| | - Benjamin Smood
- Division of Cardiovascular Surgery, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pa
| | - Ryan W. Morgan
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, Pa
| | - Jennifer M. Lynch
- Department of Anesthesiology, Hospital of the University of Pennsylvania, Philadelphia, Pa
| | - Mahima Davarajan
- Division of Neurology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pa
| | - Timothy W. Boorady
- Division of Neurology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pa
| | - Daniel J. Licht
- Division of Neurology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pa
| | - J. William Gaynor
- Division of Cardiothoracic Surgery, Department of Surgery, Children’s Hospital of Philadelphia, Philadelphia, Pa;,Division of Cardiovascular Surgery, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pa
| | - Christopher E. Mascio
- Division of Cardiothoracic Surgery, Department of Surgery, Children’s Hospital of Philadelphia, Philadelphia, Pa;,Division of Cardiovascular Surgery, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pa
| | - Todd J. Kilbaugh
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, Pa
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14
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Morgan RW, Sutton RM, Himebauch AS, Roberts AL, Landis WP, Lin Y, Starr J, Ranganathan A, Delso N, Mavroudis CD, Volk L, Slovis J, Marquez AM, Nadkarni VM, Hefti M, Berg RA, Kilbaugh TJ. A randomized and blinded trial of inhaled nitric oxide in a piglet model of pediatric cardiopulmonary resuscitation. Resuscitation 2021; 162:274-283. [PMID: 33766668 DOI: 10.1016/j.resuscitation.2021.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/22/2021] [Accepted: 03/09/2021] [Indexed: 01/17/2023]
Abstract
AIM Inhaled nitric oxide (iNO) during cardiopulmonary resuscitation (CPR) improved systemic hemodynamics and outcomes in a preclinical model of adult in-hospital cardiac arrest (IHCA) and may also have a neuroprotective role following cardiac arrest. The primary objectives of this study were to determine if iNO during CPR would improve cerebral hemodynamics and mitochondrial function in a pediatric model of lipopolysaccharide-induced shock-associated IHCA. METHODS After lipopolysaccharide infusion and ventricular fibrillation induction, 20 1-month-old piglets received hemodynamic-directed CPR and were randomized to blinded treatment with or without iNO (80 ppm) during and after CPR. Defibrillation attempts began at 10 min with a 20-min maximum CPR duration. Cerebral tissue from animals surviving 1-h post-arrest underwent high-resolution respirometry to evaluate the mitochondrial electron transport system and immunohistochemical analyses to assess neuropathology. RESULTS During CPR, the iNO group had higher mean aortic pressure (41.6 ± 2.0 vs. 36.0 ± 1.4 mmHg; p = 0.005); diastolic BP (32.4 ± 2.4 vs. 27.1 ± 1.7 mmHg; p = 0.03); cerebral perfusion pressure (25.0 ± 2.6 vs. 19.1 ± 1.8 mmHg; p = 0.02); and cerebral blood flow relative to baseline (rCBF: 243.2 ± 54.1 vs. 115.5 ± 37.2%; p = 0.02). Among the 8/10 survivors in each group, the iNO group had higher mitochondrial Complex I oxidative phosphorylation in the cerebral cortex (3.60 [3.56, 3.99] vs. 3.23 [2.44, 3.46] pmol O2/s mg; p = 0.01) and hippocampus (4.79 [4.35, 5.18] vs. 3.17 [2.75, 4.58] pmol O2/s mg; p = 0.02). There were no other differences in mitochondrial respiration or brain injury between groups. CONCLUSIONS Treatment with iNO during CPR resulted in superior systemic hemodynamics, rCBF, and cerebral mitochondrial Complex I respiration in this pediatric cardiac arrest model.
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Affiliation(s)
- Ryan W Morgan
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States; Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine at the University of Pennsylvania, United States.
| | - Robert M Sutton
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States; Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine at the University of Pennsylvania, United States
| | - Adam S Himebauch
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States; Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine at the University of Pennsylvania, United States
| | - Anna L Roberts
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - William P Landis
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - Yuxi Lin
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - Jonathan Starr
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - Abhay Ranganathan
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - Nile Delso
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - Constantine D Mavroudis
- Department of Surgery, Division of Cardiothoracic Surgery, Children's Hospital of Philadelphia, United States
| | - Lindsay Volk
- Department of Surgery, Division of Cardiothoracic Surgery, Children's Hospital of Philadelphia, United States
| | - Julia Slovis
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - Alexandra M Marquez
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States
| | - Vinay M Nadkarni
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States; Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine at the University of Pennsylvania, United States
| | - Marco Hefti
- Department of Pathology, University of Iowa Carver College of Medicine, United States
| | - Robert A Berg
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States; Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine at the University of Pennsylvania, United States
| | - Todd J Kilbaugh
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, United States; Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine at the University of Pennsylvania, United States
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Non-invasive diffuse optical neuromonitoring during cardiopulmonary resuscitation predicts return of spontaneous circulation. Sci Rep 2021; 11:3828. [PMID: 33589662 PMCID: PMC7884428 DOI: 10.1038/s41598-021-83270-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 01/28/2021] [Indexed: 11/08/2022] Open
Abstract
Neurologic injury is a leading cause of morbidity and mortality following pediatric cardiac arrest. In this study, we assess the feasibility of quantitative, non-invasive, frequency-domain diffuse optical spectroscopy (FD-DOS) neuromonitoring during cardiopulmonary resuscitation (CPR), and its predictive utility for return of spontaneous circulation (ROSC) in an established pediatric swine model of cardiac arrest. Cerebral tissue optical properties, oxy- and deoxy-hemoglobin concentration ([HbO2], [Hb]), oxygen saturation (StO2) and total hemoglobin concentration (THC) were measured by a FD-DOS probe placed on the forehead in 1-month-old swine (8–11 kg; n = 52) during seven minutes of asphyxiation followed by twenty minutes of CPR. ROSC prediction and time-dependent performance of prediction throughout early CPR (< 10 min), were assessed by the weighted Youden index (Jw, w = 0.1) with tenfold cross-validation. FD-DOS CPR data was successfully acquired in 48/52 animals; 37/48 achieved ROSC. Changes in scattering coefficient (785 nm), [HbO2], StO2 and THC from baseline were significantly different in ROSC versus No-ROSC subjects (p < 0.01) after 10 min of CPR. Change in [HbO2] of + 1.3 µmol/L from 1-min of CPR achieved the highest weighted Youden index (0.96) for ROSC prediction. We demonstrate feasibility of quantitative, non-invasive FD-DOS neuromonitoring, and stable, specific, early ROSC prediction from the third minute of CPR.
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Kirschen MP, Morgan RW, Majmudar T, Landis WP, Ko T, Balu R, Balasubramanian S, Topjian A, Sutton RM, Berg RA, Kilbaugh TJ. The association between early impairment in cerebral autoregulation and outcome in a pediatric swine model of cardiac arrest. Resusc Plus 2020; 4:100051. [PMID: 34223325 PMCID: PMC8244245 DOI: 10.1016/j.resplu.2020.100051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/03/2020] [Accepted: 11/08/2020] [Indexed: 12/26/2022] Open
Abstract
AIMS Evaluate cerebral autoregulation (CAR) by intracranial pressure reactivity index (PRx) and cerebral blood flow reactivity index (CBFx) during the first four hours following return of spontaneous circulation (ROSC) in a porcine model of pediatric cardiac arrest. Determine whether impaired CAR is associated with neurologic outcome. METHODS Four-week-old swine underwent seven minutes of asphyxia followed by ventricular fibrillation induction and hemodynamic-directed CPR. Those achieving ROSC had arterial blood pressure, intracranial pressure (ICP), and microvascular cerebral blood flow (CBF) monitored for 4 h. Animals were assigned an 8 -h post-ROSC swine cerebral performance category score (1 = normal; 2-4=abnormal neurologic function). In this secondary analytic study, we calculated PRx and CBFx using a continuous, moving correlation coefficient between mean arterial pressure (MAP) and ICP, and between MAP and CBF, respectively. Burden of impaired CAR was the area under the PRx or CBFx curve using a threshold of 0.3 and normalized as percentage of monitoring duration. RESULTS Among 23 animals, median PRx was 0.14 [0.06,0.25] and CBFx was 0.36 [0.05,0.44]. Median burden of impaired CAR was 21% [18,27] with PRx and 30% [17,40] with CBFx. Neurologically abnormal animals (n = 10) did not differ from normal animals (n = 13) in post-ROSC MAP (63 vs. 61 mmHg, p = 0.74), ICP (15 vs. 14 mmHg, p = 0.78) or CBF (274 vs. 397 Perfusion Units, p = 0.12). CBFx burden was greater among abnormal than normal animals (45% vs. 24%, p = 0.001), but PRx burden was not (25% vs. 20%, p = 0.38). CONCLUSION CAR is impaired early after ROSC. A greater burden of CAR impairment measured by CBFx was associated with abnormal neurologic outcome.CHOP Institutional Animal Care and Use Committee protocol 19-001327.
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Affiliation(s)
- Matthew P Kirschen
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
- Department of Pediatrics, Children’s Hospital of Philadelphia, USA
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, USA
| | - Ryan W. Morgan
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
- Department of Pediatrics, Children’s Hospital of Philadelphia, USA
| | - Tanmay Majmudar
- School of Biomedical Engineering, Science and Health Systems, Drexel University, USA
| | - William P. Landis
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
| | - Tiffany Ko
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
| | - Ramani Balu
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, USA
| | | | - Alexis Topjian
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
- Department of Pediatrics, Children’s Hospital of Philadelphia, USA
| | - Robert M. Sutton
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
- Department of Pediatrics, Children’s Hospital of Philadelphia, USA
| | - Robert A. Berg
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
- Department of Pediatrics, Children’s Hospital of Philadelphia, USA
| | - Todd J. Kilbaugh
- Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, USA
- Department of Pediatrics, Children’s Hospital of Philadelphia, USA
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Luo B, McLoone M, Rasooly IR, Craig S, Muthu N, Won J, Ruppel H, Bonafide CP. Analysis: Protocol for a New Method to Measure Physiologic Monitor Alarm Responsiveness. Biomed Instrum Technol 2020; 54:389-396. [PMID: 33339028 PMCID: PMC7769130 DOI: 10.2345/0899-8205-54.6.389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Evaluating the clinical impacts of healthcare alarm management systems plays a critical role in assessing newly implemented monitoring technology, exposing latent threats to patient safety, and identifying opportunities for system improvement. We describe a novel, accurate, rapidly implementable, and readily reproducible in situ simulation approach to measure alarm response times and rates without the challenges and expense of video analysis. An interprofessional team consisting of biomedical engineers, human factors engineers, information technology specialists, nurses, physicians, facilitators from the hospital's simulation center, clinical informaticians, and hospital administrative leadership worked with three units at a pediatric hospital to design and conduct the simulations. Existing hospital technology was used to transmit a simulated, unambiguously critical alarm that appeared to originate from an actual patient to the nurse's mobile device, and discreet observers measured responses. Simulation observational data can be used to design and evaluate quality improvement efforts to address alarm responsiveness and to benchmark performance of different alarm communication systems.
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Marquez AM, Morgan RW, Ko T, Landis WP, Hefti MM, Mavroudis CD, McManus MJ, Karlsson M, Starr J, Roberts AL, Lin Y, Nadkarni V, Licht DJ, Berg RA, Sutton RM, Kilbaugh TJ. Oxygen Exposure During Cardiopulmonary Resuscitation Is Associated With Cerebral Oxidative Injury in a Randomized, Blinded, Controlled, Preclinical Trial. J Am Heart Assoc 2020; 9:e015032. [PMID: 32321350 PMCID: PMC7428577 DOI: 10.1161/jaha.119.015032] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background Hyperoxia during cardiopulmonary resuscitation (CPR) may lead to oxidative injury from mitochondrial‐derived reactive oxygen species, despite guidelines recommending 1.0 inspired oxygen during CPR. We hypothesized exposure to 1.0 inspired oxygen during CPR would result in cerebral hyperoxia, higher mitochondrial‐derived reactive oxygen species, increased oxidative injury, and similar survival compared with those exposed to 21% oxygen. Methods and Results Four‐week‐old piglets (n=25) underwent asphyxial cardiac arrest followed by randomization and blinding to CPR with 0.21 (n=10) or 1.0 inspired oxygen (n=10) through 10 minutes post return of spontaneous circulation. Sham was n=5. Survivors received 4 hours of protocolized postarrest care, whereupon brain was obtained for mitochondrial analysis and neuropathology. Groups were compared using Kruskal‐Wallis test, Wilcoxon rank‐sum test, and generalized estimating equations regression models. Both 1.0 and 0.21 groups were similar in systemic hemodynamics and cerebral blood flow, as well as survival (8/10). The 1.0 animals had relative cerebral hyperoxia during CPR and immediately following return of spontaneous circulation (brain tissue oxygen tension, 85% [interquartile range, 72%–120%] baseline in 0.21 animals versus 697% [interquartile range, 515%–721%] baseline in 1.0 animals; P=0.001 at 10 minutes postarrest). Cerebral mitochondrial reactive oxygen species production was higher in animals treated with 1.0 compared with 0.21 (P<0.03). Exposure to 1.0 oxygen led to increased cerebral oxidative injury to proteins and lipids, as evidenced by significantly higher protein carbonyls and 4‐hydroxynoneals compared with 0.21 (P<0.05) and sham (P<0.001). Conclusions Exposure to 1.0 inspired oxygen during CPR caused cerebral hyperoxia during resuscitation, and resultant increased mitochondrial‐derived reactive oxygen species and oxidative injury following cardiac arrest.
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Affiliation(s)
- Alexandra M Marquez
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Ryan W Morgan
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Tiffany Ko
- Division of Neurology Department of Pediatrics Children's Hospital of Philadelphia PA
| | - William P Landis
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Marco M Hefti
- Department of Pathology University of Iowa Iowa City IA
| | - Constantine D Mavroudis
- Division of Cardiothoracic Surgery Department of Surgery Children's Hospital of Philadelphia PA
| | - Meagan J McManus
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | | | - Jonathan Starr
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Anna L Roberts
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Yuxi Lin
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Vinay Nadkarni
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Daniel J Licht
- Division of Neurology Department of Pediatrics Children's Hospital of Philadelphia PA
| | - Robert A Berg
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Robert M Sutton
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
| | - Todd J Kilbaugh
- Division of Critical Care Medicine Department of Anesthesiology and Critical Care Medicine Children's Hospital of Philadelphia PA
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