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Cáceres E, Divani AA, Rubinos CA, Olivella-Gómez J, Viñan Garcés AE, González A, Alvarado Arias A, Bhatia K, Samadani U, Reyes LF. PaCO 2 Association with Outcomes of Patients with Traumatic Brain Injury at High Altitude: A Prospective Single-Center Cohort Study. Neurocrit Care 2024:10.1007/s12028-024-01982-8. [PMID: 38740704 DOI: 10.1007/s12028-024-01982-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 03/12/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND Partial pressure of carbon dioxide (PaCO2) is generally known to influence outcome in patients with traumatic brain injury (TBI) at normal altitudes. Less is known about specific relationships of PaCO2 levels and clinical outcomes at high altitudes. METHODS This is a prospective single-center cohort of consecutive patients with TBI admitted to a trauma center located at 2600 m above sea level. An unfavorable outcome was defined as a Glasgow Outcome Scale-Extended (GOSE) score < 4 at the 6-month follow-up. RESULTS We had a total of 81 patients with complete data, 80% (65/81) were men, and the median (interquartile range) age was 36 (25-50) years. Median Glasgow Coma Scale (GCS) score on admission was 9 (6-14); 49% (40/81) of patients had severe TBI (GCS 3-8), 32% (26/81) had moderate TBI (GCS 12-9), and 18% (15/81) had mild TBI (GCS 13-15). The median (interquartile range) Abbreviated Injury Score of the head (AISh) was 3 (2-4). The frequency of an unfavorable outcome (GOSE < 4) was 30% (25/81), the median GOSE was 4 (2-5), and the median 6-month mortality rate was 24% (20/81). Comparison between patients with favorable and unfavorable outcomes revealed that those with unfavorable outcome were older, (median age 49 [30-72] vs. 29 [22-41] years, P < 0.01), had lower admission GCS scores (6 [4-8] vs. 13 [8-15], P < 0.01), had higher AISh scores (4 [4-4] vs. 3 [2-4], P < 0.01), had higher Acute Physiology and Chronic Health disease Classification System II scores (17 [15-23] vs. 10 [6-14], P < 0.01), had higher Charlson scores (0 [0-2] vs. 0 [0-0], P < 0.01), and had higher PaCO2 levels (mean 35 ± 8 vs. 32 ± 6 mm Hg, P < 0.01). In a multivariate analysis, age (odds ratio [OR] 1.14, 95% confidence interval [CI] 1.1-1.30, P < 0.01), AISh (OR 4.7, 95% CI 1.55-21.0, P < 0.05), and PaCO2 levels (OR 1.23, 95% CI 1.10-1.53, P < 0.05) were significantly associated with the unfavorable outcomes. When applying the same analysis to the subgroup on mechanical ventilation, AISh (OR 5.4, 95% CI 1.61-28.5, P = 0.017) and PaCO2 levels (OR 1.36, 95% CI 1.13-1.78, P = 0.015) remained significantly associated with the unfavorable outcome. CONCLUSIONS Higher PaCO2 levels are associated with an unfavorable outcome in ventilated patients with TBI. These results underscore the importance of PaCO2 levels in patients with TBI and whether it should be adjusted for populations living at higher altitudes.
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Affiliation(s)
- Eder Cáceres
- Unisabana Center for Translational Science, School of Medicine, Universidad de La Sabana, Chía, Colombia.
- Department of Bioscience, School of Engineering, Universidad de La Sabana, Chía, Colombia.
- Department of Critical Care, Clínica Universidad de La Sabana, Chía, Colombia.
| | - Afshin A Divani
- Department of Neurology, The University of New Mexico, Albuquerque, NM, USA
| | - Clio A Rubinos
- Department of Neurology, University of North Carolina, Chapel Hill, NC, USA
| | - Juan Olivella-Gómez
- Department of Critical Care, Clínica Universidad de La Sabana, Chía, Colombia
| | | | - Angélica González
- Department of Critical Care, Clínica Universidad de La Sabana, Chía, Colombia
| | | | - Kunal Bhatia
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Uzma Samadani
- Department of Neurosurgery, Minneapolis VA Health Care System, Minneapolis, MN, USA
| | - Luis F Reyes
- Unisabana Center for Translational Science, School of Medicine, Universidad de La Sabana, Chía, Colombia
- Department of Critical Care, Clínica Universidad de La Sabana, Chía, Colombia
- Pandemic Sciences Institute, University of Oxford, Oxford, UK
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Kottmann A, Pasquier M, Carron PN, Maudet L, Rouvé JD, Suppan L, Caillet-Bois D, Riva T, Albrecht R, Krüger A, Sollid SJM. Feasibility of quality indicators on prehospital advanced airway management in a physician-staffed emergency medical service: survey-based assessment of the provider point of view. BMJ Open 2024; 14:e081951. [PMID: 38453207 PMCID: PMC10921492 DOI: 10.1136/bmjopen-2023-081951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/20/2024] [Indexed: 03/09/2024] Open
Abstract
OBJECTIVE We aimed to determine the feasibility of quality indicators (QIs) for prehospital advanced airway management (PAAM) from a provider point of view. DESIGN The study is a survey based feasibility assessment following field testing of QIs for PAAM. SETTING The study was performed in two physician staffed emergency medical services in Switzerland. PARTICIPANTS 42 of the 44 emergency physicians who completed at least one case report form (CRF) dedicated to the collection of the QIs on PAAM between 1 January 2019 and 31 December 2021 participated in the study. INTERVENTION The data required to calculate the 17 QIs was systematically collected through a dedicated electronic CRF. PRIMARY AND SECONDARY OUTCOME MEASURES Primary outcomes were provider-related feasibility criteria: relevance and acceptance of the QIs, as well as reliability of the data collection. Secondary outcomes were effort to collect specific data and to complete the CRF. RESULTS Over the study period, 470 CRFs were completed, with a median of 11 per physician (IQR 4-17; range 1-48). The median time to complete the CRF was 7 min (IQR 3-16) and was considered reasonable by 95% of the physicians. Overall, 75% of the physicians assessed the set of QIs to be relevant, and 74% accepted that the set of QIs assessed the quality of PAAM. The reliability of data collection was rated as good or excellent for each of the 17 QIs, with the lowest rated for the following 3 QIs: duration of preoxygenation, duration of laryngoscopy and occurrence of desaturation during laryngoscopy. CONCLUSIONS Collection of QIs on PAAM appears feasible. Electronic medical records and technological solutions facilitating automatic collection of vital parameters and timing during the procedure could improve the reliability of data collection for some QIs. Studies in other services are needed to determine the external validity of our results.
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Affiliation(s)
- Alexandre Kottmann
- Emergency Department, Department of Interdisciplinary Centres, Lausanne University Hospital, Lausanne, Vaud, Switzerland
- Medicine, REGA, Zurich, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital Bern, Bern, Switzerland
- Department of Research and Development, Norwegian Air Ambulance Foundation, Drøbak, Norway
- Faculty of Health Sciences, University of Stavanger, Stavanger, Norway
| | - Mathieu Pasquier
- Emergency Department, Department of Interdisciplinary Centres, Lausanne University Hospital, Lausanne, Vaud, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | - Pierre-Nicolas Carron
- Emergency Department, Department of Interdisciplinary Centres, Lausanne University Hospital, Lausanne, Vaud, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | - Ludovic Maudet
- Emergency Department, Department of Interdisciplinary Centres, Lausanne University Hospital, Lausanne, Vaud, Switzerland
- Anaesthesiology, Department of Interdisciplinary Centres, Lausanne University Hospital, Lausanne, Vaud, Switzerland
| | - Jean-Daniel Rouvé
- Anaesthesiology, Department of Interdisciplinary Centres, Lausanne University Hospital, Lausanne, Vaud, Switzerland
| | - L Suppan
- Division of Emergency Medicine, Department of Anaesthesiology, Clinical Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, Geneve, Switzerland
| | - David Caillet-Bois
- Emergency Department, Department of Interdisciplinary Centres, Lausanne University Hospital, Lausanne, Vaud, Switzerland
| | - Thomas Riva
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital Bern, Bern, Switzerland
- Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Roland Albrecht
- Medicine, REGA, Zurich, Switzerland
- Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Andreas Krüger
- Department of Research and Development, Norwegian Air Ambulance Foundation, Drøbak, Norway
- Department of Emergency Medicine and Prehospital Services, St. Olavs University Hospital, Trondheim, Norway
- Institute of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Stephen Johan Mikal Sollid
- Department of Research and Development, Norwegian Air Ambulance Foundation, Drøbak, Norway
- Faculty of Health Sciences, University of Stavanger, Stavanger, Norway
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Caceres E, Divani AA, Rubinos CA, Olivella-Gómez J, Viñán-Garcés AE, González A, Alvarado-Arias A, Bathia K, Samadani U, Reyes LF. PaCO2 Association with Traumatic Brain Injury Patients Outcomes at High Altitude: A Prospective Single-Center Cohort Study. RESEARCH SQUARE 2024:rs.3.rs-3876988. [PMID: 38343855 PMCID: PMC10854293 DOI: 10.21203/rs.3.rs-3876988/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Background partial pressure of carbon dioxide (PaCO2) is generally known to influence outcome in patients with traumatic brain injury (TBI) at normal altitudes. Less is known about specific relationships of PaCO2 levels and clinical outcomes at high altitudes. Methods This is a prospective single-center cohort of consecutive TBI patients admitted to a trauma center located at 2600 meter above sea level. An unfavorable outcome was defined as the Glasgow Outcome Scale-Extended (GOSE) < 4 at 6-month follow-up. Results 81 patients with complete data, 80% (65/81) were men, and median (IQR) age was 36 (25-50) years). Median Glasgow Coma Scale (GCS) on admission was 9 (6-14), 49% (40/81) were severe (GCS: 3-8), 32% (26/81) moderate (GCS 12 - 9), and 18% (15/81) mild (GCS 13-15) TBI. The median (IQR) Abbreviated Injury Score of the Head (AISh) was 3 (2-4). Frequency of an unfavorable outcome (GOSE < 4) was 30% (25/81), median GOSE was 4 (2-5), and 6-month mortality was 24% (20/81). Comparison between patients with favorable and unfavorable outcomes revealed that those with unfavorable outcome were older, median [49 (30-72) vs. 29 (22-41), P < 0.01], had lower admission GCS [6 (4-8) vs. 13 (8-15), P < 0.01], higher AIS head [4 (4-4) vs. 3(2-4), p < 0.01], higher APACHE II score [17(15-23) vs 10 (6-14), < 0.01), higher Charlson score [0(0-2) vs. 0 (0-0), P < 0.01] and higher PaCO2 (mmHg), mean ± SD, 39 ± 9 vs. 32 ± 6, P < 0.01. In a multivariate analysis, age (OR 1.14 95% CI 1.1-1.30, P < 0.01), AISh (OR 4.7 95% CI 1.55-21.0, P < 0.05), and PaCO2 (OR 1.23 95% CI: 1.10-1.53, P < 0.05) were significantly associated with the unfavorable outcomes. When applying the same analysis to the subgroup on mechanical ventilation, AISh (OR 5.4 95% CI: 1.61-28.5, P = 0.017) and PaCO2 (OR 1.36 95% CI: 1.13-1.78, P = 0.015) remained significantly associated with the unfavorable outcome. Conclusion Higher PaCO2 levels are associated with an unfavorable outcome in ventilated TBI patients. These results underscore the importance of PaCO2 level in TBI patients and whether it should be adjusted for populations living at higher altitudes.
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Affiliation(s)
| | - Afshin A Divani
- University of New Mexico - Albuquerque: The University of New Mexico
| | - Clio A Rubinos
- University of North Carolina at Chapel Hill Health Sciences Library: The University of North Carolina at Chapel Hill
| | | | | | | | - Alexis Alvarado-Arias
- University of Mississippi University Hospital: The University of Mississippi Medical Center
| | - Kunal Bathia
- University of Mississippi University Hospital: The University of Mississippi Medical Center
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Bossers SM, Mansvelder F, Loer SA, Boer C, Bloemers FW, Van Lieshout EMM, Den Hartog D, Hoogerwerf N, van der Naalt J, Absalom AR, Schwarte LA, Twisk JWR, Schober P. Association between prehospital end-tidal carbon dioxide levels and mortality in patients with suspected severe traumatic brain injury. Intensive Care Med 2023; 49:491-504. [PMID: 37074395 DOI: 10.1007/s00134-023-07012-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/19/2023] [Indexed: 04/20/2023]
Abstract
PURPOSE Severe traumatic brain injury is a leading cause of mortality and morbidity, and these patients are frequently intubated in the prehospital setting. Cerebral perfusion and intracranial pressure are influenced by the arterial partial pressure of CO2 and derangements might induce further brain damage. We investigated which lower and upper limits of prehospital end-tidal CO2 levels are associated with increased mortality in patients with severe traumatic brain injury. METHODS The BRAIN-PROTECT study is an observational multicenter study. Patients with severe traumatic brain injury, treated by Dutch Helicopter Emergency Medical Services between February 2012 and December 2017, were included. Follow-up continued for 1 year after inclusion. End-tidal CO2 levels were measured during prehospital care and their association with 30-day mortality was analyzed with multivariable logistic regression. RESULTS A total of 1776 patients were eligible for analysis. An L-shaped association between end-tidal CO2 levels and 30-day mortality was observed (p = 0.01), with a sharp increase in mortality with values below 35 mmHg. End-tidal CO2 values between 35 and 45 mmHg were associated with better survival rates compared to < 35 mmHg. No association between hypercapnia and mortality was observed. The odds ratio for the association between hypocapnia (< 35 mmHg) and mortality was 1.89 (95% CI 1.53-2.34, p < 0.001) and for hypercapnia (≥ 45 mmHg) 0.83 (0.62-1.11, p = 0.212). CONCLUSION A safe zone of 35-45 mmHg for end-tidal CO2 guidance seems reasonable during prehospital care. Particularly, end-tidal partial pressures of less than 35 mmHg were associated with a significantly increased mortality.
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Affiliation(s)
- Sebastiaan M Bossers
- Department of Anesthesiology, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
| | - Floor Mansvelder
- Department of Anesthesiology, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Stephan A Loer
- Department of Anesthesiology, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Christa Boer
- Department of Anesthesiology, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Frank W Bloemers
- Department of Surgery, Amsterdam University Medical Center, Location VUmc, de Boelelaan 1117, Amsterdam, The Netherlands
| | - Esther M M Van Lieshout
- Trauma Research Unit Dept. of Surgery, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Rotterdam, The Netherlands
| | - Dennis Den Hartog
- Trauma Research Unit Dept. of Surgery, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Rotterdam, The Netherlands
| | - Nico Hoogerwerf
- Department of Anesthesiology, Radboud Unversity Medical Center, Geert Grooteplein Zuid 10, Nijmegen, The Netherlands
- Helicopter Emergency Medical Service Lifeliner 3, Zeelandsedijk 10, Volkel, The Netherlands
| | - Joukje van der Naalt
- Department of Neurology, University Medical Center Groningen, Hanzeplein 1, Groningen, The Netherlands
| | - Anthony R Absalom
- Department of Anesthesiology, University Medical Center Groningen, Hanzeplein 1, Groningen, The Netherlands
| | - Lothar A Schwarte
- Department of Anesthesiology, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
- Helicopter Emergency Medical Service Lifeliner 1, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Jos W R Twisk
- Department of Epidemiology and Biostatistics, Amsterdam University Medical Center, De Boelelaan 1089a, Amsterdam, The Netherlands
| | - Patrick Schober
- Department of Anesthesiology, Amsterdam University Medical Center, Location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
- Helicopter Emergency Medical Service Lifeliner 1, De Boelelaan 1117, Amsterdam, The Netherlands
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5
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Wiles MD. Management of traumatic brain injury: a narrative review of current evidence. Anaesthesia 2022; 77 Suppl 1:102-112. [DOI: 10.1111/anae.15608] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2021] [Indexed: 12/25/2022]
Affiliation(s)
- M. D. Wiles
- Department of Critical Care Sheffield Teaching Hospitals NHS Foundation Trust Sheffield UK
- University of Sheffield Medical School Sheffield UK
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