Acute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United States

Abstract Background Acute pulmonary edema (APE) is a rare complication of subarachnoid hemorrhage (SAH) that is associated with increased morbidity and poor clinical outcomes. There is limited literature addressing the incidence and risk factors of this complication, highlighting the need for furthe...

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Main Authors: Alejandro Pando, Anil Kumar Tenneli, T. Pradeep, Priyanka Augustine, Balamurali Krishna, Jeffrey Pradeep Raj
Format: Article
Language:English
Published: BMC 2025-05-01
Series:Journal of Intensive Care
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Online Access:https://doi.org/10.1186/s40560-025-00796-w
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author Alejandro Pando
Anil Kumar Tenneli
T. Pradeep
Priyanka Augustine
Balamurali Krishna
Jeffrey Pradeep Raj
author_facet Alejandro Pando
Anil Kumar Tenneli
T. Pradeep
Priyanka Augustine
Balamurali Krishna
Jeffrey Pradeep Raj
author_sort Alejandro Pando
collection DOAJ
description Abstract Background Acute pulmonary edema (APE) is a rare complication of subarachnoid hemorrhage (SAH) that is associated with increased morbidity and poor clinical outcomes. There is limited literature addressing the incidence and risk factors of this complication, highlighting the need for further investigation as undertaken in the present study. Methods The 2016 to 2021 National Inpatient Sample (NIS) was used to identify adult inpatients with a primary diagnosis of non-traumatic SAH. Univariate and multivariable analyses adjusting for patient demographics, and comorbidity status, were used to characterize statistical associations with APE. Results A total of 42,141 patients were identified as having SAH from 2016 to 2021. Of these patients, 960 patients (2.3%) were found to have APE. APE was associated with increased length of stay (20.0 ± 18.9 days vs. 11.6 ± 14.3, p < 0.001), increased total costs ($503,671.3 ± 647,729.9 vs. $238,724.6 ± 328,062.1, p < 0.001), increased number of days from admission to first procedure (3.5 ± 7.3 vs. 1.9 ± 4.9, p < 0.001), increased Elixhauser comorbidity index ≥ 3 (77.5% vs. 66.0%, p < 0.001), and increased mortality (40.2% vs. 22.5%, p < 0.001). After controlling for confounding factors, independent risk factors for APE in patients with non-traumatic SAH included: Coagulopathies (adjusted Odds Ratio [aOR]: 1.57, 95% confidence interval [CI] 1.31–1.89, p < 0.001), Fluid and Electrolyte Disorders (aOR: 2.54, CI 2.13–3.03, p < 0.001), Liver Disease (aOR: 1.37, CI 1.07–1.76, p = 0.013), Obesity (aOR: 1.47, CI 1.19–1.81, p = 0.003), Pulmonary Circulatory Disorder (aOR: 1.72, CI 1.31–2.26, p = 0.001), and Weight Loss (aOR: 1.67, CI 1.36–2.04, p < 0.001). Conclusion APE after SAH is associated with increased complicated hospital course. Neurosurgeons and Neurocritical care medical professionals should be aware of the comorbidities and factors associated with increased APE after SAH to improve patient outcomes.
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spelling doaj-art-1f3ccbe4176d4ac386ec6d85646858632025-08-20T03:10:20ZengBMCJournal of Intensive Care2052-04922025-05-0113111010.1186/s40560-025-00796-wAcute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United StatesAlejandro Pando0Anil Kumar Tenneli1T. Pradeep2Priyanka Augustine3Balamurali Krishna4Jeffrey Pradeep Raj5Department of Neurological Surgery, Rutgers New Jersey Medical School, Rutgers Robert Wood Johnson Medical SchoolDepartment of Pediatrics, Indira Gandhi Institute of Child HealthDepartment of Pharmacology, Karpagam Faculty of Medical Sciences and ResearchInternal Medicine Trainee-Department of Respiratory Medicine, Sheffield Teaching HospitalsDepartment of Respiratory Medicine, KLES Dr Prabhakar Kore Hospital & Medical Research CentreDivision of Clinical Pharmacology, Department of Pharmacology, Kasturba Medical College Manipal, Manipal Academy of Higher EducationAbstract Background Acute pulmonary edema (APE) is a rare complication of subarachnoid hemorrhage (SAH) that is associated with increased morbidity and poor clinical outcomes. There is limited literature addressing the incidence and risk factors of this complication, highlighting the need for further investigation as undertaken in the present study. Methods The 2016 to 2021 National Inpatient Sample (NIS) was used to identify adult inpatients with a primary diagnosis of non-traumatic SAH. Univariate and multivariable analyses adjusting for patient demographics, and comorbidity status, were used to characterize statistical associations with APE. Results A total of 42,141 patients were identified as having SAH from 2016 to 2021. Of these patients, 960 patients (2.3%) were found to have APE. APE was associated with increased length of stay (20.0 ± 18.9 days vs. 11.6 ± 14.3, p < 0.001), increased total costs ($503,671.3 ± 647,729.9 vs. $238,724.6 ± 328,062.1, p < 0.001), increased number of days from admission to first procedure (3.5 ± 7.3 vs. 1.9 ± 4.9, p < 0.001), increased Elixhauser comorbidity index ≥ 3 (77.5% vs. 66.0%, p < 0.001), and increased mortality (40.2% vs. 22.5%, p < 0.001). After controlling for confounding factors, independent risk factors for APE in patients with non-traumatic SAH included: Coagulopathies (adjusted Odds Ratio [aOR]: 1.57, 95% confidence interval [CI] 1.31–1.89, p < 0.001), Fluid and Electrolyte Disorders (aOR: 2.54, CI 2.13–3.03, p < 0.001), Liver Disease (aOR: 1.37, CI 1.07–1.76, p = 0.013), Obesity (aOR: 1.47, CI 1.19–1.81, p = 0.003), Pulmonary Circulatory Disorder (aOR: 1.72, CI 1.31–2.26, p = 0.001), and Weight Loss (aOR: 1.67, CI 1.36–2.04, p < 0.001). Conclusion APE after SAH is associated with increased complicated hospital course. Neurosurgeons and Neurocritical care medical professionals should be aware of the comorbidities and factors associated with increased APE after SAH to improve patient outcomes.https://doi.org/10.1186/s40560-025-00796-wSubarachnoid hemorrhagePulmonary edemaNeurogenic pulmonary edemaNational inpatient sampleRisk factorsComorbidity
spellingShingle Alejandro Pando
Anil Kumar Tenneli
T. Pradeep
Priyanka Augustine
Balamurali Krishna
Jeffrey Pradeep Raj
Acute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United States
Journal of Intensive Care
Subarachnoid hemorrhage
Pulmonary edema
Neurogenic pulmonary edema
National inpatient sample
Risk factors
Comorbidity
title Acute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United States
title_full Acute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United States
title_fullStr Acute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United States
title_full_unstemmed Acute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United States
title_short Acute pulmonary edema after subarachnoid hemorrhage: risk factors and comorbidities—an analysis of a nationwide database from the United States
title_sort acute pulmonary edema after subarachnoid hemorrhage risk factors and comorbidities an analysis of a nationwide database from the united states
topic Subarachnoid hemorrhage
Pulmonary edema
Neurogenic pulmonary edema
National inpatient sample
Risk factors
Comorbidity
url https://doi.org/10.1186/s40560-025-00796-w
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