Association of Ventilator Type with Hospital Mortality in Critically Ill Patients with SARS-CoV2 Infection: A Retrospective Study.

2021 ◽  
Author(s):  
Alexis FERRE ◽  
Fabien Marquion ◽  
Marc Delord ◽  
Jean-Pierre Bédos ◽  
Hugo Bellut ◽  
...  
Keyword(s):  
Hospital Mortality ◽  
Multivariate Regression ◽  
Distress Syndrome ◽  
Invasive Mechanical Ventilation ◽  
Patient Characteristics ◽  
Tertiary Hospital ◽  
Prospective Data ◽  
Factors Associated ◽  
Kaplan Meier ◽  
Patient Groups

Abstract Background: To evaluate the association between ventilator type and hospital mortality in patients with acute respiratory distress syndrome (ARDS) related to COVID-19 (SARS-CoV2 infection) during the first wave of the disease in France.Methods: We retrospectively included consecutive adults admitted to the intensive care unit (ICU) of a university-affiliated tertiary hospital for ARDS related to proven COVID-19, between March and May 2020. All patients were intubated. We compared two patient groups defined by whether an ICU ventilator or a less sophisticated ventilator such as a transport ventilator was used. Kaplan-Meier survival curves were plotted. Cox multivariate regression was performed to identify associations between patient characteristics and hospital mortality.Results: We included 82 patients (61 [74.4%] men) with a median age of 64 years [55–74], of whom 23 (28.1%) died before hospital discharge. By multivariate analysis, factors associated with in-hospital mortality were older age (HR, 1.06/year; 95%CI, 1.00–1.11; P=0.05) and diabetes mellitus (HR, 3.32; 95%CI, 1.13–9.76; P=0.03) but not ventilator type. Using non-ICU ventilator was associated neither with a longer duration of invasive mechanical ventilation (20 [12-36] vs. 25 [15-31] days; P=0.87) nor with a longer ICU stay (24 [14-40] vs. 27 [15-37] days; P=0.64).Conclusions: In patients with ARDS due to COVID-19, the use of non-ICU ventilators, such as transport ventilators, was not associated with worse outcomes. Although prospective data are needed to confirm our findings, this study suggests that transport ventilators may be valuable during COVID-19 surges that overwhelm ICU resources.

scholarly journals Predictors of Mortality in COPD Exacerbation Cases Presenting to the Respiratory Intensive Care Unit

2020 ◽  
Author(s):  
Yang Cao ◽  
Zhenzhen Xing ◽  
Huangyu Long ◽  
Yilin Huang ◽  
Yanfei Guo
Keyword(s):  
Risk Factors ◽  
Intensive Care Unit ◽  
Intensive Care ◽  
Hospital Mortality ◽  
Multiple Logistic Regression Analysis ◽  
Invasive Mechanical Ventilation ◽  
Tertiary Hospital ◽  
Chronic Obstructive ◽  
Record System ◽  
Factors Associated

Abstract Background: Studies report high in-hospital mortality of chronic obstructive pulmonary disease (COPD) exacerbations especially for those who requiring intensive care unit (ICU) admission. Recognizing factors associated with mortality in those patients could reduce healthcare costs and improve end-of-life care. Methods: This retrospective cohort study included 384 patients with AECOPD admitted to the respiratory ICU (RICU) of a tertiary hospital in Beijing from Jan 1, 2011 to Dec 31, 2018. Patients demographic characteristic, blood test results and comorbidities were extracted from the electronic medical record system and compared between survivors and non-survivors. Results: We finally enrolled 384 AECOPD patients, 44 (11.5%) patients died in hospital and 340 (88.5%) were discharged. The most common comorbidity was respiratory failure (294 (76.6%)), followed by hypertension (214 (55.7%)), coronary heart disease (CHD, 115 (29.9%)) and chronic heart failure (CHF, (76 (19.8%)). Multiple logistic regression analysis revealed the independent risk factors associated with in-hospital mortality included lymphocytopenia, leukopenia combined with CHF and the requirement for invasive mechanical ventilation (IMV).Conclusions: The in-hospital mortality of patients with COPD exacerbation requiring RICU admission is high. Lymphocytes<0.8×109/L, leukopenia, requirement for IMV, combined with CHF could be identified as risk factors associated with increased mortality rates.

Outcome of Acute Hypoxaemic Respiratory Failure. Insights from the Lung Safe Study

2020 ◽  
pp. 2003317
Author(s):  
Tài Pham ◽  
Antonio Pesenti ◽  
Giacomo Bellani ◽  
Gordon Rubenfeld ◽  
Eddy Fan ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Respiratory Failure ◽  
Hospital Mortality ◽  
Distress Syndrome ◽  
Pulmonary Involvement ◽  
Positive End Expiratory Pressure ◽  
Factors Associated ◽  
Risk Of Death ◽  
Increased Risk ◽  
Current Incidence

BackgroundThe current incidence and outcome of patients with acute hypoxaemic respiratory failure requiring mechanical ventilation in intensive care unit are unknown, especially for patients not meeting criteria for acute respiratory distress syndrome (ARDS).MethodsAn international, multicentre, prospective cohort study of patients presenting with hypoxemia early in the course of mechanical ventilation, conducted during four consecutive weeks in the winter of 2014 in 459 ICUs from 50 countries (LUNG SAFE). Patients were enrolled with PaO2/FiO2 ≤300 mmHg, new pulmonary infiltrates and need for mechanical ventilation with a positive end-expiratory pressure (PEEP) of at least 5 cm H2O. ICU prevalence, causes of hypoxemia, hospital survival, factors associated with hospital mortality were measured. Patients with unilateral versus bilateral opacities were compared.Findings12 906 critically ill patients received mechanical ventilation and 34.9% with hypoxaemia and new infiltrates were enrolled, separated into ARDS (69.0%), unilateral infiltrate (22.7%) and congestive heart failure (8.2%, CHF). The global hospital mortality was 38.6%. CHF patients had a mortality comparable to ARDS (44.1%versus 40.4%). Patients with unilateral-infiltrate had lower unadjusted mortality but similar adjusted mortality than ARDS. The number of quadrants on chest imaging was associated with an increased risk of death. There was no difference in mortality comparing patients with unilateral-infiltrate and ARDS with only 2 quadrants involved.InterpretationMore than one third of the patients receiving mechanical ventilation have hypoxaemia and new infiltrates with an hospital mortality of 38.6%. Survival is dependent on the degree of pulmonary involvement whether or not ARDS criteria are reached.

scholarly journals Higher Versus Lower Positive End-Expiratory Pressure in Patients Without Acute Respiratory Distress Syndrome: A Meta-Analysis of Randomized Controlled Trials

2021 ◽  
Author(s):  
Tommaso Pettenuzzo ◽  
Annalisa Boscolo ◽  
Alessandro De Cassai ◽  
Nicolò Sella ◽  
Francesco Zarantonello ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Acute Respiratory Distress Syndrome ◽  
Hospital Mortality ◽  
Distress Syndrome ◽  
Meta Analysis ◽  
Invasive Mechanical Ventilation ◽  
Controlled Trials ◽  
Positive End Expiratory Pressure ◽  
Randomized Controlled ◽  
Duration Of Ventilation

Abstract Background: We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to assess the association of higher positive end-expiratory pressure (PEEP), as opposed to lower PEEP, with hospital mortality in adult intensive care unit (ICU) patients undergoing invasive mechanical ventilation for reasons other than acute respiratory distress syndrome (ARDS). Methods: We performed an electronic search of MEDLINE, EMBASE, Scopus, Cochrane Central Register of Controlled Trials, CINAHL, and Web of Science from inception until December 18, 2020 with no language restrictions. In addition, a research-in-progress database and grey literature were searched. Results: We identified 22 RCTs (2225 patients) comparing higher PEEP (1007 patients) with lower PEEP (991 patients). No statistically significant association between higher PEEP and hospital mortality was observed (risk ratio 1.02, 95% confidence interval 0.89-1.16; I2 = 0%, p = 0.62; low certainty of evidence). Among secondary outcomes, higher PEEP was associated with better oxygenation, higher respiratory system compliance, and lower risk of hypoxemia and ARDS occurrence. Furthermore, barotrauma, hypotension, duration of ventilation, lengths of stay, and ICU mortality were similar between the two groups. Conclusions: In our meta-analysis of RCTs, higher PEEP, compared with lower PEEP, was not associated with mortality or duration of ventilation in patients without ARDS receiving invasive mechanical ventilation, despite being associated with improved oxygenation and lower occurrence of ARDS.

scholarly journals Interim Analysis of Risk Factors for Severe Outcomes among a Cohort of Hospitalized Adults Identified through the U.S. Coronavirus Disease 2019 (COVID-19)-Associated Hospitalization Surveillance Network (COVID-NET)

2020 ◽  
Author(s):  
Lindsay Kim ◽  
Shikha Garg ◽  
Alissa O'Halloran ◽  
Michael Whitaker ◽  
Huong Pham ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hospital Mortality ◽  
Invasive Mechanical Ventilation ◽  
The United States ◽  
Surveillance Network ◽  
Adjusted Risk ◽  
Factors Associated ◽  
Icu Admission ◽  
Male Sex ◽  
Race Ethnicity

Background: As of May 15, 2020, the United States has reported the greatest number of coronavirus disease 2019 (COVID-19) cases and deaths globally. Objective: To describe risk factors for severe outcomes among adults hospitalized with COVID-19. Design: Cohort study of patients identified through the Coronavirus Disease 2019-Associated Hospitalization Surveillance Network. Setting: 154 acute care hospitals in 74 counties in 13 states. Patients: 2491 patients hospitalized with laboratory-confirmed COVID-19 during March 1-May 2, 2020. Measurements: Age, sex, race/ethnicity, and underlying medical conditions. Results: Ninety-two percent of patients had at least 1 underlying condition; 32% required intensive care unit (ICU) admission; 19% invasive mechanical ventilation; 15% vasopressors; and 17% died during hospitalization. Independent factors associated with ICU admission included ages 50-64, 65-74, 75-84 and 85+ years versus 18-39 years (adjusted risk ratio (aRR) 1.53, 1.65, 1.84 and 1.43, respectively); male sex (aRR 1.34); obesity (aRR 1.31); immunosuppression (aRR 1.29); and diabetes (aRR 1.13). Independent factors associated with in-hospital mortality included ages 50-64, 65-74, 75-84 and 85+ years versus 18-39 years (aRR 3.11, 5.77, 7.67 and 10.98, respectively); male sex (aRR 1.30); immunosuppression (aRR 1.39); renal disease (aRR 1.33); chronic lung disease (aRR 1.31); cardiovascular disease (aRR 1.28); neurologic disorders (aRR 1.25); and diabetes (aRR 1.19). Race/ethnicity was not associated with either ICU admission or death. Limitation: Data were limited to patients who were discharged or died in-hospital and had complete chart abstractions; patients who were still hospitalized or did not have accessible medical records were excluded. Conclusion: In-hospital mortality for COVID-19 increased markedly with increasing age. These data help to characterize persons at highest risk for severe COVID-19-associated outcomes and define target groups for prevention and treatment strategies.

scholarly journals Effects of Cytokine Blocking Agents on 30-Day Mortality in Patients Admitted to ICU With Acute Respiratory Distress Syndrome by SARS-CoV2 Infection: An Observational Cohort Study

2020 ◽  
Author(s):  
Irene Coloretti ◽  
Stefano Busani ◽  
Emanuela Biagioni ◽  
Sophie Venturelli ◽  
Elena Munari ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Acute Respiratory Distress Syndrome ◽  
Cohort Study ◽  
Hospital Mortality ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Distress Syndrome ◽  
Cox Model ◽  
Invasive Mechanical Ventilation ◽  
Blocking Agents

Abstract Background The use of cytokine-blocking agents has been proposed to modulate the inflammatory response in patients with COVID19. Tocilizumab and Anakinra were included in the local protocol as an optional treatment in critically ill patients with acute respiratory distress syndrome (ARDS) by SARS-CoV2 infection. This cohort study evaluated the effects of therapy with cytokine blocking agents on in-hospital mortality in COVID19 patients requiring mechanical ventilation and admitted to intensive care unit. Methods The association between therapy with Tocilizumab or Anakinra and in-hospital mortality was assessed in consecutive adult COVID19 patients admitted to our ICU with moderate to severe ARDS. The association was evaluated by comparing patients who receive to those who did not receive Tocilizumab or Anakinra and by using different multivariable Cox models adjusted for variables related to poor outcome, for the propensity to be treated with Tocilizumab or Anakinra and after patient matching. Results Sixty-six patients who received immunotherapy (49 Tocilizumab, 17 Anakinra) and 28 patients who did not receive immunotherapy were included. The in-hospital crude mortality was 30,3% in treated patients and 50% in non-treated (OR 0,77, 95% CI 0,56-1,05, p=0,069). The adjusted Cox model showed an association between therapy with immunotherapy and in-hospital mortality (HR 0,35, 95% CI 0,16-0,77, p=0,009). This protective effect was further confirmed in the analysis adjusted for propensity score, in the propensity-matched cohort and in the cohort of patients with invasive mechanical ventilation within 2 hours after ICU admission. Conclusions Although important limitations, our study showed that cytokine-blocking agents seem to be safe and to improve survival in COVID-19 patients admitted to ICU with ARDS and the need of mechanical ventilation.

scholarly journals Effects of Cytokine Blocking Agents on Hospital Mortality in Patients Admitted to ICU With Acute Respiratory Distress Syndrome by SARS-CoV2 Infection: An Observational Cohort Study

2020 ◽  
Author(s):  
Irene Coloretti ◽  
Stefano Busani ◽  
Emanuela Biagioni ◽  
Sophie Venturelli ◽  
Elena Munari ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Acute Respiratory Distress Syndrome ◽  
Cohort Study ◽  
Hospital Mortality ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Distress Syndrome ◽  
Cox Model ◽  
Invasive Mechanical Ventilation ◽  
Blocking Agents

Abstract Background The use of cytokine-blocking agents has been proposed to modulate the inflammatory response in patients with COVID19. Tocilizumab and Anakinra were included in the local protocol as an optional treatment in critically ill patients with acute respiratory distress syndrome (ARDS) by SARS-CoV2 infection. This cohort study evaluated the effects of therapy with cytokine blocking agents on in-hospital mortality in COVID19 patients requiring mechanical ventilation and admitted to intensive care unit. Methods The association between therapy with Tocilizumab or Anakinra and in-hospital mortality was assessed in consecutive adult COVID19 patients admitted to our ICU with moderate to severe ARDS. The association was evaluated by comparing patients who receive to those who did not receive Tocilizumab or Anakinra and by using different multivariable Cox models adjusted for variables related to poor outcome, for the propensity to be treated with Tocilizumab or Anakinra and after patient matching. Results Sixty-six patients who received immunotherapy (49 Tocilizumab, 17 Anakinra) and 28 patients who did not receive immunotherapy were included. The in-hospital crude mortality was 30,3% in treated patients and 50% in non-treated (OR 0,77, 95% CI 0,56-1,05, p=0,069). The adjusted Cox model showed an association between therapy with immunotherapy and in-hospital mortality (HR 0,35, 95% CI 0,16-0,77, p=0,009). This protective effect was further confirmed in the analysis adjusted for propensity score, in the propensity-matched cohort and in the cohort of patients with invasive mechanical ventilation within 2 hours after ICU admission. Conclusions Although important limitations, our study showed that cytokine-blocking agents seem to be safe and to improve survival in COVID-19 patients admitted to ICU with ARDS and the need of mechanical ventilation.

Drug-Induced Sleep Endoscopy Performed in the Endoscopy Suite: A Resource Utilization Analysis

2020 ◽  
Vol 162 (3) ◽  
pp. 386-391
Author(s):  
Shabnam Ghazizadeh ◽  
Kyasha Moore ◽  
Kianusch Kiai ◽  
Abie H. Mendelsohn
Keyword(s):  
Resource Utilization ◽  
Patient Characteristics ◽  
Tertiary Hospital ◽  
Postoperative Recovery ◽  
Apnea Hypopnea Index ◽  
Sleep Endoscopy ◽  
Surgical Time ◽  
Drug Induced ◽  
Drug Induced Sleep Endoscopy ◽  
Patient Groups

Objectives To analyze the resource utilization of performing drug-induced sleep endoscopy (DISE) procedures in an endoscopy suite (ES) setting as compared with the operating room (OR). Study Design A retrospective review of DISE procedures performed by a single attending surgeon from 2016 to 2018. Setting Tertiary hospital. Subjects and Methods All patients undergoing sleep endoscopy without concurrent surgical procedures were included. No exclusion criteria were incorporated. Analysis assessed for differences in procedure-related expenditures, patient characteristics, anesthesia and surgeon time, and access to care. Results A total of 87 sleep endoscopies were included: 65 (74.7%) performed in the ES and 22 (25.3%) in the OR. Patient groups were similar in age and apnea-hypopnea index severity ( P > .05). Patient body mass index was significantly higher for the ES group ( P = .03). Total facility time, postoperative recovery time, anesthesia care time, and time in the surgical room were significantly decreased in the ES setting ( P < .01). Surgical time was similar between the groups ( P > .05). For ES procedures, total cost was reduced by 74% ( P < .01). DISE in the ES resulted in a mean $5080 less in health system charges versus the OR group ( P < .01). There were no treatment-related complications in either setting. Conclusion The resource utilization profile of performing DISE can be significantly improved by transferring these procedures from the OR to the ES setting.

scholarly journals Association between lung compliance phenotypes and mortality in COVID-19 patients with acute respiratory distress syndrome

2021 ◽  
Vol 50 (9) ◽  
pp. 686-694
Author(s):  
Ser Hon Puah ◽  
Matthew Edward Cove ◽  
Jason Phua ◽  
Amit Kansal ◽  
Jonathen Venkatachalam ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Distress Syndrome ◽  
Invasive Mechanical Ventilation ◽  
Lung Compliance ◽  
High Compliance ◽  
Factors Associated ◽  
Risk Of Death

ABSTRACT Introduction: Acute respiratory distress syndrome (ARDS) in COVID-19 is associated with a high mortality rate, though outcomes of the different lung compliance phenotypes are unclear. We aimed to measure lung compliance and examine other factors associated with mortality in COVID-19 patients with ARDS. Methods: Adult patients with COVID-19 ARDS who required invasive mechanical ventilation at 8 hospitals in Singapore were prospectively enrolled. Factors associated with both mortality and differences between high (<40mL/cm H2O) and low (<40mL/cm H2O) compliance were analysed. Results: A total of 102 patients with COVID-19 who required invasive mechanical ventilation were analysed; 15 (14.7%) did not survive. Non-survivors were older (median 70 years, interquartile range [IQR] 67–75 versus median 61 years, IQR 52–66; P<0.01), and required a longer duration of ventilation (26 days, IQR 12–27 vs 8 days, IQR 5–15; P<0.01) and intensive care unit support (26 days, IQR 11–30 vs 11.5 days, IQR 7–17.3; P=0.01), with a higher incidence of acute kidney injury (15 patients [100%] vs 40 patients [46%]; P<0.01). There were 67 patients who had lung compliance data; 24 (35.8%) were classified as having high compliance and 43 (64.2%) as having low compliance. Mortality was higher in patients with high compliance (33.3% vs 11.6%; P=0.03), and was associated with a drop in compliance at day 7 (-9.3mL/cm H2O (IQR -4.5 to -15.4) vs 0.2mL/cm H2O (4.7 to -5.2) P=0.04). Conclusion: COVID-19 ARDS patients with higher compliance on the day of intubation and a longitudinal decrease over time had a higher risk of death. Keywords: ARDS, COVID-19-associated respiratory failure, high-flow nasal cannula therapy, HFNC, post-intubation, ventilation strategies

scholarly journals Higher versus lower positive end-expiratory pressure in patients without acute respiratory distress syndrome: a meta-analysis of randomized controlled trials

Critical Care ◽  
2021 ◽  
Vol 25 (1) ◽  
Author(s):  
Tommaso Pettenuzzo ◽  
Annalisa Boscolo ◽  
Alessandro De Cassai ◽  
Nicolò Sella ◽  
Francesco Zarantonello ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Acute Respiratory Distress Syndrome ◽  
Hospital Mortality ◽  
Respiratory Distress Syndrome ◽  
Distress Syndrome ◽  
Meta Analysis ◽  
Invasive Mechanical Ventilation ◽  
Controlled Trials ◽  
Positive End Expiratory Pressure ◽  
Randomized Controlled

Abstract Background We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to assess the association of higher positive end-expiratory pressure (PEEP), as opposed to lower PEEP, with hospital mortality in adult intensive care unit (ICU) patients undergoing invasive mechanical ventilation for reasons other than acute respiratory distress syndrome (ARDS). Methods We performed an electronic search of MEDLINE, EMBASE, Scopus, Cochrane Central Register of Controlled Trials, CINAHL, and Web of Science from inception until June 16, 2021 with no language restrictions. In addition, a research-in-progress database and grey literature were searched. Results We identified 22 RCTs (2225 patients) comparing higher PEEP (1007 patients) with lower PEEP (991 patients). No statistically significant association between higher PEEP and hospital mortality was observed (risk ratio 1.02, 95% confidence interval 0.89–1.16; I2 = 0%, p = 0.62; low certainty of evidence). Among secondary outcomes, higher PEEP was associated with better oxygenation, higher respiratory system compliance, and lower risk of hypoxemia and ARDS occurrence. Furthermore, barotrauma, hypotension, duration of ventilation, lengths of stay, and ICU mortality were similar between the two groups. Conclusions In our meta-analysis of RCTs, higher PEEP, compared with lower PEEP, was not associated with mortality in patients without ARDS receiving invasive mechanical ventilation. Further large high-quality RCTs are required to confirm these findings.

scholarly journals Trends in hospitalization and factors associated with in-hospital death among pediatric admissions with implantable cardioverter defibrillators

2021 ◽  
Author(s):  
Amna Qasim ◽  
Tam Dan Pham ◽  
Jeffrey Kim ◽  
Santiago Valdes ◽  
Taylor Howard ◽  
...  
Keyword(s):  
Heart Failure ◽  
Hospital Mortality ◽  
Multivariable Analysis ◽  
Diagnostic Category ◽  
Patient Characteristics ◽  
Hospital Death ◽  
Implantable Cardioverter Defibrillators ◽  
Factors Associated ◽  
Admission Rates ◽  
Hospital Deaths

Background: As pediatric implantable cardioverter defibrillator (ICD) utilization increases, hospital admission rates will increase. Data regarding hospitalizations among pediatric patients with ICDs is lacking. In addition, hospital mortality rates are unknown. This study aimed to evaluate 1) trends in hospitalization rates of admissions over 20 years, 2) hospital mortality, and 3) factors associated with hospital mortality among pediatric admissions with ICDs. Methods: The Kids’ Inpatient Database (2000-2016) was used to identify all hospitalizations with an existing ICD 20 years of age. ICD9/10 codes were used to stratify admissions by underlying diagnostic category as: 1) congenital heart disease (CHD), 2) primary arrhythmia, 3) primary cardiomyopathy, or 4) other. Trends were analyzed using linear regression. Hospital and patient characteristics among hospital deaths were compared to those surviving to discharge using mixed multivariable logistic regression, accounting for hospital clustering. Results: Of 42,570,716 hospitalizations, 4165 were admitted <21 years with an ICD. ICD admissions increased four-fold (p = 0.002) between 2000-2016. Hospital death occurred in 54 (1.3%). In multivariable analysis, cardiomyopathy (OR 3.5, 95%CI 1.1–11.2, p=0.04) and CHD (OR 4.8, 95%CI 1.5–15.6, p=0.01) were significantly associated with mortality. In further exploratory multivariable analysis incorporating a coexisting diagnosis of heart failure, only the presence of heart failure remained associated with mortality (OR 8.6, 95%CI 3.7-20.0, p<0.0001). Conclusions: Pediatric ICD hospitalization are increasing over time and hospital mortality is low (1.3%). Hospital mortality is associated with cardiomyopathy or CHD; however, the underlying driver for in-hospital death may be heart failure.

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