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Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
Published on: October 28, 2020
Prognostic Utility of Right Ventricular Remodeling Over Conventional Risk Stratification in Patients With COVID-19
Jiwon Kim1, Alexander Volodarskiy2, Razia Sultana3
1Division of Cardiology, Weill Cornell Medicine, New York, New York; Department of Radiology, Weill Cornell Medicine, New York, New York.
Insights
Right ventricular remodeling, including dysfunction and dilation, independently predicts mortality in COVID-19 patients. This finding offers crucial prognostic insights beyond existing clinical and biomarker assessments for coronavirus disease 2019.
Area of Science:
- Cardiology
- Infectious Diseases
- Pulmonology
Background:
- Coronavirus disease 2019 (COVID-19) is associated with an increased risk of right ventricular (RV) dysfunction and dilation.
- The prognostic significance of adverse RV remodeling in COVID-19 patients remains unclear.
Purpose of the Study:
- To determine if adverse RV remodeling (dysfunction/dilation) predicts COVID-19 prognosis independently of established clinical and biomarker risk factors.
- To assess the independent prognostic utility of RV remodeling in hospitalized COVID-19 patients.
Main Methods:
- A study of 510 consecutive COVID-19 inpatients across three New York City hospitals.
- Transthoracic echocardiography images were centrally analyzed by a core laboratory blinded to clinical and biomarker data.
- Assessment of RV dilation and dysfunction, and correlation with inpatient mortality and hospital discharge.
Main Results:
- 35% of patients exhibited RV dilation and 15% showed RV dysfunction.
- RV dysfunction and dilation independently predicted mortality (HR: 2.57 and 1.43, respectively).
- Adverse RV remodeling provided additional risk stratification beyond biomarkers, with the highest mortality risk in patients with both RV remodeling and positive biomarkers.
Conclusions:
- Adverse right ventricular remodeling is an independent predictor of mortality in COVID-19 patients.
- Echocardiographic assessment of RV remodeling offers prognostic value beyond standard clinical and biomarker evaluations.
- These findings highlight the importance of evaluating RV status in COVID-19 management.
Background:
Coronavirus disease 2019 (COVID-19) is a growing pandemic that confers augmented risk for right ventricular (RV) dysfunction and dilation; the prognostic utility of adverse RV remodeling in COVID-19 patients is uncertain.
Objectives:
The purpose of this study was to test whether adverse RV remodeling (dysfunction/dilation) predicts COVID-19 prognosis independent of clinical and biomarker risk stratification.
Methods:
Consecutive COVID-19 inpatients undergoing clinical transthoracic echocardiography at 3 New York City hospitals were studied; images were analyzed by a central core laboratory blinded to clinical and biomarker data.
Results:
In total, 510 patients (age 64 ± 14 years, 66% men) were studied; RV dilation and dysfunction were present in 35% and 15%, respectively. RV dysfunction increased stepwise in relation to RV chamber size (p = 0.007). During inpatient follow-up (median 20 days), 77% of patients had a study-related endpoint (death 32%, discharge 45%). RV dysfunction (hazard ratio [HR]: 2.57; 95% confidence interval [CI]: 1.49 to 4.43; p = 0.001) and dilation (HR: 1.43; 95% CI: 1.05 to 1.96; p = 0.02) each independently conferred mortality risk. Patients without adverse RV remodeling were more likely to survive to hospital discharge (HR: 1.39; 95% CI: 1.01 to 1.90; p = 0.041). RV indices provided additional risk stratification beyond biomarker strata; risk for death was greatest among patients with adverse RV remodeling and positive biomarkers and was lesser among patients with isolated biomarker elevations (p ≤ 0.001). In multivariate analysis, adverse RV remodeling conferred a >2-fold increase in mortality risk, which remained significant (p < 0.01) when controlling for age and biomarker elevations; the predictive value of adverse RV remodeling was similar irrespective of whether analyses were performed using troponin, D-dimer, or ferritin.
Conclusions:
Adverse RV remodeling predicts mortality in COVID-19 independent of standard clinical and biomarker-based assessment.
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