Usefulness of lung ultrasound in patients with acute coronary syndrome
Abstract Background The development of heart failure (HF) is a factor of poor prognosis in patients admitted due to acute coronary syndrome (ACS). Research question The aim of this study is to establish the usefulness of lung ultrasound (LU) to predict patients at risk of developing HF and the need for mechanical ventilation. Methods Prospective study with consecutive inclusion of patients with ACS type infarction without HF on admission and admitted to our centre between February 2017 and 2018. A lung ultrasound was performed in the first 24 hours, considering it positive when they presented 3 or more B lines in two or more quadrants of bilateral form. The result was related to the need for mechanical ventilation. Results We included 119 patients (65.1±12.8 years, 75.6% men), 12.6% presented a need for mechanical ventilation. Patients with a positive LU adjusted for a history of atrial fibrillation and the Killip-Kimball class have a risk 72.79 [95% CI: (9.21, 575.28)] times higher than needing mechanical ventilation at any time of the follow-up Adjusted for sex and heart rate, the result is 101.28 [95% CI: (12.83, 799.15); p=0.00005] times more risk of needing mechanical ventilation at any time of follow-up. Conclusions LU has a high positive predictive value for the development of severe HF and the need for mechanical ventilation, in patients admitted for ACS. Our findings suggest that LU should be incorporated in the initial stratification of patients with ACS. Survival analysis mechanical ventilation Funding Acknowledgement Type of funding source: None