Seven Epidemic Waves of COVID-19 in a Hospital in Madrid: Analysis of Severity and Associated Factors.

(1) Background: COVID-19 has evolved during seven epidemic waves in Spain. Our objective was to describe changes in mortality and severity in our hospitalized patients. (2) Method: This study employed a descriptive, retrospective approach for COVID-19 patients admitted to the Hospital de Fuenlabrada (Madrid, Spain) until 31 December 2022.

Comparative Study of Vaccinated and Unvaccinated Hospitalised Patients: A Retrospective Population Study of 500 Hospitalised Patients with SARS-CoV-2 Infection in a Spanish Population of 220,000 Inhabitants.

Objectives: This study aimed to compare the characteristics of fully and partially vaccinated or unvaccinated coronavirus disease 2019 (COVID-19) patients who were hospitalised in a population of 220,000 habitants.

Methods: Retrospective, observational, and population studies were conducted on patients who were hospitalised due to COVID-19 from March to October 2021. We assessed the impact of vaccination and other risk factors through Cox multivariate analysis.

De novo acute heart failure: Clinical features and one-year mortality in the Spanish nationwide Registry of Acute Heart Failure.

Introduction And Objectives: Acute heart failure (AHF), can occur as decompensated chronic heart failure (HF) or as a first episode, "new onset". The aim of this study was to analyse the clinical characteristics and prognosis at one-year in a cohort of patients with new onset AHF.

Methods: Prospective observational study of 3,550 patients with AHF.

Reduction in hospitalisations and emergency department visits for frail patients with heart failure: Results of the UMIPIC healthcare programme.

Objectives: Heart failure (HF) is a disease with high morbidity and mortality. We evaluated the usefulness of the Comprehensive Management Units for Patients with HF (Unidades de Manejo Integral para Pacientes con IC [UMIPIC]) programme.

Patients And Method: We analysed the patient data from the UMIPIC programme, which was recorded in the HF registry (RICA) of the Spanish Society of Internal Medicine.