Impact of vaccination on electrocardiograms of hospitalized patients for Covid-19.

Introduction: We sought to assess the impact of SarsCov-2 vaccination on admission12-lead electrocardiogram of hospitalized patients. Methods: We retrospectively analyzed and compared admission 12-lead electrocardiograms of all patients hospitalized in dedicated Internal Medicine Unit for Covid-19 both in pre-vaccination period (PV) and after vaccination (V). Results: 667 consecutive Covid-19 in-patients were enrolled in the study: PV hospitalized patients were older (68vs57 years, p < 0.01), had higher rates of atrial fibrillation/flutter (13%vs2.5%, p < 0.01), any arrhythmia (26%vs8%, p < 0.01), and ST-T abnormalities (22%vs7.4%, p < 0.01). Mortality rates in hospitalized Covid-19 patients were higher before vaccination period (20%vs4%, p < 0.01). Minimal vaccination coverage of population (V period) was inversely and independently associated with in-hospital mortality (odds ratio 0.09, 95%CI 0.01-0.68, p < 0.05). Conclusions: SarsCov-2 vaccination campaign and even partial coverage of local population was associated with less frequent abnormalities at admission ECG in hospitalized non-critically hill Covid-19 patients and lower mortality.

Safety and heart rate changes in Covid-19 patients treated with Remdesivir.

OBJECTIVES: Limited data are available regarding the occurrence and the extent of cardiac rhythm disturbances in patients with COVID-19 treated with Remdesivir. METHODS: We present a case series of 52 patients who underwent daily electrocardiogram (ECG) examination after Remdesivir administration. RESULTS: Compared to baseline, a significant heart rate reduction was observed after initiation of Remdesivir; however, no case of severe bradycardia or arrhythmias leading to significant clinical complications or Remdesivir discontinuation occurred. Heart rate reduction was proportional to baseline heart rate values (r=0.75, p<0.001). By multivariate analysis, a less severe clinical presentation of Covid-19 (beta=0.47, p<0.01) was related to lower heart rate levels observed after Remdesivir administration. CONCLUSIONS: Despite a significant reduction in heart rate observed after Remdesivir administration, no severe cardiovascular toxicity was observed in Covid-19 patients, even in the case of cardiovascular comorbidities.

Efficacy and Safety of Remdesivir over Two Waves of the SARS-CoV-2 Pandemic.

The aim of this study is to describe the features, the outcomes, and the clinical issues related to Remdesivir administration of a cohort of 220 patients (pts) with COVID-19 hospitalized throughout the last two pandemic waves in Italy. One hundred and nine pts were enrolled from 1 September 2020, to 28 February 2021 (Group A) and 111 from 1 March to 30 September 2021 (Group B). Notably, no differences were reported between the two groups neither in the timing of hospitalization. nor in the timing of Remdesivir administration from symptoms onset. Remarkably, a higher proportion of pts with severe COVID-19 was observed in Group B (25% vs. 10%, p < 0.001). At univariate and multivariate analysis, rather than the timing of Remdesivir administration, age, presence of coexisting conditions, D-dimers, and O2 flow at admission correlated positively to progression to non-invasive ventilation, especially for patients in Group B. However, the rate of admission in the Intensive Care Unit and/or death was comparable in the two groups (7% vs. 4%). Negligible variations in serum GOT, GPT, GGT, and eGFR levels were detected. A mean reduction in heart rate was noticed within the first three days of antiviral treatment (p < 0.001). Low rate of ICU admission, high rate of clinical recovery, and good drug safety were observed in COVID-19 patients treated with Remdesivir during two diverse pandemic waves.