ABSTRACT
A 37-year-old female patient was admitted 16 days after delivery in a hospital for infectious diseases with cough, shortness of breath, and infiltrative changes in the lungs that were interpreted as viral pneumonia. Considering the failure of therapy and the history, peripartum cardiomyopathy was suspected. Examination revealed a decrease in left ventricular ejection fraction to 30â%, ultrasonic signs of lung congestion and bilateral hydrothorax. The patient was diagnosed with peripartum cardiomyopathy accompanied by functional class 4 heart failure. A specific feature of this case was fast positive dynamics with complete regression of the clinical picture of congestion and improvement of the left ventricular myocardial function associated with the treatment.
Subject(s)
COVID-19 , Cardiomyopathies , Pregnancy Complications, Cardiovascular , Puerperal Disorders , Female , Humans , Adult , Pregnancy , Stroke Volume , Ventricular Function, Left , Peripartum Period , COVID-19/complications , COVID-19/diagnosis , Cardiomyopathies/complications , Cardiomyopathies/diagnosis , Puerperal Disorders/diagnosis , Puerperal Disorders/etiology , Lung , Diagnostic Errors , Pregnancy Complications, Cardiovascular/diagnosis , Pregnancy Complications, Cardiovascular/therapyABSTRACT
Background. Prediction of the new coronavirus infection (COVID-19) spread is important to take timely measures and initiate systemic preventive and anti-epidemic actions both at the regional and state levels to reduce morbidity and mortality. Objective: to develop a model for short-term forecasting of COVID-19 cases and deaths in the Russian Federation. Material and methods. The data for the model training were collected from the Stopcoronavirus.rf and Johns Hopkins University portals. It included 13 features to assess the infection dynamics and mortality, as well as the rate of morbidity and mortality in different countries and certain regions of the Russian Federation. The model was trained by the CatBoost gradient boosting method and retrained daily with updated data. Results. The forecast model of COVID-19 cases and deaths for the period of up to 14 days was created. The mean absolute percentage error (MAPE) estimate of the model's accuracy ranged from 2.3% to 24% for 85 regions of the Russian Federation. The advantage of the CatBoost machine learning method over linear regression was shown using the example of the root mean square error (RMSE) value. The model showed less error for regions with a large population than for less populated ones. Conclusion. The model can be used not only to predict the pandemic of the novel coronavirus infection but also to control and assess the spread of diseases from the group of new infections at their emergence, peak incidence, and stabilization period.