Pulmonary heart disease, also called pulmonary heart disease, begins as a lung disease that gradually merges into heart failure and respiratory failure. In general, in patients with pulmonary heart disease and respiratory failure, blood gas analysis reveals a decrease in partial pressure of oxygen, a decrease in saturation, and an increase in the partial pressure of carbon dioxide, which are among the main diagnoses of respiratory failure. There may also be electrolyte disturbances, such as low sodium, low potassium, low calcium, high magnesium, and even signs of renal failure. If the partial pressure of oxygen is less than 60 mmHg and the partial pressure of carbon dioxide is more than 50 mmHg as known from the results of the blood gas analysis, a non-invasive ventilator or an invasive ventilator operation, tracheal intubation as well as ventilator-assisted respiration should be given in order to provide the patient with a certain amount of relief.