ABSTRACT
UNLABELLED: The aim of the study---a comprehensive assessment of haemodynamic alterations during pneumonectomy using pulmonary arterial volumeter (PAV) opportunities. MATERIALS AND METHODS: 72 patients were included in the study, (the average age - 51 +/- 3,8 years, body weight - 68 +/- 7 kg), who underwent pneumonectomy about lung tumors under general anesthesia with separate ventilation (on indications - jet high-frequency ventilaton).
Subject(s)
Lung Neoplasms/surgery , Pneumonectomy , Ventricular Dysfunction, Right/etiology , Ventricular Function, Right/physiology , Anesthesia, General , Blood Volume/physiology , Female , High-Frequency Jet Ventilation , Humans , Lung/blood supply , Lung/surgery , Lung Neoplasms/physiopathology , Male , Middle Aged , Pneumonectomy/adverse effects , Pneumonectomy/methods , Pulmonary Artery/physiology , Treatment OutcomeABSTRACT
Latent dysfunction of the heart right ventricle and hypovolemia were assessed in 50 patients divided into 4 groups, operated on the heart, abdominal aorta and lungs. It was found that after revascularization of the myocardium the diastolic disorders prevailed. In patients operated for the heart valve (mitral and aortal) diseases prevailing were the systolic and pump dysfunction of the right ventricle. Insufficiency of the right ventricle in these groups was 13% and 22% respectively. After operations on the abdominal aorta a combination of the systolic and diastolic impairments of the right ventricle were observed. After extended resections of the lungs there was a characteristic combination of systolic, diastolic and pump dysfunctions. When the operation was followed by a decreased minute volume of circulation, its cause was hypovolemia in 29% of cases in the examined surgical patients. The investigation of the right ventricle functions with the help of pulmonary arterial volumetry can reveal their latent dysfunctions as well as hypovolemia in a considerable part of surgical patients.
Subject(s)
Anesthesia/methods , Critical Care/methods , Postoperative Care , Ventricular Dysfunction, Right/diagnosis , Ventricular Dysfunction, Right/prevention & control , Aortic Valve Insufficiency/surgery , Blood Pressure/physiology , Cardiac Catheterization/methods , Echocardiography , Female , Hemodynamics/physiology , Humans , Hypertension, Pulmonary/physiopathology , Male , Middle Aged , Mitral Valve Insufficiency/surgeryABSTRACT
The possibility of using the thermodilution technique for diagnosis of pulmonary oedema was studied in theoretical model of thermodilution between intra- and extravascular fluid spaces of pulmonary tissue as well as in acute experiments on anesthetized and immobilized dogs with hydrostatic pulmonary oedema. The intensity of thermoindicator diffusion at the "left atrium--aorta" stretch was found to depend on the degree of oedema. The following equation is suggested for calculating the pulmonary extravascular fluid volume: Vev = tev (Qao--Qpa). The thermodilution technique may be used as an independent method for diagnosis of pulmonary oedema.
