Right Ventricular Failure Class Notes PDF

NURS 7053 Advanced Pathophysiology I Alterations of Cardiovascular Function IV - Class Notes Right Ventricular Failure Refers to primary dysfunction of the right ventricle (RV) Etiologies and Pathophysiology Right Ventricular Myocardial I...

NURS 7053 Advanced Pathophysiology I Alterations of Cardiovascular Function IV - Class Notes Right Ventricular Failure Refers to primary dysfunction of the right ventricle (RV) Etiologies and Pathophysiology Right Ventricular Myocardial Ischemia or Infarct Left Ventricular Failure Increased left ventricular and atrial pressures are reflected back into pulmonary circulation Leads to increased pulmonary vascular resistance (PVR) and pulmonary artery pressures RV hypertrophy leads to RV dysfunction (see patho of LVF due to HTN) 1  NURS 7053 Advanced Pathophysiology I Alterations of Cardiovascular Function IV - Class Notes Primary Pulmonary Hypertension (PPH)/Pulmonary Arterial Hypertension (PAH) PPH is caused by vasoconstriction due to endothelial dysregulation and/or fibrosis of the pulmonary arteries. Causes/etiologies are unknown. Hypertrophy of smooth muscle in vessel walls causes increased PVR, which leads to RV hypertrophy Pulmonary Vasculature Obstruction Causes include pulmonary thromboembolism or thrombi Usually a cause of acute RVF because the massive increase in RV afterload causes RV dilation and ‘failure’ 2  NURS 7053 Advanced Pathophysiology I Alterations of Cardiovascular Function IV - Class Notes Hypoxic Pulmonary Hypertension due to Chronic Pulmonary Disease Common cause of death in patients with chronic or severe acute respiratory disease 3  NURS 7053 Advanced Pathophysiology I Alterations of Cardiovascular Function IV - Class Notes Clinical Consequences Elevated central venous pressure, jugular venous distention Dependent pitting edema with weight gain 4  NURS 7053 Advanced Pathophysiology I Alterations of Cardiovascular Function IV - Class Notes Hepatosplenomegaly Consequences of decreased CO from LV 5