Ventricular Septal Defect ( Vsd )

969 WordsJan 21, 20154 Pages
Ventricular septal defect (VSD) Definition A ventricular septal defect (VSD) is one of the most common congenital heart defects. During fetus development, a gap occurs in the heart’s lower wall between two ventricular chambers and allows blood to pass through from the left to the right side of the heart. The blood rich with oxygen, pumped back to the lungs instead of out to the body and cause the heart to work harder than usual. Pathophysiology Ventricular septal defect cause the blood flow move from high pressure, left ventricle, into the right ventricle, which has lower pressure. Oxygenated blood instead of going to the systemic circulation enters into the left ventricle and goes into the pulmonary artery and to the lungs. As the result return of the blood from the lungs to the left atrium and eventually into the left ventricle, will increase and cause dilation and hypertrophy of the chambers, increases end-diastolic pressure, and raise the pulmonary venous pressure. By increasing the pulmonary blood flow, the pulmonary capillary pressure also rises and that can increase the interstitial fluid in the lungs, and cause pulmonary edema. Finally, as blood goes through the gap, from the LV to the RV, away from the aorta, case the cardiac output to drop, Incidence According to the centers for disease control and prevention, congenital heart defects (CHDs) are the most common types of birth defect among children. Today CHD, mostly VSD, affect about 1% of every 40,000 babies
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