Mathematical Study of Blood Flow in the Real Model of the Right Coronary Artery - Bypass Graft System
نویسندگان
چکیده
In this paper, we study the blood flow in the real model of the right coronary artery -bypass graft system under the real pulsatile condition. The human blood is assumed as an incompressible Non-Newtonian fluid and its flow is modeled by the unsteady state Navier-Stokes equations and the continuity equation. The effect of the existence and intensity of a stenosis in the right coronary artery on the blood flow behaviour is investigated. Numerical simulations are also undertaken to analyse the influence of the bifurcation angle of the bypass graft on blood pressure, velocity distribution and wall shear rate.
منابع مشابه
The factors that affect blood and blood products usage in coronary artery graft surgery
Background: Coronary artery bypass surgery is one of the surgeries in which high blood transfusions are needed. About 20% of all surgical operations require a blood transfusion. Packed cell administration increases perioperative morbidity and mortality. In the United States, from every 1000 people, one has undergone a coronary artery bypass graft surgery, and it is estimated that around 800,000...
متن کاملComparison of the Graft Angles Effects on the Temporal Wall Shear Stress Gradients in the Aorto-Coronary and Coronary-Coronary Bypasses
In this theoretical study, the effect of various types of bypass graft angles on the flow field, has been investigated specially on the temporal Wall Shear Stress (WSS) on the toe, heel and some locations on the bed of the Left Anterior Descending (LAD) artery at the anastomoses areas in the Aorto-Coronary (AC) and Coronary-Coronary (CC) bypasses. Flow fields in both bypasses with angles of...
متن کاملCorrelation between Coronary Artery Bypass Graft Surgery and Hearing Threshold Changes
Introduction: Sensorineural hearing loss (SNHL) is a probable complication of coronary artery bypass graft (CABG) Surgery, that may be due to embolism, perfusion failure and consumption of ototoxic drugs. Since the incidence of SNHL after CABG is different according to the various reports, the present study was designed to study hearing threshold change after CABG surgery. Method: In this cross...
متن کاملOff-Pump Versus On-Pump Coronary Artery Bypass Graft Surgery, prospective cohort study
Introduction: Coronary artery bypass grafting is a surgical operation that bypasses atherosclerotic coronary vessels and restores blood flow to the ischemic zone of hearts. And two different conventional methods are ON-pump CABG, and Off-pump CABG. Altogether, the efficacy and safety of these two types of surgical procedures are still under debate. In this study, we aim to com...
متن کاملThe effect of eight weeks of cardiac rehabilitation on hemodynamic parameters and blood lipid profile in male patients 55-70 years old CABG coronary artery bypass graft surgery
Extended Abstract 1.Introduction According to the World Health Organization (2010), cardiovascular disease (CHD) is the most common cause of death worldwide (1). Sadeghpour et al. (2010) have shown that one of the most common problems after coronary artery bypass grafting is extensive hemodynamic changes. Incomplete drainage of blood and blood fluid from the pericardium and pleura reduces hea...
متن کامل