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PROBLEM 2: Abdominal aorta aneurysm repair can involve the deployment of an endovascular stent grafts as depicted in the adjacent figure. The graft is a bifurcating fabric tube supported by a metal mesh that is designed to help prevent the aneurysm from rupturing. It is held in place by hooks that penetrate into the surrounding tissue. The inlet diameter of the graft is 2 cm and the outlet diameters are each 1.7 cm. The inlet blood pressure is 95 mm Hg and the inlet flow rate of blood is 70 mL/sec. The outlet blood pressure is 90 mm Hg and the outlet flow rate of blood is equal for both iliac arteries. If each branch of the stent makes an angle of 45 degrees with the vertical, calculate the vertical force that the hooks exert on the tissue to remain in place. Neglect the effects of gravity and friction between the graft and the surrounding tissue. Assume that the flow is steady (i.e., ignore pulsing) and that the velocity profile at the inlets and outlets is uniform across the area. The density of blood is 1.05 g/cm³. Heart Endovascular aneurysm repair (EVAR), abdominal aortic aneurysm (AAA) Guidewire. Aortic aneurysm Catheters Kidneys 中式 Stent-graft Stent-graft released Stent-graft in place from catheter

PROBLEM 2: Abdominal aorta aneurysm repair can involve the deployment of an endovascular stent grafts as depicted in the adjacent figure. The graft is a bifurcating fabric tube supported by a metal mesh that is designed to help prevent the aneurysm from rupturing. It is held in place by hooks that penetrate into the surrounding tissue. The inlet diameter of the graft is 2 cm and the outlet diameters are each 1.7 cm. The inlet blood pressure is 95 mm Hg and the inlet flow rate of blood is 70 mL/sec. The outlet blood pressure is 90 mm Hg and the outlet flow rate of blood is equal for both iliac arteries. If each branch of the stent makes an angle of 45 degrees with the vertical, calculate the vertical force that the hooks exert on the tissue to remain in place. Neglect the effects of gravity and friction between the graft and the surrounding tissue. Assume that the flow is steady (i.e., ignore pulsing) and that the velocity profile at the inlets and outlets is uniform across the area. The density of blood is 1.05 g/cm³. Heart Endovascular aneurysm repair (EVAR), abdominal aortic aneurysm (AAA) Guidewire. Aortic aneurysm Catheters Kidneys 中式 Stent-graft Stent-graft released Stent-graft in place from catheter

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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PROBLEM 2: Abdominal aorta aneurysm repair can involve the deployment of an endovascular stent grafts as depicted in the adjacent figure. The graft is a bifurcating fabric tube supported by a metal mesh that is designed to help prevent the aneurysm from rupturing. It is held in place by hooks that penetrate into the surrounding tissue. The inlet diameter of the graft is 2 cm and the outlet diameters are each 1.7 cm. The inlet blood pressure is 95 mm Hg and the inlet flow rate of blood is 70 mL/sec. The outlet blood pressure is 90 mm Hg and the outlet flow rate of blood is equal for both iliac arteries. If each branch of the stent makes an angle of 45 degrees with the vertical, calculate the vertical force that the hooks exert on the tissue to remain in place. Neglect the effects of gravity and friction between the graft and the surrounding tissue. Assume that the flow is steady (i.e., ignore pulsing) and that the velocity profile at the inlets and outlets is uniform across the area. The density of blood is 1.05 g/cm³ Heart Endovascular aneurysm repair (EVAR), abdominal aortic aneurysm (AAA) Guidewire Aortic aneurysm Catheters Kidneys Stent-graft Stent-graft released from catheter Stent-graft in place 4
Transcribed Image Text:PROBLEM 2: Abdominal aorta aneurysm repair can involve the deployment of an endovascular stent grafts as depicted in the adjacent figure. The graft is a bifurcating fabric tube supported by a metal mesh that is designed to help prevent the aneurysm from rupturing. It is held in place by hooks that penetrate into the surrounding tissue. The inlet diameter of the graft is 2 cm and the outlet diameters are each 1.7 cm. The inlet blood pressure is 95 mm Hg and the inlet flow rate of blood is 70 mL/sec. The outlet blood pressure is 90 mm Hg and the outlet flow rate of blood is equal for both iliac arteries. If each branch of the stent makes an angle of 45 degrees with the vertical, calculate the vertical force that the hooks exert on the tissue to remain in place. Neglect the effects of gravity and friction between the graft and the surrounding tissue. Assume that the flow is steady (i.e., ignore pulsing) and that the velocity profile at the inlets and outlets is uniform across the area. The density of blood is 1.05 g/cm³ Heart Endovascular aneurysm repair (EVAR), abdominal aortic aneurysm (AAA) Guidewire Aortic aneurysm Catheters Kidneys Stent-graft Stent-graft released from catheter Stent-graft in place 4
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