LEC16&17 - Interdisciplinary School of Health...

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Unformatted text preview: Interdisciplinary School of Health Sciences Faculty of Health Sciences University of Ottawa HSS 2101 B Health Problems (3 credits) Professor: Dr. Karen Phillips Office Hours: Templeton Room 215, Tuesdays 1:00-2:20pm After end of classes office hours will be moved to different date. Date Topic Tuesday, March 1 14. Diseases/Disorders of the Gastrointestinal Tract Chapter 9 Friday, March 4 15. Cardiovascular Disease I Chapter 6 Tuesday, March 8 16. Cardiovascular Disease II Chapter 7 Friday, March 11 17. Respiratory Disease Chapter 8 Tuesday, March 15 18. Pathology of the Reproductive System- Chapter 11 (Assignment Due 5%) Friday, March 18 19. Diseases Associated with Pregnancy Chapter 12 Tuesday, March 22 20. Renal Pathology Chapter 10 CLASS EVAL. Friday, March 25 21. Diabetes Chapter 12 Tuesday, March 29 22. Diseases of the Endocrine System Chapter 12 Friday, April 1 23. Pathology of the Nervous System I Chapter 13 Tuesday, April 5 24. Pathology of the Nervous System II Chapter 13 Friday, April 8 REVIEW Final Exam Lectures 14-24; 45% Vascular System • Arterial pressure • Capillary pressure • Venous pressure • Blood pressure (BP): created by pumping action of heart; in arteries, BP rises during ventricular systole and falls during ventricular Factors That Affect BP • Cardiac output Cardiac output : volume of blood pumped per minute (determined by heart rate and stroke volume stroke volume —amount of blood pumped by ventricle in one contraction) • Peripheral resistance Peripheral resistance : friction in arteries as blood flows through • Blood volume Blood volume : amount of blood in vascular system Hypertension= High Blood Pressure Systolic blood pressure is consistently over 140 (systolic is the "top" number; represents the pressure generated when the heart beats) Diastolic blood pressure is consistently over 90 (diastolic is the "bottom" number; represents the pressure in the vessels when the heart is at rest) Hypertension= High Blood Pressure Hypertension • Primary: 90% of cases • Hypertensive crisis Hypertensive crisis : severe elevation • Major cause of MI Hypertension: Excessive vasoconstriction of small arterioles throughout body- this raises diastolic pressure causes heart to pump more forcefully (increased force of ventricular contractions) Severe hypertension - effects on heart, blood vessels and kidney Hypertensive Heart Disease Cardiac effects- enlarged heart may function effectively for years cardiac failure Vascular effects- hypertension accelerates development of atherosclerosis in larger arteries, cerebral hemorrhage complication of severe hypertension Renal effects- narrowing of renal arterioles decreases blood supply to kidney renal failure Hypertensive Heart Disease Primary Myocardial Disease Small number of patients heart disease does not result from valvular, coronary disease or hypertension but from primary disease of the heart muscle Two major types: 1. myocarditis 2. cardiomyopathy Primary Myocardial Disease •...
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LEC16&17 - Interdisciplinary School of Health...

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