Blood Pressure: Measure of force of blood in arterial wall Normal blood pressure Sphygmomanometer The Heartbeat: Blood Pressure SYSTOLIC pressure DIASTOLIC pressure 120 80
Heart disorders <ul><li>Arrhythmia: Heart beats irregularly </li></ul><ul><li>Arises from problems with the electrical activity of the heart </li></ul><ul><li>Treatment may include implanting an artificial pacemaker or small defibrillator </li></ul>
Heart disorders Ventricular fibrillation: Uncoordinated contraction of ventricles. This form of severe arrhythmia can be fatal, and is commonly identified in cardiac arrest patients.
Heart disorders Heart murmurs: The heart makes extra sounds due to narrowing or leaking valves, or abnormal passages for blood flowing into or near the heart.
Heart disorders Hypertension: High blood pressure ( 140/90 or higher ). Prolonged high blood pressure damages the heart and blood vessels . Heart must pump harder, and over time the heart muscles expand , causing them to weaken . They may also thicken . Artery walls may tear and speed up atherosclerosis due to vessel injury.
Heart disorders Congenital heart defect: Defect of the structure of the heart and vessels , present at birth . Example: A septal defect is a hole in the septum , which allows oxygenated and deoxygenated blood to mix. 9 out of 1000 people are born with congenital heart defects.
Heart disorders <ul><li>Heart failure: </li></ul><ul><li>The heart cannot pump blood efficiently because: </li></ul><ul><li>It cannot fill with enough blood </li></ul><ul><li>OR </li></ul><ul><li>2) Does not pump the blood with enough force </li></ul><ul><li>A heart transplant may be required. </li></ul>