NUR 426 Lecture Notes - Lecture 3: Antianginal, Catecholamine, Aspirin
Document Summary
Antianginal, antiarrhythmic and antilipemic: right coronary artery feeds the right side and inferior wall. Left anterior descending feeds the whole front of the heart: right coronary artery, left coronary artery, circumflex, right coronary artery feeds the inferior and posterior wall (rip, circumflex feeds the lateral wall and posterior wall. Lad (left anterior descending) feeds the left anterior wall and septum. Cardiac conduction system: sa node -> bachman -> av node -> bundle of his -> bundle branches -> purkinje fibers (contraction) Heart rate x stroke volume = cardiac output (volume of blood the heart pumps out) Contractility = did the heart muscle contract and relax. Inotropic contractility (force of contraction: chronotropic either positive or negative (effects rate, dromotropi conduction (electrical) Risk factors for cad: cannot be changed. Angina types: classic (stable) predictable stress or exertion, unstable (preinfaraction) progressive severity unrelated to activity, unpredictable regarding stress/exertion and intensity.
