NURS 488 Lecture Notes - Lecture 2: Orthopnea, Atrioventricular Septal Defect, Fibrin
22 Sep 2017
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Document Summary
Lewis, s. l. , ruff dirksen, s. , heitkemper, m. m. , bucher, l. , & camera, i. m. (2014). Surgical nursing in canada: assessment and management of clinical problems (3rd cdn. ed. Lilley l. l. , collins, s. r. , & snyder, j. s. , swart, b. (2016). Pharmacology for canadian health care practice. (3rd cdn. ed. ). Dysrhythmia: any deviation from the normal rhythm of the heart. Arrhythmia: meaning without rhythm- implies asystole= no heartbeat. Sodium-potassium adenosine triphosphatase (atpase) pump: maintains the polarized distribution of extracellular sodium and calcium ions and intracellular potassium, chloride (cl-) and bicarbonate (hco3-) ions. Interval from phase 0-4: action potential duration (adp) Interval from phase 0-midway through phase 3: absolute or effective refractory period (erp) cannot be stimulated to depolarize again in this period. Remainder of phase 3-phase 4: relative refractory period (rrp) can be stimulated to depolarize by a powerful action enough impulse (such as drug therapy) Automaticity: normal in the sa node but causes dysrhythmias in other places.
