Ratexstrvol vol vol at each beat pumped

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Unformatted text preview: PATHOPHYSIOLOGY * “THE LAW OF THE HEART” - Most rapid pacemaker controls heart *CARDIAC OUTPUT = H.RATE X STR.VOL vol Vol at each beat pumped * IMPAIRED DIASTOLIC FILLING Ventricular rate 250 beats/min filling ventricles impaired, catastrophic fall blood outflow HR ↑ ↓diastole SYMPTOMS SYMPTOMS * PALPITATIONS * SYNCOPE Aware rapid heartbeat fainting * DIZZINESS * CHEST PAIN *DYSPNOEA Difficulty breathing - ↑ in ventricle filling, press rise in no time, pulmonary circuit empty in tachycardia PHYSICAL SIGNS…1 PHYSICAL *PULSE …. FAST > 150/min IRREGULAR SLOW < 50/min *JUGULAR VENOUS PULSE “coordinated manner; time atria + ventricle contract together since Cannon Waves” Atria 1 + ventricle 2 in st nd ventricle stronger atria can’t open AV opening backflow cannon wave aka ATRIOVENTRICULAR DISASSOCIATION PHYSICAL SIGNS … 2 PHYSICAL SIGNS … 2 AUSCULTATION 1st heart sound variable by closing mitral + tricuspid valve variation in intensity of sound if not contract in coordinated manner; vary beat to beat – same physiology as cannon wave VARIABLE S1 2nd sound fr semilunar + aortic valves...
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