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PN Cardiac Disorders Exam..docx

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PN Cardiac Disorders Exam.

Resting potential of heart - ANS >> -60mV
C C C C C C C




Electrocardiogram (ECG) - ANS >> A recording of the electrical activity of the heart C C C C C C C C C C C C C




Systole - ANS >> Contraction phase of the heartbeat
C C C C C C C C




Diastole - ANS >> Relaxation phase of the heartbeat
C C C C C C C C




Lub/S1 - ANS >> First heart sound, marks ventricular contraction. Sound caused by atrioventricular
C C C C C C C C C C C C C


valves closing.
C C




Dub/S2 - ANS >> Second heart sound, marks start of ventricular filling. Sound caused by semilunar
C C C C C C C C C C C C C C C


valves closing.
C C




P wave - ANS >> Atrial depolarization
C C C C C C




T wave - ANS >> Ventricular repolarization
C C C C C C




PR interval - ANS >>
C C C C C




QRS complex - ANS >> ventricular depolarization and atrial repolarization
C C C C C C C C C




PR segment - ANS >> AV nodal delay
C C C C C C C




ST segment - ANS >> Ventricular contraction
C C C C C C




QT interval - ANS >> ventricular depolarization and repolarization
C C C C C C C C




Aortic valve - ANS >> The semilunar valve separating the aorta from the left ventricle that prevents
C C C C C C C C C C C C C C C C


blood from flowing back into the left ventricle
C C C C C C C C




Pulmonary valve - ANS >> Valve positioned between the right ventricle and the pulmonary artery that
C C C C C C C C C C C C C C C


prevents blood from flowing back into the right ventricle
C C C C C C C C C




Mitral valve - ANS >> Valve between the left atrium and the left ventricle; bicuspid valve
C C C C C C C C C C C C C C C




Tricuspid valve - ANS >> Valve between the right atrium and the right ventricle
C C C C C C C C C C C C C




Rheumatic Carditis - ANS >> The inflammatory cardiac manifestations of rheumatic fever in either the
C C C C C C C C C C C C C C


acute or later stage
C C C C




Infective endocarditis - ANS >> Inflammation of the inner layer of heart tissue as a result of an
C C C C C C C C C C C C C C C C C


Cinfectious microorganism C




Myocarditis - ANS >> An inflammation of the myocardium typically caused by a viral, bacterial, fungal,
C C C C C C C C C C C C C C C


or parasitic infection
C C C

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