Basic Dysrhythmia Course Exam 100% Accurate!!

SA node - ANSWERthe major pacemaker of the heart 60-100 - ANSWERinherent rate of the SA node 40-60 - ANSWERinherent rate of the AV node 20-40 - ANSWERinherent rate of the ventricles (purkinjie fibers) systole - ANSWERphase of contraction diastole - ANSWERphase of relaxation p wave - ANSWERwhat does atrial depolarization show on the ECG? QRS complex - ANSWERwhat does ventricle depolarization show on the ECG? T wave - ANSWERwhat does repolarization show on the ECG? increase - ANSWERwhat does sympathetic stimulation do to the heart rate? decrease - ANSWERwhat does parasympathetic stimulation do to the heart rate? absolute refractory period - ANSWERthe period immediately following the firing of a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied relative refractory period - ANSWERduring the ventricular cardiac cycle when all cardiac cells are not fully repolarized and a strong enough stimulus can excite cardiac tissue and initiate arrhythmias last half of t wave - ANSWERWhen is the relative refractory period of the ventricles? .20 secs - ANSWERhow much time is one large box in an ecg strip? .04 secs - ANSWERhow much time is one small box in an ecg strip? 0.12-0.20 - ANSWERnormal range of PR interval 0.04-0.12 - ANSWERnormal range of QRS complex less than 1/2 the preceding R-R interval - ANSWERwhat is the normal time of the QT? p to p - ANSWERhow do you measure the atrial rate? R to R -