心电图诊断步骤（ECG diagnostic procedure）.docVIP

心电图诊断步骤（ECG diagnostic procedure） Main normal values of ECG and analysis procedures 1. heart rhythm: (1) determine the dominant rhythm: sinus or ectopic; (2) the most basic condition of sinus rhythm is PV5, V6 erect and avR inversion; (3) normal sinus heart rate is 60 ~ 100 times / min. 2. heart rate: (1) the rate of atrial or ventricular rate = 60/P-P interval (BPM) or 60/R-R interval (BPM). (2) the number of the large number of visual roughly: 1 of the 2 big 300pbm; 150bpm; 3 big 100bpm; 4 big 75bpm; 5 of the 6 big 60bpm; 50bpm; 7 big 43bpm. (3) calculate the mean heart rate during sinus arrhythmia or atrial fibrillation. In general, the number of P or QRS waves multiplied by 6 seconds is 10. 3. ECG axis: normal - 30 degrees ~ + 90 degrees 4. P wave (1) morphology; normal round obtuse; (2) voltage; normal limb conduction --0.03ms. 5. P-R interval: normal 0.12 - 0.20s 6. QRS wave group: (1) QRS time: normal 0.06 - 0.10s; (2) QRS voltage: main analysis of V1 and V2, normal for: RV11. (5) RV5+SV1RV1+SV5R/10. Abnormal T wave is low and flat, two-way or inverted. 9. Q T interval: related to heart rate, normal values should be adjusted according to the corresponding heart rate. 10. U wave: V2. V3 clear, U and T in the same direction. U0.12s; (3) compensatory pause is incomplete. 2. diagnostic points of typical ventricular premature beat: (1) large malformation QRS - T occurs in advance; (2) there is no related P wave before; (3) compensatory pause is more complete 3. typical diagnostic points of junctional premature beat: (1). QRS wave or inverse P premature ventricular wave (P -), P (2) - -R0.12 seconds to complete, SII. Nei 3.I, aVL were qR or qRs or Rs, RavlRIRavR Atrioventricular hypertrophy 1. right atrium large (lung type P wave) diagnostic points: P wave amplitude: limb conduction 0.25mV, chest conduction 0.20mV. 2. left atrium large (mitral valve type P wave) diagnostic key points: P wave time, 0.11s, presented in Shuangfeng, Ptfv1, -0.04mm.s. 3. right ventricul