专题讲座(心电图谱（Lecture lecture (ECG chart)）.docVIP

专题讲座(心电图谱（Lecture lecture (ECG chart)） Forum membership level: Intermediate Academic level: Part-time Posted: 807 experience: 1526 flowers: 1 Medal: 0 offline user information for friends and Short Message published: 2007-01-15 08:21:00 only normal ECG the landlord Sinus rhythm Heart rate: 70 beats per minute PR interval: 0.16 seconds QT interval: 0.33 seconds P I II =????: aVR QRS time: 0.10 seconds ST-T no abnormal migration Premature atrial contraction (APB) The ECG characteristics. 1, the early appearance of P - QRS-T wave group Ectopic P wave and sinus P wave 2, the real difference 3, P R interval is more than 0.12S 4, including two beats, sinus P wave interval shorter than Two times of sinus P R interval, called incomplete compensation intermission Before the period of contraction (PVCs) The ECG characteristics. 1, the early emergence of wide QRS wave group, the time limit of 0.12S, The non P wave, S-T segment and T wave and secondary main wave in the opposite direction. 2, the coupling interval constant 3, completely compensatory interval 4, room early can be isolated or regular, formed two joint law (on the left), trigeminy, pair ventricular premature (left). 5, in the same lead if different forms of room for early Shaped or multifocal ventricular early. Figure A sinus tachycardia The ECG characteristics. 1, the frequency of 100 times per minute. 2, the other wave type value in the normal range. Figure B for sinus bradycardia The ECG characteristics. 1, the frequency of 60 times / min. 2, the other wave type value in the normal range. Paroxysmal supraventricular tachycardia In real and unable to determine the junction tachycardia when referred to as speed. A rapid series of neat QRS wave group (160 ~ 220 / min), QRS wave time, normal morphology, such as with intraventricular block and preexcitation The difference is QRS or intraventricular conduction, broadening deformation, and identification of ventricular tachycardia. The ECG characteristics. 1, ventricul