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Your search keyword '"Chang, Qinghua"' showing total 6 results
Start Over Author "Chang, Qinghua" Topic bundle-branch block
6 results on '"Chang, Qinghua"'

1. An interesting electrocardiogram caused by lead reversal.

Author

Li C, Wang N, Chang Q, and Pan D

Subjects
Humans, Sinoatrial Node, Heart Atria, Atrioventricular Node, Electrocardiography, Bundle-Branch Block diagnosis
Abstract

Background: During normal sinus rhythm, atrial depolarization is conducted from right atrium to left atrium through Bachmann's bundle, and a normal P wave axis which is measured on the frontal plane is between 0º and + 75º. The change of P wave polarity is helpful for the analysis of origin point., Case Presentation: We report a patient with negative P wave in lead I. The characteristics of QRS complex in leads V 1 to V 6 are helpful to preliminarily differential diagnosis. The 12-lead electrocardiogram (ECG) with correct limb leads (right arm-left arm) placement shows sinus rhythm with complete right bundle branch block (RBBB)., Conclusions: The change of P wave polarity as well as characteristics of QRS complex can help identify limb-lead reversals., (© 2024. The Author(s).)

Published
2024
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3. Recurrent extensive anterior myocardial infarction with left and right bundle branch block.

Author

Jiang H, Chang Q, Zhang Y, and Liu R

Subjects
Bundle-Branch Block complications, Bundle-Branch Block physiopathology, Heart Failure diagnosis, Heart Failure etiology, Humans, Male, Middle Aged, Myocardial Infarction complications, Myocardial Infarction physiopathology, Prognosis, Recurrence, Severity of Illness Index, Bundle-Branch Block diagnostic imaging, Electrocardiography methods, Myocardial Infarction diagnostic imaging
Abstract

The diagnosis of myocardial infarction with left bundle branch block is difficult. We report a case of 56-year-old man with old extensive anterior myocardial infarction and left bundle branch block (masked each other). The recurrent myocardial infarction indicated right bundle branch block and first-degree atrioventricular block, making a clear diagnosis of complicated and interesting ECG., (© 2017 Wiley Periodicals, Inc.)

Published
2018
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4. True left bundle branch block?

Author

Chang Q and Liu R

Subjects
Bundle-Branch Block complications, Female, Humans, Middle Aged, Myocardial Infarction complications, Bundle-Branch Block diagnosis, Bundle-Branch Block physiopathology, Electrocardiography, Myocardial Infarction diagnosis, Myocardial Infarction physiopathology
Published
2016
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5. Wolff-Parkinson-White syndrome with bundle branch and fascicular block: The diagnostic clue of electrocardiogram.

Author

Wang G, Liu R, and Chang Q

Subjects
Accessory Atrioventricular Bundle diagnosis, Accessory Atrioventricular Bundle physiopathology, Adult, Atrial Fibrillation etiology, Atrial Fibrillation physiopathology, Atrial Fibrillation therapy, Diagnosis, Differential, Electric Countershock methods, Humans, Male, Bundle-Branch Block diagnosis, Bundle-Branch Block etiology, Catheter Ablation adverse effects, Catheter Ablation methods, Electrocardiography methods, Postoperative Complications diagnosis, Wolff-Parkinson-White Syndrome complications, Wolff-Parkinson-White Syndrome diagnosis, Wolff-Parkinson-White Syndrome physiopathology, Wolff-Parkinson-White Syndrome surgery
Published
2015
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