98 Bilder zum Thema "qrs wave" bei ClipDealer

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Male, 60 years old, clinically diagnosed as acute extensive anterior wall myocardial infarction. The patient died of ventricular fibrillation after admission.
Bidirectional ventricular tachycardia is a kind of malignant arrhythmia. The polarity of QRS main wave alternates from beat to beat, and it is easy to degenerate into ventricular fibrillation.
During left posterior fascicular block, the ECG showed right axis deviation. The QRS wave in leads I and aVL was rS wave, and the duration of QRS wave was less than 120 ms.
The illustration shows the two patterns of ventricular tachycardia episodes.The green circle represents sinus rhythm. Picture A shows paroxysmal episodes of ventricular tachycardia, and picture B shows short bursts.
In acute myocardial ischemia, the amplitude of T wave is increased first, and then the ST segment is elevated. When the end of QRS wave is deformed, there is a lack of collateral circulation.
Male, 60 years old, clinically diagnosed as acute extensive anterior wall myocardial infarction. The patient died of ventricular fibrillation after admission.
Torsade de pointes refers to the pleomorphic ventricular tachycardia that occurs in the background of long QT interval, and the polarity of QRS wave twists around the equipotential line.
The QT interval of ECG is from the beginning of QRS wave to the end of T wave, representing the total time of ventricular depolarization and repolarization.
Sometimes, because the QRS axis is in the upper left quadrant, the high-amplitude R wave of left ventricular hypertrophy occurs in the limb leads, and left chest leads is normal.
A 36 year old man survived CPR after sudden syncope. The electrocardiogram was suggestive of Brugada syndrome type 1. Implantation of ICD therapy.
During the onset of variant angina pectoris, ECG is divided into non fusion wave, partial fusion wave and complete fusion wave according to the fusion degree of QRS wave, ST segment and T wave.
In case of acute anterior myocardial infarction, the characteristics of ST segment elevation in ECG can be used to deduce whether the culprit vessel system is the left main trunk or the proximal LAD.
R wave greater than S wave is judged to be positive; R smaller than S is judged to be negative; R equal to S amplitude is judged to be equipotential.
Female, 51 years old, diagnosed with mitral stenosis. When this ECG was taken, the patient still maintained sinus rhythm.Note that the P wave duration was widened.
At present, there is a younger trend in patients with acute myocardial infarction, so it is important to check the ECG for acute chest pain in young people.
In complete left bundle branch block, the conduction of the LBB can be completely interrupted or can still be conducted, but it is delayed by at least 45ms than the RBB.
Coronary artery spasm causes transmural myocardial ischemia, and ST segment elevation in ECG has localization characteristics. Criminal vessels can be derived from ST segment elevation leads in ECG.
A patient with AIMI presents with a sudden widening of the QRS complex in the junctional escape rhythm, premature ventricular contractions, resulting in polymorphic ventricular tachycardia.
When ectopic impulses from the anterior wall of the right atrium produce a completely negative P wave in lead V1, the posterior wall ectopic impulse produces a positive and negative biphasic P wave.
Atrial focal originating in the left upper pulmonary vein, with an upright P wave in V1 and wide duration, inverted P wave in lead aVL and an upright P wave with notch in inferior leads.
The standard for diagnosing right atrial abnormality in ECG is that the amplitude of P-wave in limb leadsI is greater than 2.5mm, and the amplitude of upright P-wave in chest leads is 1.5mm.
When the duration of a ventricular tachycardia attack exceeds 30 seconds or is less than 30 seconds accompanied by circulatory instability, it is called persistent ventricular tachycardia.
A 4-year-old boy with a clinical diagnosis of long QT syndrome. No genetic testing was done during hospitalization. The child died suddenly during follow-up.
The typical ST-T changing of left ventricular hypertrophy are: ST segment slightly convex with downward sloping depression; fusion of ST segment and inverted T wave; asymmetry of inverted T wave.
Male, 65 years old, was clinically diagnosed with acute anterior myocardial infarction. The patient was treated with a coronary stent, but no reperfusion T wave occurred on day 2.
Third degree atrioventricular block in young women may be congenital, with the block located on the atrioventricular node or above bifurcation of the His bundle.
When the rhythm of the atria originates in the lower part of the atria, the whole atria are excited from inferior to superior, producing negative P waves in the inferior leads.
Male, 84 years old, admitted to hospital with chest pain for 1 day. These ECG rhythms are the Holter monitor records of the patients after admission, and they are third degree atrioventricular block.
Third degree atrioventricular block in young women may be congenital, with the block located on the atrioventricular node or above bifurcation of the His bundle.
In acute left main occlusion, the left ventricular myocardium is massively ischemic and necrotic, the excitatory potential of the left ventricle is weakened, and the axis may deviate to the right .
Third degree atrioventricular block in young women may be congenital, with the block located on the atrioventricular node or above bifurcation of the His bundle.
Male, 71 years old, was clinically diagnosed with upper gastrointestinal bleeding. During sleep at night, ECG monitoring showed sinus bradycardia, blood pressure 115 and 70mmHg.
Children and young adults, especially young women, have a physiological inversion of the T wave in the right chest lead. Do not misdiagnose it as acute pulmonary embolism.
In patients with emphysema, the anatomical position of the heart is more vertical, the depolarization potential of the right atrium from top to bottom increases, and the P wave of the ECG increases.
Third degree atrioventricular block in young women may be congenital, with the block located on the atrioventricular node or above bifurcation of the His bundle.
The atrioventricular junction area includes the lower part of the atrium, atrioventricular node, and His bundle, and is a necessary pathway for electrical impulses to travel from the atrium to the ventricle.
Abnormal ECG refers to changes in depolarization waves and or repolarization waves, most of which are pathologic and few are physiological.
Male, 52 years old, diagnosed with acute extensive anterior wall myocardial infarction. The patient repeatedly experienced ventricular tachycardia and eventually died of cardiogenic shock.
When the rhythm of the atria originates in the lower part of the atria, the whole atria are excited from inferior to superior, producing negative P waves in the inferior leads.
When ectopic impulses from the anterior wall of the right atrium produce a completely negative P wave in lead V1, the posterior wall ectopic impulse produces a positive and negative biphasic P wave.
In ST segment elevation myocardial infarction, the ST-T of ECG will undergo a characteristic evolution process, and finally appear pathological Q wave, sometimes lasting for a lifetime.
After acute myocardial infarction, there is a high incidence of ventricular tachycardia within 2 weeks. Ventricular tachycardia is a common arrhythmia in patients with myocardial infarction.
When ectopic focal areas in the atria are located in the atrial septum, the left atrium and right atrium can be excited at the same time, producing a very narrow P wave.
When the ECG is too complex, the recording quality is poor, or it is impossible to interpret what is causing the loss of the ECG, the ECG machine will not be able to provide a diagnostic reference.
According to the offset amplitude of the ST segment at J point and J60 point, ST segment elevation can be divided into three basic types: concave upward, oblique straight and concave downward type.
The autonomic frequency of the sinoatrial node is the fastest, and other secondary pacemakers are controlled through mechanisms of preemptive occupation and overspeed suppression.
The conduction system of the heart is responsible for the generation and conduction of cardiac electrical impulses, and is the electrical system of the heart.
Male, 13 years old, clinically diagnosed with secundum atrial septal defect. Note that the QRS wave in lead V1 of the electrocardiogram has a qR shape, indicating right ventricular hypertrophy.
Third degree atrioventricular block in young women may be congenital, with the block located on the atrioventricular node or above bifurcation of the His bundle.
Sometimes, there may be slight non-specific changes and normal variations in the electrocardiogram, which are often due to physiological reasons and have no clinical therapeutic significance.

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