37 Bilder zum Thema "lead axis" bei ClipDealer

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In the conventional 12 lead ECG, the chest lead system represents the electrical activity in the transverse or horizontal plane, and there are 6 traditional leads.
Male, 23 years old, healthy. When the initial excitation potential of the ventricle deviates from a certain lead axis, a Q wave will be projected onto that lead, which is a physiological Q wave.
When sinus arrest occurs, the electrocardiogram will show a long P-P interval, which is not multiples of the basal sinus cycle, including physiological and pathological reasons.
Under normal circumstances, when the initial excitation potential of the ventricle is far away from a certain lead axis, a Q wave will be projected on that lead, which is a physiological Q wave.
When ectopic impulses originate in the left atrium, an upright P wave will be generated in V1 and an inverted P wave in lead aVL.
Two bullets
many size of high quality and precision linear ball bearing and guide way support of machine for industrial work on table
Close-up of the lead screw parts of the CNC machine.
many size of high quality and precision linear ball bearing and guide way support of machine for industrial work on table
Mechanical linear actuator from lead screw rod, motor shaft coupler and aluminium block
The spare parts of lead ball screw shaft for CNC machine. The hi-precision CNC parts manufacturing process by CNC lathe in the light blue scene.
Mechanical linear actuator for 3D printers and CNC machines
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.
lead screw parts of the CNC machine. The hi-precision part of CNC machine manufacturing process.
Close up scene the spare parts lead ball screw parts. The hi-precision mechanical part manufacturing concept.
When the R wave amplitude of lead V1 in adults exceeds 6mm and there are no organic heart disease or other disease electrocardiogram changes, it is a simple right ventricular high voltage.
In ventricular septal defects, left ventricular hypertrophy, biventricular hypertrophy, or right ventricular hypertrophy ECG may be present.
The spare parts of the lead ball screw for CNC milling machine.
The spare parts of the lead ball screw for CNC milling machine.
many size of high quality and precision linear ball bearing and guide way support of machine for industrial work on table
Patients with ventricular septal defects have left ventricular hypertrophy in the early stage and biventricular hypertrophy in the middle and late stages.
Negative direction of QRS main wave in aVL lead
In the first degree of atrioventricular block, the PR interval was prolonged by more than 200ms, and there was no QRS wave loss in ECG. The blocking site can occur anywhere in the conduction system.
Closeup scene the spare parts lead ball screw set in the light blue scene. The hi-precision CNC machine part manufacturing concept.
Closeup scene the spare parts lead ball screw set. The hi-precision CNC machine part manufacturing concept.
Female, 6 years old, clinically diagnosed with Tetralogy of Fallot. The electrocardiogram shows sinus rhythm, extreme right axis deviation, biatria abnormality, right ventricular hypertrophy, etc.
Simple left ventricular high voltage has no abnormalities such as left atrial abnormality, left axis deviation and ST-T change, but the amplitude of R wave in left chest lead is increased.
In the frontal lead system, the lead axes of the 6 limb leads form a hexaxial reference system, which is one of the important theories of electrocardiography.
Closeup scene the spare parts lead ball screw set. The hi-precision CNC machine part manufacturing concept.
lead screw parts of the CNC machine. The hi-precision part of CNC machine manufacturing process.
Ventricular high voltage refers to an increase in R-wave amplitude, which can be both a normal variation and an electrocardiographic indicator of ventricular hypertrophy.
lead screw of the CNC machine
Closeup scene the spare parts lead ball screw parts in the light blue scene. The hi-precision mechanical part manufacturing concept.
Closeup scene the spare parts lead ball screw set in the light blue scene. The hi-precision CNC machine part manufacturing concept.
When the frontal QRS axis is at +57, the QRS amplitude of lead is the highest.The frontal electrical axis is almost perpendicular to aVL lead, so the algebraic sum of QRS amplitude is almost zero.
In frontal lead system, anatomical transposition and electrical transposition are not in good agreement, because some electrical transposition has nothing to do with anatomy.
The atrial foci originating from the anterior and posterior walls of the right atrium form an inverted P wave and positive and negative biphasic P wave in the V1 lead, respectively.

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