electrical axis

The perpendicular spoke will point to the heart's electrical axis.

The heart's electrical axis in the horizontal plane is referred to as the 'Z axis'.

The electrical axis of the radio altimeter antenna was lined up with the axis of the cylinder.

Disorders of the conduction system of the heart can disturb the electrical axis without necessarily reflecting changes in muscle bulk.

The electrical axis of the SAR deviated from the spacecraft axis by 10 degrees.

Left bundle branch block widens the entire QRS, and in most cases shifts the heart's electrical axis to the left.

The heart's electrical axis refers to the general direction of the heart's depolarization wavefront (or mean electrical vector) in the frontal plane.

If lead II is positively deflected on the ECG, the heart's electrical axis in the frontal plane will be approximately +60 .

During the receive cycle, the outputs of the elevation and azimuth comparator arms represent the amount of angular displacement between the target position and electrical axis.

Then determine the direction the maximal ECG vector is "pointing", ie in which lead there are most positive amplitude - this direction is the electrical axis - see diagram.

Left axis deviation (LAD) is a condition whereby the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between -30 and -90 .

He found that energy fields surrounding salamanders possessed an energy field roughly shaped like the adult animal, and discovered that the field's electrical axis was aligned with the brain and spinal cord.

The phenomenon of piezo-electric effect can be briefly explained as follows: when pressure is applied along one axis of a crystal (mechanical axis), a potential difference develops across the transverse axis (electrical axis) of the crystal.

Together with leads I, II, and III, augmented limb leads aVR, aVL, and aVF form the basis of the hexaxial reference system, which is used to calculate the heart's electrical axis in the frontal plane.

It is seen in cardiac tamponade and severe pericardial effusion and is thought to be related to changes in the ventricular electrical axis due to fluid in the pericardium, as the heart essentially wobbles in the fluid filled precardial sac.

The hexaxial reference system, also known as the Cabrera system is a convention to present the extremity leads of the 12 lead electrocardiogram, that provides an illustrative logical sequence that helps interpretation of the ECG, especially to determine the heart's electrical axis in the frontal plane.

A bundle branch block can be diagnosed when the duration of the QRS complex on the ECG exceeds 120 ms. A right bundle branch block typically causes prolongation of the last part of the QRS complex, and may shift the heart's electrical axis slightly to the right.

Needing to find precisely when their electrical axis first originated in the development of the animal, he began mapping the fields in progressively earlier stages of salamander embryogenesis and discovered that the electrical axis originated in the unfertilized egg, thus contradicting conventional biological and genetic theory.