EKG ACQUISITION CORRECT FINALS ANSWERS AND QUESTIONS SET A.pdf

EKG ACQUISITION CORRECT FINALS ANSWERS AND
QUESTIONS SET A+
✔✔Depolarization - ✔✔continues towards the apex of the heart, through the bundle of
His, and left/right bundle branches, and terminates in the Purkinje Fibers.

✔✔Ectopic beats: - ✔✔Can be seen on the EKG as a premature atrial, junctional, or
ventricular complex.

✔✔Electrical impulse: - ✔✔Conduction from the SA node to the AV node through the
internal pathways (located in the atrial wall).

✔✔Internodal pathways - ✔✔Known as Bachmann's bundle (interatrial tract), they are
connected with the right and left atrium.

✔✔Right Bundle Branch: - ✔✔Carries electrical impulses from the bundle of His to the
Purkinje fibers of the left ventricle, causing depolarization.

✔✔Speed - ✔✔25 mm/second

✔✔If the rhythm is tachycardic - ✔✔increase the speed to 50 mm/second.

✔✔Gain - ✔✔(amplitude): 10 mm per 1 mV.

✔✔If the tracing is a positive deflected rectangular-shaped standard calibration -
✔✔change to 5 mm

✔✔If the tracing is a negative deflected rectangular-shaped standard calibration -
✔✔increase to 20mm

✔✔Children often require the gain - ✔✔to be decreased