FIRST LETTER

SECOND LETTER

THIRD LETTER

Chamber paced

Chamber sensed

Mode of response

V = ventricle

A = atrium

D = dual chamber

V = ventricle

A = atrium

D = dual chamber

O = none

I = inhibited

T = triggered

D = triggered & inhibited

O = none

Terminology

PacemakerCapture

Ability of pacemaker to cause depolarization of heart chamber

Sensitivity

Ability of pacemaker to detect intrinsic cardiac activity

The lower the number on the dial = the more sensitive the pacemaker

Important

If pt is being paced, always be sure to check for appropriate capture (pacer spikes followed by an electrical response).

The pacer mode should always be on the monitors if pt is paced.

If you suspect pacer has lost capture, notify fellow immediately and contact cardiology if  needed.

Pacemaker spike

PATIENT

Atrial wires = White
Ventricular wires = Blue