Rces Study/pacing Terminology

Front 1

1. What is Pacing that is not inhibited by intrinsic beats

Back 1

Asynchronous

Front 2

2. When a Pacing stimulus is delivered between the tip and the ring electrodes on a pacing lead it is known as _____ pacing?

Back 2

Bipolar pacing

Front 3

3. Sensing of intrinsic electrical activity between the tip and the
ring electrodes of a pacing lead is known as _______ sensing?

Back 3

Bipolar Sensing

Front 4

4. The actual excitation or depolarization of cardiac tissue by a pacing
stimulus is known as?

Back 4

Capture

Front 5

5. Reasons why a pacing stimulus may "fail to capture"?

Back 5

Pacing stimulus is too weak
The tissue is refractory

Front 6

6. The lead input and circuitry on a pacemaker dedicated to a particular
chamber of the heart.

Back 6

Channel

Front 7

7.What is the initial state of activation of cardiac tissue?

Back 7

Depolarized

Front 8

8. Cardiac tissue is said to be ____ when it can be activated by a
pacing stimulus or an intrinsic wave of depolarization.

Back 8

Excitable

Front 9

9. The opposite of "Excitable" is?

Back 9

Refractory

Front 10

10. What is A beat or series of beats that result only from pacing? (in contrast intrinsically conducted beats)

Back 10

Fully Paced Beats

Front 11

11. Beats that result from a combination of a paced stimulus and intrinsic activation occur simultaneously are known as?

Back 11

fused beats

Front 12

12.What is the absence of intrinsic conduction between the atria and the
ventricles?

Back 12

Heart block

Front 13

14. P wave or QRS complex arising from the heart’s own electrical activity, in contrast to a paced beat is known as?

Back 13

Intrinsic beat (also intrinsic depolarization, intrinsic complex)

Front 14

15. The patients own Conduction of an atrial impulse (sensed or paced) via the His-Purkinje system, causing a ventricular QRS complex.

Back 14

Intrinsic conduction

Front 15

16. The insulated wire that runs from the pacemaker or defibrillator pulse
generator into the heart.

Back 15

Lead

Front 16

17. A description of the general way a pacemaker is programmed to pace.
This is described by a code of letters, which specifies which chambers are
paced, and in what ways they are paced.

Back 16

Mode

Front 17

18. Sensing on a channel of a pacemaker of something other than
what that channel is supposed to sense.

Back 17

Oversensing

Front 18

19. Examples of oversensing by a ventricular channel?

Back 18

The pacemaker interpreted one of these
signals as QRS complexes causing ventricular oversensing:

senses the T wave
senses an atrial pacing stimulus
senses electrical noise from a lead fracture

Front 19

20. Atrial activity, on the surface ECG, or as sensed by the pacemaker or defibrillator.

Back 19

P wave

Front 20

21.The delay between the delivery of the atrial pacing stimulus and the delivery of the ventricular pacing stimulus.

Back 20

Paced AV delay

Front 21

22. A P wave or QRS complex initiated by pacing, in contrast to an intrinsic beat.

Back 21

Paced beat

Front 22

23. The period after a ventricular
sensed or paced event, when the atrial channel is refractory.

Back 22

(PVARP) Post ventricular atrial refractory period

Front 23

24. The state of the cardiac cell membrane prior to activation
(depolarization). This refers to the separation of positive and negative chargeson the outside and inside of the cell, respectively.

Back 23

Polarized

Front 24

25. A pacemaker parameter that can be altered by using the manufacturer’s programmer is said to be?

Back 24

Programmable

Front 25

26. A portable device that allows communication with the pacemaker
or defibrillator via an electromagnetic telemetry link. This link allows
downloading of stored information from the pacemaker or defibrillator,and programming of various parameters

Back 25

Programmer

Front 26

27. The main body of the pacemaker or defibrillator that houses the battery and circuits.

Back 26

Pulse Generator

Front 27

28.The intrinsic QRS complex, as sensed by the pacemaker or defibrillator.

Back 27

The R wave

Front 28

29. Cardiac tissue is said to be ______ when it cannot be activated by
a pacing stimulus or an intrinsic wave of depolarization. The opposite of this
is excitable.

Back 28

Refractory

Front 29

30. The period of time after a depolarization when the tissue cannot be electrically excited. When the term is applied to a pacemaker, it refers to the period after a sensed or paced beat during which the pacemaker will ignore another sensed event. This is a programmable parameter.

Back 29

Refractory Period

Front 30

31. Electrical activity movingin the direction opposite to normal
(which is anterograde).

Back 30

Retrograde

Front 31

32. An intrinsic R wave or P wave that has been registered by the pacemaker
or defibrillator. Similar to intrinsic beat, but with the added requirement
that the pacemaker has actually sensed (or registered) the beat.

Back 31

Sensed beat

Front 32

33. The function of detecting the intrinsic electrical activity of the heart.

Back 32

Sensing

Front 33

34. A description of the level of the sensing function. The setting of
this function gives the minimum amplitude of intrinsic electrical activity that the pacemaker will register.

Back 33

Sensitivity

Front 34

35. True or False
If the sensitivity in the ventricular chamber of the pacemaker is set to 5 mV, the intrinsic R wave must transmit an electrical signal at least 5 mV in amplitude for the pacemaker to register that an intrinsic beat has occurred.

Back 34

True

Front 35

36. The way a pacemaker is programmed.

Back 35

Settings

Front 36

37.The electrical output delivered by a pacemaker, through a pacemaker
lead to the heart, in order to pace the heart.

Back 36

Stimulus

Front 37

38. The mark created by a pacemaker stimulus on the surface ECG or telemetry monitor.

Back 37

Stimulus Artifact

Front 38

39. A normal behavior of dual chamber pacing in a triggered mode. The
pacemaker senses activity in one chamber (usually the atrium) and delivers a pacing stimulus in the other chamber (usually the ventricle) after a certain time delay (the AV delay).

Back 38

Tracking

Front 39

40. A pacing mode in which a sensed beat triggers a paced beat.
This is most commonly used in a dual chamber pacemaker, so that a sensed
atrial beat triggers a paced ventricular beat, after an adjustable delay. In this
setting, the ventricle is said to be tracking the atrium.

Back 39

Triggered Mode

Front 40

41.Pacing stimulus delivery between the electrode of pacing lead and the shell of the pulse generator.

Back 40

Unipolar pacing

Front 41

42. Sensing of intrinsic electrical activity between the electrode of a pacing lead and the shell of the pulse generator.

Back 41

Unipolar sensing

Front 42

43. A short interval of time during which the pacemaker cannot sense any events. The first part of most refractory periods in demand pacemakers is a ________.

Back 42

Blanking period

Front 43

44. The active propagation of a depolarization wave in the heart.

Back 43

Conduction

Front 44

45. Heart cells pass on an electrical wave from one cell to the next. Some conduct the message faster than others, but virtually all heart cells have this property.

Back 44

Conduction

Front 45

46. A phenomenon that can occur in dual chamber pacemakers in which a stimulus or intrinsic event from one chamber is sensed by the other chamber (e.g., an atrial pacing output being sensed by the ventricular lead, or vice versa), resulting in an inappropriate pacemaker response such as inhibition or resetting of the refractory period

Back 45

Cross talk

Front 46

47.The area of complex
interaction between the pacing lead’s activeelectrode and the heart tissue.

Back 46

Electrode Tissue interface

Front 47

48. The total opposition to
electrical current flow in the pacing circuit measured in ohms (Ω).

Back 47

Lead impedence

Front 48

49. The duration of the pacing impulse, expressed in milliseconds.

Back 48

Pulse width (pulse duration)

Front 49

50. The negative pole in an electrical circuit. Usually the lead electrode (tip) in a pacing system.

Back 49

Cathode

Front 50

51. The positive electrode of an electrical circuit.

Back 50

Anode