AACN: ECCO 4.0: Caring for Patients with Cardiovascular
Disorders: Part 3 - ICU: Assessing and Managing Patients
with Cardiomyopathies Questions with Verified Answers.
Terms in this set (32)
1. dual chamber pacing
The AV interval
2. PR interval
1. is available during what
type of pacing
2. is similar to what it is the delay between a sensed or paced atrial and the paced ventricular
event
functionality of pacemaker: 1. beats/min
1. rate 2. mA, electrical energy sent to heart
2. output 3. mV; the ability of the pacemaker to sense the heart's intrinsic electrical
3. sensitivity activity
the pacemaker will not be able to
sense the R waves
if sensitivity is too high
pacemaker will be able to sense R waves
if sensitivity is lowered/wdl
sensitivity is set so the pacemaker only generates pacing
demand pacing or synchronous stimuli if the patient heart fails to do so after a set interval
pacing time. Therefore, lack of intrisinc cardiac activity
triggers the pacemaker to generate an impulse
the pacemaker cannot sense intrinsic cardiac activity. The
fixed pacing or asynchronous
pacing pacemaker delivers output at a set rate, whether the patient is
asystolic or has an intrinsic cardiac rhythm.
, Capture is indicated by a pacing spike immediately followed by a
assessing capture
p wave or a qrs complex
1. ensure secure contact with
lead/bridging wires 2, set
mode/rate according to provider
initiating temporary pacing
3. set output: increase mA until capture, output may be set to a
maximum mA to obtain capture quickly
4. set sensitivity: STARTING AT A HIGHER NUMBER,
DECREASE SENSITIVITY UNTIL THE
PACEMAKER IS SENSING THE PATIENTS
INTRINSIC BEATS
MRI SHOULE BE AVOIDED UNLESS IT IS VERIFIED
THAT THE PATIENT HAS AN MRI CONDITIONAL
MRI AND CT DEVICE, IF SO, CONSULT CARDIOLOGY
PRECAUTIONS FOR
PATIENTS WITH A CT SCAN MAY INTERFERE WITH
PACEMAKER PACEMAKER/ICD FUNCTION, AVOID IF POSSIBLE,
AFTER CT PROVIDER SHOULD CHECK THE
DEVICE AT THE NEXT SCHEDULED PATIENT F/U
Allergy to
dye/idodine/shellfish
CT contraindications
Pregnancy
Renal failure
metformin
with dye
a. metallic implants
b. gold fillings
mri contraindicated c. pacemaker
d. those who are claustrophobic
e. unstable vital signs
1. transvenous: lead wires
advanced through
peripheral/ventral vein (
types of temp pacemakers
jugular, subclavian, femoral,
brachial)
2. epicardial: stimulus delivered
to epicardial surface
3. transcutaneous:
- Transvenous- used to correct symptomatic bradycardia,
Disorders: Part 3 - ICU: Assessing and Managing Patients
with Cardiomyopathies Questions with Verified Answers.
Terms in this set (32)
1. dual chamber pacing
The AV interval
2. PR interval
1. is available during what
type of pacing
2. is similar to what it is the delay between a sensed or paced atrial and the paced ventricular
event
functionality of pacemaker: 1. beats/min
1. rate 2. mA, electrical energy sent to heart
2. output 3. mV; the ability of the pacemaker to sense the heart's intrinsic electrical
3. sensitivity activity
the pacemaker will not be able to
sense the R waves
if sensitivity is too high
pacemaker will be able to sense R waves
if sensitivity is lowered/wdl
sensitivity is set so the pacemaker only generates pacing
demand pacing or synchronous stimuli if the patient heart fails to do so after a set interval
pacing time. Therefore, lack of intrisinc cardiac activity
triggers the pacemaker to generate an impulse
the pacemaker cannot sense intrinsic cardiac activity. The
fixed pacing or asynchronous
pacing pacemaker delivers output at a set rate, whether the patient is
asystolic or has an intrinsic cardiac rhythm.
, Capture is indicated by a pacing spike immediately followed by a
assessing capture
p wave or a qrs complex
1. ensure secure contact with
lead/bridging wires 2, set
mode/rate according to provider
initiating temporary pacing
3. set output: increase mA until capture, output may be set to a
maximum mA to obtain capture quickly
4. set sensitivity: STARTING AT A HIGHER NUMBER,
DECREASE SENSITIVITY UNTIL THE
PACEMAKER IS SENSING THE PATIENTS
INTRINSIC BEATS
MRI SHOULE BE AVOIDED UNLESS IT IS VERIFIED
THAT THE PATIENT HAS AN MRI CONDITIONAL
MRI AND CT DEVICE, IF SO, CONSULT CARDIOLOGY
PRECAUTIONS FOR
PATIENTS WITH A CT SCAN MAY INTERFERE WITH
PACEMAKER PACEMAKER/ICD FUNCTION, AVOID IF POSSIBLE,
AFTER CT PROVIDER SHOULD CHECK THE
DEVICE AT THE NEXT SCHEDULED PATIENT F/U
Allergy to
dye/idodine/shellfish
CT contraindications
Pregnancy
Renal failure
metformin
with dye
a. metallic implants
b. gold fillings
mri contraindicated c. pacemaker
d. those who are claustrophobic
e. unstable vital signs
1. transvenous: lead wires
advanced through
peripheral/ventral vein (
types of temp pacemakers
jugular, subclavian, femoral,
brachial)
2. epicardial: stimulus delivered
to epicardial surface
3. transcutaneous:
- Transvenous- used to correct symptomatic bradycardia,
