HCN Blockers Flashcards
1
Q
Medication
A
-Ivabradine
2
Q
Action
A
-Blocking the HCNs slows the heart’s pacemaker, the sinus node, in the repolarizing phase of the action potential
3
Q
Contraindications
A
- Allergy
- Active, decompensated HF; hypotension, sick sinus syndrome of AV block; resting HR under 60; patient’s completely dependent on a pacemaker and severe hepatic impairment
4
Q
Caution
A
-Atrial fibrillation or moderate heart block
5
Q
Adverse effects
A
-Bradycardia, hypotension, atrial fibrillation, and luminous phenomena (sudden changes in brightness in parts of the visual field, colored bright lights, image decompensation, multiple images)
6
Q
Drug-Drug interactions
A
- CYP3A4 Inhibitors or inducers
- Negative chronotropic drugs
7
Q
Assessment
A
- History: check for any contraindications
- Physical: Cardiac status, ECG, and appropriate lab values
8
Q
Nursing diagnoses
A
- Decreased cardiac output
- Risk for injury
- Ineffective tissue perfusion
- Deficient knowledge
9
Q
Implementation
A
- Monitor HR and BP regularly
- Monitor I&O’s and record daily weight
- Provide safety measures
- Provide pt teaching
10
Q
Evaluation
A
- Evaluation patient response to the drug (alleviation of signs and symptoms of heart failure)
- Monitor for adverse effects
- Evaluate the compliance with the regimen
- Evaluate the effectiveness of the teaching plan
