CVICU MEDS

Question 1

Mechanism of beta blockers and an example of a name.

Answer 1

Blocks epi( sympathetic) and causes Vasodilation.
Example : METAPROLOL

Question 2

Metoprolol use, side effects, nursing implications.

Answer 2

Used for HF, hypertension , angina stable.

Nursing implications: assess BP, HR. fluid balance assessment , glucose.

Question 3

ACE inhibitors example and mechanism

Answer 3

Perindopril.

Decreases sympathetic and causes vasodilation.

Question 4

ACE inhibitor nurse implications / side effects.

Answer 4

Cardiac function, blood glucose , renal function ( BUN , CR, urine cause same impacts aldosterone) , hyperglycaemia,
COMMON TO HAVE COUGH.

Question 5

Important nursing implications of diuretics

Answer 5

Daily weights, ins and outs, ortho static monitoring , electrolyte monitoring, dehydration’s

Question 6

CLASS 1A sodium channel blocker mechanism

Answer 6

Prolongs depolarization of SA node, also block potassium channels which decreases conduction speed. Also antagonize parasympathetic causing an increase of AV conduction.

Question 7

Use of class 1A sodium channel blockers

Answer 7

Atrial fibrillation, atrial flutter , SV and ventricular arrhythmias.

Question 8

Examples of class 1 A sodium channel blockers and side effects.

Answer 8

Procainamide, disopyramide, quinidine.

Urinary retention, dry mouth , QT prolongation.

Question 9

Mechanism of class 1B sodium channel blockers

Answer 9

Antagonize closed and open sodium channels changing ventricular AP which results in shorter depolarization.

Question 10

Uses for class 1B

Answer 10

Ventricular dysrhythmias , PVC

Question 11

Examples of class B and side effects

Answer 11

Lidocaine, mexiletine

Seizures, dizzy , nausea , tremors.

Question 12

CLASS 1c mechanism .

Answer 12

Most potent. Antagonize sodium channels during phase 0 causing suppression of premature ventricular contractions.

Question 13

Class 1C use

Answer 13

severe ventricular tachycardia

Question 14

Examples of 1C

Answer 14

flecainide , propafenone.

Question 15

CLASS II : beta blockers

Used in what arythmia

Answer 15

Catecholamine stimulated tachyarrhythmias.

Question 16

Class III potassium channel blockers: examples

And use for

Answer 16

Amiodarone, dofetilide,

Severe ventricular dysrhythmias

Question 17

Nitroprusside ( NIPRIDE) : mechanism

Answer 17

Directly causes vasodilation and a decrease in peripheral resistance. This reduces after load and increases CO.

Question 18

Side effects of nipride

Answer 18

Brady cardia, hypotension, flushing , rash, reduced platelet aggregation.

Question 19

Nitroglycerin mechanism and uses

Answer 19

Forms free NO radicals causing vasodilation. Decreases myocardial o2 demand by reducing preload.
Uses : angina pectoris, hypertension, HF.