MARK KLIMEK
LECTURE #3
JANUARY 24, 2018
CALCIUM CHANNEL BLOCKERS
Calcium channel blockers are like valium for your heart. Calms the
heart down. Indicators – tachycardia, tacharythmias
Negative intropic, chronotropic, dromotropic (relax your heart, calm it
down)
They treat – A (antihypertensives), AA (antianginal), AAA (anti-atrial
arythmia) they treat atrial dysrhythmias and supraventricular
contractions (SVT)
Names – majority end in -dipine (amlodipine, nifedipine) & verapamil,
cardizem (can be given as a continuous IV drip)
Side effects – headache & HYPOtension (take BP before administering,
hold if systolic is <100)
CARDIAC ARRYTHMIAS
QRS refers to – Ventricular
P refers to – Atrial
ATRIAL FLUTTER
Rapid P wave repolarizations in a saw tooth pattern
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, ATRIAL FIBRILLATION
chaotic QRS depolarizations, heart rate is irregular
TX: HEPARIN first, then ABCD
VENTRICULAR FIBRILLATION
Chaotic QRS depolarizations
TX: defibrillation (shock them)
VENTRICULAR TACHYCARDIA
Wide bizarre QRS’s
TX: Lidocaine & amiodarone
2
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