Cardiac Medications Flashcards
What are pharmacokinetics?
- how drug is absorbed
- how it is delivered to target site
- how it is metabolized
- how it is excreted
What are pharmacodynamics?
- drugs specific action
- clinical effects
What are parenteral routes?
- injection
- sublingual
- inhalation
- transdermal
What is parenteral distribution route?
- non gastrointestinal absorption
- fast acting
What are the enteral routes?
- oral
- rectal
What are enteral distribution routes?
- gastrointestinal system
- convenient & most common
Where can drug receptors be located?
- ANS
- kidney
- smooth muscle
What organ provides the major excretory function for cardiovascular drugs?
kidneys
Do children or adults metabolize drugs quicker?
children
Why are the elderly more susceptible to overdose toxicity?
metabolism in elderly is slower
What medications are included in Class I Antiarrhytmics: Sodium Channel Blockers?
- Lidocaine
- Rhythmol
What class of medications does Lidocaine belong in?
Class I Antiarrhythmics: Sodium Channel Blockers
What is the action of Lidocaine?
slow myocardial conduction (shorter refractory period)
What are the adverse effects of Lidocaine?
- Dizziness*
- CNS disturbances*
- aggravation of some arrhythmias
- visual disturbances
- nausea
When is Lidocaine used?
- Acute PVC
- Ventricular arrhythmia with MI
What is the action of Rhythmol?
slow repolarization
What are the adverse effects of Rhythmol?
- arrhythmogenic during exercise
- defibrillation problems
When is Rhythmol used?
- VT
- PVC
What class of drugs does Rhythmol belong to?
Class I Antiarrhythmics: Sodium Channel Blockers
What doe Beta 1 receptors have an affinity for?
- Epinephrine
- Norepinephrine
What does it mean if a beta blocker is non-selective?
Will block beta 1 & beta 2 receptors
Are the medications, Propranolol (Propranolol, Inderol), Carvedilol selective or non-selective beta blockers?
Nonselective
What class of drugs does Propranolol (Propranolol, Inderol), Carvedilol belong to?
Class II Anti-arrhythmics: Beta Blockers
When are Propranolol (Propranolol, Inderol), Carvedilol used?
- angina
- HTN
- arrhythmias
What is the action of Propranolol (Propranolol, Inderol), Carvedilol?
slow down conduction through the myocardium, and cause smooth muscle relaxation
What are the adverse effects of Propranolol (Propranolol, Inderol), Carvedilol?
- may decrease CO*
- bradycardic dysrhythmias*
- bronchospasm *
- cold extremities *
- masking of hypoglycemia *
- fatigue
- insomnia
- shown to decrease HDL levels
What class of drugs does Metoprolol (Lopressor), Atenolol belong to?
Class II Anti-arrhytmics: Beta Blockers
When is Metoprolol (Lopressor), Atenolol used?
- angine
- HTN
- arrhythmias
Are Metoprolol (Lopressor), Atenolol selective or nonselective?
Selective
What is the action of Metoprolol (Lopressor), Atenolol?
slow down conduction through the myocardium, and cause smooth muscle relaxation
What are the adverse effects of Metoprolol (Lopressor), Atenolol?
- same as nonselective, but fewer peripheral side effects because only active at beta 1 receptors
Which receptor are selective beta blockers active at?
Beta 1 receptors
What class of drugs does Amiodarone belong to?
Class III Antiarrhythmics
When is Amiodarone used?
ventricular arrhythmias
What is the action of Amiodarone?
prolong repolarization to slow and stabilize HR
What are the adverse effects of Amiodarone?
- Pulmonary toxicity
- liver damage
When is Sublingual Nitroglycerine, Nitrolingual Spray used?
acute chest pain/rescue
What is the action of Sublingual Nitroglycerine, Nitrolingual Spray?
smooth muscle relaxation
What are the adverse effects of Sublingual Nitroglycerine, Nitrolingual Spray?
- ischemic headache*
- hypotension*
- may induce bronchospasm in some people
What type of medication is Transderm Nitro, Nitrodisc, Nitrodur?
Nitro Patch
What type of medication is Nitrol?
Nitro Ointment
What is the use Nitro patches of Ointment?
prevention of CP/angina
What is the action of Nitro patches of ointment?
smooth muscle relaxation
What are the adverse effects of Nitro Patches of Ointments?
- hypotension*
- Drug tolerance may occur with continuous use*
What medications are thrombolytic agents?
- Streptokinase
- Recombinant tPA
- Retovase
What class of drugs does Streptokinase, Recombinant tPA, Retovase belong to?
Thrombolytic agents
What is the action of Streptokinase?
cause clot dissolution
What are the adverse effects of Streptokinase?
Hemorrhage