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Pharm term 2

Beta Blockers

QuestionAnswer
What are beta blockers also known as? Beta adrenergic blocking agents
Where are beta 1 receptors located? In the heart
Where are beta 2 receptors found? In the lungs
How do beta blockers work? By blocking the effects of norepinephrine and epinephrine they reduce heart rate, reduce blood pressure by dilating blood vessels
How do non selective beta blockers work? ( propranolol /inderal) l black b1 and b2 receptors therefore affect the heart, blood vessels and air passages
How do selective beta blockers work? Metoprolol, lopressor Primarily block B 1 receptors and therefore mostly affect the heart and do not affect air passages
How does Labetalol /normadyne and Carvedilol/ coreg work? They block beta and alpha 1 receptors. Blocking alpha receptors adds to the blood vessel dilating effect of labetalol and carvedilol
What is a side effect of beta blockers that block B 2 receptors? They may cause shortness of breath in asthmatics.
What is the beta that beta blockers block? Beta adrenergic receptors of the SNS
Which condition might be an indication for beta-blockade? BP 190 / 101
For what purpose are cardiac patients often prescribed beta blockers? anti aginal
A patient on lopressor complains of fatigue and slow heart rate. What do you suspect? Normal effect of beta-blockade
To reduce myocardial oxygen consumption, angina pectoris patients sometimes take: Lopressor
Fatigue and slow heart rates often occur with administration of: Beta blockers
What letters do beta blockers tend to end in? Lol
The generic name for inderal is: Propranolol
The following pathology is a relative contraindication for administering certain beta antagonist: Status asthmaticus
What drug when used in therapeutic doses, intentionally depresses the pumping action of the heart? Propranolol
Patients receiving beta-blockers will have Increased R-R interval
Loss of effectiveness of beta-blockade over a long period of time may be due to: Receptor up-regulation
Beta blockers ultimately reduce the coupling of actin and myosin fibrils by their effect on the chemical Troponin I
Increase in the number of beta receptors present on cell membranes in response to sustained beta-blockade is known as: Upregulation
Beta blockers reduce oxygen demand by decreasing the double product which isv Heart rate times blood pressure
Beta blocker dosage is adjusted to attain a resting heart rate ofv 55 to 60 beats per minute
Post-infarction, administration of beta blockers Reduces mortality 35%
Effects of beta blockers include Decreasing cardiac muscle contractility
Which of the following is an indication for beta blocker therapy? Prevention or treatment of an MI
Timolol is a non-selective beta antagonist. Therefore its use is contraindicated in patients with: Asthma
Which of the following statements best describes one of the mechanism of action of beta adrenergic blocking agents? The inhibition of the reaction between norepinephrine and the receptor.
Metoprolol tartrate is used as an: Anti hypertensive
Labetalol/normodyne would not be used to treat: Asystole
Labetalol/normodyne may be used to treat: Hypertension, angina, symptomatic mitral valve prolapse, sinus tachycardia caused by hyperthyroidism
Created by: ICVT2b
 

 



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