NA is contraindicated in
Anonymous Quiz
0%
Shock
10%
With local anathesia
0%
Acute hypotensive state
90%
Hypertension
Ephedrine is used as an adjuvant drug in myasthenia gravis because:
Anonymous Quiz
11%
It stimulates directly Nm receptors in NMJ
11%
It dilates BVs of skeletal ms
0%
It inhibits Choline esterase enzyme and can be used as an alternative to neostigmine
11%
It facilitates NM transmission and allows rapid recovery from fatigue
68%
Both B AND D
Indicate the agent of choice in the emergency therapy of anaphylactic shock:
Anonymous Quiz
0%
Methoxamine
0%
Terbutaline
14%
Norepinephrine
86%
Epinephrine
All of the following are possible therapeutic uses of ephedrine except:
Anonymous Quiz
84%
Benign prostatic hyperplasia
5%
Prophylaxis against bronchial asthma
0%
Narcolepsy
0%
Nocturnal eneuresis
11%
Hypotension
Which of the following is a prodrug of adrenaline used topically in glaucoma
Anonymous Quiz
5%
Brimonidine
85%
Dipivefrine
5%
Phenylpropranolamine
5%
Dorzolamide
Concerning amphetamine
Anonymous Quiz
11%
It's a non catecholamine synthetic sympathomimetic
11%
Not metabolized by MAO inhibitor but giving MAOI with amphetamine can cause severe hypertension
0%
It acts by stimulating the release of NE from adrenergic nerve endings
6%
It's a potent CNS stimulat highly addictive drug
72%
All of the above
Which of the following is an Atropine substitute not matched correctly with its use :
Anonymous Quiz
0%
Hyoscine butyl bromide in colic
90%
Tiotropium in urinary incontinence
0%
Tropicamide for eye fundus examination
10%
Benztropine in parkinsonism
A 44-year-old man comes to his physician complaining of
intermittent fatigue. On physical examination he exhibits drooping
eyelids. Administration of which of the following agents is most appropriate to confirm a diagnosis of myasthenia gravis?
intermittent fatigue. On physical examination he exhibits drooping
eyelids. Administration of which of the following agents is most appropriate to confirm a diagnosis of myasthenia gravis?
Anonymous Quiz
0%
Adrenaline
91%
Edrophonium
5%
Bethanecol
5%
Physostigmine
Indications of isoprenaline include :
Anonymous Quiz
4%
Acute attacks of bronchial asthma
4%
AV block
4%
Acute attacks of angina
4%
Ventricular arrythmias
83%
Both a and b
Concerning dopamine choose the false statement:
Anonymous Quiz
0%
It's pharmacological actions depend on the rate of IV infusion
5%
Its pharmacological actions are exaggerated in patients receiving MAO inhibitors
10%
Its pharmacological actions can be theoretically blocked byhaloperidol ,propranolol and phentolamine
85%
It has more positive chronotropic than inotropic action
Propranolol has the following actions except:
Anonymous Quiz
4%
Negative chronotropic
75%
Initial stimulation of beta receptors followed by block
4%
Hypotensive action on prolonged use
8%
Anti- anginal action in stable angina.
8%
Anti anxiety action
Regarding beta blockers , choose the wrong statement:
Anonymous Quiz
15%
Esmolol drug is metabolized by blood esterase enzyme.
42%
Propranolol has membrane stabilizing action but Intrinsic sympathomimetic action
35%
Metoprolol is a cardioselective beta blocker with ISA
8%
Nebivolol is the most beta 1 selective.
3- Release of calcium from sarcoplasmic reticulum of skeletal muscle is prevented by:
Anonymous Quiz
56%
a. Dantarolene
13%
b. Tubocurarine
13%
c. Baclofen
19%
d. Succinylcholine
4- Concerning skeletal muscle relaxants, which of the following is INCORRECT:
Anonymous Quiz
0%
a. Atracurium is a competitive neuromuscular blocker
0%
b. Succinylcholine is a depolarizing neuromuscular blocker
81%
c. Neostigmine can reverse the action of succinylcholine.
19%
d. Benzodiazepines are central muscle relaxants.
5- Prolonged apnea is sometimes seen in patients who have undergone an operation. Which of the following muscle relaxants could be the cause?
Anonymous Quiz
38%
a- Tubocurarine
62%
b- Succinylcholine
0%
c- Mivacurium
0%
d- Vecuronium
6- The underlying cause of the prolonged apnea resulting from succinylcholine is:
Anonymous Quiz
8%
a- Cardiac arrest
25%
b-A mutation in acetyl cholinesterase
8%
c- Increased release of nicotine at MĪĪ”
58%
d- Decreased levels of plasma cholinesterase
7-A 30 year-old female is being prepared for anesthesia before exploratory surgery for a mass in her neck.In addition to using an inhalation anesthetic, which one of the following drugs is given to cause complete paralysis of the skeletal muscles?
Anonymous Quiz
8%
a- Baclofen
77%
c- Atracurium
8%
b- Dantrolene
8%
d- Diazepam
8- patient having normal hepatic & renal functions was given a bolus I.V. dose of a NM blocker with duration of action should have lasted for 5-10 min. Instead, the patient required mechanical ventilation for 8 hours. Which statement is correct?
Anonymous Quiz
27%
a- The agent administered was atracurium
55%
b- This is an example of genetic variation in drug metabolism
0%
c- The agent was tubocurarine
18%
d- It is due to rapid distribution of the drug into the brain
9- Which of the following drugs is effective in the management of malignant hyperthermia?
Anonymous Quiz
7%
a- Baclofen
64%
b- Dantrolene
21%
c- Succinylcholine
7%
d- Vecuronium
10- Which of the following drugs could produce hyperkalemia leading to cardiac arrest especially in patients with excessive burns?
Anonymous Quiz
8%
a- Baclofen
0%
b- Dantrolene
0%
c- Tubocurarine
92%
d- Succinylcholine