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
11- Which drug is most often associated with hypotension caused by histamine release?
Anonymous Quiz
8%
a- Diazepam
8%
b- Pancuronium
83%
c- Tubocurarine
0%
d- Vecuronium
Drugs useful in treatment of hypertension include the following EXCEPT
Anonymous Quiz
0%
Nifedipine
100%
Methysergide
0%
a-Methyldopa
0%
Hydralazine
Which of the following siphat-blockers used mainly in essential hypertension:
Anonymous Quiz
23%
Phentolamine
0%
Phenoxybenzamin
46%
Doxazosin
31%
Ergotamine
Propranolol is contraindicated in:
Anonymous Quiz
7%
Angina pectoris
80%
Bronchial asthma
13%
Hypertension
0%
Arrhythmia
Propranolol can produce the following EXCEPT
Anonymous Quiz
100%
Stimulation of beta adrenoreceptors
0%
Depression of cardiac contractility
0%
Decreased blood pressure
0%
Decressed heart rate