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1.Легка
Why is HIV treated with a combination of antiretroviral drugs?
ABecause one drug alone causes no side effects
BTo suppress the virus and prevent drug resistance
CTo make the treatment shorter, usually a few weeks
DBecause each single drug cures only part of the infection
2.Легка
How long does it usually take for an SSRI to improve mood noticeably?
AA few hours
BOne or two days
CSeveral weeks
DAbout six months
3.Легка
Giving a patient immunoglobulin after exposure to an infection provides which type of immunity?
AActive immunity
BPassive immunity
CHerd immunity
DInnate immunity
4.Середня
Why are benzodiazepines used with great caution in older people?
AThey raise the risk of confusion, falls and fractures
BThey cause permanent hearing loss in older people
CThey are not absorbed from the gut after age 65
DThey cause severe high blood pressure in older people
5.Середня
A patient is due the first dose of IV cefuroxime. Which question is most important before giving it?
A"Have you taken paracetamol today?"
B"Do you prefer the drip in your left arm or in your right arm?"
C"Have you eaten anything in the last two hours?"
D"Have you ever had a reaction to penicillin or another antibiotic?"
6.Середня
An Rh-negative mother gives birth to an Rh-positive baby. When is anti-D immunoglobulin usually given?
AOnly at the start of the next pregnancy
BWithin 72 hours after the birth
CAt least two weeks after the birth
DIt is not needed if the baby is Rh-positive
7.Складна
Why is gentamicin often given once daily instead of in several small doses?
AIt has a very long half-life of several days
BIt is absorbed slowly from the muscle over 24 hours
CIts killing depends on high peak levels, with a post-antibiotic effect
DIts killing depends only on the time the level stays above the MIC