Online Access Free FRCEM Practice Test

You have designed a randomised control trial and need to make a calculation as to the sample size required such that we do not reject the null hypothesis when it is false Which component of the sample size calculation is most likely to avoid this error'?

• A.Standardised difference
• B.Significance level
• C.Power
• D.Variability
• E.Smallest effect of interest

A 78 year old woman presents with a painful shoulder after a fall. On examination she is unable to lift the dorsum of her hand off her mid-lumbar spine (lift-off test).
Which muscle is most likely to have been injured?

• A.Subscapulars
• B.Teres major
• C.Teres minor
• D.Supraspinatus
• E.Infraspinatus

A three week old baby is brought in by her concerned parents She is vomiting substantially after feeds and is failing to gain weight. Investigation reveals an alkalosis and a low serum potassium.
The alkalosis is most likely to be due to which mechanism?

• A.Exchange of H* at the gastric protein pump
• B.Loss of hydrochloric acid
• C.Increased loss of magnesium
• D.Increased production of bicarbonate
• E.Hypoventilation causing reduced pC02

A clinical pathway uses a predictive tool to guide use of diagnostic tests. Your patient has a high risk score, but a negative test They ask you how likely it is that they have the disease in question.
Which statistic are you most likely to use in your explanation?

• A.Specificity
• B.Negative predictive value
• C.Likelihood ratio
• D.Sensitivity
• E.Post-test probability

A 60 year old woman presents lo the ED feeling generally unwell She is found to be uraemic She has missed several of her renal dialysis sessions.
Urea will most likely move through the dialysis membranes by which mechanism?

• A.Co-transport
• B.Facilitated diffusion
• C.Active transport
• D.Simple diffusion
• E.Osmosis