MCQ Paper No.6

Please select True or False for the following questions.

1. With regards to High Frequency Oscillatory Ventilation (HFOV):

a. An increase in frequency leads to an increase in carbon dioxide clearance
b.  Bias flow should be decreased in cases of broncho-pleural fistula
c. Mean airways pressure is generally decreased in comparison to conventional ventilation
d.  Blood pressure may fall on commencing HFOV
e.  HFOV is associated with a decrease in mortality in adult ARDS patients
2. With regards to child protection:

a. All clinical staff who have contact with children, young people and/or parents/carers should have level 2 child protection training
b. Children with learning disabilities are at increased risk of abuse
c. Low birth weight children are at increased risk of abuse
d. Neglect is the most common form of abuse
e. A sub-arachnoid haemorrhage in a child is associated with physical abuse
3. With regards to statistics:

a. The null hypothesis states that there is a difference between the groups studied
b. Type I error rejects the null hypothesis when it is actually true
c. Increasing the power of a study reduces the risk of Type I error
d. Increasing the expected difference between 2 study populations when designing a study will decrease the number of participants that must be recruited to achieve a power of 80%
e. A crossover study testing the effect of two anti-hypertensive agents on blood pressure should be analysed using the paired t-test.
4. With regards to ECMO:

a. Arteriovenous ECMO utilises an extra-corporal pump to drive flow through the oxygenator
b. CO2 is exchanged more efficiently within the oxygenator than oxygen
c. Aterio-venous ECMO required a cardiac index of at least 2.5 L min-1 m-2
d. A SIRS reaction may be seen in response to decannulation
e. Veno-arterial ECMO is contraindicated in severe aortic regurgitation
5. With regards to risk prediction in the  ICNARC (2009) model :

a. The ICNARC physiology score is from 0-10
b. Source of admission is used
c. The ICNARC physiology score consists of 10 parameters
d. The ICNARC physiology score uses haematocrit as one of its variables
e. Burns admissions are excluded from the ICNARC (2009) model

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