ANSWER 1

1. True. Urine dipstick testing is 97% (95% CI 92% to 99%) sensitive for ketonaemia in DKA.1 Mild ketonuria is found in the normal fasting state, therefore the test is not specific.

2. True. The mean difference between arterial and venous pH in DKA is 0.015–0.05.2^–4 An arterial blood gas analysis should be considered in suspected respiratory failure when an accurate measurement of carbon dioxide is …