DMF Week 3 SAQ


Select the CORRECT statement regarding the characteristics of Pseudomonas aeruginosa:


Which one of the following statements is CORRECT regarding bacteria which cause opportunistic infections?


Following a hip replacement, the bone and surrounding area became infected, with ensuing tissue necrosis. Gram positive rods were detected in the foul-smelling discharge which was associated with the surgical site. The laboratory cultured organisms which grew on media incubated in the absence of air, but not in air. Which one of the following statements best reflects the most likely cause of the problem?


Which one of the following statements regarding innate and adaptive immunity is INCORRECT?


Mr. W.B. has presented to his local GP with persistent fever, malaise, and anorexia. He has tachycardia, and a temperature of 38.3 degrees Celsius. His blood pressure and respiratory rate are normal. He has no lymphadenopathy, and examination of abdomen, lungs and rectum are normal. However, a cardiac murmur is heard over the pericardium. He has had a history of poor dental hygiene and gum problems. A diagnosis of infective endocarditis is considered by his GP. Which one of the following options is the least appropriate for the management of his current problem?


(continued) An organism is cultured from all three sets of the blood cultures. It is found to be a catalase negative Gram positive coccus, which grows on HBA as a small, greyish colony with greening (alpha) haemolysis. From the data provided above, and your knowledge of organisms implicated in the aetiology of endocarditis, select the likely organism which has caused Mr. W.B's disease?


Regarding sterilisation processes, which one of the following statements is INCORRECT?