passmed incorrect

Question 1

what shows ongoing c.diff infection?

Answer 1

+ve c.diff toxin

Question 2

what does c.diff antigen show?

Answer 2

C. difficile antigen positivity only shows exposure to the bacteria, rather than current infection

Question 3

what are features of life-threatening c.diff?

Answer 3

Hypotension
Partial or complete ileus
Toxic megacolon, or CT evidence of severe disease

Question 4

what are features of severe c.diff?

Answer 4

↑ WCC ( > 15 x 109/L)
or an acutely ↑ creatinine (> 50% above baseline)
or a temperature > 38.5°C
or evidence of severe colitis(abdominal or radiological signs)

Question 5

what are features of moderate c.diff?

Answer 5

↑ WCC ( < 15 x 109/L)
Typically 3-5 loose stools per day

Question 6

what are features of mild c.diff?

Answer 6

Normal WCC

Question 7

what virus is implicated in infection following renal transplant?

Answer 7

CMV

Question 8

what infection are people at risk of following chickenpox?

Answer 8

Chickenpox is a risk factor for invasive group A streptococcal soft tissue infections including necrotizing fasciitis

Question 9

what should all patients with a CD4 count lower than 200/mm3 receive?

Answer 9

prophylaxis against Pneumocystis jiroveci pneumonia eg co-trimoxazole

Question 10

mx for epididymo-orchitis with unknown organism?

Answer 10

ceftriaxone 500mg intramuscularly single dose, plus oral doxycycline 100mg twice daily for 10-14 days

Question 11

what is characteristic of ARDS on CXR?

Answer 11

ARDS is characterised by bilateral pulmonary infiltrates and hypoxaemia

Question 12

what is Palivizumab?

Answer 12

a monoclonal antibody which is used to prevent respiratory syncytial virus (RSV) in children who are at increased risk of severe disease.

Question 13

how do you treat c.Jejuni infection?

Answer 13

Campylobacter infection is often self-limiting but if severe then treatment with clarithromycin may be indicated

Question 14

what is the main risk factor for cholangiocarcinoma?

Answer 14

Primary sclerosing cholangitis

Question 15

features of cholangiocarinoma?

Answer 15

persistent biliary colic symptoms
associated with anorexia, jaundice and weight loss
a palpable mass in the right upper quadrant (Courvoisier sign)
periumbilical lymphadenopathy (Sister Mary Joseph nodes) and left supraclavicular adenopathy (Virchow node) may be seen
raised CA 19-9 levels

Question 16

what tx can be given in chickenpox?

Answer 16

calamine lotion to soothe the itch and paracetamol to control the fever

Question 17

what is this?

Answer 17

tinea corporis