Blood Type Antigens Quiz

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What are two antigens present on the surface of Mr. Mwamba's red cells, given that he is blood type A positive?

A and Rh antigens

Why is it important that Mr. Mwamba receives blood from a matched donor?

To prevent transfusion reactions

How might an injury to Mr. Mwamba's scrotum affect his fertility?

It could lead to impaired sperm production or quality

Does Mr. Mwamba's anaemia require urgent iron replacement? Justify your answer.

Yes, if the anemia is due to iron deficiency Signup and view all the answers

State two clinical signs of parvovirus B19 infection that occur due to the immune response to the virus.

Rash and arthritis Signup and view all the answers

Describe the clinical presentation of parvovirus B19 infection in children.

Respiratory tract infection followed by a rash with slapped cheek appearance and mild/transient anemia Signup and view all the answers

What type of epithelium is found in the membranous urethra?

Stratified columnar or pseudostratified columnar epithelium Signup and view all the answers

Which glands are usually affected in Benign Prostatic Hyperplasia (BPH)?

Submucosal glands (tubuloalveolar glands) Signup and view all the answers

Where is Jean-Pierre Mwamba originally from?

Rwanda Signup and view all the answers

What is Mr. Mwamba studying part-time at Main university?

Accounting Signup and view all the answers

What language skill of Mr. Mwamba is useful in the university library?

Fluency in French Signup and view all the answers

What type of epithelium lines the ejaculatory ducts?

Smooth muscle Signup and view all the answers

What are the injuries Mr Mwamba suffered from?

Severe bruising of his left lateral chest and abdomen, scrotum, fractured pelvis, fractured left ulna, suspected ruptured spleen Signup and view all the answers

Why was a suprapubic catheter inserted instead of a urinary catheter for Mr Mwamba?

Because blood was seen at the urethral meatus Signup and view all the answers

What did the urine Dipstix confirm for Mr Mwamba?

Haematuria Signup and view all the answers

What was Mr Mwamba's Hemoglobin level before the operation?

8.0 g/dl Signup and view all the answers

Why was Mr Mwamba referred to the hospital psychiatrist a week after his surgery?

Because he seemed depressed Signup and view all the answers

Why couldn't the doctor refer Mr Mwamba and his wife for infertility treatment?

Because they are not South African Signup and view all the answers

List four complications of parvovirus B19 infection, other than death.

Chronic infection in immunocompromised persons, Severe anaemia, Arthritis, Myocarditis Signup and view all the answers

Describe the possible fetal complications of parvovirus B19 infection in pregnancy and their pathogenesis.

Spontaneous abortion, fetal death, hydrops fetalis. Pathogenesis: Infection of mother, infection of fetus, infection of fetal RBC precursors, fetal anaemia, fetal death/cardiac failure, severe oedema of the fetus = hydrops foetalis. Signup and view all the answers

Outline the mechanism by which chicken pox results later in life with shingles.

Primary infection virus becomes latent in dorsal root ganglia, reactivation viral spread down sensory nerves to the skin. Signup and view all the answers

Name three complications of a mumps virus infection.

Deafness, meningitis, encephalitis Signup and view all the answers

Explain why a young healthy child who is PCR positive for parvovirus B19 was found to be IgM and IgG negative.

The opsonised PV B19 has formed Ab-Ag immune complexes, making the level of free Ab in the test sample not detectable before the patient develops symptoms and produces antibodies. Signup and view all the answers

What are two fetal complications of parvovirus B19 infection in pregnancy that can occur in the 1st and 2nd trimesters respectively?

Spontaneous abortion (especially 1st trimester) and fetal death (2nd trimester) Signup and view all the answers