Monday 28 January 2013

Tutorial 28 January 2013


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Essays 28 January 2013.

16           EMQ. Parvovirus.            

You have been asked to write a protocol for the diagnosis and management of umbilical cord prolapse.
1. Justify the steps you will take.                                       6  marks
2. Justify the key advice you will include in the protocol. 14 marks      

A 30-year-old woman para 1+1 presents at 34 weeks gestation with right loin pain, frequency of micturition, dysuria and pyrexia.
1. Justify the history you will take.                6 marks.
2. Justify the investigations you will arrange.  6 marks.
3. Justify your management.                       12 marks. 

A 20 year-old woman with a known history of drug abuse attends the hospital antenatal booking clinic in her first pregnancy.
a. outline the factors determining her level of risk      4 marks.
b. outline the risks to the mother                              6 marks.
c. outline the risks to the fetus                                  4 marks.
d. outline the risks to the neonate & infant                4 marks.
e. outline the risk to others                                       2 marks.              

A nulliparous woman is admitted to the Early Pregnancy Unit with abdominal pain and bleeding. Her hCG is 2,000 i.u. per litre. An ultrasound scan shows an empty uterus and a left adnexal mass.
1.  Discuss the differential diagnosis.                                                    4 marks.
2.  Discuss the treatment options.                                                      10 marks.
3.  Discuss the advice you will give for when she has recovered.          6 marks.               


Lead-in.
The following scenarios relate to parvovirus infection
Pick one option from the option list.
Each option can be used once, more than once or not at all.

Abbreviations.
GOVRIP:        Guidance on Viral Rash in Pregnancy. HPA. 2011
                         http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1294740918985
HPA:               Health Protection Agency
PSVMCA:      peak systolic velocity middle cerebral artery.
PvB19:            parvovirus B19
PvIgG:            parvovirus B19 IgG
PvIgM:           parvovirus B19 IgM

Option list.
There is none: make up your own answers!
Scenario 1.
What type of virus is parvovirus?
Scenario 2.
Is the title B19 something to do with the American B19 bomber, its potentially devastating bomb load and the comparably devastating consequences of the parvovirus on human erythroid cell precursors?
Scenario 3.
PVB19 in the UK occurs in mini-epidemics at 3 – 4 year intervals, usually during the summer months.
Scenario 4.
Which animal acts as the main reservoir for infection?
Scenario 5.
What percentage of UK adults are immune to parvovirus infection?
Scenario 6.
What names are given to acute infection in the human?
Scenario 7.
What is the incubation period for parvovirus infection?
Scenario 8
What is the duration of infectivity for parvovirus infection?
Scenario 9.
What are the usual symptoms of parvovirus infection in the adult?
Scenario 10.
What is the incidence of parvovirus infection in pregnancy?
Scenario 11.
How is recent infection diagnosed?
Scenario 12.
How long does PvIgM persist and why is this important?
Scenario 13.
What is the rate of vertical transmission of parvovirus infection?
Scenario 14.
Are women with parvovirus infection who are asymptomatic less likely to pass the virus to their fetuses?
Scenario 15.
To what degree is parvovirus infection teratogenic?
Scenario 16.
What proportion of pregnancies infected with parvovirus are lost?
Scenario 17.
What is the timescale for the onset of hydrops?
Scenario 18.
Laboratories are advised to retain bloods obtained at booking for at least 2 years for possible future reference. True or false?
Scenario 19.
What ultrasound features would trigger consideration of cordocentesis?
Scenario 20.
Must suspected parvovirus infection be notified to the authorities?
Scenario 21.
Possible parvovirus infection does not need to be investigated after 20 week’s gestation.
Scenario 22
If serum is sent to the laboratory from a woman with a rash in pregnancy for screening for rubella, the laboratory should automatically test for parvovirus infection too.

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