Lecture 25 - Cystic Fibrosis Flashcards

1
Q

Newborn Screening process?

A

20+ disorders, 45 babies p/yr diagnosed

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2
Q

Cf phys?

A

CFTR mutation, Cl- cannot leave cell due to misformed receptor causing NA+ and wateer influx leaving thick sticky mucus

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3
Q

CF newborn screen?

A

Build up of trypsin (pancreatic enzyme) in blood due to blocked duct

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4
Q

Testing whether baby has Cf or is carrier?

A

sweat test, genetic test, stool sample for enzymes

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5
Q

Progressions for infant CF?

A

recurrent pneumonias, progressive lung disease, poor growth

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6
Q

managing baby w CF?

A

regular review - history, growth, physical signs

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7
Q

Physical signs of CF?

A

finger clubbing, chest deformity, cough

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8
Q

Management - respiratory testing

A

oxygen saturation monitoring, lung function testing, radiology

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9
Q

Management - check for infection?

A

swab, couh suction machine, bronchoscopy, sputum

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10
Q

Treatments - respiratory?

A

respiratory chest physio, exercise, antibiotics

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11
Q

Treatments - nutrition?

A

enzyme replacement, vitamin supplement, salt, hugh calorie diet, nutritional supplement, gastrostomy feeding

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12
Q

Treatments - other?

A

correctors (correcting defect) or potentiators (improving channel opening) - different defects from different genes.

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13
Q

Genetic Counselling Definition?

A

Communication process aiming at helping individuals, couples and families understnd and adapt to medical, psychological, familial and reproductive implications of genetic contributions specific health conditions

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14
Q

GC topics?

A

reviewing diagnosis, answering questions, arrange testing, checking coping, referrals

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15
Q

Considerations for GC?

A

non paternity, informed consent, stress of diagnosis, guilt, future options

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16
Q

Family planning factors?

A

Donation, cessation, influenced by ethical & religious beliefs, treatment and financial availability

17
Q

Fetal sign of cystic fibrosis?

A

Meconium pseudocyst

18
Q

DNA sources for testing?

A

trophoblast (early placenta - CVS), fetal cells (fibroblasts in amniotic fluid)

19
Q

Advantages of CVS?

A

early, direct DNA extraction

20
Q

Disadvantages of CVS

A

difficult, maternal cell contamination risk (1%)

21
Q

Advantages of Amniocentesis?

A

easy

22
Q

Disadvantages of amniocentesis?

A

later in pregnancy (14wk), longer processing time

23
Q

Benefit of NIPT?

A

no miscarriage risk, simpler, earlier result