cystic fibrosis Flashcards
cystic fibrosis
- A respiratory disorder from inheriting a mutated gene.
- Characterized by mucus glands that secrete an increase in the quantity of thick, tenacious mucus, which leads to mechanical obstruction of organs:
pancreas, lungs, liver, small - Autonomic nervous system abnormalities.
what is increased
- An increase in organic and enzymatic constituents in the saliva
- An increase in the sodium and chloride content of sweat
risk factors
Both biological parents carry the recessive trait for cystic fibrosis.
Caucasian ethnicity
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clinical findings
earliest indiction of CF
- Medical history of respiratory infections, growth failure
- Meconium ileus at birth manifested as distention of the abdomen, vomiting, and inability to pass stool.
- Meconium ileus is the earliest indication of cystic fibrosis in the newborn.
early manifestations respiraotry
- Wheezing, rhonchi
- Dry, nonproductive cough
- Increased involvement
- Dyspnea
- Paroxysmal cough
- Obstructive emphysema and atelectasis on chest x-ray
advanced symptoms
- Cyanosis
- Barrel-shaped chest
- Clubbing of fingers and toes
- Multiple episodes of bronchitis or bronchopneumonia
gastro findings
- Large, frothy, bulky, greasy, foul-smelling stools (steatorrhea)
- Voracious appetite (early)
- Loss of appetite (late)
- Failure to gain weight or weight loss
- Delayed growth patterns
- Distended abdomen
- Thin arms and legs
- Deficiency of fat-soluble vitamins
- Anemia
integumentary findings
Sweat, tears, and saliva have an excessively high content of sodium and chloride.
endocrine findings
- Viscous cervical mucus
- Decreased or absent sperm
blood specimen
Nutritional panel to detect a deficiency of fat-soluble vitamins (A, D, and E).
sputum culture
For detection of infection: Pseudomonas aeruginosa, Haemophilus influenzae, Burkholderia cepacia, Staphlococcus aureus, Escherichia coli, or Klebsiella pneumoniae
diagnsotic tests
- DNA testing: To isolate the mutation
- Pulmonary function tests (PFTs)
- Chest x-ray: Can indicate diffuse atelectasis and obstructive emphysema
- Abdominal x-ray: Detect meconium ileus
Stool analysis
- For presence of fat and enzymes
- 72 hr sample with documented food intake
sweat chloride test
- The child must be well hydrated.
- A device uses an electrical current to stimulate sweat production.
- Collection of sweat from two different sites for adequate sample
- Expected reference range is chloride content less than 40 mEq/L and sodium content less than 70 mEq/L.
sweat chloride numbers
Chloride greater than 40 mEq/L for infants less than 3 months of age
greater than 60 mEq/L for all others; sodium greater than 90 mEq/L
start nursing care
- Assess lung sounds and respiratory status.
- Vital signs with oxygen saturation.
- Obtain IV access.
- Use of a peripherally inserted central catheter allows for home IV antibiotic therapy.
- Obtain sputum for culture and sensitivity.