jasmin
Forum Junior
Topics: 6
Posts: 39
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please explain
43. A 5-week-old boy is brought to the physician because of vomiting for 3 days. Switching from a cow's milk-based formula to a soy-based formula and one bottle of an electrolyte solution has not decreased his vomiting. His mother says that there is no yellow color to the vomitus, but it is forceful and occurs immediately after he has had 1 to 2 ounces of liquid. He appears to vomit more liquid than he drank. He has one mustard-colored seedy stool daily. Examination shows no abnormalities. Which of the following is the most likely explanation for his vomiting?
A
) Duodenal atresia
B
) Gastroesophageal reflux
C
) Hypertrophic pyloric stenosis
D
) Lactose intolerance
E
) Protein malabsorption
F
) Rotavirus infection
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| jasmin
Forum Junior
Topics: 6
Posts: 39
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18. A previously healthy 3-month-old girl is brought to the emergency department because of a 3-day history of grunting and increasing difficulty breathing. She appears ill. Her temperature is 36.7 C (98 F), pulse is 160/min, and respirations are 76/min. Examination shows grunting, nasal flaring, and marked intercostal retractions. Bronchial breath sounds and occasional bilateral crackles are heard on auscultation. Serum studies show:
Ca2+ 5.6 mg/dL
Phosphorus 11 mg/dL
Alkaline phosphatase 250 U/L
Capillary blood gas analysis on 100% oxygen:
pH 7.36
PCO2 38 mm Hg
PO2 46 mm Hg
An x-ray film of the chest shows bilateral, diffuse interstitial infiltrates and absence of the thymic shadow. Bronchoalveolar lavage is positive for numerous Pneumocystis carinii. Which of the following is the most likely mechanism of these findings?
A ) Adenosine deaminase deficiency
B ) Consumption of complement
C ) Defective opsonization
D ) Destruction of CD4+ T lymphocytes
E ) Developmental arrest of maturation of B lymphocytes
F ) Dysmorphogenesis of the third and fourth pharyngeal pouches
G ) Impaired chemotaxis
H ) Impaired phagocytic oxidative metabolism
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| dr9576
Forum Newbie
Topics: 4
Posts: 36
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C
D
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| godfather1212m
Forum Junior
Topics: 15
Posts: 71
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I think it is
C
F= DiGorge Syndrome
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| Ivonne
Going for step 3/99
Topics: 50
Posts: 1,395
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C
F
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| smalley
Forum Elite
Topics: 42
Posts: 239
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why not a- duodenal atresia?
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| nyimalay
Forum Elite
Topics: 9
Posts: 277
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Because
1. no yellow color to vomitus ( means it doesn't contain bile)
2. it occur immediately after feed.
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