CMN 568 Unit 4 exam (2025 updated)
QUESTIONS AND ANSWERS (DETAILED &
ELABORATED) fully solved
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When does malrotation at about the 10th week of gestation
occur?
a congenital abnormality that occurs during the
embryonic phase of development when the midgut
What is a malrotation?
retracts into the abdominal cavity. The midgut rotates
counterclockwise
When do infants typically at 3 weeks of life
become symptomatic with
a malrotation?
What is the classic sign of bilious vomitting
a malrotation?
How is a malrotation upper GI study
diagnosed?
corkscrew appearance with barium swallow; Signs of
What are some radiologic
obstruction (air-fluid levels) may be present, along
findings that are indicative
with an abnormal gas pattern at the stomach and
of a malrotation?
duodenum.
results from hypertrophy of the pyloric sphincter
What is pyloric stenosis? (muscle in the distal stomach), which leads to poor
gastric emptying into the duodenum.
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When does pyloric At 2-4 weeks of age
stenosis usually present?
vomiting that becomes projectile; typically occurs
immediately after feeding, is nonbilious, and the infant
What are the symptoms of
is hungry after vomiting. The parents may also report
pyloric stenosis?
constipation, excessive crying and weight loss, or
failure to gain weight
What can delay symptoms breastfeeding
of pyloric stenosis?
What is pyloric stenosis reflux or formula intolerance
usually mistaken for?
What is the hallmark an olive-shaped mass in RUQ
finding of pyloric
stenosis?
What are typical lab and hypochloremia, metabolic alkalosis, Hypokalemia.
radiologic findings of a KUB imaging reveals a dilated gastric silhouette. An
baby with pyloric ultrasound typically reveals a thickened and
stenosis? elongated pylorus, measuring greater than 4 mm.
involves the invagination of a section of the intestine
What is intussusception? into itself. The most frequent site is at the terminal
ileum.
What is often a A recent viral illness, mesenteric lymphadenitis,
predisposing factor of Henoch-Schonlein purpura, and cystic fibrosis
intussusception?
What is the typical age of 6 to 18 months, with an average age of 7 to 8 months
onset of idiopathic
intussusception?
If intussusception occurs meckel's diverticulum or polyps
beyond 36 mths, it is
typically due to a physical
abnormality such as?
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Is intussusception more boys
common in girls or boys?
colicky abdominal pain, recent viral illness with some
vomiting and perhaps diarrhea. The child begins to
have episodes of colicky abdominal pain, draws up
What is the classic the knees or stiffens the legs for a brief period, and
presentation of then becomes quiet for several minutes. The series of
intussusception? events recurs, typically every 15 to 20 minutes, and
continues for several hours. The child may have blood
in his or her stools, prompting the "currant jelly"
descriptor
What is typically present A sausage shaped mass typically in the right lower
on palpation with quad
intussusception?
What interventions should consult a pediatric surgeon. Initiate intravenous
be considered when hydration and order an air-contrast enema. Consider
intussusception is an abdominal ultrasound as well
suspected?
What will often diagnose an air contrast enema
and cure intussusception?
What are contraindication perforation, shock, and peritonitits
s to an air contrast
enema?
abd pain that starts in the periumbilical area and
What is usually classic hx
migrates to the right lower quadrant, along with low-
of appendicitis?
grade fever, a small amount of emesis, and anorexia
What exacerbates the movement and the child frequently walks stooped
pain associated with over
appendicitis?
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