NURS 629 Exam 4 Questions with 100% Correct Answers | Verified | Updated 2024/2025
What is physiological jaundice?
-occurs when baby accumulates bilirubin
-secondary to immature liver in newborns
-common first 2-4 days of life and resolves by 2 weeks
What level is conjugated hyperbilirubin...
NURS 629 Exam 4 Questions with 100%
Correct Answers | Verified | Updated
2024/2025
What is physiological jaundice?
-occurs when baby accumulates bilirubin
-secondary to immature liver in newborns
-common first 2-4 days of life and resolves by 2 weeks
What level is conjugated hyperbilirubinemia?
serum conjugated bilirubin concentration greater than 1 mg/dL if the total bilirubin is less than 5.0
mg/dL or more than 20% of the total bilirubin if the the total bilirubin is greater than 5 mg/dL (p. 862
AAP book)
What is breastfeeding jaundice?
-due to poor intake that causes lack of stools and urine output
-common in first week and resolves once milk comes in and infant is feeding well-more stools and
urinary output
-peaks around 2-3 weeks
How do you diagnose jaundice?
-dx with a bili level of 5 mg/dL
-12 mg/dL threshold for all newborns having jaundiced appearance
-direct/indirect bili levels
-CBC
-reticulocyte count
How do you treat jaundice?
increased intake
indirect sunlight
phototherapy
IV fluids
What are other causes of jaundice?
abnormal blood cell shapes (like sickle cell)
Rh incompatibility
cephalohematoma
polycythemia (increased RBCs, SGA infants, twins)
infection
specific enzyme disorders
What is biliary atresia?
-life-threatening condition causing a blockage of bile ducts inside or outside of liver
-leads to build-up of toxins (like bilirubin)
-malabsorption of fat-soluble vitamins A,D,E,K
-scaring of the liver, loss of tissue, cirrhosis
-not inherited
What are the two types of biliary atresia?
, fetal- noted in womb (other defects like heart, spleed, intestines)
perinatal- appears 2-4 weeks after birth
What causes biliary atresia?
-infection after birth (cytomegalovirus or rotavirus)
-autoimmune disorder
-developmental issue in womb
-exposure to toxic substances
What are symptoms of biliary atresia?
jaundice
dark urine
light to white stools
poor wt gain and growth
How do you diagnose biliary atresia?
any infant with jaundice present 2-3 weeks after birth
-direct and indirect serum bilirubin
-LFTs
-abdominal x-ray
-abdominal US
-liver bx
How do you treat biliary atresia?
surgery (Kasai procedure)
liver transplant
What are risk factors for dehydration?
GI virus
vomiting/diarrhea
What are s/sx of dehydration?
sunken anterior fontanel
tachycardia and decrease cap refill
decrease urine output is sensitive but nonspecific
increase in urine specific gravity
decrease BP- late finding=more than 10% fluid loss
How do you treat dehydration?
if minimal, mild, moderate- oral rehydration
if severe (drowsy, cold extremities, lethargic, sunken/dry eyes, very depressed anterior fontanel, no
tears, dry mouth/tongue, very decreased skin turgor, rapid/sometimes impalpable pulse,
decreased/unrecordable pulse, deep/rapid respiratory rate, markedly reduced urine output) - IV fluids
What is emesis?
vomiting=symptom
must distinguish from regurgitation in infants
integrated response to noxious stimuli-coordinated by CNS
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