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A 1-month-old infant is seen in a clinic and is diagnosed with developmental dysplasia of the hip (DDH). On assessment, the nurse understands that which finding would be noted in this condition?

A.

Limited range of motion in the affected hip

B.

Symmetry of the gluteal skinfolds when the infant is placed prone and the legs are extended

C.

Negative Barlow test

D.

Unaffected leg is pale and cool

Answer and Explanation

The Correct Answer is A

A. Developmental dysplasia of the hip (DDH) often presents with a limited range of motion in the affected hip, particularly in abduction.

B. Asymmetry of the gluteal skinfolds, not symmetry, is a typical finding in DDH. This asymmetry is due to the improper alignment of the hip joint.

C. A positive Barlow test, where the hip can be dislocated by adduction and posterior pressure, is indicative of DDH. A negative Barlow test would suggest the absence of DDH.

D. A pale and cool leg is not a common finding in DDH. This would be more indicative of a circulatory problem, not hip dysplasia.


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Related Questions

Correct Answer is ["23"]

Explanation

To calculate the IV fluid rate, first, convert the infant's weight from pounds and ounces to kilograms. There are 2.2 pounds in one kilogram. The infant weighs 16 pounds and 8 ounces, which is 16.5 pounds or approximately 7.5 kilograms when converted (16.5 pounds ÷ 2.2 pounds per kilogram). Next, multiply the infant's weight in kilograms by the prescribed amount of IV fluid, which is 6 mL/kg. This results in 45 mL (7.5 kg × 6 mL/kg). Since the fluid is to be infused over 2 hours, divide the total volume of 45 mL by 2 hours to find the rate per hour. The IV pump should be set to deliver approximately 22.5 mL/hr. After rounding to the nearest whole number, the IV pump should be set to deliver 23 mL/hr.

Correct Answer is B

Explanation

A. The Moro reflex, where the infant cries and extends both arms and legs in response to a loud noise, typically disappears by 4-6 months of age and would not be expected at 8 months.

B. The Babinski reflex, where the toes fan upward and out when the outer edge of the sole is stroked, is normal in infants and usually disappears by 12-24 months of age.

C. The tonic neck reflex (fencing reflex) typically disappears around 4-6 months of age, so it would not be expected in an 8-month-old.

D. The rooting reflex, where the infant turns their head toward the side of stimulation when the cheek is stroked, typically disappears by 3-4 months of age.

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