A nursing instructor is preparing for a class discussion on spinal muscular atrophy (SMA). When describing type 2 SMA, which information would the instructor include? Select all answers that apply
A) Onset before 6 months of age
B) Weakness most severe in shoulders and hips
C) Difficulty with swallowing
D) Slowly progressing condition
E) Genetic disease with autosomal recessive inheritance
Ans: B, D, E
Any type of spinal muscular atrophy is a genetic motor neuron disease due to autosomal recessive inheritance. Type 2 SMA usually occurs between 6 and 18 months of age, with weakness that is most severe in the shoulders, hips, thighs, and upper back. It is slower in progression than type 1. Survival into adulthood is common if respiratory status is maintained appropriately. Type 1 SMA occurs before birth to 6 months of age and the child usually has difficulty swallowing, sucking, and breathing.
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