A nursing instructor is preparing for a class discussion on spinal muscular atrophy (SMA). When describing type 2 SMA, which of the following would the instructor include? Select all answers that apply.

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Quizplus · Accepted Answer

Type 2 SMA typically manifests after 6 months of age, so onset before 6 months (A) is more characteristic of Type 1 SMA. Type 2 SMA is characterized by muscle weakness that is more pronounced in the proximal muscles, such as the shoulders and hips (B), and it is a slowly progressing condition (D), unlike Type 1 SMA, which progresses more rapidly. Difficulty with swallowing (C) is more commonly associated with Type 1 SMA. SMA, including Type 2, is a genetic disorder with autosomal recessive inheritance (E), meaning that a child must inherit one copy of the defective gene from each parent to be affected.

A Nursing Instructor Is Preparing for a Class Discussion on Spinal