Author Question: After teaching a class of nursing students about muscular dystrophy, the instructor determines that ... (Read 106 times)

kaid0807 · **on:** Jun 27, 2018

After teaching a class of nursing students about muscular dystrophy, the instructor determines that the teaching was successful when the students identify which type of muscular dystrophy

as demonstrating an X-linked recessive pattern of inheritance?
A) Limb-girdle
B) Myotonic
C) Distal
D) Duchenne

Question 2

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.

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

chinwesucks · **Reply #1 on:** Jun 27, 2018

Answer to Question 1

D
Feedback:
Duchenne muscular dystrophy follows an X-linked recessive inheritance pattern. Limb-girdle muscular dystrophy is believed to be autosomal or X-linked inherited. Myotonic and distal muscular dystrophy follow an autosomal dominant inheritance pattern.

Answer to Question 2

B, D, E
Feedback:
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.