BTSC Staff Nurse 31 July-2025
Medical Surgical Nursing
Easy
Which is a motor speech disorder caused by muscle weakness or paralysis, affecting the clarity and smoothness of speech?
Appeared in: BTSC Staff Nurse 31 July-2025
Explanation
- Dysarthria is a motor speech disorder caused by neuromuscular impairment, such as weakness, paralysis, or incoordination of the speech musculature.
- It directly affects the articulation of speech, leading to characteristics like slurring, slow rate, and imprecise consonant production, which matches the question's description.
- Unlike other disorders, the core issue in dysarthria is the physical inability to produce clear speech due to muscle control problems, not a language or planning deficit.
- Common causes include stroke, traumatic brain injury, cerebral palsy, Parkinson's disease, and amyotrophic lateral sclerosis (ALS).
Why Other Options Were Wrong
- Option B: Apraxia of speech is a motor speech disorder, but it is not caused by muscle weakness or paralysis. It is a neurological disorder affecting the brain's ability to plan and sequence the movements necessary for speech.
- Option C: Agnosia is not a speech disorder. It is a disorder of recognition and interpretation, where the brain cannot make sense of information received through the senses (e.g., inability to recognize a familiar object by sight).
- Option D: Dysphagia is a swallowing disorder, not a speech disorder. While the muscles involved in swallowing and speech can overlap, dysphagia specifically refers to difficulty or discomfort in swallowing.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Neurological Communication Disorders as background academic context rather than a clinical decision trigger.
- A key nursing role for a patient with dysarthria is to facilitate effective communication by reducing environmental noise, being patient, using communication aids (like whiteboards or picture charts), and speaking in simple sentences.
- It is critical to assess for concurrent dysphagia, as the muscle weakness affecting speech can also impair swallowing, placing the patient at high risk for aspiration. The nurse should monitor for coughing during meals, a 'wet' voice quality, and signs of respiratory distress.
- What if? If the patient's speech is clear but the words are jumbled, nonsensical, or they have trouble finding words, the primary issue is more likely aphasia (a language disorder) rather than dysarthria. The nursing approach would then shift to addressing language comprehension and expression deficits.
How to Approach the Question
- First, analyze the question stem to identify the key defining features: 1) it's a motor speech disorder, 2) it's caused by muscle weakness/paralysis, and 3) it affects clarity/smoothness.
- Next, define each option based on your knowledge.
- Dysarthria: A speech disorder from muscle weakness.
- Apraxia: A speech disorder from impaired motor planning (not weakness).
- Agnosia: A recognition/perception disorder (not speech).
- Dysphagia: A swallowing disorder (not speech).
Concept Tested & Keywords
- Concept Tested: Neurological Communication Disorders
- Stem keywords: motor speech disorder, muscle weakness, paralysis, clarity of speech, smoothness of speech
- Lead-in keywords: Which is
- Negative lead-in flag: false
Question ID
QPAJ0_UZqtEelblrWUOKTA
Reference Book
E6 Medicine Davidson Principles Practice 24e p. 1107-1109
E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 377-379
E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 1556-1559
Practise the full BTSC Staff Nurse 31 July-2025
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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