A 34-year-old pregnant woman at 30 weeks gestation reports lower back discomfort, especially when standing. She denies injury, and the pain improves with rest. Which assessment finding best explains her symptoms?
Increased lumbar lordosis from the shift in the center of gravity
Decreased mobility of the sacroiliac joints
Increased thoracic kyphosis due to breast enlargement
Muscle atrophy of the paraspinal muscles from reduced activity
The Correct Answer is A
During pregnancy, the enlarging uterus displaces the center of gravity anteriorly, necessitating a compensatory lumbar lordosis. This postural shift increases the mechanical strain on the paraspinal muscles and lower intervertebral discs. Hormonal changes, specifically the release of relaxin, further contribute to ligamentous laxity and joint instability.
A. Increased lumbar lordosis from the shift in the center of gravity: As the fetal weight increases, the mother leans backward to maintain balance, exaggerating the inward curve of the lower spine. This compensatory posture causes chronic muscle tension and lower back pain. It is the most common musculoskeletal finding in the third trimester.
B. Decreased mobility of the sacroiliac joints: Pregnancy actually causes an increase in sacroiliac joint mobility due to the hormone relaxin. This increased laxity is necessary for the widening of the birth canal during delivery. Decreased mobility is not a typical physiological finding in pregnancy-related back pain.
C. Increased thoracic kyphosis due to breast enlargement: While breast enlargement can slightly alter upper body posture, it does not typically cause the primary lower back discomfort reported by the patient. Kyphosis affects the upper back (hunchback appearance), whereas the patient's symptoms are localized to the lower back.
D. Muscle atrophy of the paraspinal muscles from reduced activity: Most pregnant women experience muscle strain from the increased load rather than atrophy. While activity may be reduced, the body must work harder to support the extra weight. Atrophy would involve a loss of muscle mass, which is not a standard finding in healthy pregnancy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The clinical sequence for abdominal assessment is modified to inspection, auscultation, percussion, and palpation. This specific order prevents the mechanical stimulation of the gastrointestinal tract, which can induce pseudo-borborygmi. Maintaining this sequence ensures that bowel sounds are representative of the patient's baseline physiological state.
A. Percussion for tones in all four quadrants: Percussion involves tapping the abdominal wall to elicit sounds, which can physically disturb the bowel and alter motility. It should only be performed after auscultation has been completed. Performing it next would violate the established diagnostic sequence for an abdominal exam.
B. Auscultation of the bowel sounds in all four quadrants: This is the mandatory second step in abdominal assessment following inspection. It allows the nurse to listen to natural peristaltic activity before the abdomen is palpated or percussed. This ensures the most accurate representation of the patient's current bowel activity.
C. Deep palpation for masses or aortic pulsation: Deep palpation is the final step of the abdominal examination because it is the most invasive and potentially painful. It can cause significant guarding or alter the sounds heard during auscultation. It must never precede auscultation or percussion in a standard assessment.
D. Light palpation for tenderness and muscle tone: While less invasive than deep palpation, light palpation still involves physical contact that can change the frequency of bowel sounds. It is performed after auscultation and percussion have provided enough clinical data. It serves to identify superficial masses and areas of discomfort.
Correct Answer is C
Explanation
Vertigo is a subjective sensation of illusory motion resulting from an imbalance in the vestibular system. It is often classified as peripheral, involving the semicircular canals, or central, involving the brainstem. The sensation of the environment spinning differentiates it from simple disequilibrium and is often triggered by changes in head position.
A. Tinnitus: This term refers to the perception of sound, such as ringing, buzzing, or hissing, in the absence of an external acoustic stimulus. While it often occurs alongside vestibular issues, it describes an auditory sensation rather than the perception of spinning or movement of the room.
B. Dizziness: Dizziness is a non-specific, umbrella term that can include lightheadedness, faintness, or unsteady feelings. While patients often use this word, the nurse must clarify the exact nature of the sensation. It is less specific than the term required to describe a spinning sensation.
C. Vertigo: This is the precise medical term used to document the sensation that the room or the patient is spinning. It indicates a vestibular or neurological origin for the patient's complaint. Documentation of vertigo helps clinicians narrow down the differential diagnosis to inner ear or cerebellar issues.
D. Otalgia: Otalgia is the medical term for ear pain, which can be primary (originating in the ear) or referred (from the jaw or throat). While ear pathology can cause vertigo, otalgia itself does not describe the sensation of motion. It is a sensory report of discomfort, not imbalance.
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