The nurse is assessing the patient who has liver disease for jaundice. Which of these assessment findings is indicative of true jaundice?

Carpal tunnel syndrome is a compressive neuropathy of the median nerve beneath the transverse carpal ligament. Chronic entrapment leads to thenar atrophy and significant nocturnal paresthesia in the lateral digits. Diagnosis relies on provocative maneuvers that increase intracarpal pressure, such as Phalen's or Tinel's tests.

A. Paralysis: Paralysis refers to the complete loss of muscle function and motor control, typically due to severe nerve or spinal cord injury. While advanced nerve compression causes weakness, tingling and pain are sensory irritations. These symptoms indicate nerve compromise rather than a total motor deficit or plegia.

B. a stroke: A cerebrovascular accident typically presents with unilateral facial drooping, hemiparesis, or speech deficits rather than localized wrist pain. Symptoms are central in origin rather than peripheral. Wrist flexion maneuvers would not trigger symptoms specific to a cortical or subcortical infarct.

C. a fractured wrist: Acute fractures present with focal bone tenderness, edema, and often visible deformity following trauma. While wrist flexion would be painful, it would not typically cause the classic "tingling" (paresthesia) associated with nerve entrapment. Radiographic imaging is required to confirm a cortical break.

D. carpal tunnel syndrome: The description of pain and tingling triggered by sustained wrist flexion (Phalen's maneuver) is a hallmark sign of this condition. The maneuver compresses the median nerve within the narrow carpal canal. This specifically accounts for the sensory distribution of symptoms described by the patient.

Muscle tone represents the tonic contraction of fibers that maintains posture and resists stretch. It is evaluated by moving a limb through its passive range of motion while assessing for hypotonia, spasticity, or rigidity. This physical finding helps localize lesions to either the corticospinal or extrapyramidal pathways.

A. Use a goniometer: A goniometer is an instrument used to measure the specific degree of joint range of motion, such as how many degrees a knee can flex. It quantifies joint mobility rather than the quality of muscle resistance or tone. It is a tool for measuring distance, not tension.

B. Feel the resistance to passive stretch: By moving the patient's relaxed limb, the nurse can feel the natural "give" or resistance of the muscles. This is the standard clinical method for assessing tone. It allows for the identification of abnormal resistance like spasticity or lead-pipe rigidity.

C. Determine muscle temperature: Skin or muscle temperature is assessed to check for inflammation, infection, or vascular perfusion. While a warm muscle may indicate an underlying inflammatory process, temperature does not correlate with neurological muscle tone. It is an integumentary or vascular finding.

D. Squeeze the muscle: Palpating or squeezing a muscle belly can identify tenderness, masses, or atrophy, but it does not evaluate how the muscle responds to movement. Tone is a dynamic property of the nervous system. Squeezing assesses tissue consistency rather than neurological tension.