An adult male who is admitted to the mental health clinic is alert and oriented to person, place, time, and situation. His affect is blunted, his mood dysphoric, and the nurse identifies his responses as tangential with a paranoid theme when he states, “I have a chip inside my head that is speaking to me.” Based on these assessment findings, which nursing problem is best to include in this client’s initial plan of care?

Choice A reason: Imbalanced nutrition is unrelated to 150 mL residual urine, which indicates incomplete bladder emptying, often from detrusor dysfunction or obstruction. Nutrition affects overall health but does not cause retention. Residual urine increases infection risk due to stasis, making nutrition an irrelevant nursing problem for this urinary issue.

Choice B reason: Deficient fluid volume suggests dehydration, reducing urine output, not causing high residual volumes. Residual urine (150 mL) indicates retention from impaired bladder emptying, not fluid deficit. Hydration prevents stasis, but infection risk from retained urine is more immediate, as bacteria proliferate in stagnant urine.

Choice C reason: Residual urine of 150 mL signifies incomplete bladder emptying, often from obstruction or neurogenic bladder, leading to urinary stasis. This fosters bacterial growth, increasing urinary tract infection (UTI) risk. Including “risk for infection” addresses this pathophysiological concern, guiding interventions like catheterization to reduce infection likelihood.

Choice D reason: Urinary incontinence involves involuntary leakage, not retention, where the bladder fails to empty, as seen with 150 mL residual urine. Retention results from outflow obstruction or weak detrusor, distinct from incontinence’s loss of control, making this nursing problem inappropriate for the client’s condition.

Choice A reason: Blood pressure of 142/88 mm Hg indicates mild hypertension but does not directly affect pulse oximetry, which measures arterial oxygen saturation via hemoglobin light absorption. Hypertension does not typically cause hypoxemia (91% SpO₂). Edema is more likely, as it disrupts sensor accuracy, leading to false low readings.

Choice B reason: 2+ edema in fingers and hands impairs pulse oximeter accuracy, as fluid in tissues scatters light, reducing the sensor’s ability to detect arterial hemoglobin saturation. This causes falsely low SpO₂ readings (91%), common in edema from heart failure, making it the primary contributor to the inaccurate measurement.

Choice C reason: A radial pulse volume of 3+ indicates strong arterial flow, supporting accurate pulse oximetry by ensuring perfusion. This does not explain a low SpO₂ of 91%, as strong pulses enhance sensor reliability. Edema’s interference with light transmission is more likely to cause the reduced reading.

Choice D reason: Capillary refill of 2 seconds is normal, indicating adequate perfusion. This does not contribute to a low SpO₂ (91%), as pulse oximetry measures arterial flow, not capillary dynamics. Edema disrupts light transmission, causing inaccurate readings, making it the most likely cause of the observed saturation.