The nurse includes the problem of “Risk for infection” in the plan of care for a client with myelosuppression. Which laboratory value provides the greatest support for this nursing problem?

Reference Range: Hemoglobin (Hgb) [14 to 18 g/dL (8.69 to 11.17 mmol/L)], Hematocrit (Hct) [42% to 52% (0.42 to 0.52 volume fraction)], Red Blood Cell Count (RBC) [4.2 to 5.4 x 10⁶/µL (4.2 to 5.4 x 10¹²/L)], White Blood Cell (WBC) [5,000 to 10,000/mm³ (5 to 10 x 10⁹/L)].

Choice A reason: Reviewing vascular disease history provides context but does not confirm perfusion status. An absent DP pulse may indicate arterial occlusion, risking ischemia. Doppler assessment directly evaluates blood flow, detecting patency, critical for guiding interventions to ensure limb perfusion, making history review secondary.

Choice B reason: Marking an auscultated DP pulse is incorrect, as pulses are palpated or Doppler-assessed, not auscultated. Auscultation applies to heart or lungs. Doppler confirms arterial flow, addressing absent pulse’s potential occlusion, making this inaccurate compared to the precise Doppler technique.

Choice C reason: Capillary refill evaluates perfusion but is less specific than Doppler, which confirms arterial flow. Prolonged refill may indicate ischemia, but absent DP pulse suggests arterial compromise. Doppler acoustically detects flow, diagnosing critical limb ischemia, making it the priority over indirect perfusion measures.

Choice D reason: Using Doppler to assess DP pulse is critical, as an absent pulse may indicate occlusion from peripheral arterial disease, risking ischemia. Doppler detects blood flow, confirming patency or obstruction, guiding urgent interventions like angiography, ensuring limb viability by addressing vascular compromise directly.

Choice A reason: Monitoring airway and tongue during a tonic-clonic seizure is critical, as muscle contractions can obstruct the airway or cause tongue biting, leading to hypoxia. Ensuring airway patency prevents respiratory compromise, a life-threatening issue, addressing the physiological priority of oxygenation during seizure-induced neuronal hyperactivity.

Choice B reason: Darkening the room by closing blinds is not a priority during a seizure. Reducing stimuli may help photosensitive epilepsy, but active seizures require airway and safety management. Uncontrolled movements from neuronal discharges pose immediate risks, making airway monitoring and injury prevention more critical than environmental adjustments.

Choice C reason: Placing pillows inside side rails protects the child from trauma during a seizure, as tonic-clonic movements from cortical hyperexcitability risk fractures or head injuries. Padding reduces impact injuries, addressing the physiological need for safety during clonic jerking, ensuring protection against environmental hazards in the seizure setting.

Choice D reason: Asking the mother to release the child prevents harm, as restraint during a seizure can cause fractures or muscle strain by resisting neuronal-driven movements. Allowing free movement in a safe environment reduces injury risk, prioritizing physical safety and preventing complications from external resistance during the seizure.

Choice E reason: Administering an anticonvulsant requires a prescription and is not immediate during an active seizure. While drugs like lorazepam treat prolonged seizures, the nurse prioritizes airway and safety. Only trained personnel with orders can administer medications, making this less urgent than ensuring airway patency and injury prevention.