Introduction
Overlap with mental health and neuro Depression and insomnia co-travel; OSA worsens mood and HTN—items may require treating sleep apnea before blaming mood alone for fatigue. WHNP may include pregnancy-related sleep disruption and OSA in pregnancy (higher-risk contexts)—referral thresholds may differ from non-pregnant adults in the stem. Expect who needs sleep study, who should try CBT-I first, CPAP adherence barriers, and when hypnotics are unsafe. For NP certification preparation (United States), questions rarely announce the topic in the first sentence. They hide it inside vitals, labs, and a short story. Your job is to name the clinical problem, justify why it matters now, and select the safest next step for the role you are given—before you let distractors pull you toward busywork or out-of-scope heroics. When two answers feel partly right, pick the one that closes risk first and matches your license in the stem. On the exam, writers often pair stable-sounding options with unstable data—notice the mismatch before you commit. If the stem names a license or role, reread that line; scope errors are classic trap answers even when...