A nurse assesses patients on the medical-surgical unit. Which patient is at greatest risk for development of obstructive sleep apnea?

Choice A rationale: While age and type 2 diabetes are associated risk factors for obstructive sleep apnea (OSA), they are not the most significant predictors. Advanced age can lead to increased soft tissue laxity, but obesity remains the leading independent risk factor across all age groups. Choice B rationale: Obesity is the strongest risk factor for the development of OSA. Excess weight, particularly around the neck (thick neck circumference), increases the amount of soft tissue in the upper airway. This tissue can collapse during sleep, leading to frequent episodes of partial or complete airway obstruction. Choice C rationale: Pregnancy, especially in the third trimester, can increase the risk of sleep-disordered breathing due to weight gain and hormonal changes affecting the upper airway mucosa. However, this is often transient and carries a lower statistical risk compared to chronic, significant obesity in a middle-aged adult. Choice D rationale: Gastroesophageal reflux disease (GERD) is frequently comorbid with OSA, as the negative intrathoracic pressure generated during obstructive events can pull gastric contents into the esophagus. While related, GERD is more often a consequence or associated finding rather than a primary cause of the apnea itself.