Obstructive sleep apnoea may result in all of thefollowing except
**Core Concept**
Obstructive sleep apnea (OSA) is a sleep disorder characterized by repeated episodes of upper airway obstruction during sleep, leading to fragmented sleep and reduced oxygen levels. The pathophysiology involves the collapse of the pharyngeal airway due to a combination of factors, including obesity, reduced lung volume, and increased upper airway resistance.
**Why the Correct Answer is Right**
The correct answer is related to the consequences of OSA. Obstructive sleep apnea is known to increase the risk of cardiovascular disease, including hypertension, myocardial infarction, and stroke. The recurrent hypoxia and sleep fragmentation lead to inflammation, oxidative stress, and endothelial dysfunction, which contribute to the development of atherosclerosis. Additionally, OSA has been linked to an increased risk of type 2 diabetes mellitus, cognitive impairment, and mood disorders.
**Why Each Wrong Option is Incorrect**
**Option A:** Not applicable, as this option is not listed.
**Option B:** Incorrect - OSA is associated with an increased risk of hypertension, which is a major risk factor for cardiovascular disease.
**Option C:** Incorrect - OSA has been linked to an increased risk of type 2 diabetes mellitus, likely due to the recurrent hypoxia and sleep fragmentation.
**Option D:** Incorrect - OSA is associated with an increased risk of cognitive impairment, including attention deficits and memory problems.
**Clinical Pearl / High-Yield Fact**
The Berlin Questionnaire is a useful screening tool for OSA, which asks three questions: Do you snore loudly? Do you often feel tired or sleepy during the day? Do you wake up with shortness of breath?
**Correct Answer: D. OSA is not directly associated with an increased risk of osteoporosis.**