A patient presents with sudden-onset, severe eye pain, headache, nausea, and vomiting. On examination, the affected eye appears red, with a steamy cornea and mid-dilated, non-reactive pupil. Which of the following conditions is most likely responsible for this presentation?

Correct Answer: A

Rationale: The presentation described is characteristic of acute angle-closure glaucoma. This condition typically presents with sudden-onset severe eye pain, headache, nausea, and vomiting. On examination, the affected eye may appear red due to conjunctival injection, and there may be a steamy cornea due to corneal edema. The mid-dilated, non-reactive pupil is a key finding in angle-closure glaucoma, as the iris bombe (forward movement of the peripheral iris) blocks the drainage angle, leading to increased intraocular pressure. If left untreated, acute angle-closure glaucoma can result in irreversible vision loss. Immediate intervention is crucial to lower the intraocular pressure and prevent further damage to the optic nerve. Prompt referral to an ophthalmologist for definitive treatment is necessary in cases of suspected acute angle-closure glaucoma.

Correct Answer: B

Rationale: Periodontitis is the dental condition characterized by inflammation of the gingival tissues surrounding the teeth. It is typically caused by poor oral hygiene practices, leading to plaque buildup and eventually gum disease. If left untreated, periodontitis can cause serious damage to the gum tissue and the underlying bones supporting the teeth, which can eventually result in tooth loss. Regular dental check-ups, proper oral hygiene habits, and professional cleanings are important for preventing and managing periodontitis.

Correct Answer: B

Rationale: Gingivitis is a dental condition characterized by inflammation and bleeding of the gingival tissues. It is often caused by poor oral hygiene leading to the accumulation of bacterial plaque along the gumline. The plaque contains bacteria that release toxins, leading to inflammation of the gums. If left untreated, gingivitis can progress to periodontitis, a more serious condition that affects the supporting structures of the teeth. Regular dental cleanings, proper oral hygiene practices, and professional treatment can help manage and prevent gingivitis.

Correct Answer: C

Rationale: Bruxism is the dental condition characterized by the involuntary grinding or clenching of teeth, often occurring during sleep. This habitual behavior can lead to tooth wear, muscle pain, headaches, and temporomandibular joint dysfunction. Dental caries (choice A) refers to tooth decay, while attrition (choice B) specifically refers to the wearing down of teeth due to forces like chewing. Periodontitis (choice D) is a condition involving inflammation and infection of the gums and supporting structures of the teeth. Among the choices provided, bruxism is the most fitting description for the condition characterized by tooth grinding and clenching.

Correct Answer: C

Rationale: The appropriate ratio of chest compressions to rescue breaths for adult CPR is 30 compressions to 2 breaths. This means that after every 30 chest compressions, two rescue breaths should be given. This ratio helps in maintaining oxygen circulation in the body while also ensuring that the heart is being effectively pumped to circulate blood. The emphasis on chest compressions is critical in maintaining blood flow to vital organs during cardiac arrest, while the rescue breaths help in providing oxygen to the patient's lungs. This ratio is recommended by organizations like the American Heart Association for performing high-quality adult CPR.