Nokea
Janie presents to the clinic with hard ear wax in both ear canals. Instructions regarding home removal of hard cerumen include:
- A. Moisten a cotton swab (Q-tip) and swab the ear canal twice daily
- B. Instill tap water in both ears while bathing
- C. Squirt hydrogen peroxide into ears with each bath
- D. Instill carbamide peroxide (Debrox) twice daily until canals are clear
Correct Answer: D
Rationale: Carbamide peroxide softens cerumen safely; Q-tips risk impaction, and water or peroxide are less effective.
You may also like to solve these questions
Choose a drug that does not cause bradycardia:
- A. Clonidine
- B. Guanethidine
- C. Hydralazine causes reflex tactycardia
- D. Propranolol
Correct Answer: C
Rationale: Hydralazine causes reflex tachycardia, not bradycardia.
Clinical dosing of Bethanechol:
- A. Begins at the highest effective dose to obtain a rapid response
- B. Starts at 5 mg to 10 mg PO and is repeated every hour until a satisfactory clinical response is achieved
- C. Requires dosing only once daily
- D. Is the same for both the oral and parenteral route
Correct Answer: B
Rationale: Bethanechol is titrated hourly from 5-10 mg to achieve the desired effect.
NSAIDs combat fever by inhibiting which prostaglandin?
- A. Prostaglandin E2
- B. Prostaglandin I2
- C. Prostaglandin D2
- D. Prostaglandin F2
Correct Answer: A
Rationale: Prostaglandin E2 mediates fever in the hypothalamus; NSAIDs reduce fever by inhibiting its synthesis.
antagonist is a substance that:
- A. Binds to the receptors and initiates changes in cell function, producing maximal effect
- B. Binds to the receptors and initiates changes in cell function, producing submaximal effect
- C. Interacts with plasma proteins and doesn't produce any effect
- D. Binds to the receptors without directly altering their functions
Correct Answer: D
Rationale: An antagonist binds receptors without activating them, blocking agonist effects.
Angina is caused by:
- A. Blocking beta1 receptors with a constant binding of noradrenaline
- B. Activating beta2 receptors
- C. Beta1 receptors are not active anymore
- D. Extreme binding of noradrenaline due to up regulation
Correct Answer: D
Rationale: Angina results from myocardial ischemia, often due to excessive demand or reduced supply, which can be exacerbated by upregulated noradrenaline binding increasing heart workload.