What is the peak range of regular insulin?

Correct Answer: D

Rationale: The peak range of regular insulin typically occurs between 1 to 5 hours after administration. This means that regular insulin will reach its maximum effectiveness in lowering blood sugar levels during this time frame. Patients should be aware of this peak range to help manage their diabetes effectively and time their meals and activities accordingly.

Correct Answer: C

Rationale: Fibrinolytic drugs act by promoting the breakdown of blood clots or thrombi. These drugs activate plasminogen, which is present in the blood, to form plasmin. Plasmin is an enzyme that directly breaks down fibrin, the main protein in blood clots, thus dissolving the clot and facilitating the restoration of blood flow in the affected area. This mechanism of action helps in treating conditions such as acute myocardial infarction (heart attack) and ischemic stroke, where rapid clot dissolution is crucial to prevent tissue damage.

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: Ethambutol can cause optic neuritis, so periodic eye examinations are essential. Taking medications with meals can help reduce gastrointestinal side effects. Antacids should be avoided as they can interfere with drug absorption. Numbness and tingling of the hands or feet may indicate peripheral neuropathy, a side effect of isoniazid, and should be reported promptly.

Correct Answer: C

Rationale: Phentolamine is used during surgery for pheochromocytoma in children. Prazosin is used to treat hypertension in children. Propranolol and guanethidine are not indicated for use in children with a pheochromocytoma. The nurse should understand the indications for phentolamine to ensure safe and effective administration.