What is the action of ergotamine?

Choice A rationale

Checking vitamin K levels doesn't directly monitor warfarin's effect.

Choice B rationale

PTT and aPTT assess heparin, not warfarin.

Choice C rationale

INR specifically measures warfarin's effectiveness and safety.

Choice D rationale

Platelet levels don't monitor the anticoagulant effect of warfarin.

Choice A rationale

A patient 3 days after surgery may still require higher doses of opioids for pain management, but the duration and intensity of postoperative pain typically decrease over time. This patient may not necessarily require a higher-than-expected dose compared to others.

Choice B rationale

Patients with cancer often experience severe and chronic pain due to the disease itself or its treatments. These patients may develop tolerance to opioids over time, necessitating higher-than-expected doses to achieve adequate pain relief.

Choice C rationale

Hypotension is a contraindication for high doses of opioids, as opioids can cause further blood pressure reduction. This patient would require careful dose adjustment to avoid exacerbating hypotension.

Choice D rationale

Patients with a concussion are at risk of altered mental status and respiratory depression from opioids. Therefore, higher doses are generally avoided to prevent worsening of these conditions.