Complementary and alternative medicine focuses on treating the

person using natural products and mind-body therapies.

A. Minutes: This is too short a timeframe for warfarin's effect. It takes longer for the body's existing clotting factors to be depleted.

B. Days: This medication works by inhibiting the production of vitamin K-dependent clotting factors in the liver. As existing clotting factors are used up and new ones aren't produced as efficiently, it takes time for the anticoagulant effect to become significant.

C. Weeks: While the full effect might take some time (around 3-5 days), several weeks is an overestimation for most patients.

D. Hours: A few hours might show some initial effect, but it's not enough time for a substantial anticoagulant effect. It usually takes at least a day or two.

A. If he misses a dose, he should double the dose at the next scheduled time: This statement is incorrect. Doubling the dose of warfarin after missing a dose can significantly increase the risk of bleeding due to excessive anticoagulation. The nurse should emphasize the importance of taking the medication as prescribed and what to do if a dose is missed, such as contacting the healthcare provider for guidance.

B. The client should use an electric razor while on this medication: This statement is correct. Warfarin is an anticoagulant medication that can increase the risk of bleeding. Therefore, it's essential for patients taking warfarin to avoid activities that may increase the risk of injury or bleeding, such as shaving with a traditional razor that can cause cuts or nicks. Using an electric razor reduces this risk.

C. Mild nosebleeds are common during initial treatment: This statement is not entirely accurate. While warfarin can increase the risk of bleeding, including nosebleeds, it's not necessarily common during the initial treatment phase. However, patients should be aware of signs of bleeding and report them to their healthcare provider promptly.

D. Warfarin increases the risk for deep vein thrombosis: This statement is incorrect. Warfarin is actually prescribed to reduce the risk of blood clots, including deep vein thrombosis (DVT), pulmonary embolism (PE), and stroke, in patients who are at risk for these conditions. It works by inhibiting the formation of blood clots. Therefore, it does not increase the risk of DVT; rather, it decreases it.