A charge nurse is teaching new staff members about factors that increase a client’s risk to become violent.

Which of the following risk factors should the nurse include as the best predictor of future violence?

Choice A option

Fibrinogen level: Fibrinogen is a protein involved in the blood clotting process, but in this case, it is not appropriate because is not the primary laboratory test used to monitor warfarin therapy. Monitoring fibrinogen levels is more relevant in assessing bleeding disorders or certain medical conditions.

Choice B option

PTT (Partial Thromboplastin Time): PTT is another laboratory test used to evaluate blood clotting function, particularly the intrinsic pathway of the clotting cascade. PTT is not routinely used to monitor warfarin therapy; it is more commonly used to monitor other anticoagulant medications like heparin.

Choice C option

The nurse should plan to report the client's INR (International Normalized Ratio) to obtain a prescription for the client's daily warfarin. INR is a critical laboratory test used to monitor the effectiveness and safety of warfarin therapy.

Warfarin is an anticoagulant medication commonly prescribed to prevent and treat blood clots. It works by interfering with the body's ability to use vitamin K to form blood clots. Monitoring the INR is essential because it indicates how long it takes for the blood to clot, and it helps determine if the client's warfarin dosage needs adjustment to achieve the desired level of anticoagulation.

Choice D option

Platelet count: Platelet count is essential to assess the number of platelets in the blood, which are crucial for normal clotting. However, platelet count monitoring is not the primary focus when prescribing warfarin. It is typically used to evaluate thrombocytopenia (low platelet count) or other conditions affecting platelet function.

Provide humidification of the room air. This is because humidification can help moisten the oral mucosa and reduce the discomfort of xerostomia. Xerostomia is a condition of dry mouth caused by reduced or absent saliva flow, which can occur after radiation therapy to the head and neck area.

Choice A is wrong because rinsing the mouth with an alcohol-based mouth wash can irritate the oral tissues and worsen xerostomia. Alcohol can also dehydrate the mouth and reduce saliva production.

Choice B is wrong because esophageal speech is a method of voice restoration after laryngectomy, not a treatment for xerostomia.

Esophageal speech involves swallowing air into the esophagus and releasing it to create sound.

It has nothing to do with saliva flow or dry mouth.

Choice C is wrong because saltine crackers are dry and hard to swallow without adequate saliva.

They can also scratch the oral mucosa and cause pain or bleeding. Offering the client saltine crackers between meals can aggravate xerostomia and increase the risk of choking.

Normal ranges for saliva flow vary depending on the method of measurement, but generally, a stimulated saliva flow rate of less than 0.7 mL/min or an unstimulated saliva flow rate of less than 0.1 mL/min is considered indicative of xerostomia.