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?

A history of being in prison.

Previous violent behavior.

Experiencing delusions.

Male gender.

Answer and Explanation

The Correct Answer is B

The correct answer is B.

Previous violent behavior. According to the web search results, this is the best predictor of future violence among the given risk factors.

Other risk factors include past history of aggression, poor impulse control, and violence. Comorbidity that leads to acts of violence (psychotic delusions, command hallucinations, violent angry reactions with cognitive disorders).

Choice A is wrong because a history of being in prison is not a direct cause of violence, but rather a possible consequence of it.

Choice C is wrong because male gender is not a sufficient factor to predict violence, as there are many other variables involved. Choice D is wrong because experiencing delusions is not necessarily associated with violence, unless they are of a paranoid or persecutory nature.

Normal ranges for violence risk assessment are not standardized, but some tools that can be used include the Historical Clinical Risk Management-20 (HCR-20), the Violence Risk Appraisal Guide (VRAG), and the Psychopathy Checklist-Revised (PCL-R). These tools use different scales and criteria to evaluate the likelihood of violent behavior in individuals.

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Correct Answer is C

Explanation

The correct answer is Choice C.

Choice A rationale: While additional staff may be needed, the primary focus during a mass casualty event is triage and immediate care. Choice B rationale: Media relations are important, but the nurse's priority is direct patient care. Choice C rationale: Assessing incoming clients and determining their medical needs is crucial for prioritizing care and allocating resources effectively. Choice D rationale: Discharging stable clients may be necessary in extreme circumstances, but it is not the immediate priority. The focus should be on providing care to the influx of injured patients.

A. INR B. Fibrinogen level C. aPTT D. Platelet count

Correct Answer is A

Explanation

The correct answer is choice A. INR.

Warfarin is a vitamin K antagonist that inhibits the synthesis of factors II, VII, IX, and X in the liver.

These factors are part of the extrinsic and common pathways of coagulation, which are measured by the prothrombin time (PT) and the international normalized ratio (INR).

The INR is a standardized way of reporting the PT that accounts for the variability of different reagents and instruments.

The INR is used to monitor the therapeutic effect of warfarin and to adjust the dose accordingly.

The target INR range depends on the indication for warfarin, but it is usually between 2 and 3 for most conditions.

Choice B is wrong because fibrinogen level is not affected by warfarin.

Fibrinogen is a precursor of fibrin, which forms the final step of the coagulation cascade.

Fibrinogen level can be decreased in conditions such as disseminated intravascular coagulation (DIC), liver disease, or severe bleeding. Choice C is wrong because aPTT is not affected by warfarin.

aPTT measures the intrinsic and common pathways of coagulation, which are mainly dependent on factors VIII, IX, XI, and XII.

These factors are not inhibited by warfarin.

aPTT is used to monitor the effect of heparin, a direct antithrombin agent that inhibits thrombin and factor Xa.

Choice D is wrong because platelet count is not affected by warfarin.

Platelets are cell fragments that adhere to damaged blood vessels and form aggregates to initiate hemostasis.

Platelet count can be decreased in conditions such as immune thrombocytopenia (ITP), heparin-induced thrombocytopenia (HIT), or bone marrow suppression.

Normal ranges:

INR: 0.8-1.2
Fibrinogen: 200-400 mg/dL
aPTT: 25-35 seconds
Platelet count: 150-450 x 10^9/L References:

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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?

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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?