what causes secondary brain injury after head trauma

ATI RN

ATI Pathophysiology Exam 1

1. What causes secondary brain injury after head trauma?

A. Brain injury resulting from the body’s response to tissue damage
B. Brain injury resulting from initial trauma
C. Injury as a result of medical therapy
D. Focal areas of bleeding

Correct answer: A

Rationale: The correct answer is A. Secondary brain injury occurs due to the body's response to the initial trauma, which can worsen the effects of the primary injury. This response includes processes like inflammation, increased intracranial pressure, and reduced oxygen delivery to tissues. Choice B is incorrect because it refers to the primary trauma itself, not the secondary injury. Choice C is incorrect as it relates to injury caused by medical interventions rather than the body's response. Choice D is incorrect as it specifically mentions focal areas of bleeding, which is a consequence of trauma rather than the cause of secondary brain injury.

2. In gout, a man has developed large, hard nodules around his toes and elbows. The phase of gout he is in is:

A. asymptomatic.
B. acute flare.
C. the intercritical period.
D. chronic gout.

Correct answer: D

Rationale: The man's presentation of large, hard nodules around his toes and elbows is indicative of tophi formation, which is characteristic of chronic gout. Tophi are deposits of uric acid crystals that can develop over time in untreated or poorly managed gout. During the chronic phase of gout, tophi can form in joints, soft tissues, and organs. Asymptomatic refers to a phase where there are no symptoms present. Acute flare is characterized by sudden and severe joint pain and inflammation. The intercritical period is the time between gout attacks when the patient is symptom-free.

3. A patient is taking medroxyprogesterone acetate (Provera) for the treatment of endometriosis. What should the nurse include in the patient teaching?

A. Take the medication with food to prevent gastrointestinal upset.
B. Avoid prolonged sun exposure while taking this medication.
C. Take the medication at the same time each day to maintain consistent hormone levels.
D. Discontinue the medication if side effects occur.

Correct answer: C

Rationale: The correct answer is to take the medication at the same time each day to maintain consistent hormone levels. This is important for the effectiveness of medroxyprogesterone acetate. Choice A is incorrect because medroxyprogesterone acetate does not need to be taken with food. Choice B is irrelevant as sun exposure is not a concern with this medication. Choice D is incorrect as discontinuing the medication without consulting a healthcare provider can lead to adverse effects.

4. A patient with hypogonadism is being treated with testosterone gel. What application instructions should the nurse provide?

A. Apply the gel to the face and neck for maximum absorption.
B. Apply the gel to the chest or upper arms and allow it to dry completely before dressing.
C. Apply the gel to the genitals for improved results.
D. Apply the gel to the scalp and back.

Correct answer: B

Rationale: The correct answer is B. Testosterone gel should be applied to the chest or upper arms and allowed to dry completely before dressing to avoid transfer to others. Applying the gel to the face, neck, genitals, scalp, or back is not recommended as these areas may lead to unintentional transfer to others, inappropriate absorption, or potential side effects. Choice A is incorrect as applying the gel to the face and neck can lead to unwanted transfer. Choice C is incorrect as applying the gel to the genitals is not the recommended site for application. Choice D is incorrect as the scalp and back are not appropriate sites for applying testosterone gel.

5. What is the common denominator of all forms of heart failure?

A. Pulmonary edema
B. Jugular venous distention
C. Peripheral edema
D. Reduced cardiac output

Correct answer: D

Rationale: The correct answer is D: Reduced cardiac output. All forms of heart failure share the common denominator of reduced cardiac output, which leads to inadequate tissue perfusion. Pulmonary edema (choice A) is a consequence of heart failure but not the common denominator. Jugular venous distention (choice B) and peripheral edema (choice C) are signs of heart failure but do not represent the common denominator shared by all forms.