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Which of the following factors may alter the level of consciousness in a patient?
- A. Alcohol
- B. Electrolytes
- C. Infection
- D. All of the above may cause altered level of consciousness
Correct Answer: D
Rationale: Various factors can lead to altered levels of consciousness in a patient. Alcohol consumption can depress the central nervous system and cause changes in consciousness. Electrolyte imbalances, such as hyponatremia or hypernatremia, can disrupt brain function and affect consciousness. Infections, especially those affecting the brain like encephalitis, can also lead to alterations in consciousness. Therefore, all of the choices provided - Alcohol, Electrolytes, and Infection - can potentially cause changes in the level of consciousness. Remember the acronym AEIOU-TIPPS to recall common causes of decreased level of consciousness, including Alcohol, Electrolytes, and Infection, among others.
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A mother brings her 5-week-old infant to the health care clinic and tells the nurse that the child has been vomiting after meals. The mother reports that the vomiting is becoming more frequent and forceful. The nurse suspects pyloric stenosis and asks the mother which assessment question to elicit data specific to this condition?
- A. Are the stools ribbon-like, and is the infant eating poorly?
- B. Does the infant suddenly become pale, begin to cry, and draw the legs up to the chest?
- C. Does the vomit contain sour, undigested food without bile, and is the infant constipated?
- D. Does the infant cry loudly and continuously during the evening hours but nurses or takes formula well?
Correct Answer: C
Rationale: Vomiting undigested food that is not bile stained and constipation are classic symptoms of pyloric stenosis. Stools that are ribbon-like and a child who is eating poorly are signs of congenital megacolon (Hirschsprung's disease). An infant who suddenly becomes pale, cries out, and draws the legs up to the chest is demonstrating physical signs of intussusception. Crying during the evening hours, appearing to be in pain, eating well, and gaining weight are clinical manifestations of colic.
Which of the following can cause coup-contrecoup injuries?
- A. Rotational forces
- B. Deformation forces
- C. Deceleration forces
- D. Acceleration forces
Correct Answer: C
Rationale: Deceleration forces occur when the head is moving and abruptly comes to a stop, such as in a car crash. This sudden deceleration can cause the brain to hit against the skull, resulting in coup-contrecoup injuries. In a coup-contrecoup injury, the brain is damaged on opposite sides due to the initial impact and the rebound effect inside the skull. Rotational forces usually result in diffuse axonal injuries rather than coup-contrecoup injuries. Deformation forces can cause focal brain injuries but not coup-contrecoup injuries. Acceleration forces typically lead to diffuse brain injuries, not coup-contrecoup injuries. Therefore, the correct answer is deceleration forces.
A client is in her third month of her first pregnancy. During the interview, she tells the nurse that she has several sex partners and is unsure of the identity of the baby's father. Which of the following nursing interventions is a priority?
- A. Counsel the woman to consent to HIV screening
- B. Perform tests for sexually transmitted diseases
- C. Discuss her high risk for cervical cancer
- D. Refer the client to a family planning clinic
Correct Answer: A
Rationale: Counsel the woman to consent to HIV screening. The client's behavior places her at high risk for HIV. Testing is the first step in identifying and managing the risk of HIV infection. Early detection allows for timely interventions and better outcomes. While performing tests for sexually transmitted diseases (choice B) is important, addressing the immediate and potentially life-threatening risk of HIV takes precedence. Discussing the risk for cervical cancer (choice C) is not the priority at this time as HIV screening is more urgent. Referring the client to a family planning clinic (choice D) is not the immediate priority given the client's current high-risk behavior and the need to address the immediate threat of HIV infection.
What drives respiration in a patient with advanced chronic respiratory failure?
- A. Hypoxemia
- B. Hypocapnia
- C. Hypercapnia
- D. None of the above
Correct Answer: A
Rationale: In patients with advanced chronic respiratory failure, such as those with chronic obstructive pulmonary disease (COPD), the respiratory drive shifts from being primarily stimulated by high levels of carbon dioxide (hypercapnia) to being driven by low oxygen levels (hypoxemia). This shift is due to the body's adaptation to chronic respiratory acidosis and hypoxemia. As a result, hypoxemia becomes the primary stimulus for respiration in these patients. Hypocapnia, a low level of carbon dioxide, is not a common driver of respiration in patients with advanced chronic respiratory failure. Therefore, the correct answer is hypoxemia.
A 25-year-old male client has been newly diagnosed with hypothyroidism and will take levothyroxine (Synthroid) 50 mcg/day by mouth. As part of the teaching plan, the nurse emphasizes that this medication:
- A. Should be taken in the morning
- B. May increase the client's energy level
- C. Does not need to be stored in a dark container
- D. May increase the client's heart rate
Correct Answer: A
Rationale: The correct answer is that levothyroxine (Synthroid) should be taken in the morning. Taking it in the morning can help prevent interference with the client's sleeping pattern, as one of the side effects of levothyroxine is insomnia. Choice B is incorrect because levothyroxine is actually used to treat hypothyroidism and can help increase energy levels. Choice C is incorrect as there is no specific requirement for levothyroxine to be stored in a dark container. Choice D is incorrect because levothyroxine is more likely to increase heart rate rather than decrease it.