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Sudden infant death syndrome (SIDS) is one of the most common causes of death in infants. At what age is the diagnosis of SIDS most likely?
- A. At 1 to 2 years of age
- B. At I week to 1 year of age, peaking at 2 to 4 months
- C. At 6 months to 1 year of age, peaking at 10 months
- D. At 6 to 8 weeks of age
Correct Answer: B
Rationale: Sudden infant death syndrome (SIDS) is most likely to occur between the ages of 1 week to 1 year, with the highest risk period being between 2 to 4 months of age. While SIDS can occur up to the age of 1 year, the peak incidence is during the first 6 months of life. It is important to follow safe sleep practices, such as placing infants on their backs to sleep, to reduce the risk of SIDS during this vulnerable period.
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An adolescent asks the nurse what causes primary dysmenorrhea. The nurse's response should be based on which statement?
- A. It is an inherited problem.
- B. Excessive estrogen production causes uterine pain.
- C. There is no physiologic cause; it is a psychological reaction.
- D. There is a relation between prostaglandins and uterine contractility.
Correct Answer: D
Rationale: Primary dysmenorrhea is painful menstruation that occurs without any underlying gynecological conditions, such as endometriosis. The cause of primary dysmenorrhea is related to the release of prostaglandins during menstruation. Prostaglandins are lipid compounds that act as chemical messengers in the body, causing the uterus to contract and shed its lining during menstruation. High levels of prostaglandins can lead to increased uterine muscle contractions, resulting in pain. Therefore, the nurse should explain to the adolescent that there is a relation between prostaglandins and uterine contractility as the cause of primary dysmenorrhea.
Which intervention should the nurse implement to maintain the skin integrity of the preterm newborn?
- A. Cleanse skin with a gentle alkaline-based soap and water.
- B. Cleanse skin with a neutral pH solution only when necessary.
- C. Thoroughly rinse skin with plain water after bathing in a mild hexachlorophene solution.
- D. Avoid cleaning skin.
Correct Answer: B
Rationale: Preterm newborns have delicate skin that is more susceptible to damage and irritation. Using a neutral pH solution for cleansing helps to maintain the skin's natural acidity and prevent disruption of the skin barrier. It is important to avoid over-bathing or using harsh alkaline-based soaps that can strip the skin of its natural oils and cause dryness or irritation. Cleansing the skin only when necessary helps to protect the fragile skin of preterm newborns and reduce the risk of skin breakdown or injury.
On the third day after a partial thyroidectomy, a client exhibits muscle twitching and hyperirritability of the nervous system. When questioned, the client reports numbness and tingling of the mouth and fingertips. Suspecting a life- threatening electrolyte disturbance, the nurse notifies the surgeon immediately. Which electrolyte disturbance most commonly follows thyroid surgery?
- A. Hypocalcemia
- B. Hyperkalemia
- C. Hyponatremia
- D. Hypermagnesemia
Correct Answer: A
Rationale: Hypocalcemia is the most common electrolyte disturbance that follows thyroid surgery, particularly after a partial thyroidectomy. This occurs due to inadvertent injury or removal of the parathyroid glands, which are responsible for regulating calcium levels in the body. The symptoms of hypocalcemia, such as muscle twitching, hyperirritability of the nervous system, numbness, and tingling, align with the client's presentation in this scenario. Prompt recognition and treatment of hypocalcemia are crucial to prevent life-threatening complications like tetany or seizures. Therefore, the nurse's decision to notify the surgeon immediately is appropriate to address this electrolyte imbalance.
A patient, age 46, is admitted for observation following an auto accident. He hit the steering wheel and has a chest contusion. Which of the following creates a pericardial friction rub?
- A. Inflamed cardiac tricuspid and mitral valves
- B. Decreased cardiac output c.Increased pulmonary pressures
- C. Rubbing of pericardial and epicardial layers
Correct Answer: C
Rationale: A pericardial friction rub is a harsh grating sound caused by the rubbing of the pericardial and epicardial layers of the heart. This rubbing sound can be heard with a stethoscope and is typically indicative of pericarditis, inflammation of the pericardium (the sac surrounding the heart). In the case of the patient with a chest contusion following an auto accident, the trauma could have led to pericardial inflammation and subsequent pericardial friction rub. The other choices do not directly result in the creation of a pericardial friction rub.
While caring for a critically ill child, the nurse observes that respirations are gradually increasing in rate and depth, with periods of apnea. What pattern of respiration will the nurse document?
- A. Dyspnea
- B. Tachypnea
- C. Cheyne-Stokes respirations
- D. Seesaw (paradoxic) respirations
Correct Answer: C
Rationale: Cheyne-Stokes respirations are characterized by alternating periods of deep, rapid breathing followed by periods of apnea. This cyclic pattern of respiration is often seen in critically ill patients and can be a sign of serious neurological or cardiac dysfunction. The nurse should document Cheyne-Stokes respirations when observing this specific breathing pattern in the child described in the scenario.