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The nurse understands that which of the ff. best describes the action of propanolol (Inderal)?
- A. It increases heart rate
- B. It decreases fluid volume
- C. It decreases cardiac output
- D. It increases cardiac contractility
Correct Answer: C
Rationale: Propranolol (Inderal) is a non-selective beta-blocker that works by blocking beta receptors in the heart and blood vessels. By blocking these receptors, propranolol decreases the effects of adrenaline, leading to a decrease in heart rate, blood pressure, and cardiac output. This results in a reduction in the workload of the heart, making it an effective medication for conditions such as hypertension, angina, and certain types of arrhythmias. Overall, the action of propranolol leads to a decrease in cardiac output, contrary to the options that suggest an increase in heart rate, fluid volume, or cardiac contractility.
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At a public health fair, a nurse discusses the dangers of sun exposure. Prolonged sun exposure has been blamed for which form of cancer?
- A. Malignant melanoma
- B. Basal cell epithelioma
- C. Squamous cell carcinoma
- D. All of the above
Correct Answer: D
Rationale: Prolonged sun exposure is indeed a known risk factor for all three types of skin cancer listed in the choices. Malignant melanoma is a serious form of skin cancer that develops in the melanocytes, the cells that produce skin pigment. Basal cell epithelioma and squamous cell carcinoma are two other common types of skin cancer that are largely attributed to sun exposure. It is crucial to protect your skin from the harmful effects of the sun by applying sunscreen, wearing protective clothing, and seeking shade when necessary to reduce the risk of developing skin cancer.
The nurse is using calipers to measure skinfold thickness over the triceps muscle in a school- age child. What is the purpose of doing this?
- A. To measure body fat
- B. To measure muscle mass
- C. To determine arm circumference
- D. To determine accuracy of weight measurement
Correct Answer: A
Rationale: Skinfold thickness measurements using calipers are commonly used in assessing body composition, specifically to estimate body fat percentage. By measuring skinfold thickness over the triceps muscle in combination with measurements from other sites on the body, healthcare professionals can estimate the amount of subcutaneous fat present. This information is valuable in evaluating an individual's overall body composition and health status. The triceps skinfold measurement is a commonly included site in body fat calculations, especially in school-age children, where it can provide insights into growth and development.
The nurse is assisting the family of a child with a history of encopresis. Which should be included in the nurse's discussion with this family?
- A. Instruct the parents to sit the child on the toilet at twice-daily routine intervals.
- B. Instruct the parents that the child will probably need to have daily enemas.
- C. Suggest the use of stimulant cathartics weekly.
- D. Reassure the family that most problems are resolved successfully, with some relapses during periods of stress.
Correct Answer: D
Rationale: The most appropriate response for the nurse to include in the discussion with the family of a child with a history of encopresis is to reassure them that most problems are resolved successfully, with some relapses during periods of stress. Encopresis is a common disorder in childhood, characterized by the repeated passage of feces in inappropriate places. It is often related to chronic constipation and fecal impaction. Treatment for encopresis includes addressing the underlying constipation through interventions like dietary changes, behavioral therapies, and possibly medications. It is important for the nurse to educate the family that although it may take time and effort, most children improve with treatment. Reassuring the family that relapses during periods of stress are to be expected can help to alleviate some of their anxiety and encourage them to continue with the treatment plan.
What is the best age for solid food to be introduced into the infant's diet?
- A. 2 to 3 months
- B. 4 to 6 months
- C. When birth weight has tripled
- D. When tooth eruption has started
Correct Answer: B
Rationale: The American Academy of Pediatrics recommends introducing solid foods into an infant's diet between 4 to 6 months of age. At this stage, most infants have developed the necessary motor skills to start eating solid foods, such as being able to sit up and hold their head steady. Additionally, their digestive system has matured enough to handle solid foods. Introducing solid foods too early, such as at 2 to 3 months (Option A), can increase the risk of digestive issues and allergies. Waiting for tooth eruption (Option D) is not a reliable indicator as some infants may begin teething earlier or later than others. Waiting for the birth weight to triple (Option C) is not necessary as infants can start on solid foods once they reach the appropriate developmental stage around 4 to 6 months.
Five girls were victims of wasp and bee bites. Emergency treatment for these includes:
- A. A poultice of sodium bicarbonate and water may give relief
- B. A weak solution of household ammonia also decreases pain and is safe to use
- C. A and B are correct
- D. None of these
Correct Answer: D
Rationale: For emergency treatment of wasp and bee bites, it is essential to follow evidence-based guidelines. The options provided, using a poultice of sodium bicarbonate and water or a weak solution of household ammonia, are not considered effective or safe treatments for wasp and bee stings. The recommended first aid treatment for wasp and bee stings includes: