Nokea
A patient has been vomiting for 4 hours. Which hormone will increase secretion in response to the physiologic changes caused by the vomiting?
- A. ADH
- B. Renin
- C. Thyroxin
- D. Aldosterone
Correct Answer: D
Rationale: Vomiting can lead to dehydration and electrolyte imbalances due to the loss of fluids and electrolytes. In response to these physiologic changes caused by vomiting, aldosterone secretion will increase. Aldosterone is a hormone produced by the adrenal glands that acts on the kidneys to increase reabsorption of sodium and water, helping to maintain blood pressure and electrolyte balance. By increasing aldosterone secretion, the body aims to retain more sodium and water to counteract the effects of vomiting and prevent dehydration.
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A 14-year-old child was recently diagnosed with hypertrophic cardiomyopathy. During a follow-up appointment, the mother asks the nurse, "How will this affect my child's ability to play football in the fall?" How should the nurse respond?
- A. "This shouldn't affect his ability to play football."
- B. "Children with cardiomyopathy should not play football."
- C. "He could participate in flag football but not tackle football."
- D. "This may actually make him a better, stronger football player."
Correct Answer: B
Rationale: Children diagnosed with hypertrophic cardiomyopathy should not participate in competitive sports such as football due to the potential risk of sudden cardiac events. Physical activity and sports with lower intensity may be allowed, but organized competitive sports with high intensity (such as football) are generally contraindicated. It is important for the health care team to prioritize the child's safety and well-being over sports participation in cases of cardiomyopathy. The nurse should communicate this information to the mother to help her understand the importance of limiting the child's physical activities to reduce the risk of complications related to hypertrophic cardiomyopathy.
The nurse is caring for a client admitted to the hospital with lower extremity edema and shortness of breath. Which electrocardiogram finding indicates the client is at risk for an alteration in perfusion?
- A. P wave smooth and round
- B. Absent U wave
- C. PR interval 0.30 seconds
- D. ST segment isoelectric
Correct Answer: D
Rationale: An isoelectric ST segment on an electrocardiogram can indicate myocardial ischemia or injury, which can lead to a decrease in perfusion to the heart muscle. This finding suggests an increased risk of inadequate blood flow to the heart, potentially resulting in further complications such as a myocardial infarction or altered perfusion to other organs. In a client with lower extremity edema and shortness of breath, identifying this ECG finding is crucial for early intervention and monitoring to prevent further deterioration in perfusion status.
After being diagnosed with polycystic kidney disease, an adult patient asks if current children are at risk for developing the disorder. How should the nurse respond?
- A. The adult form of this disorder is rare and should not affect grown children
- B. The children should undergo genetic testing and screening for evidence of the disease
- C. Because the condition was just diagnosed, there is no risk of passing the condition on to any children
- D. The children would have developed symptoms of the disorder in utero or shortly after birth if they had inherited the defective gene
Correct Answer: B
Rationale: Polycystic kidney disease (PKD) is a genetic disorder that can be inherited by children if one or both parents have the gene mutation responsible for the condition. In cases where a parent has been diagnosed with PKD, their children are at risk of inheriting the faulty gene. As such, it is recommended for the children to undergo genetic testing and screening to identify any evidence of the disease early on. By identifying the gene mutation in the children, appropriate monitoring and management can be initiated, potentially leading to better outcomes and quality of life for the affected individuals. Therefore, genetic testing and screening are crucial in cases where there is a known genetic component to a disorder like PKD.
A nurse is caring for a client who was involved in a motor vehicle accident and has lost approximately 1,550 mL of blood. The nurse should recognize that the client's shock will be classified as:
- A. Class I
- B. Class II
- C. Class III
- D. Class IV
Correct Answer: C
Rationale: Class III hemorrhagic shock typically involves the loss of 1,500-2,000 mL of blood, which aligns closely with the approximately 1,550 mL of blood lost by the client in this scenario. Class III shock is considered severe and can lead to significant physiological consequences, including decreased blood pressure, increased heart rate, altered mental status, and potential organ dysfunction. Therefore, based on the amount of blood loss and severity of symptoms, the client's shock would be classified as Class III.
What is the most accurate tool for assessing and diagnosing venous thrombosis?
- A. Ascending contrast venography
- B. Duplex venous ultrasonography
- C. Magnetic resonance imaging
- D. Plethysmography
Correct Answer: B
Rationale: Duplex venous ultrasonography is the most accurate tool for assessing and diagnosing venous thrombosis. It is a non-invasive imaging technique that combines Doppler flow studies with conventional ultrasonography. This allows for the visualization of blood flow in the veins and identification of any blood clots or obstructions. Duplex venous ultrasonography is highly sensitive and specific for detecting deep vein thrombosis (DVT) in the lower extremities, making it the preferred imaging modality for diagnosing venous thrombosis. Other imaging modalities like ascending contrast venography, magnetic resonance imaging, and plethysmography are less commonly used due to their disadvantages compared to duplex venous ultrasonography such as invasiveness, cost, and lower accuracy.