A nurse is providing education to a client who has hypoglycemia. Which of the following information should the nurse include about the regulation of blood glucose levels?
The adrenal glands release epinephrine and norepinephrine to respond to low blood glucose.
The liver releases glucagon to regulate blood glucose levels.
Glycogenesis occurs in the pancreas when blood glucose levels fall.
The brain uses protein for energy if glucose levels fall too low.
The Correct Answer is A
Choice A Reason:
The adrenal glands play a crucial role in responding to low blood glucose levels by releasing epinephrine (adrenaline) and norepinephrine. These hormones help to increase blood glucose levels by stimulating glycogenolysis (the breakdown of glycogen to glucose) and gluconeogenesis (the production of glucose from non-carbohydrate sources) in the liver. This response is part of the body’s fight-or-flight mechanism, which ensures that sufficient glucose is available for immediate energy needs.
Choice B Reason:
The liver does not release glucagon; rather, it responds to glucagon, which is released by the pancreas. Glucagon stimulates the liver to convert stored glycogen into glucose (glycogenolysis) and to produce glucose from non-carbohydrate sources (gluconeogenesis). This process helps to raise blood glucose levels when they are low.
Choice C Reason:
Glycogenesis is the process of converting glucose into glycogen for storage, and it occurs primarily in the liver and muscle cells, not in the pancreas. The pancreas releases insulin to promote glycogenesis when blood glucose levels are high, but it does not perform glycogenesis itself.
Choice D Reason:
The brain primarily uses glucose for energy and does not switch to using protein unless glucose levels are extremely low and prolonged. In such cases, the brain can use ketone bodies derived from fat as an alternative energy source. Protein is not a primary energy source for the brain under normal conditions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Hypokalemia, or low potassium levels, is not a direct cause of central diabetes insipidus. Central diabetes insipidus is primarily related to issues with the production or release of antidiuretic hormone (ADH) from the hypothalamus or pituitary gland. Hypokalemia can affect kidney function but does not typically cause central diabetes insipidus.
Choice B Reason:
Surgery, particularly brain surgery, can cause central diabetes insipidus by damaging the hypothalamus or pituitary gland. These structures are crucial for the production and release of ADH, which regulates water balance in the body. Damage to these areas during surgery can lead to a deficiency in ADH, resulting in central diabetes insipidus.
Choice C Reason:
Renal failure is not a cause of central diabetes insipidus. While renal failure affects the kidneys’ ability to filter waste and balance fluids, central diabetes insipidus is related to a deficiency in ADH production or release. Renal failure can lead to other types of diabetes insipidus, such as nephrogenic diabetes insipidus, where the kidneys do not respond properly to ADH.
Choice D Reason:
Sickle cell disease is not a direct cause of central diabetes insipidus. Sickle cell disease primarily affects red blood cells and can lead to various complications, including kidney damage. However, it does not typically cause central diabetes insipidus, which is related to issues with ADH production or release.
Correct Answer is ["A","B","D"]
Explanation
Choice A reason:
Heart murmur is a common manifestation of valvular dysfunction. It occurs when there is turbulent blood flow across a damaged or abnormal heart valve. This can be due to stenosis (narrowing of the valve) or regurgitation (leakage of the valve). The murmur’s characteristics, such as timing, location, and intensity, can help in diagnosing the specific type of valvular disease. For example, a systolic murmur might indicate aortic stenosis or mitral regurgitation, while a diastolic murmur could suggest aortic regurgitation or mitral stenosis.

Choice B reason:
Chest pain is another symptom that can be associated with valvular dysfunction. This pain can result from increased workload on the heart due to inefficient blood flow through the valves. Conditions like aortic stenosis can lead to angina (chest pain) because the heart muscle may not receive enough oxygenated blood. This symptom is particularly concerning and warrants immediate medical attention to prevent complications such as myocardial infarction.
Choice C reason:
Varicose veins are not typically associated with valvular dysfunction in the heart. They are more related to issues with the veins in the legs, where the valves that prevent backflow of blood become weakened or damaged. This condition is generally referred to as chronic venous insufficiency and is not directly linked to the heart’s valvular problems.
Choice D reason:
Palpitations, or the sensation of irregular or rapid heartbeats, are common in clients with valvular dysfunction. These can occur due to arrhythmias, which are often seen in conditions like mitral valve prolapse or aortic regurgitation. The irregular heartbeats can be a result of the heart trying to compensate for the inefficient blood flow caused by the faulty valve.
Choice E reason:
Abdominal pain is not a typical manifestation of valvular dysfunction. While severe heart conditions can sometimes lead to generalized symptoms, abdominal pain is more commonly associated with gastrointestinal issues rather than heart valve problems. Therefore, it is not a primary symptom to anticipate in clients with valvular dysfunction.
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