Cardiac cells can withstand ischemic conditions for 20 minutes before irreversible cell injury occurs:
True
False
The Correct Answer is True
Choice A reason:
True is the correct answer. Cardiac cells can endure ischemic conditions for approximately 20 minutes before irreversible injury occurs. Beyond this period, the lack of oxygen and nutrients leads to cell death and permanent damage to the heart tissue. This understanding is crucial in acute cardiac care, where timely intervention can prevent irreversible damage.
Choice B reason:
False is incorrect because it does not align with the known tolerance period of cardiac cells to ischemic conditions. The 20-minute window is critical for initiating interventions that can save heart tissue from permanent damage.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason:
Hepatocellular jaundice occurs due to damage or dysfunction of the liver cells (hepatocytes). This type of jaundice is associated with liver diseases such as hepatitis or cirrhosis, where the liver cannot effectively process bilirubin. It is not directly related to increased red blood cell breakdown but rather to the liver’s inability to handle bilirubin.
Choice B reason:
Hemolytic jaundice results from an increased breakdown of red blood cells, leading to a higher production of bilirubin, which the liver cannot clear fast enough. This condition causes an overload of bilirubin in the blood, resulting in jaundice. Hemolytic jaundice is typically seen in conditions such as hemolytic anemia, where red blood cell destruction exceeds the liver's ability to process and excrete bilirubin.
Choice C reason:
Obstructive jaundice is caused by a blockage in the bile ducts, preventing bilirubin from being excreted into the digestive system. This blockage can result from gallstones, tumors, or strictures. It is not related to the increased breakdown of red blood cells but rather to the obstruction of bile flow, leading to bilirubin buildup in the liver and subsequently in the blood.
Choice D reason:
Metabolic jaundice results from metabolic disorders that affect bilirubin processing or liver function. These disorders can lead to abnormalities in bilirubin metabolism, but they are not directly caused by increased red blood cell breakdown. Metabolic jaundice is less common than other forms and typically involves inherited conditions affecting bilirubin conjugation and excretion.
Correct Answer is D
Explanation
Choice A reason:
Nonadherence to the antiviral regimen could result in suboptimal control of the HIV infection, but it is not typically associated with symptoms of increased hunger, thirst, and frequent urination. Therefore, this choice does not explain the patient's symptoms.
Choice B reason:
An allergic reaction might cause a variety of symptoms, such as rash, itching, or swelling, but it would not typically cause increased hunger, thirst, and frequent urination. This choice is incorrect as it does not align with the presented symptoms.
Choice C reason:
Pancreatic infiltration by HIV is a rare and serious condition that can lead to various metabolic complications, but it is not a common cause of the specific symptoms described (increased hunger, thirst, and frequent urination). This choice is not consistent with the patient's symptoms.
Choice D reason:
Hyperglycemia, or high blood sugar, can cause symptoms like increased hunger, thirst, and frequent urination. These symptoms are indicative of diabetes, which can be a side effect of some antiviral medications, particularly protease inhibitors used in HIV treatment. Therefore, this choice accurately reflects the patient's symptoms and is the correct answer.
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