What is the significance of elevated serum levels of troponin?
This intracellular substance can leak into the blood with cardiac cellular injury or death.
Elevated serum levels of troponin occur because of sustained glycogenolysis.
This substance is elevated when a patient has acute tubular necrosis.
Serum elevation of this acute phase reactant occurs because of tissue injury.
The Correct Answer is A
Choice A rationale
Elevated serum levels of troponin indicate cardiac cellular injury or death. Troponin is a protein released into the bloodstream when heart muscle cells are damaged, such as during a myocardial infarction.
Choice B rationale
Sustained glycogenolysis does not cause elevated troponin levels. Glycogenolysis is the breakdown of glycogen to glucose, primarily occurring in the liver and muscles, not related to troponin release.
Choice C rationale
Acute tubular necrosis does not elevate troponin levels. This condition affects the renal tubules and is typically indicated by elevated creatinine and BUN levels.
Choice D rationale
Troponin is not an acute phase reactant. Acute phase reactants are proteins whose levels change in response to inflammation, such as C-reactive protein (CRP), not troponin.
Free Nursing Test Bank
- Free Pharmacology Quiz 1
- Free Medical-Surgical Quiz 2
- Free Fundamentals Quiz 3
- Free Maternal-Newborn Quiz 4
- Free Anatomy and Physiology Quiz 5
- Free Obstetrics and Pediatrics Quiz 6
- Free Fluid and Electrolytes Quiz 7
- Free Community Health Quiz 8
- Free Promoting Health across the Lifespan Quiz 9
- Free Multidimensional Care Quiz 10
View Related questions
Correct Answer is B
Explanation
Choice A rationale
Nausea and vomiting can be caused by various conditions, including gastrointestinal issues and brain injuries, but they are not specifically indicative of a diffuse brain stem injury.
Choice B rationale
Nuchal rigidity, or neck stiffness, is a classic sign of meningeal irritation, often due to meningeal edema in conditions like meningitis.
Choice C rationale
Bilateral fixed and dilated pupils are more commonly associated with severe brain injury or increased intracranial pressure, not specifically a cerebellar brain attack.
Choice D rationale
Brudzinski’s sign is a physical exam finding indicative of meningeal irritation, commonly seen in bacterial meningitis, not specifically viral meningitis.
Correct Answer is C
Explanation
Choice A rationale
Hyperkalemia can cause weakness and fatigue, but it is not directly related to acute coronary syndrome (ACS). ACS is primarily associated with chest pain and other cardiac symptoms.
Choice B rationale
Experiencing chest pain when climbing a flight of stairs may indicate stable angina, which is a form of chronic coronary artery disease. However, it does not meet the criteria for ACS, which involves more severe and persistent symptoms.
Choice C rationale
Persistent and severe chest pain when at rest is a hallmark symptom of acute coronary syndrome (ACS). This condition requires immediate medical attention as it can lead to myocardial infarction (heart attack) or other serious complications.
Choice D rationale
Paroxysmal nocturnal dyspnea (PND) is a symptom of heart failure, not acute coronary syndrome (ACS). While heart failure can coexist with ACS, PND alone does not indicate ACS4.