Try our free nursing testbanks today. click here to join
Teas 7 test, Hesi A2 and Nursing prep
Nursingprepexams LEARN. PREPARE. EXCEL!
  • Home
  • Nursing
  • TEAS
  • HESI
  • Blog
Start Studying Now

Take full exam for free

What is the significance of elevated serum levels of troponin?

A.

This intracellular substance can leak into the blood with cardiac cellular injury or death.

B.

Elevated serum levels of troponin occur because of sustained glycogenolysis.

C.

This substance is elevated when a patient has acute tubular necrosis.

D.

Serum elevation of this acute phase reactant occurs because of tissue injury.

Answer and Explanation

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

  1. Free Pharmacology Quiz 1
  2. Free Medical-Surgical Quiz 2
  3. Free Fundamentals Quiz 3
  4. Free Maternal-Newborn Quiz 4
  5. Free Anatomy and Physiology Quiz 5
  6. Free Obstetrics and Pediatrics Quiz 6
  7. Free Fluid and Electrolytes Quiz 7
  8. Free Community Health Quiz 8
  9. Free Promoting Health across the Lifespan Quiz 9
  10. Free Multidimensional Care Quiz 10
Take full exam free

View Related questions

Correct Answer is A

Explanation

Choice A rationale

Cerebral ischemia due to an embolus that originates in the left atrium is a common complication of chronic atrial fibrillation (AFib). AFib causes irregular and chaotic electrical signals in the atria, leading to poor blood flow and the formation of blood clots. These clots can travel to the brain, causing a stroke. This is the most acute and severe event associated with chronic AFib.

Choice B rationale


Development of ventricular fibrillation is a life-threatening arrhythmia that can occur in patients with severe heart disease, but it is not a common acute event in chronic AFib. Ventricular fibrillation involves the ventricles and is characterized by rapid, erratic electrical impulses, leading to ineffective heart contractions and sudden cardiac arrest.

Choice C rationale

Ischemia of the cerebellum due to a ruptured intracranial aneurysm is not directly related to chronic AFib. While AFib increases the risk of stroke, it does not specifically cause aneurysms or cerebellar ischemia. Aneurysms are typically related to other risk factors such as hypertension and vascular abnormalities.

Choice D rationale

Prolonged capillary refill secondary to a complete lack of cardiac output is a sign of severe cardiac dysfunction or shock. While AFib can lead to heart failure and reduced cardiac output, it does not typically cause a complete lack of cardiac output. The most acute event related to AFib is the formation of emboli and subsequent stroke.

Correct Answer is A

Explanation

Choice A rationale

A temperature of 38°C (100.4°F) and a stiff neck are classic signs of meningitis, indicating inflammation of the meninges.

Choice B rationale

Myocardial infarction typically presents with chest pain, not a stiff neck.

Choice C rationale

Appendicitis presents with abdominal pain, not a stiff neck.

Choice D rationale

Pneumonia presents with respiratory symptoms, not a stiff neck.

Quick Links

Nursing Teas Hesi Blog

Resources

Nursing Test banks Teas Prep Hesi Prep Nursingprepexams Blogs
© Nursingprepexams.com @ 2019 -2025, All Right Reserved.