1.27: Cardiac and Muscle Disease
- Page ID
- 38607
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- CK-MB activity and troponin I levels peak at 18-24 hrs. post-MI and are usually normal by 24-36 hrs.
- True
- False
- LD “flip” (LD1 > LD2) or LD total activity is a recommended marker for myocardial infarction.
- True
- False
- The best system for the collection of blood samples to rule out AMI is:
- 0,2,4,6,8 and 24 hrs. post-admission
- 0,6,12 and 12 hrs. post-admission
- 0,24,48 and 72 hrs. post-admission
- 0, and each day post-admission
- any random combination
- CK-MB measurement for ruling out MI is:
- highly sensitive, but not very specific
- highly specific, but no very sensitive
- is both highly sensitive and specific
- is neither highly sensitive nor specific
Use the following Key to answer Questions 5-12:
- 1,2, and 3 are correct
- 1 and 3 are correct
- 2 and 4 are correct
- only 4 is correct
- all are correct
- Which of the following are types of arrhythmias?
- tachycardia
- cardiomyopathy
- bradycardia
- myocarditis
- Measurement of serum myoglobin is not very useful for ruling out MI because:
- it is present in too low concentrations
- levels rise and fall too rapidly (<12 hrs.) and is not useful for individuals who appear late.
- there are no specific assays to measure myoglobin
- it is not specific for cardiac disease
- Which of the following drugs are used for the treatment of arrythmias?
- beta-blockers
- digoxin
- diuretics
- quinidine
- Pathological disorders of muscle can be categorized as resulting form:
- degeneration of activating neurons
- degeneration of muscle cells
- damage by trauma
- genetic abnormalities
- Which of the following is (are) true about congestive heart failure (CHF)?
- CHF is caused by a failure of the heart to pump blood.
- CHF can be diagnosed by physicians on clinical grounds and by the use of measurements of brain natriuretic peptide.
- There is an increasing prevalence of CHF.
- CHF is usually caused by cardiac rhythm abnormalities.
- Acute coronary syndromes include:
- Congestive heart failure
- Unstable angina
- Cardiomyopathy
- Myocardial infarction
- Which of the following statements is (are) true?
- CK-MB and Troponin I have the same clinical sensitivity for detecting myocardial infarction.
- ALT and LD are currently valuable markers for detecting myocardial infarction.
- Troponin I is more specific for myocardial infarction. Than are CK-MB or myoglobin.
- Troponin I should be used in preference to Troponin T.
- CK-MB is increasingly be replaced by [fill in one of the following], a more specific marker for myocardial infarction.
- Troponin I or T
- Bone natriuretic peptide
- C-reactive protein
- Tropomyosin
- Titin
- Answer
-
- a (p. 576)
- b (p. 577)
- b (p. 576)
- a (p. 576-577)
- b (p. 574)
- c (p. 578)
- c (p. 575)
- e (p. 574-575)
- a (p. 574)
- c (p. 573)
- b (p. 576-577)
- a (p. 573)