In stable angina: (A) CK- MB is elevated, (B) Troponin 1 is elevated, (C) Myoglobin is elevated, (D) The level of cardiac markers remain un changed
Answer is D. Ref Harrison 19 th ed pg 1593 Necrotic myocardial fibres release a variety of enzymes into blood stream. In stable angina necrosis of the cell does not occur so there is no elevation of serum enzymes.