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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following best describes the effect of calcium ions on the myocardium?
assistant
The correct answer is  Positively inotropic is the best description of the effect of calcium ions on the myocardium.Calcium plays a role in excitation-contraction coupling, and in possible drug effects and heart failure.