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2. Coronary CT calcium scan - Wikipedia

   en.wikipedia.org/wiki/Coronary_CT_calcium_scan

   A coronary CT calcium scan is a computed tomography (CT) scan of the heart for the assessment of severity of coronary artery disease. Specifically, it looks for calcium deposits in atherosclerotic plaques in the coronary arteries that can narrow arteries and increase the risk of heart attack. [1] These plaques are the cause of most heart ...

3. Cardiac contractility modulation - Wikipedia

   en.wikipedia.org/wiki/Cardiac_contractility...

   Heart failure is a chronic disease that usually progresses gradually. [20] The rate of progression and the degree of symptoms of the disease varies between different patients. Cardiac contractility modulation therapy aims to treat heart failure through a medium- to long-term treatment, over the course of weeks and months. [citation needed]

4. Cardiac action potential - Wikipedia

   en.wikipedia.org/wiki/Cardiac_action_potential

   These calcium ions bind to and open more calcium channels (called ryanodine receptors) located on the sarcoplasmic reticulum within the cell, allowing the flow of calcium out of the SR. These calcium ions are responsible for the contraction of the heart. Calcium also activates chloride channels called I to2, which allow Cl − to enter the cell ...

5. Management of heart failure - Wikipedia

   en.wikipedia.org/wiki/Management_of_heart_failure

   Moderate physical activity, when symptoms are mild or moderate; or bed rest when symptoms are severe. In individuals with heart failure, increasing physical activity offers significant prognostic benefits for the secondary prevention of the condition. [3] If sleep apnea is identified, treat with CPAP, BiPAP, dental appliances or surgery. Sleep ...

6. Premature ventricular contraction - Wikipedia

   en.wikipedia.org/wiki/Premature_ventricular...

   Premature ventricular contractions may be associated with underlying heart disease, and certain characteristics are therefore elicited routinely: the presence of signs of heart disease or a known history of heart disease (e.g. previous myocardial infarction), as well as heart disease or sudden cardiac death in close relatives.

7. Myocardial contractility - Wikipedia

   en.wikipedia.org/wiki/Myocardial_contractility

   Increase the amount of calcium in the sarcoplasm. More calcium available for Troponin to use will increase the force developed. Decreasing contractility is done primarily by decreasing the influx of calcium or maintaining lower calcium levels in the cytosol of cardiac myocytes during an action potential.

8. Hypertrophic cardiomyopathy - Wikipedia

   en.wikipedia.org/wiki/Hypertrophic_cardiomyopathy

   Often, symptoms mimic those of congestive heart failure (esp. activity intolerance and dyspnea), but treatment of each is different. Beta-blockers are used in both cases, but treatment with diuretics, a mainstay of CHF treatment, will exacerbate symptoms in hypertrophic obstructive cardiomyopathy by decreasing ventricular preload volume and ...

9. Cardiotonic agent - Wikipedia

   en.wikipedia.org/wiki/Cardiotonic_agent

   Calcium is a vital element for regulating the contraction and relaxation of the heart muscle. [6] Calcium sensitizers are medications that increase the responsiveness of heart muscle cells to calcium, enabling more forceful contractions while conserving energy. [49] Contraction of the heart muscle relies on electrical signals that trigger the ...