Quick Answer. Cardiotonic drugs are substances that increase the contracting mechanism within the heart, thereby causing more blood to be pumped throughout the circulatory system. These drugs usually affect intracellular calcium levels in the heart muscle to achieve the desired increase in muscle action.
Like the name suggests, the entire CIC hearing aid fits into the ear canal. There is nothing on the outside of the ear, making it virtually unnoticeable. The CIC hearing aid is custom-made to fit into your ear canal to ensure a perfect fit.
Eargo fits discreetly inside the ear canal so it's possible no one can see you're wearing a hearing device. Unless of course, they have X-ray vision. Flexi Fibers hold Eargo in place and also allow it to float inside the ear. It's so comfortable, you just may forget you're wearing a hearing device.