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.
1 In-the-canal (ITC) hearing aids are much smaller devices that fit entirely within the ear, but not entirely within the ear canal. 2  A set costs between $300 and $5,600. 3  The MicroPod 32 automatically adjusts to different hearing environments and retails for about $1,000. They fit entirely in the ear canal, and cost between $150 and more than $5,000. 2  Facelake offers a basic CIC hearing aid for under $150. 3  Siemens offers a CIC version of the Nitro 16, for about $5,000.