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.
The RIC and BTE models are IP 67 rated, essentially making this hearing aid waterproof, sweat proof and dirt proof. The hearing aids can be immersed in 1 meter of water for 30 minutes without damage to the instrument. Tinnitus therapy is included in each level of the Primax hearing instrument technology.