It is feasible the AF caused the left atrial enlargement. Alternately the left atrial enlargement might have caused the AF. There the circle starts. The trick is to find out which came first, because the left atrial enlargement might be caused by something else. I'm not sure how they can tell about the left atrial enlargement from an ecg, until the echo.
Freebase(0.00 / 0 votes)Rate this definition: Parenteral is the introduction of nutrition, a medication, or other substance into the body via a route other than the mouth, especially via infusion, injection or implantation. Parenteral nutrition is nutrition via the veins.
(Redirected from Parenteral). A route of administration in pharmacology and toxicology is the path by which a drug, fluid, poison, or other substance is taken into the body. Routes of administration are generally classified by the location at which the substance is applied.Common examples include oral and intravenous administration.Routes can also be classified based on where the target of action is.outes of administration are generally classified by the location at which the substance is applied. Common examples include oral and intravenous administration. Routes can also be classified based on where the target of action is.