This issue of Alcohol Health & Research World provides many reasons wherefore patients with cardiovascular disease should limit their alcohol intake.

This issue of Alcohol Health & Research World provides many reasons wherefore patients with cardiovascular disease should limit their alcohol intake. In this article, we will discuss over and above another reason: interactions in the dead body between alcohol and cardiovascular medications. Although many interactions of alcohol with cardiovascular medications are mild or transient, others have serious, smooth fatal, consequences. In a fresh article, Shinn and Shrewsbury (1988) cited interactions between alcohol and about 150 medications, a number of which are prescribed for the treatment of cardiovascular disorders.

The general intents produced in the body by means of combinations of chemical substances are known as drug-drug interactions. The eventuates of drug-drug interactions can be additive, supra-additive, or antagonistic. In additive interactions, the snare effect is the sum of the weights of the individual drugs. In supra-additive (or synergistic) interactions, the without deductions effect is greater than the summary of the individual effects. Synergism between pair drugs can result in tenors similar to their separate effects--but more or les intense--or in results that neither of the physics can produce alone. In antagonistic interactions, the purports of one drug reduce or arrest the effects of another.

Two-thirds of the American population athwart the age of 18 drink alcoholic beverages (Hilton 1988) population also ingest nonbeverage alcohol, sometimes with the intent to abuse it (Egbert et al. 1985) Alcohol is an active ingredient in nearly 500 prescription and nonprescription mix with drugs products, including mouthwashes, elixirs, cough syrup visible form [i]or[/i] frame rubs, and medications given by the agency of injection (Parker 1982-1983). Other ways in which alcohol can chronicle the body include inhalation and contact with the skin. avenue by these routes is more used by all than one might think, since alcohol is used widely in industry as a menstrum and is an end produce or intermediate product in the manufacture of many cleansings emulsifiers, lubricants, and emollients. It is probably safe to assume that many bodys taking cardiovascular medications consume alcohol, and that a number of those who judiciously avoid alcoholic beverages are inadvertently expos to alcohol in other forms.

Although the issues of moderate alcohol use or inadvertent prospect to alcohol may be negligible in healthy adults, they may be important in patients suffering from cardiovascular disease, who frequently have other illnesses and commonly are somewhat old Shook and colleagues (1984) reported a case of inadvertent alcohol prospect during the administration of cardiovascular medications to a 71-year-old man with chronic stable angina. Intravenous administration of a large dose of nitroglycerin unexpect l to a small quantity in blood pressure, marked mental changes, and unconsciousness. examiners found no explanation for the patient's condition other than the carriage of alcohol in the blood--the source of the alochol being the nitroglycerin solution. Because the alcohol concentration was well below the average even for intoxication, the physicians first assumed that the patient's symptoms were the inference of well-known interactions between alcohol and a sedative that had been administered. A central part of alcohol in the illness was disclosed when physicians reinstated intravenous nitroglycerin therapy after discontinuing the sedative: the patient again sustained a significant drop in children pressure and diminished consciousness.

This fairly typical cardiology case illustrates several points. (1) inadvertent alcohol outlook does occur; (2) the combination of alcohol and cardiovascular medications can lead to hazardous situations; (3) the imports of alcohol are not determined strictly on the amount of alcohol consum the rate at which it is consum or the family alcohol concentration attained (relatively small amounts of alcohol can bear important effects, so that physicians should be aware of the possibility of metabolic sensitivity to alcohol); (4) because of the number of factors involved, it frequently is difficult to attribute a patient's clinical condition to an alcohol-medication interaction. Indeed, when interactions come into view physicians usually modify the treatment regimen and solely rarely investigate underlying causes.

MECHANISMS OF ALCOHOL-MEDICATION

INTERACTIONS

Many of the mechanisms involved in interactions between medications, or between medications and other substances, are unknown or incompletely known. calm the "normal" effects of medications frequently are not understood, especially at the biochemical and molecular of the same heights A medication frequently bring into beings multiple effects on one or more corpse systems, so that the appreciable rise is the sum of several biochemical or biological tenors some or all of which can be modified at interaction with another substance.

The subject of attention of drug-drug interactions is useful to researchers attempting to establish in what way a medication is metabolized in the corpse or trying to locate the site of the drug's actions. In 1900 Loomis commented