Alcohol intoxication
Alcohol intoxication | |
---|---|
Other names | Drunkenness, ethanol intoxication Supportive care[6] |
Frequency | Very common (especially in the Western world)[8] |
Deaths | c. 2,200 per year (U.S.)[9] |
Alcohol intoxication, also known in overdose as alcohol poisoning,[1] commonly described as drunkenness or inebriation,[10] is the behavior and physical effects caused by a recent consumption of alcohol.[6][11] In addition to the toxicity of ethanol, the main psychoactive component of alcoholic beverages, other physiological symptoms may arise from the activity of acetaldehyde, a metabolite of alcohol.[12] These effects may not arise until hours after ingestion and may contribute to the condition colloquially known as a hangover. The term intoxication is commonly used when large amount of alcohol is consumed along with physical symptoms and deleterious health effects.
Symptoms of
Alcohol intoxication typically begins after two or more
Management of alcohol intoxication involves supportive care.
Acute intoxication has been documented throughout history, and alcohol remains one of the world's most widespread
Symptoms
Alcohol intoxication leads to negative health effects due to the recent drinking of large amount of ethanol (alcohol).[6][21] When severe it may become a medical emergency. Some effects of alcohol intoxication, such as euphoria and lowered social inhibition, are central to alcohol's desirability.[22]
Pathophysiology
Alcohol is
Ethanol is metabolised to acetaldehyde by alcohol dehydrogenase (ADH), which is found in many tissues, including the gastric mucosa. Acetaldehyde is metabolised to acetate by acetaldehyde dehydrogenase (ALDH), which is found predominantly in liver mitochondria. Acetate is used by the muscle cells to produce acetyl-CoA using the enzyme acetyl-CoA synthetase, and the acetyl-CoA is then used in the citric acid cycle.[24]
As drinking increases, people become sleepy or fall into a stupor. After a very high level of consumption[vague], the respiratory system becomes depressed and the person will stop breathing. Comatose patients may aspirate their vomit (resulting in vomitus in the lungs, which may cause "drowning" and later pneumonia if survived). CNS depression and impaired motor coordination along with poor judgment increase the likelihood of accidental injury occurring. It is estimated that about one-third of alcohol-related deaths are due to accidents and another 14% are from intentional injury.[25]
In addition to respiratory failure and accidents caused by its effects on the central nervous system, alcohol causes significant metabolic derangements.
Mechanism
In the past, alcohol was believed to be a non-specific pharmacological agent affecting many neurotransmitter systems in the brain.[26] However, molecular pharmacology studies have shown that alcohol has only a few primary targets. In some systems, these effects are facilitatory, and in others inhibitory.
Among the neurotransmitter systems with enhanced functions are:
Among those that are inhibited are:
Alcohol is also converted into phosphatidylethanol (a lipid metabolite) by phospholipase D2, and this metabolite has been shown to directly bind to and regulate ion channels.[32][33] The result of these direct effects is a wave of further indirect effects involving a variety of other neurotransmitter and neuropeptide systems, leading finally to the behavioural or symptomatic effects of alcohol intoxication.[26]
The order in which different types of alcoholic beverages are consumed ("Grape or grain but never the twain" and "Beer before wine and you'll feel fine; wine before beer and you'll feel queer") does not have any effect.[34]
GABAA receptors
Many of the effects of activating
GABAA receptors containing the δ-subunit have been shown to be located exterior to the synapse and are involved with tonic inhibition rather than its γ-subunit counterpart, which is involved in phasic inhibition.[35] The δ-subunit has been shown to be able to form the allosteric binding site which makes GABAA receptors containing the δ-subunit more sensitive to ethanol concentrations, even to moderate social ethanol consumption levels (30mM).[37] While it has been shown by Santhakumar et al. that GABAA receptors containing the δ-subunit are sensitive to ethanol modulation, depending on subunit combinations receptors could be more or less sensitive to ethanol.[38] It has been shown that GABAA receptors that contain both δ and β3-subunits display increased sensitivity to ethanol.[36] One such receptor that exhibits ethanol insensitivity is α3-β6-δ GABAA.[38] It has also been shown that subunit combination is not the only thing that contributes to ethanol sensitivity. Location of GABAA receptors within the synapse may also contribute to ethanol sensitivity.[35]
Diagnosis
Alcohol intoxication is described as a
Many informal intoxication tests exist, which, in general, are unreliable and not recommended as deterrents to excessive intoxication or as indicators of the safety of activities such as motor vehicle driving, heavy equipment operation, machine tool use, etc.
For determining whether someone is intoxicated by alcohol by some means other than a blood-alcohol test, it is necessary to rule out other conditions such as
Management
Acute alcohol poisoning is a
Other measures may include
- Administer the vitamin thiamine to prevent Wernicke–Korsakoff syndrome, which can cause a seizure (more usually a treatment for chronic alcoholism, but in the acute context usually co-administered to ensure maximal benefit).
- Hemodialysis if the blood concentration is very high at >130 mmol/L (>600 mg/dL)[42]
- Provide oxygen therapy as needed via nasal cannula or non-rebreather mask.
- Administration of intravenous fluids in cases involving hypoglycemia and electrolyte imbalance.[43]
- While the medication metadoxine may speed the breakdown of alcohol, use in alcohol intoxication requires further study as of 2017.[6][44] It is approved in a number of countries in Europe, as well as India and Brazil.[44]
Additional medication may be indicated for treatment of nausea, tremor, and anxiety.
Clinical findings
Hospital admissions
Alcohol intoxication was found to be prevalent in clinical populations within the United States involving people treated for[8] trauma[45] and in the age group of people aged within their 18th - 24th years (in a study of a group for the years 1999 - 2004).[46] In the United States during the years 2010 - 2012, acute intoxication was found to be the direct cause of an average of 2,221 deaths, in the sample group of those aged within their 15th year or older.[9] The same mortality route is thought to cause indirectly more than 30,000 deaths per year.[5]
Prognosis
A normal liver detoxifies the blood of alcohol over a period of time that depends on the initial level and the patient's overall physical condition. An abnormal liver will take longer but still succeeds, provided the alcohol does not cause liver failure.[47]
People having drunk heavily for several days or weeks may have withdrawal symptoms after the acute intoxication has subsided.[48]
A person consuming a dangerous amount of alcohol persistently can develop memory blackouts and idiosyncratic intoxication or pathological drunkenness symptoms.[49] Long-term persistent consumption of excessive amounts of alcohol can cause liver damage and have other deleterious health effects.
Society and culture
Alcohol intoxication is a
Legal issues
Laws on drunkenness vary. In the United States, it is a criminal offense for a person to be
In some countries, it is also an offense to serve alcohol to an already-intoxicated person,[53] and, often, alcohol can only be sold by persons qualified to serve responsibly through alcohol server training.
The blood alcohol content (BAC) for legal operation of a vehicle is typically measured as a percentage of a unit volume of blood. This percentage ranges from 0.00% in Romania and the United Arab Emirates; to 0.05% in Australia, South Africa, Germany, Scotland, and New Zealand (0.00% for underage individuals); to 0.08% in England and Wales, the United States and Canada.[54]
The United States Federal Aviation Administration prohibits crew members from performing their duties within eight hours of consuming an alcoholic beverage, while under the influence of alcohol, or with a BAC greater than 0.04%.[55][56]
In the United States, the United Kingdom, and Australia, public intoxication is a crime (also known as "being drunk and disorderly" or "being drunk and incapable").[57]
In some countries, there are special facilities, sometimes known as "
Religious views
Christianity
Some religious groups permit the consumption of alcohol; some permit consumption but prohibit intoxication; others prohibit any amount of alcohol consumption altogether. Many denominations of Christianity, such as Catholicism, Orthodoxy and Lutheranism, use wine as a part of the Eucharist and permit its consumption, but consider it sinful to become intoxicated.[58]
In the Bible, the
Some Protestant Christian denominations prohibit the consumption of alcohol[64] based upon biblical passages that condemn drunkenness,[59] but others allow a moderate rate of consumption.[65]
In the Church of Jesus Christ of Latter-day Saints, alcohol consumption is forbidden,[66] and teetotalism has become a distinguishing feature of its members. Jehovah's Witnesses allow moderate alcohol consumption among its members.
Islam
In the Quran,[67][68][69] there is a prohibition on the consumption of grape-based alcoholic beverages, and intoxication is considered an abomination in the hadith of Muhammad. The schools of thought of Islamic jurisprudence have interpreted this as a strict prohibition of the consumption of all types of alcohol and declared it to be haram (lit. 'forbidden [in Islam]'), although other uses may be permitted.[70]
Buddhism
In Buddhism, in general, the consumption of intoxicants is discouraged for both monastics and lay followers. Many Buddhists observe a basic code of ethics known as the five precepts, of which the fifth precept is an undertaking to refrain from the consumption of intoxicating substances[71] (except for medical reasons).[72] In the bodhisattva vows of the Brahmajala Sutra, observed by Mahayana Buddhist communities, distribution of intoxicants is likewise discouraged, as well as consumption.[73]
Hinduism
In the Gaudiya Vaishnavism branch of Hinduism, one of the four regulative principles forbids the taking of intoxicants, including alcohol.
Judaism
In Judaism, in accordance with the biblical stance against drinking,[59] wine drinking is not permitted for priests and monks.[74] The biblical command to sanctify the Sabbath and other holidays has been interpreted as having three ceremonial meals with wine or grape juice, known as Kiddush.[75][76] A number of Jewish marriage ceremonies end with the bride and groom drinking a shared cup of wine after reciting seven blessings; this occurs after a fasting day in some Ashkenazi traditions. It has been customary and in many cases even mandated to drink moderately so as to stay sober, and only after the prayers are over.[77]
During the Seder on Passover, there is an obligation to drink four ceremonial cups of wine while reciting the Haggadah. It has been assumed as the source of the wine-drinking ritual at communion in some Christian groups.[78] During Purim, there is an obligation to become intoxicated; however, as with many other decrees, this has been avoided in many communities by allowing sleep during the day as a replacement.[79]
During the U.S. Prohibition era in the 1920s, a rabbi from the Reform Judaism movement proposed using grape juice for the ritual instead of wine. Although refuted at first, the practice became widely accepted by orthodox Jews as well.[80]
Other animals
In the film Animals Are Beautiful People, an entire section was dedicated to showing many different animals including monkeys, elephants, hogs, giraffes, and ostriches, eating over-ripe marula tree fruit causing them to sway and lose their footing in a manner similar to human drunkenness.[81] Birds may become intoxicated with fermented berries and some die colliding with hard objects when flying under the influence.[82][83]
In elephant warfare, practiced by the Greeks during the
It is a regular practice to give small amounts of beer to race horses in Ireland. Ruminant farm animals have natural fermentation occurring in their stomach, and adding alcoholic beverages in small amounts to their drink will generally do them no harm, and will not cause them to become drunk.
Alcoholic beverages are extremely harmful to dogs,[85] and often for reasons of additives such as xylitol, an artificial sweetener in some mixers. Dogs can absorb ethyl alcohol in dangerous amounts through their skin as well as through drinking the liquid or consuming it in foods. Even fermenting bread dough can be dangerous to dogs.[86] In 1999, one of the royal footmen for Britain's Queen Elizabeth II was demoted from Buckingham Palace due to his "party trick" of spiking the meals and drinks of the Queen's pet corgi dogs with alcohol which in turn would lead the dogs to run around drunk.[87]
See also
- A Night of Serious Drinking
- Alcohol and sex
- Alcohol enema
- Alcohol flush reaction
- Disulfiram-alcohol reaction
- Driving under the influence
- In vino veritas
- Long-term effects of alcohol consumption
- Low alcoholic drinks
- Short-term effects of alcohol consumption
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Alcohol poisoning presents in two forms, acute and chronic. However, these are most often referred to as alcohol intoxication and alcohol addiction respectively.
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In case of severe intoxication (blood alcohol concentration >1 g/L), it is necessary to prevent and to treat the potentially lethal metabolic effects of alcohol libation (in particular in adolescents) and to accelerate alcohol elimination from blood. It is necessary to support with intravenous fluids, treat hypoglycemia, hypotension, hypothermia and electrolyte imbalance, administer complex B and C vitamins, and support ventilation when necessary. To accelerate the elimination of ethanol from blood (assisting a faster recovery of the patient), two possible strategies can be applied: to perform a gastric lavage within two hours after drinking a considerable amount of alcohol or to administer metadoxine (pyridoxol L-2-pyrrolidone-5-carboxylate) that may be capable of decreasing ethanol blood levels by accelerating the urinary elimination of ethanol and acetaldehyde. Hypoglycemia is fasting-related and develops more frequently in young people (because of a lower reserve of liver glycogen); it is necessary to administer intravenous 5% glucose solution or, if possible, to invite the patient to eat fructose-rich foods and complex carbohydrates. Other metabolic effects could be electrolyte imbalance such as hypokalemia, hypomagnesaemia, hypocalcemia which must be appropriately and individually treated and replaced.
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Bibliography
- Bales, Robert F. "Attitudes toward Drinking in the Irish Culture". In: Pittman, David J. and Snyder, Charles R. (Eds.) Society, Culture and Drinking Patterns. New York: Wiley, 1962, pp. 157–187.
- Gentry, Kenneth L., Jr., God Gave Wine: What the Bible Says about Alcohol. Lincoln, Calif.: Oakdown, 2001.
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- Sigmund, Paul. St. Thomas Aquinas On Politics and Ethics. W.W. Norton & Company, Inc, 1988, p. 77.
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- Slingerland, Edward. Drunk: How We Sipped, Danced, and Stumbled Our Way to Civilization. Little, Brown Spark, 2021.
External links
- Alcohol overdose: NIAAA
- Alcohol poisoning: NHS Choices