Drunken

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Alcohol intoxication (also known as drunkenness or inebriation ) is a physiological state that occurs when a person has a high level of ethanol (alcohol) in his or her Blood alcohol content|blood .

Common symptom s of alcohol intoxication include slurred speech, euphoria , impaired balance, loss of muscle coordination ( ataxia ), flushed face, vomiting, reddened eyes, disinhibition|reduced inhibition , and erratic behavior. In severe cases, it can cause coma or death .

Toxicology|Toxicologists use the term “alcohol intoxication” to discriminate between alcohol and other toxin s.

Acute alcohol intoxication results from a very high level of Alcoholic beverage|alcohol in the blood. This term is used by health care provider s, often in emergencies.

Pathophysiology

Alcohol is metabolized by a normal liver at the rate of about one ounce (one " highball ", a normal beer, a regular sized glass of wine) every 90 minutes. An "abnormal" liver with conditions such as hepatitis , cirrhosis , gall bladder disease, and cancer will have a slower rate of metabolism.

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 predominantly found 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 .Smith, C., Marks, Allan D., Lieberman, Michael, 2005, 'Marks' Basic Medical Biochemistry: A Clinical Approach, 2nd Edtn, Lippincott Williams & Williams, USA, p. 458 It takes roughly 90 minutes for a healthy liver to metabolize a single ounce, approximately one hour per standard unit.

Ethanol's acute effects are largely due to its nature as a central nervous system depressant, and are dependent on blood alcohol concentrations:

20–99& nbsp;mg/dL - Impaired coordination and euphoria

100–199& nbsp;mg/dL - Ataxia , poor judgement, labile mood

200–299& nbsp;mg/dL - Marked ataxia, slurred speech, poor judgement, labile mood, nausea and vomiting

300–399& nbsp;mg/dL - General anaesthesia#Stages of anaesthesia|Stage 1 anaesthesia , memory lapse, labile mood

400+ mg/dL - Respiratory failure, coma

As drinking increases, people become sleepy, or fall into a stupor . After a very high level of consumption, the respiratory system becomes depressed and the person will stop breathing. The most important thing for friends who witness someone "passing out" from too much alcohol is to get them emergency medical treatment. 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 co-ordination along with poor judgement increases the likelihood of accidental injury occurring.McArdle, P (2004). Substance abuse by children and young people. Arch. Dis. Child. 89: 701-704 It is estimated that about one third of alcohol-related deaths are due to accidents (32%), and another 14% are from intentional injury.The World Health Organisation (2007) Alcohol and Injury in Emergency Departments

In addition to respiratory failure and accidents caused by effects on the central nervous system, alcohol causes significant metabolic derangements. Hypoglycaemia occurs due to ethanol's inhibition of gluconeogenesis , especially in children, and may cause lactic acidosis , ketoacidosis and acute renal failure . Metabolic acidosis is compounded by respiratory failure. Patients may also present with hypothermia.

Pharmacology

In the past alcohol was believed to be a non-specific pharmacological agent, affecting many neurotransmitter systems in the brain. 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: GABAA|GABA_A , glycine , serotonin , nicotinic acetylcholine receptors .

Among those that are inhibited are: NMDA , dihydropyridine receptor|dihydropyridine-sensitive L-type Ca2+ channels and G protein-coupled inwardly-rectifying potassium channels|G-protein-activated inwardly rectifying K+ channels .

The result of these direct effects are 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.

Diagnosis

Definitive medical diagnosis|diagnosis relies on a blood test for alcohol, usually performed as part of a toxicology screen.

Law enforcement officers often use breathalyzer units and field sobriety test s as more convenient and rapid alternatives to blood tests. The reliability of field sobriety tests is somewhat questionable, although they are commonly used in various jurisdictions.
There are also various models of breathalyzer units that are available for consumer use. Because these may have varying reliability and may produce different results than the tests used for law-enforcement purposes, the results from such devices should be conservatively interpreted.

Many informal intoxication tests exist, which are generally 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 out other conditions such as hypoglycemia , stroke , usage of other intoxicants, mental health issues, and so on. It is best if their behavior has been observed while the subject is sober to establish a baseline. Several well known criteria can be used to establish a probable diagnosis. For a physician in the acute treatment setting, acute alcohol intoxication can mimic other acute neurological disorders, or is frequently combined with other recreational drug s that complicate diagnosis and treatment.

Epidemiology

Common causes for excessive alcohol consumption include:

alcoholism

depression

inexperience with the effects of alcohol

Alcohol poisoning

Signs and symptoms

The signs and symptoms of alcohol poisoning include:

confusion

vomiting

dangerous anger

seizures (fits)

slow breathing (fewer than eight breaths a minute)

pale, bluish skin

cold and clammy skin

Management

Emergency treatment for acute alcohol intoxication strives to stabilize the patient and maintain a patent airway and respiration, while waiting for the alcohol to metabolize:Devi, G., Castro, V. J., Huitink, J., Buitelaar, D., Kosten, T., O'Connor, P. (2003). Management of Drug and Alcohol Withdrawal. NEJM 349: 405-407
Also:

Protect vital signs by monitoring ABC (medicine)|ABCs, or Airway, Breathing, and Circulation ; that is, if the person is thought to be at risk for severe respiratory depression, consider an endotracheal tube to protect the airway and assist with breathing.

Protect the airway from aspirating stomach contents that could cause aspiration pneumonia .

Treat hypoglycaemia (low blood sugar) with 50ml of 50% dextrose solution and saline flush, as ethanol induced hypoglycaemia is unresponsive to glucagon.

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).

Check urea and electrolytes to guide fluid replacement.

Apply haemodialysis if the blood concentration is dangerously high (>400& nbsp;mg%), and especially if there is metabolic acidosis.

Provide oxygen therapy as needed via nasal cannula or non-rebreather mask.

Additional medicine|medication may be indicated for treatment of nausea , tremor , and anxiety .

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 succeed, provided the alcohol does not cause liver failure .Management of alcoholic hepatitis, Drug and Therapeutics Bulletin 2003;41:49-52;

People who have been drinking heavily for several days or weeks may have Alcohol withdrawal syndrome|withdrawal symptoms after the acute intoxication has subsided.DeBellis, R., Smith, B. S., Choi, S., Malloy, M. (2005). Management of Delirium Tremens. J Intensive Care Med 20: 164-173

A person who consumes a dangerous amount of alcohol persistently can develop memory blackouts and idiosyncratic intoxication or pathological drunkenness symptoms.Gelder, M., Mayou, R. and Geddes, J. 2005. Psychiatry. 3rd ed. New York: Oxford. pp.186.

Long-term persistent consumption of excessive amounts of alcohol can cause liver damage and have other deleterious health effects.

Society and culture

Legal

Laws on drunkenness vary between countries. In the United States , for example, it is a criminal offense for a person to be drunk while driving a motorized vehicle ( driving under the influence ), operating an aircraft, or (in some states) assembling or operating an amusement park ride. This is also the case in the United Kingdom and many other countries. In some countries it is also an offense to serve alcohol to an already intoxicated person and often alcohol can only be sold by staff qualified to serve responsibly through alcohol server training .

The Blood alcohol content#Limits by country (BAC: Blood Alcohol Content)|blood alcohol content (BAC) for legal operation of a vehicle is typically measured as a percent of unit volume of blood. This ranges from a low of 0.00% in Romania and the United Arab Emirates, to 0.05% in Australia, South Africa and Germany, to 0.08% in the United Kingdom, the United States, and New Zealand.

Additionally, the U.S. Federal Aviation Administration prohibits Aircrew member|crewmembers from performing their duties with a BAC greater than 0.04%, within 8 hours of consuming an alcoholic beverage or while under the influence of alcohol.

In the UK, US, and Australia, people can be arrested for public intoxication , being "drunk and disorderly" or being "drunk and incapable". There are also often legal penalties for the sale of alcoholic beverages to intoxicated persons.

In some jurisdictions, intoxication may be a Intoxication defense|defense against some criminal charges, or a mitigating factor in sentencing .

Religious views

Some religious groups permit the consumption of alcohol, some permit consumption but prohibit intoxication, and some prohibit alcohol consumption altogether. In the Qur'an , there is a prohibition on the consumption of grape -based alcoholic beverages, and intoxication is considered as an abomination in the Hadith . Islam ic schools of law ( Madh'hab ) have interpreted this as a strict prohibition of the consumption of all types of alcohol and declared it to be haraam ("forbidden"), although other uses may be permitted.

Some Protestantism|Protestant Christian denominations prohibit the Drinking#Alcoholic beverages|drinking of alcohol based upon Biblical passages which condemn drunkenness (for instance, Book of Proverbs|Proverbs 23:21, Book of Isaiah|Isaiah 28:1, Book of Habakkuk|Habakkuk 2:15.), but others allow moderate use of alcohol. In some Christian groups, wine is part of the rite of communion (see Christianity and alcohol ). However, in The Church of Jesus Christ of Latter-day Saints , alcohol consumption is forbidden, to the point where teetotalism has become a distinguishing feature of its members.

In Buddhism , the consumption of intoxicants is generally discouraged for both monastics and lay followers. Many followers of Buddhism observe a code of conduct known as the Five Precepts , of which the fifth precept prohibits consumption of intoxicating substances (except for medical reasons). In the Bodhisattva vows|Bodhisattva Vows of the Brahma Net Sutra, observed by some monastic communities and some lay followers, distribution of intoxicants is likewise discouraged as well as consumption.

In Vaishnavism , specifically Gaudiya Vaishnavism , one of the four regulative principles forbids the taking of intoxicants, including alcohol.

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