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how does lithium toxicity occur

by Douglas Morissette Published 2 years ago Updated 2 years ago
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Lithium is a prescription medicine used to treat bipolar disorder. This article focuses on lithium overdose, or toxicity. Acute toxicity occurs when you swallow too much of a lithium prescription at one time. Chronic toxicity occurs when you slowly take a little too much of a lithium prescription every day for a while.Nov 13, 2021

Full Answer

What happens if you overdose on lithium?

Untreated cases of lithium toxicity can also lead to permanent complications, such as brain damage, kidney damage, and serotonin syndrome. Can lithium cause permanent damage? Prolonged lithium intoxication >2 mM can cause permanent brain damage. Lithium has low mutagenic and carcinogenic risk.

What are the symptoms of too much lithium?

What are the signs and symptoms of severe lithium toxicity?

  • Blurred vision
  • Severe muscle spasms
  • Seizures
  • Coma

What are the side effects of lithium overdose?

They include:

  • Headache
  • Nausea or vomiting
  • Dizziness or drowsiness
  • Diarrhea
  • Changes in appetite
  • Hand tremors
  • Dry mouth
  • Increased thirst
  • Increased urination
  • Thinning of hair or hair loss

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What can cause high lithium levels?

Volume depletion from diuretics, dehydration, febrile illness, or gastrointestinal loss can lead to elevated lithium levels in the serum.

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What causes toxicity in lithium?

The chronic form of lithium toxicity can occur when you take lithium daily but your serum blood level has crept up into the toxic range. 1 Possible causes for this level increase are a dosage increase, being dehydrated, interactions with other medications, and problems with kidney function.

What puts you at risk for lithium toxicity?

Among cohorts of patients hospitalized for lithium toxicity, risk factors for lithium toxicity include older age and factors that lead to disturbances in renal blood flow and water-salt homeostasis, such as fever, diarrhea or vomiting, and use of nonsteroidal anti-inflammatory drugs (NSAIDs), diuretics, and renin- ...

What are the 3 main symptoms of lithium toxicity?

Symptoms of lithium toxicity include severe nausea and vomiting, severe hand tremors, confusion, and vision changes. If you experience these, you should seek immediate medical attention to check your lithium levels.

How long does it take to recover from lithium toxicity?

Patients with whole body stores and an acute ingestion (acute-on-chronic toxicity) or chronic toxicity often take days to weeks to completely recover clinically. Neurotoxicity may be irreversible after acute or chronic toxicity. Elimination half-life in toxicity varies widely (average 12.9 – 50.1 hr).

What drugs increase lithium toxicity?

Drugs that alter renal function can increase the risk for chronic lithium toxicity (2, 17, 18). Among these, ACE inhibitors, NSAID, and thiazide diuretics increase the reabsorption of lithium and result in increased serum lithium concentrations (Table 4).

How can you prevent lithium toxicity?

Lithium intoxication can be avoided by conservative dosing, care in combining drug therapies, regular clinical observation, monitoring drug plasma concentrations, and educating patients and caregivers to recognize early signs of intoxication.

Is lithium toxicity reversible?

Most often, lithium neurotoxicity is reversible but sometimes may be irreversible. Reversible lithium neurotoxicity has been defined as cases of lithium neurotoxicity in which patients recovered without any permanent neurologic sequelae, even after 2 months of an episode of lithium toxicity.

What does a lithium overdose look like?

Neurological symptoms: Neurological symptoms are predominant in cases of chronic lithium toxicity. These often include increased reflexes, slurred speech, tremors (particularly in the hands), problems with memory, and psychotic behavior (disturbed thought processes, hallucinations, and/or delusions).

What drugs should not be taken with lithium?

The most commonly prescribed drugs that have the potential to interact with lithium are ACE inhibitors, angiotensin II receptor antagonists (sartans), diuretics, and non-steroidal anti-inflammatory drugs (NSAIDs).

How many mg of lithium is fatal?

The treatment serum level range is 0.8-1.2 mmol/L, but Lithium levels above 1.2 mmol/L can be toxic and a level above 2.0 mmol/L is potentially fatal.

How do you test for lithium toxicity?

A lithium test is used to evaluate the concentration of lithium in the blood. Knowing how much lithium is in the blood is important for diagnosing lithium poisoning and monitoring the health of people who take lithium as a medical treatment for bipolar disorder and other mental health conditions.

What Is Lithium Toxicity?

Lithium toxicity happens when the amount of lithium in your blood is too high. Lithium is a medicine that is used to treat depression and bipolar d...

What Causes Lithium Toxicity?

Toxicity can occur if you take a large dose of lithium at one time. Toxicity can also be caused by taking a slightly higher dose of lithium over ti...

What Are The Signs and Symptoms of Mild to Moderate Lithium Toxicity?

1. Nausea and vomiting 2. Abdominal pain or diarrhea 3. Shakiness, especially in your hands 4. Muscle weakness 5. Lack of coordination of fingers,...

How Do I Safely Take Lithium?

1. Take this medicine exactly as directed. Contact your healthcare provider if you miss a dose or you have any questions about how to take lithium....

When Should I Seek Immediate Care?

1. You are confused. 2. You are having trouble staying awake. 3. You have signs of dehydration such as increased thirst, dark yellow urine, urinati...

When Should I Contact My Healthcare Provider?

1. You have nausea, vomiting, abdominal pain, or diarrhea. 2. You are shaky. 3. Your muscles feel weak. 4. You have questions or concerns about you...

Why is lithium toxic?

Causes. Lithium toxicity occurs when too much lithium builds up in the bodily tissues or blood. Lithium helps stabilize mood through its effects on the balance of brain chemicals called neurotransmitters, which include serotonin, norepinephrine, and dopamine.

What happens if you take too much lithium?

It can also develop when the body does not excrete lithium properly.

What is the term for a person who takes lithium in the long term?

Chronic lithium toxicity. Chronic toxicity occurs when a person who takes lithium in the long term undergoes a change in how their body eliminates or absorbs lithium. Other medical conditions, especially kidney conditions, are usually responsible for this change.

How do you know if you have lithium in your system?

Symptoms. A person with mild or moderate lithium toxicity may experience nausea or vomiting. The symptoms of lithium toxicity generally relate to how much lithium is in the person’s blood and bodily tissues. Typically, higher blood lithium levels will result in symptoms that are more numerous and severe. However, the symptoms or degree of toxicity ...

How long does it take for lithium to heal?

Most people who recognize the signs and symptoms of lithium toxicity early and seek treatment recover fully. In chronic cases, it may take weeks to months for the symptoms to resolve.

How long does lithium last?

The reason for this is that lithium accumulates in the bodily tissues. Chronic accumulation also means that symptoms can last for days, weeks, or even months after the person stops taking lithium, as it takes time to leave the bodily tissues. Lithium tends to accumulate the most in the brain and kidneys.

How much lithium is in the blood?

The standard therapeutic range for serum lithium levels normally falls between 0.6 and 1.2 mEq/l.

What are the three major categories of lithium toxicity?

Lithium toxicity can be classified into three major categories: Acute overdose in a lithium-naive patient [9]. Acute overdose in a patient on chronic therapy (acute-on-chronic)[29]. Chronic over-medication or drug accumulation (associated with the most serious toxicity) [30].

Where is lithium most likely to accumulate?

Lithium is more susceptible to accumulation in liver, bone, muscle, or thyroid with brain and kidney showing the highest levels[13].

How often should lithium be measured in serum?

Serial levels of lithium in the serum should be obtained every 6 hours in case of asymptomatic patients after an acute ingestion. This should be continued until a descending drift has been established.

How long after lithium is taken to test?

Lithium serum levels normally range from approximately 0.6 to 1.2 mEq/L. Measurement of the serum levels should be carried out at least 6 to 12 hours after the last therapeutic dose to avoid misinterpretation of pre-distributional levels.

What is the best way to remove lithium from a patient?

The most appropriate method of lithium removal is hemodialysis, particularly if the patient demonstrates signs and symptoms of severe lithium poisoning or is having a renal failure due to its small volume of distribution and marginal protein binding [28].

How long does lithium stay in the blood?

The serum elimination half-life of lithium can vary from 12 to 27 hours. In patients with chronic intoxication, the half-life can be prolonged up to 48 hours[15].

When was Lithium water first used?

In the late 1800s , lithia water was first introduced as a mania and gout treatment [17]. Afterward, lithium tablets with higher lithium concentration largely replaced lithia water. However, the higher lithium concentration found in the tablets was associated with tremors and weakness, and in 1898 lithium toxicity was first described. To determine the extent of lithium toxicity, one must determine the ingested amount, time of ingestion, whether there are co-ingestants, and if the ingestion was intentional or unintentional. It is worth noting that lithium toxicity signs do not often conform to the measured lithium level[18].

What is lithium toxicity?

Lithium toxicity happens when the amount of lithium in your blood is too high. Lithium is a medicine that is used to treat depression and bipolar disorder.

How to reduce lithium toxicity?

Dehydration can increase your risk of lithium toxicity. Do not decrease the amount of salt you eat without talking to your healthcare provider. A decreased salt intake can increase your risk of lithium toxicity.

How do I safely take lithium?

Take this medicine exactly as directed. Contact your healthcare provider if you miss a dose or you have any questions about how to take lithium.

Can sodium cause lithium to build up in blood?

It can also occur if you are dehydrated, or you take medicines that cause lithium to build up in your blood. These medicines may include NSAIDs, certain blood pressure medicines, and medicines used to treat epilepsy. A decreased intake of sodium (salt) can also lead to lithium toxicity.

How to tell if lithium is toxic?

If you experience these, you should seek immediate medical attention to check your lithium levels .

What are the symptoms of lithium poisoning?

Uncontrollable urination and bowel movements. A lightheaded or drowsy feeling. Confusion and blackouts. Shaking, muscle weakness, twitches, jerks, or spasms affecting your face, tongue, eyes, or neck. Trouble speaking. Lithium toxicity mostly affects your kidneys and central nervous system.

What is the effect of lithium on the kidneys?

Lithium toxicity mostly affects your kidneys and central nervous system. In acute lithium toxicity, your GI tract will be affected too. In more severe cases, you may experience neurological or cardiovascular problems. In early lithium toxicity, you may have mild confusion.

What is lithium used for?

Lithium is commonly prescribed by psychiatrists to manage recurrent bipolar illness. Lithium was approved in the 1970s by the U.S. Food and Drug Administration (FDA) as a mood stabilizer and a treatment for mania. Lithium is a powerful medication that has antimanic properties.

Can lithium poisoning cause thirst?

Left untreated, lithium toxicity can progress and worsen. Lithium poisoning can be life-threatening and should be monitored and treated promptly.

Can lithium be used for bipolar?

You may take lithium as a treatment for bipolar disorder. It’s the most common form of treatment for this condition. Lithium toxicity can be caused by underlying health issues, changes to medication, or incorrect dosage.

Can lithium cause diabetes?

As the toxicity worsens, you may feel delirious or even have seizures or go into a coma. In very rare cases, lithium toxicity may cause diabetes insipidus. This condition leads to large amounts of urine in your body, regardless of how much fluid you drink. You’ll also experience a significant amount of thirst.

Why is lithium toxic?

Lithium toxicity can occur due to excessive intake or decreased excretion. Excessive intake may be either a suicide attempt or accidental. Decreased excretion may occur as a result of dehydration such as from vomiting or diarrhea, a low sodium diet, or from kidney problems.

What are the symptoms of lithium toxicity?

Acute toxicity. In acute toxicity, people have primarily gastrointestinal symptoms such as vomiting and diarrhea, which may result in volume depletion. During acute toxicity, lithium distributes later into the central nervous system causing dizziness and other mild neurological symptoms.

What is the best treatment for lithium poisoning?

Hemodialysis. Hemodialysis is widely advocated as a means of reducing the risk of permanent neurological sequelae following lithium poisoning. Although hemodialysis clearly enhances the elimination of lithium, it is unclear whether this translates into improved patient outcomes.

What is the procedure to remove lithium from the body?

Gastric lavage. A tube is placed through the nose or mouth into the stomach. The tube is used to remove lithium that has not been digested yet. It may also be used to put medicines directly into the stomach to help stop lithium from being absorbed.

Where is lithium absorbed?

Lithium is readily absorbed from the gastrointestinal tract. It is distributed to the body with higher levels in the kidney, thyroid, and bone as compared to other tissues. Since lithium is almost exclusively excreted by the kidneys, people with preexisting chronic kidney disease are at high risk of developing lithium intoxication. Lithium toxicity can be mistaken for other syndromes associated with antipsychotic use, such as serotonin syndrome because lithium increases serotonin metabolites in the cerebrospinal fluid.

How long after lithium is given can you test blood?

The diagnosis is generally based on symptoms and supported by a lithium level blood level. Blood levels are most useful six to twelve hours after the last dose. The normal serum lithium level in those on treatment is between 0.6-1.2 mEq/L.

What is the condition of having too much lithium?

Lithium toxicity. Lithium toxicity, also known as lithium overdose, is the condition of having too much lithium. Symptoms may include a tremor, increased reflexes, trouble walking, kidney problems, and an altered level of consciousness. Some symptoms may last for a year after levels return to normal.

Why is lithium toxic?

1  Possible causes for this level increase are a dosage increase, being dehydrated, interactions with other medications , and problems with kidne y function.

How to treat lithium toxicity?

2  In all cases, intravenous (IV) fluids will be administered to make sure you're not dehydrated and to help move the lithium out of your system. Serum Blood Level Test to Prevent Toxic Levels of Medication.

What are the symptoms of lithium poisoning?

Unlike in acute lithium poisoning, people with chronic lithium toxicity are much less likely to have stomach and intestinal problems and instead usually present with neurologic symptoms first, such as: 1 . Slurred speech. Drowsiness.

What is the therapeutic lithium level?

A therapeutic lithium level is somewhere between 0.6 to 1.2 milliequivalents per liter (mEq/L). When your level gets to 1.5 mEq/L or more, symptoms of toxicity begin to show up.

What happens if you take lithium too much?

Acute-on-Chronic Toxicity. When you regularly take lithium and you accidentally or deliberately take a higher dose than prescribed , this results in acute-on-chronic toxicity . Because the levels in your blood that make lithium effective and the levels that make it toxic are so close, the additional amount that causes acute-on-chronic toxicity ...

How long do you have to stay in the hospital for lithium?

When you're admitted to the hospital with lithium toxicity, you'll need to stay until your symptoms are gone and your lithium serum level is below 1.5 mEq/L. Most people recover from lithium toxicity without problems. 1 

How to find out when lithium was taken?

If you are having suicidal thoughts, contact the National Suicide Prevention Lifeline at 1-800-273-8255 for support and assistance from a trained counselor. If you or a loved one are in immediate danger, call 911.

Why is lithium toxic?

This is actually quite easy to do, because dehydration, other medicines, and other conditions can easily affect how your body handles lithium. These factors can make the lithium build up to harmful levels in your body.

What are the symptoms of lithium toxicity?

Symptoms. Symptoms of the three types of lithium toxicity are described below. ACUTE TOXICITY. Common symptoms of taking too much lithium at one time include: Nausea. Vomiting. Diarrhea. Stomach pains. Dizziness.

What is lithium used for?

Lithium is a prescription medicine used to treat bipolar disorder. This article focuses on lithium overdose, or toxicity. Acute toxicity occurs when you swallow too much of a lithium prescription at one time. Chronic toxicity occurs when you slowly take a little too much of a lithium prescription every day for a while.

How to contact poison center?

If you or someone you are with has an exposure, call your local emergency number (such as 911), or your local poison center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States.

How to flush lithium?

Whole bowel irrigation with a special solution taken by mouth or through a tube through the nose into the stomach ( to flush sustained-release lithium quickly through the stomach and intestines)

What causes shaking when taking salts?

Drinking a lot of fluids. Urinating more or less than normal. Memory problems . Movement disorders, muscle twitches, hand tremors. Problems keeping salts in your body.

Does lithium cause long term complications?

People who do not develop nervous system symptoms usually do not have long-term complications. If serious nervous system symptoms occur, these problems may be permanent.

Why does lithium accumulate?

The patient is taking their usual lithium dose, but lithium accumulates (usually due to renal dysfunction ). The clinical course is usually dominated by neurologic symptoms. Gastrointestinal symptoms will typically be absent (the patient didn't ingest a lot of lithium).

Why is lithium the scariest form of intoxication?

This is perhaps the scariest form of intoxication, because there is already a lot of lithium in the tissue before the acute ingestion. Furthermore, there is a risk of acute decompensation as tissue levels elevate further. This is the most common form of intoxication.

How often should you check lithium levels?

when to obtain levels & how often. Lithium levels should be checked whenever a patient on lithium is admitted to the hospital, or whenever lithium intoxication is a possibility. In acute or acute-on-chronic ingestion, lithium levels should be followed over time. Levels should be cycled q2-4 hours until they peak.

What are the different forms of lithium intoxication?

Large ingestion in a previously lithium-naive patient. Usually presents with gastrointestinal symptoms (ingested lithium acts directly as a gastrointestinal irritant). Neurological symptoms may occur several hours later, in a delayed fashion. Acute-on-chronic.

Where is lithium excreted?

Lithium is excreted by the kidneys. It is handled similarly to sodium, with reabsorption occurring largely in the proximal tubule. Anything which stimulates the kidneys to retain sodium (e.g., volume depletion) will cause the kidneys to likewise retain lithium as well.

Can you measure lithium levels in green top tubes?

Don't measure lithium levels in green-top tubes containing lithium heparin. This will artificially increase the lithium level. ( 18072115)

Does lithium cause leukocytosis?

Chronic lithium use causes a leukocytosis. Lithium level (including repeat levels as discussed below). Thyroid stimulating hormone (chronic lithium use is associated with hypothyroidism). Calcium level (chronic lithium use is associated with hyperparathyroidism).

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