Sunday 29 November 2020

Neurology / Metabolic Medicine Made Simple : MANAGEMENT OF ALCOHOLIC PATIENT WITH CONFUSION AND CHRONIC MANIFESTATIONS:

 MANAGEMENT  OF ALCOHOLIC PATIENT WITH CONFUSION AND CHRONIC MANIFESTATIONS:

If patient has an history of Chronic alcohol intake or malnourishment and is hypoglycemic , patient should be given iv Thiamine before glucose to prevent development of Wernicke”s Encephalopathy.

This is achieved by giving two pairs of ampoules of high potency Thiamine ( Pabrinex)  intravenously.

Specific management depends upon the cause and diagnosis.

If patient has Acute on Chronic liver failure  related to alcohol , note the following :

Hypovolemia and electrolyte disturbance :

Hypoglycemia :

Give intravenous glucose to maintain finger prick glucose  more than 3.5 mmol/l 

Patient may need continuous infusion of 10 % dextrose but only after administration of thiamine.

Hypovolemia :

Give colloid rather than the  0.9 % normal saline

Hypokalemia 

Give intravenous potassium can be added 20 mmol ampoule in colloid.

Hyponatremia :

This is common and occur  due to water excess  and not sodium deficiency , hence should be treated with water restriction and not 0.9 % saline.

Hypophosphatemia :

Start intravenous or oral phosphate replacement  therapy.

Feeding and  Gastric protection :

Nasogastric tube : Adequate nutrition is important

Medications can be administered by this route

Ranitidine 50 mg iv tds to reduce risk of stress ulcers.

Reduction of Intestinal nitrogenous load:

Start lactulose 20 – 30 ml or lactilol 10 g tds reducing the dose when diarrhea starts.

Phosphate enema should be administered.

Neomycin or metronidazole  should be given if patient is poorly responsive or comatose.

Coagulopathy :

Vitamin K should be given orally or intravenously .

In case of active bleeding , patient may be given Fresh frozen plasma or platelets.

Underlying Infections :

A broad spectrum antibiotic maybe given in case of suspected sepsis / infection of unknown origin.

This includes : Intravenous Ceftriaxone 2 Gm iv OD or Cefotaxime iv 2 Gm OD.

Bacterial peritonitis may occur in 25 % patients with Cirrhotic ascites.

Vitamin Supplementation:

Vitamin B and C are usually given in chronic alcoholics.

In case of impaired consciousness , give in Pabrinex / Thiamine 2 – 3 pairs  of ampoules 8 hourly.

If patient can take orally , oral thiamine 50 mg  once a  day and vitamin B compound tablets strong ( 1-2 tablets tds ) and vitamin C once a day may be given.

Anticipate and Treat Complications :

The development of complications  indicates a very poor prognosis.

This issue needs  discussion with senior colleagues depending on the individual case as  escalation of treatment may be inappropriate and futile.

Hepatorenal failure

Renal failure is a common complication of hepatic failure in Alcoholic patients.

It usually occurs secondary to Acute Tubular Necrosis.

Prognosis of hepatorenal  failure is very poor.

Cerebral oedema is another sinister complication .

Mannitol can be given 200 mg/kg iv slowly.

Intracranial pressure monitoring maybe useful but not available in all centres.

Alcohol withdrawal and delirium tremens

Acute alcohol withdrawal is common.

It usually causes tremors and confusion after  8 – 24 hours and settles after 48 hours.

Delirium tremens:

This is are but can be fatal if untreated.

It causes termors,confsuin, visual hallucinations , fever and  sweating.

It usually occurs  afer 3 -4 days of stopping drinking.

Aside from supportive measures, give vitamins , treat hypoglycemia and prescribe sedation.

If patient can tolerate  oral therapy , give chlordiazepoxide  30 mg four times a day on day 1 then treat with lowering doses.

If patient is severely agitated and cannot tolerate oral medications , give intravenous  chlormethiazole 0.8 % solution at  rate of 20 – 60 mg / min until a shallow sleep from which patient can be easily aroused is induced.

Then reduce rate to lowest possible to maintain shallow sleep and normal spontaneous respiration.

Chlormethiazole can cause respiratory depression so sgould be administered carefully.

Patient should be closely monitored and full resuscitation facilities should be made available.



Saturday 28 November 2020

Neurology Made Simple : Assessment & Investigations of Confusion in Alcoholic / Other patients

 Assessment of Confusion in Alcoholic / Other patients

Evaluate the score using GCS : Glasgow Coma Scale

Evaluate the score using AMT : Abbreviated Mental  Test


An accurate history from the patient may be difficult so ensure a proper collateral history.

Examination

Does the patient smell of alcohol

Any presence of fetor hepaticus that occurs in Chronic Liver Disease ?

Presence of hepatic flap ?

Any signs of Chronic Liver Disease ?

What is the nutritional status of patient ? Mal-nourished ?

Wasted

Abdomen exam GIT Examination

Any Ascites ?

Look for presence of spider naevi and caput medusa

Any hepatomegaly or splenomegaly ?

Any pain in abdomen in ascetic patient which would be indicative of Spontaneos bacterial peritonitis.

These signs should be looked for to exclude hepatic encephalopathy.

Neurological Examination :

Look for any evidence of head injury bruising etc.

Examine pupil sizes.

Any inequality of pupils is suggestive of sub dural or extra dural haematoma.

Look for any abnormal eye movements : This maybe seen in Wernickes encephalopathy .

Eg there may be presence of vertical nystagmus , horizontal nystagmus and weakness of eye abduction.

Look for presence of ataxia which may be seen in Wernickes encephalopathy.

Investigations 

Finger prick testing of blood glucose to exclude hypoglycemia.

FBC / Full Blood Count 

Coagulation Screen

Electrolytes

Renal profile

Liver profile

Inflammatory markers ( CRP and ESR and White Cell counts )

Blood cultures and urine cultures in case of pyrexia

Chest X ray to look for any pneumonic consolidation or fractured ribs or pneumothorax.

In case of ascites : perform an ascetic tap to diagnose for spontaneous bacterial peritonitis.

ABGs / Arterial blood gases

CT scan of head

Serum amylase.



Friday 27 November 2020

Causes of confusion in an Alcoholic Patient

 Causes of confusion in an Alcoholic Patient


Alcohol related causes :

Alcohol overdose / intoxication

Acute alcohol withdrawal

Delirium tremens

Wernickes encephalopathy

Acute on chronic liver failure :

Hypoglycemia

Hepatic encephalopathy

Cerebral / CNS causes :

Sub dural haematoma

Post ictal

Other causes

Sepsis

Hypothermia

Systemic diseases

Thursday 5 November 2020

Metabolic Medicine Made Simple : HYPERCALCEMIA : SIGNS & SYMPTOMS , COMPLICATIONS , INVESTIGATIONS & MANAGEMENT

 HYPERCALCEMIA : SIGNS & SYMPTOMS , COMPLICATIONS , INVESTIGATIONS & MANAGEMENT

Signs and symptoms of hypercalcemia

These range from nonexistent to severe. Treatment depends on the cause.

Symptoms

There maybe no symptoms if  hypercalcemia is mild. 

More-severe cases produce signs and symptoms related to the parts of the body affected by the high calcium levels in the blood. 

Examples include:

Kidneys. 

Excess calcium makes kidneys work harder to filter it. 

This can cause excessive thirst and frequent urination.

Digestive system. 

Hypercalcemia can cause stomach upset, nausea, vomiting and constipation.

Bones and muscles.

 In most cases, the excess calcium in the blood comes from bone resorption. This causes weakness of bones. This can cause bone pain and muscle weakness.

Brain

Hypercalcemia can interfere with normal functioning of the brain resulting in confusion, lethargy and fatigue. It can also cause depression.

Heart

Rarely, severe hypercalcemia can interfere with heart function, causing palpitations and fainting, indications of cardiac arrhythmia, and other heart problems.

Complications

Hypercalcemia complications can include:

Osteoporosis

 If bone resorption continues,this releases calcium into the blood, and can lead toosteoporosis, which could lead to bone fractures, spinal column curvature and loss of height.

Kidney stones

 If urine contains too much calcium, crystals might form in  kidneys. Over time, the crystals can combine to form kidney stones. Passing a stone can be extremely painful.

Kidney failure

Severe hypercalcemia can damage kidneys, limiting their ability to cleanse the blood and eliminate fluid.

Nervous system problems

Severe hypercalcemia can lead to confusion, dementia and coma, which can be fatal.

Abnormal heart rhythm (arrhythmia) 

Hypercalcemia can affect the electrical impulses that regulate  heartbeat, causing  heart to beat irregularly.

Diagnosis

Because hypercalcemia can cause few, if any, signs or symptoms, it may go un noticed  until routine blood tests reveal a high level of blood calcium. 

Blood tests can also show if parathyroid hormone level is high, indicating that patient will have hyperparathyroidism.

To determine if hypercalcemia is caused by a disease such as cancer or sarcoidosis, imaging  of bones or lungs may be needed

More Information can be obtained by

Chest X-rays

CT scan

Mammogram

Treatment

If your hypercalcemia is mild, watch and wait policy may be adopted, monitoring  bones and kidneys over time to be sure they remain healthy.

For more severe hypercalcemia, medications or treatment of the underlying disease, including surgery may be considered.

Medications

Calcitonin (Miacalcin) 

This hormone from salmon controls calcium levels in the blood. Mild nausea might be a side effect.

Calcimimetics

 This type of drug can help control overactive parathyroid glands. Cinacalcet (Sensipar) has been approved for managing hypercalcemia.

Bisphosphonates

Intravenous osteoporosis drugs, which can quickly lower calcium levels, are often used to treat hypercalcemia due to cancer. 

Risks associated with this treatment include breakdown (osteonecrosis) of the jaw and certain types of thigh fractures.

Denosumab  

This drug is often used to treat people with cancer-caused hypercalcemia who don't respond well to bisphosphonates.

Prednisone

Ifhypercalcemia is caused by high levels of vitamin D, short-term use of steroid pills such as prednisone are usually helpful.

IV fluids and diuretics. 

Extremely high calcium levels can be a medical emergency that might need hospitalization for treatment with IV fluids and diuretics to promptly lower the calcium level to prevent heart rhythm problems or damage to the nervous system.

Surgical and other procedures

Problems associated with overactive parathyroid glands often can be cured by surgery to remove the tissue that's causing the problem. 

In many cases, only one of a person's four parathyroid glands is affected. 

A special scanning test uses an injection of a small dose of radioactive material to pinpoint the gland or glands that aren't working properly.


Tuesday 3 November 2020

METABOLIC MEDICINE MADE SIMPLE : HYPERCALCEMIA ,DEFINITION , CASUES & MECHANISM

 HYPERCALCEMIA

Hypercalcemia is a condition in which the calcium level in the  blood is above normal.

Too much calcium in blood can weaken  bones, create kidney stones, and interfere with normal heart and brain work.

MECHANISM OF HYPERCACEMIA

Hypercalcemia is usually a result of overactive parathyroid glands. These four tiny glands are situated in the neck, near the thyroid gland.

Other causes of hypercalcemia include cancer, certain other medical disorders, some medications, and taking too much of calcium and vitamin D supplements.

Besides building strong bones and teeth, calcium helps muscles contract and nerves transmit signals. Normally, if there isn't enough calcium in blood, the parathyroid glands secrete a hormone that triggers:

Bones to release calcium into the blood

The digestive tract to absorb more calcium

The kidneys  excrete less calcium and activate more vitamin D, which plays a vital role in calcium absorption

This delicate balance between too little calcium in  blood and hypercalcemia can be disrupted by a variety of factors.

CAUSES

Hypercalcemia is caused by:

Overactive parathyroid glands (hyperparathyroidism)

This most common cause of hypercalcemia can stem from a small, noncancerous (benign) tumor or enlargement of one or more of the four parathyroid glands.

Cancer

Lung cancer and breast cancer, as well as some blood cancers, can increase  risk of hypercalcemia. Spread of cancer (metastasis) to bones also increases risk.

Other diseases

Certain diseases, such as tuberculosis and sarcoidosis, can raise blood levels of vitamin D, which stimulates the digestive tract to absorb more calcium.

Hereditary factors

A rare genetic disorder known as familial hypocalciuric hypercalcemia causes an increase of calcium in the blood because of faulty calcium receptors in body.

Immobility

People who have a condition that causes them to spend a lot of time sitting or lying down can develop hypercalcemia. Over time, bones that don't bear weight release calcium into the blood.

Severe Dehydration

A common cause of mild or transient hypercalcemia is dehydration. Having less fluid in  blood causes a rise in calcium concentrations.

Medications

Certain drugs — such as lithium, used to treat bipolar disorder — might increase the release of parathyroid hormone.

Supplements

Taking excessive amounts of calcium or vitamin D supplements over time can raise calcium levels in your blood above normal.