Clicking moves left

Enhanced Elimination in Toxicology

Enhanced Elimination in Toxicology Extracorporeal eliminationExtracorpore [...]

Decontamination in Toxicology

Decontamination in ToxicologyorHow to Decontamination in ToxicologySingle-dose [...]

Resuscitation in Toxicology

Resuscitation in ToxicologySupportive careInitial resuscitation should be based [...]

Key investigations of Toxicology

Key investigations of Toxicology In this topic: Electrocardiography Drug conce [...]

Arterial blood gases in Toxicology

Arterial blood gases in Toxicology Arterial blood gases are an important in [...]

Clicking moves right
M O V I E
TRAVELING
Pharmacology of Disopyramide
31 Mar 2012 0 comments

Pharmacology of Disopyramide Indication For the treatment of documented ventricular arrhythmias, such as [...]

Pharmacology of Ranolazine
31 Mar 2012 0 comments

Pharmacology of Ranolazine Indication For the treatment of chronic angina. It should be used in combinati [...]

Pharmacology of Milrinone
31 Mar 2012 0 comments

Pharmacology of Milrinone Indication Indicated for the treatment of congestive heart failure. Pharma [...]

Pharmacology of Midodrine
31 Mar 2012 0 comments

Pharmacology of Midodrine   Indication For the treatment of symptomatic orthostatic hypotension [...]

Pharmacology of Dofetilide
31 Mar 2012 0 comments

Pharmacology of Dofetilide  Indication For the maintenance of normal sinus rhythm (delay in time to [...]

GALLERY
Classification of Anxiety Disorders
10 Mar 2012 0 comments

Anxiety disorders may be classified asgeneralized anxiety disorder, panic disorder, obsessive-compu [...]

Post-Traumatic Stress Disorder
10 Mar 2012 0 comments

Post-Traumatic Stress DisorderPost-traumatic stress disorder develops following a traumatic event that elicit [...]

Social Anxiety Disorder
10 Mar 2012 0 comments

Social Anxiety DisorderSocial anxiety disorder, formerly known as social phobia, is characterized by an inten [...]

TOP LINE
Classification of Anxiety Disorders
10 Mar 2012 0 comments

Anxiety disorders may be classified asgeneralized anxiety disorder, panic disorder, obsessive-compulsive disorder, social anxiety disorder, post-traumatic stress disorder. Click to view each type....

Post-Traumatic Stress Disorder
Social Anxiety Disorder
Obsessive-Compulsive Disorder
Panic Disorder
Generalized Anxiety Disorder
REVIEW
Hormonal contraceptives
25 Apr 2011 0 comments

Hormonal contraceptivesHormonal contraceptives inhibit ovulation. Contraceptives typically contain a combination of hormones. Fo...

Erectile dysfunction therapy drugs

Erectile dysfunction therapy drugsErectile dysfunction therapy drugs treat penile erectile dysfunction that results from a lack ...

Urinary tract antispasmodics

Urinary tract antispasmodicsUrinary tract antispasmodics help decrease urinary tract muscle spasms. They include darifenacin, fl...

ANALYSIS
Pharmacology of Disopyramide
31 Mar 2012 0 comments

Pharmacology of Disopyramide Indication For the treatment of documented ventricular arrhythmias, such as sustained ventricul...

Pharmacology of Ranolazine

Pharmacology of Ranolazine Indication For the treatment of chronic angina. It should be used in combination with amlodipine, ...

Pharmacology of Milrinone

Pharmacology of Milrinone Indication Indicated for the treatment of congestive heart failure. Pharmacodynamics Milri...

HIGHLIGHT
[ more from label ]
Classification of Anxiety Disorders
Post-Traumatic Stress Disorder
Social Anxiety Disorder
Obsessive-Compulsive Disorder
Latest News Updates
PERFORMANCE
Pharmacology of Disopyramide
31 Mar 2012 0 comments

Pharmacology of Disopyramide Indication For the treatment of documented ventricular arrhythmias, such as ...

Pharmacology of Ranolazine
Pharmacology of Milrinone
FEATURE
Classification of Anxiety Disorders
10 Mar 2012 0 comments

Anxiety disorders may be classified asgeneralized anxiety disorder, panic disorder, obsessive-compu...

Post-Traumatic Stress Disorder
Social Anxiety Disorder
Home » , » Potassium
Potassium
Monday, September 19, 2011 Posted by Piscean


Potassium
Potassium is the major positively charged ion (cation) in ICF. Because the body can’t store potassium, adequate amounts must be ingested daily. If this isn’t possible, potassium replacement can be accomplished orally or I.V. with potassium salts, such as:
  • potassium acetate
  • potassium bicarbonate
  • potassium chloride
  • potassium gluconate
  • potassium phosphate.
Pharmacokinetics (how drugs circulate)
Oral potassium is absorbed readily from the GI tract.
Absorption, metabolism, and excretion
After absorption into the ECF, almost all of the potassium passes into the ICF. There, the enzyme adenosinetriphosphatase maintains the concentration of potassium by pumping sodium out of the cell in exchange for potassium.
Normal serum levels of potassium are maintained by the kidneys, which excrete most excess potassium intake. The rest is excreted in stool and sweat.

Pharmacodynamics (how drugs act)
Potassium moves quickly into ICF to restore depleted potassium levels and reestablish balance. It’s an essential element in determining cell membrane potential and excitability.
image
Feel nervous about potassium?
Potassium is necessary for proper functioning of all nerve and muscle cells and for nerve impulse transmission. It’s also essential for tissue growth and repair and for maintenance of acid-base balance.

Pharmacotherapeutics (how drugs are used)
Potassium replacement therapy corrects hypokalemia, low levels of potassium in the blood. Hypokalemia is a common occurrence in conditions that increase potassium excretion or depletion, such as:
  • vomiting, diarrhea, or nasogastric suction
  • excessive urination
  • some kidney diseases
  • cystic fibrosis
  • burns
  • excess of antidiuretic hormone or therapy with a potassium-depleting diuretic
  • laxative abuse
  • alkalosis
  • insufficient potassium intake from starvation, anorexia nervosa, alcoholism, or clay ingestion
  • administration of a glucocorticoid, I.V. amphotericin B, vitamin B12, folic acid, granulocyte-macrophage colony’stimulating factor, or I.V. solutions that contain insufficient potassium.
Be still my heart
Potassium decreases the toxic effects of digoxin. Because potassium inhibits the excitability of the heart, normal potassium levels moderate the action of digoxin, reducing the chances of toxicity.

Drug interactions
Potassium should be used cautiously in patients receiving potassium-sparing diuretics (such as amiloride, spironolactone, and triamterene) or angiotensin-converting enzyme inhibitors (such as captopril, enalapril, and lisinopril) to avoid hyperkalemia. 
Warning!
Adverse reactions to potassium
Most adverse reactions to potassium are related to the method of administration.

Oral history
Oral potassium sometimes causes nausea, vomiting, abdominal pain, and diarrhea. Enteric-coated tablets may cause small-bowel ulceration, stenosis, hemorrhage, and obstruction.
I.V. issues
I.V. infusion of potassium preparations can cause pain at the injection site and phlebitis (vein inflammation). Given rapidly, I.V. administration may cause cardiac arrest. Infusion of potassium in patients with decreased urine production increases the risk of hyperkalemia.

Piscean

Thanks for your visit..!

0 comments for "Potassium"

   

Leave a reply

    March - 2025
    SMTWTFS
          1
    2345678
    9101112131415
    16171819202122
    23242526272829
    3031