Metabolic acidosis causes

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ogheneochuko Ajari, MB.BS, MS [2]

Overview

Metabolic acidosis is a state in which the blood pH is low (less than 7.35) due to an increased blood concentration of H+.

Causes

Life Threatening Causes

• Diabetic ketoacidosis
• Ethylene Glycol poisoning
• Lactic acidosis
• Methanol

Common Causes

Normal Anion Gap (Hyperchloremic Acidosis)

The mnemonic for the most common causes of a normal-anion gap metabolic acidosis is "DURHAM."

• D- Diarrhea

• U- Ureteral diversion

• R- Renal tubular acidosis

• H- Hyperalimentation

• A- Addison's disease, acetazolamide, ammonium chloride

• M- Miscellaneous (congenital chloride diarrhea, amphotericin B, toluene

High Anion Gap

The mnemonic "MUDPILES" is used to remember the causes of a high anion gap.

• M - Methanol/Metformin
  
• U - Uremia
  
• D - Diabetic ketoacidosis
  
• P - Paraldehyde/Propylene glycol
  
• I - Infection/Ischemia/Isoniazid
  
• L - Lactate
  
• E - Ethylene glycol/Ethanol
  
• S - Salicylates/Starvation

Causes by Organ System

Cardiovascular	Aortic arch interruption, Fanconi-Albertini-Zellweger syndrome, hypoplastic left heart syndrome, shock
Chemical / poisoning	aldicarb, 4-aminopyridine, ammonium bifluoride, ammonium chloride, aristolochic acid , borates, bromophos, carbaryl, chloralose, chlorfenvinphos, chlorpyrifos, cleistanthus collinus, clove, coumaphos, cyanides, demeton-S-methyl, diazinon, 1,2-Dibromoethane, dichlorvos, dicrotophos, dinitrophenol, dioxathion, disulfoton, ethanol, ethion, ethylene glycol, fensulfothion, fenthion, glycol ether, glyphosate, imazapyr, iron compounds, malathion, margosa oil, metaldehyde, methanol, methidathion, methiocarb, methomyl, monochloroacetate, parathion, phenol, phosdrin, polyethylene glycol , profenofos, propoxur, propylene glycol, pyrimidifen, salicylate poisoning, strychnine, terbufos, tetraethyl pyrophosphate, toluene, toxic mushrooms , triethylene glycol, tungsten
Dermatologic	No underlying causes
Drug Side Effect	Abacavir, acetazolamide, amitriptyline, amlodipine, amoxapine, amphotericin B, aspirin, cholestyramine, clomipramine, clove, cocaine, desipramine, didanosine, doxepin, emtricitabine, felodipine , formoterol, imipramine, isoniazid, isradipine, malignant hyperpyrexia, malignant hyperthermia, metformin, neuroleptic malignant syndrome, nifedipine, nimodipine, nitroprusside, nortriptyline, paracetamol, phenformin, protriptyline, Reye's syndrome, salicylate poisoning, stavudine, trimipramine
Ear Nose Throat	No underlying causes
Endocrine	Adrenal cortex insufficiency, 17- beta-hydroxysteroid dehydrogenase deficiency, diabetes, diabetic ketoacidosis, glucocorticoid resistance, hyperosmolar non-ketotic diabetic coma, hypoaldosteronism, lipoid congenital adrenal hyperplasia, pseudohypoaldosteronism, VIPoma
Environmental	No underlying causes
Gastroenterologic	Acute liver failure, bacterial overgrowth of small intestine, biliary fistula, congenital chloride diarrhea, diarrhea, duodenal atresia, GI HCO3- loss, hepatic failure, intestinal fistulas, intestinal ischaemia, lactose intolerance, necrotizing enterocolitis, pancreatic fistula, VIPoma
Genetic	17- beta-hydroxysteroid dehydrogenase deficiency, biotinidase deficiency, coenzyme Q10 deficiency, congenital chloride diarrhea, cystinosis, dihydrolipoamide dehydrogenase deficiency, fructose-1, 6-diphosphatase deficiency, ethylmalonic encephalopathy, Fanconi-Albertini-Zellweger syndrome, fructose-1-phosphate aldolase deficiency, galactosemia, glucose transporter type 1 deficiency, glutaric aciduria, glutathione synthetase deficiency, glycerol kinase deficiency, glycogenosis, GRACILE syndrome, Hawkinsinuria, hepatocerebral form of mitochondrial DNA depletion syndrome, HMG-CoA lyase deficiency, holocarboxylase synthase deficiency, 3-hydroxyacyl-coenzyme A dehydrogenase deficiency, 3 hydroxyisobutyric aciduria, isovaleric acidaemia, lipoid congenital adrenal hyperplasia, long chain hydroxyacyl-CoA dehydrogenase deficiency, Lowe syndrome, Lutz-Richner and Landolt syndrome, malignant hyperpyrexia, malignant hyperthermia, malonyl-CoA decarboxylase deficiency, maple syrup urine disease, medium chain acyl-CoA dehydrogenase deficiency, medullary cystic kidney disease, MELAS, MERRF, 3-methylcrotonyl-CoA carboxylase deficiency, 3-methylglutaconic aciduria, methylmalonic acidemia, microcephaly, Amish type, mitochondrial acetoacetyl-CoA thiolase deficiency, mitochondrial aspartyl-tRNA synthetase deficiency, molybdenum cofactor deficiency, myopathy with deficiency of succinate dehydrogenase and aconitase, nephronophthisis, osteopetrosis with renal tubular acidosis, phosphoglucomutase deficiency, propionic acidemia, propionyl-CoA carboxylase deficiency, pseudohypoaldosteronism, pyruvate carboxylase deficiency, pyruvate dehydrogenase deficiency, Senior-Loken syndrome, short-chain acyl-coenzyme A dehydrogenase deficiency, succinyl-CoA acetoacetate transferase deficiency, succinyl-CoA synthetase deficiency, vitamin B12-responsive methylmalonic acidemia
Hematologic	Myeloma
Iatrogenic	Hyperalimentation, malignant hyperpyrexia, malignant hyperthermia, Reye's syndrome, short bowel syndrome, ureteral diversion, ureterosigmoidostomy
Infectious Disease	No underlying causes
Musculoskeletal / Ortho	Myopathy with deficiency of succinate dehydrogenase and aconitase, osteopetrosis with renal tubular acidosis
Neurologic	Leigh syndrome, Lowe Syndrome, microcephaly, Amish type
Nutritional / Metabolic	17- beta-hydroxysteroid dehydrogenase deficiency, biotinidase deficiency, coenzyme Q10 deficiency, cystinosis, diabetic ketoacidosis, dihydrolipoamide dehydrogenase deficiency, fructose-1, 6-diphosphatase deficiency, ethylmalonic encephalopathy, Fanconi-Albertini-Zellweger syndrome, fructose-1-phosphate aldolase deficiency, galactosemia, glutaric aciduria, glutathione synthetase deficiency, glycerol kinase deficiency, glycogenosis, Hawkinsinuria, HMG-CoA lyase deficiency, holocarboxylase synthase deficiency, 3-hydroxyacyl-coenzyme A dehydrogenase deficiency, 3 hydroxyisobutyric aciduria, Hyperkalaemia, hyperosmolar non-ketotic diabetic coma, hypoalbuminism, isovaleric acidaemia, ketoacidosis, lactic acidosis, Leigh syndrome, long chain hydroxyacyl-CoA dehydrogenase deficiency, malonyl-CoA decarboxylase deficiency, maple syrup urine disease, medium chain acyl-CoA dehydrogenase deficiency, 3-methylcrotonyl-CoA carboxylase deficiency, 3-methylglutaconic aciduria, methylmalonic acidemia, mitochondrial acetoacetyl-CoA thiolase deficiency, molybdenum cofactor deficiency, myopathy with deficiency of succinate dehydrogenase and aconitase, organic acidemia, phosphoglucomutase deficiency, propionic acidemia, propionyl-CoA carboxylase deficiency, pyruvate carboxylase deficiency, pyruvate dehydrogenase deficiency, short-chain acyl-coenzyme A dehydrogenase deficiency, succinyl-CoA acetoacetate transferase deficiency, succinyl-CoA synthetase deficiency, vitamin B12-responsive methylmalonic acidemia
Obstetric/Gynecologic	No underlying causes
Oncologic	Myeloma
Opthalmologic	Lowe syndrome, Senior-Loken syndrome
Overdose / Toxicity	Abacavir, acetazolamide, amitriptyline, amlodipine, amoxapine, amphotericin B, aspirin, cholestyramine, clomipramine, clove, cocaine, desipramine, didanosine, doxepin, emtricitabine, felodipine , imipramine, isoniazid, isradipine, malignant hyperpyrexia, malignant hyperthermia, metformin, neuroleptic malignant syndrome, nifedipine, nimodipine, nitroprusside, nortriptyline, paracetamol, phenformin, protriptyline, Reye's syndrome, salicylate poisoning, stavudine, trimipramine
Psychiatric	No underlying causes
Pulmonary	No underlying causes
Renal / Electrolyte	Acute renal failure, analgesic nephropathy syndrome, chronic interstitial nephritis, chronic renal failure, compensation in primary respiratory alkalosis, hypoaldosteronism, Lightwood Albright syndrome, Lowe syndrome, medullary cystic kidney disease, nephronophthisis, osteopetrosis with renal tubular acidosis, renal HCO3- loss, renal tubular acidosis, Senior-Loken syndrome, Ureteral diversion
Rheum / Immune / Allergy	No underlying causes
Sexual	17- beta-hydroxysteroid dehydrogenase deficiency
Trauma	No underlying causes
Urologic	Ureteral diversion
Dental	No underlying causes
Miscellaneous	Cuffed blood sample, near-drowning, starvation

Causes in Alphabetical Order

1,2-Dibromoethane 3 hydroxyisobutyric aciduria 3-hydroxyacyl-coenzyme A dehydrogenase deficiency 3-methylcrotonyl-CoA carboxylase deficiency 3-methylglutaconic aciduria 4-aminopyridine 17- beta-hydroxysteroid dehydrogenase deficiency Abacavir Acetazolamide Acute liver failure Acute renal failure Adrenal cortex insufficiency Aldicarb Amitriptyline Amlodipine Ammonium bifluoride Ammonium chloride Amoxapine Amphotericin B Analgesic nephropathy syndrome Aortic arch interruption Aristolochic acid Aspirin Bacterial overgrowth of small intestine Biliary fistula Biotinidase deficiency Borates Bromophos Carbaryl Chloralose Chlorfenvinphos Chlorpyrifos Cholestyramine Chronic interstitial nephritis Chronic renal failure Cleistanthus collinus Clomipramine Clove Cocaine Coenzyme Q10 deficiency Compensation in primary respiratory alkalosis Congenital chloride diarrhea Coumaphos Cuffed blood sample Cyanides Cystinosis Demeton-S-methyl Desipramine Diabetes Diabetic ketoacidosis Diarrhea Diazinon Dichlorvos Dicrotophos Didanosine Dihydrolipoamide dehydrogenase deficiency Dinitrophenol Dioxathion Disulfoton Doxepin Duodenal atresia Emtricitabine Ethanol Ethion Ethylene glycol Ethylmalonic encephalopathy Fanconi-Albertini-Zellweger syndrome Felodipine Fensulfothion Fenthion Fructose-1, 6-diphosphatase deficiency Fructose-1-phosphate aldolase deficiency Galactosemia GI HCO3- loss Glucocorticoid resistance Glucose transporter type 1 deficiency Glutaric aciduria Glutathione synthetase deficiency Glycerol kinase deficiency Glycogenosis Glycol Ether Glyphosate GRACILE syndrome Hawkinsinuria Hepatic failure Hepatocerebral form of mitochondrial DNA depletion syndrome HMG-CoA lyase deficiency Holocarboxylase synthase deficiency Hyperalimentation Hyperkalaemia Hyperosmolar non-ketotic diabetic coma Hypoalbuminism Hypoaldosteronism Hypoplastic left heart syndrome

Imazapyr Imipramine Intestinal fistulas Intestinal ischaemia Iron compounds Isoniazid Isovaleric acidaemia Isradipine Ketoacidosis Lactic acidosis Lactose intolerance Leigh syndrome Lightwood Albright syndrome Lipoid congenital adrenal hyperplasia Long chain hydroxyacyl-CoA dehydrogenase deficiency Lowe Syndrome Lutz-Richner and Landolt syndrome Malathion Malignant hyperpyrexia Malignant hyperthermia Malonyl-CoA decarboxylase deficiency Maple syrup urine disease Margosa oil Medium chain acyl-CoA dehydrogenase deficiency Medullary cystic kidney disease MELAS MERRF Metaldehyde Metformin Methanol Methidathion Methiocarb Methomyl Methylmalonic acidemia Microcephaly, Amish type Mitochondrial acetoacetyl-CoA thiolase deficiency Mitochondrial aspartyl-tRNA synthetase deficiency Molybdenum cofactor deficiency Monochloroacetate Myeloma Myopathy with deficiency of succinate dehydrogenase and aconitase Near-drowning Necrotizing enterocolitis Nephronophthisis Neuroleptic malignant syndrome Nifedipine Nimodipine Nitroprusside Nortriptyline Organic acidemia Osteopetrosis with renal tubular acidosis Pancreatic fistula Paracetamol Parathion Phenformin Phenol Phosdrin Phosphoglucomutase deficiency Polyethylene glycol Profenofos Propionic acidemia Propionyl-CoA carboxylase deficiency Propoxur Propylene glycol Protriptyline Pseudohypoaldosteronism Pyrimidifen Pyruvate carboxylase deficiency Pyruvate dehydrogenase deficiency Renal HCO3- loss Renal tubular acidosis Reye's syndrome Salicylate poisoning Senior-Loken syndrome Shock Short bowel syndrome Short-chain acyl-coenzyme A dehydrogenase deficiency Starvation Stavudine Strychnine Succinyl-CoA acetoacetate transferase deficiency Succinyl-CoA synthetase deficiency Terbufos Tetraethyl pyrophosphate Toluene Toxic mushrooms Triethylene glycol Trimipramine Tungsten Ureteral diversion Ureterosigmoidostomy VIPoma Vitamin B12-responsive methylmalonic acidemia