Renal tubular acidosis differential diagnosis

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Β ; Associate Editor(s)-in-Chief: Aditya Ganti M.B.B.S. [2]
Overview
Overview
Renal tubular acidosis must be differentiated form other diseases as most of them have a similar presentation of acidosis on ABG, dehydration (nausea and vomiting) and specific history pertaining to underlying etiology.
Differentiating Renal tubular acidosis from other diseases
Differentiating Renal tubular acidosis from other diseases
Renal tubular acidosis must be differentiated form other diseases as most of them have a similar presentation of acidosis on ABG, dehydration (nausea and vomiting) and specific history pertaining to underlying etiology.
| Category | Disease | Mechanism | Clinical | Paraclinical | Gold standard diagnosis | Other findings | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Symptoms | Signs | Lab data | |||||||||||||||||||||||||||||||
| ABG | CBC | Chemistry | Renal | U/A | |||||||||||||||||||||||||||||
| β acid
production |
Loss of
bicarbonate |
β renal acid
excretion |
Fever | N/V | Diarrhea | Dyspnea | Toxic/ill | BP | Dehydration | Level of consciousness | HCO3β | paCO2 | O2 | WBC | Hb | BS | Clβ | K+ | Na+ | Ketones | Lactic acid | Serum AG[1] | Osmolar gap[2] | Bun | Cr | Urine pH | Urine AG | Urine ketone | |||||
| Ketoacidosis | Diabetic ketoacidosis[3] | + | β | β | + | + | + | + | + | β | + | β | β | β | Nl to β | β | Nl to β | ββ | Nl | β | β | β | β | β | β | Nl to β | Nl | β | + | + | Clinical + hyperglycemia + ketosis |
| |
| Starvation[4] | + | β | β | β | + | β | β | + | β | + | β | β | β | Nl | Nl | Nl | Nl to β | Nl | β | β | β | Nl | β | Nl | Nl | Nl | Nl | + | β | Clinical manifestation |
| ||
| Alcoholic ketoacidosis (Ethanol)[5] | + | β | β | β | + | Β± | β | + | β β | + | Agitated | β | β | β | Nl to β | Nl to β | β Nl β | Nl | β | β | ββ | β | β | ββ | β | Nl | β | + | + | Clinical manifestation + ketosis |
| ||
| Systemic | Sepsis[6] | + | β | β | + | + | β | + | + | β β | + | β | β | β | Nl to β | β | Nl | Nl | Nl | β | β | Nl | Nl to β | Nl | Nl | β | β | Nl | β | β | Clinical manifestation and lab finding |
| |
| Ischemia[7] | + | β | β | β | + | β | + | + | β | + | β | β | β β | Nl to β | Nl to β | Nl | Nl | Nl | β | β | Nl | Nl to β | Nl | Nl | Nl to β | Nl to β | Nl | β | β | Clinical manifestation and lab finding |
| ||
| Lactic acidosis[8] | + | β | β | Β± | + | β | β | + | β β | Β± | Agitated | β | β | β | Nl to β | β | Nl | Nl | Nl | Nl | Nl | β | β | β | Nl or β | Nl | β | β | β | Clinical manifestation and lab finding |
| ||
| Renal | Uremia[9] | β | β | + | + | + | β | β | + | β β | Β± | β | β | β | Nl to β | β | β | Nl | Nl | β | β | Nl | Nl | β | β | β | β | β | + | β | Clinical manifestation and lab finding |
| |
| Renal failure[10] | β | β | + | β | + | β | β | + | β | + | β | β | β | Nl to β | β | β | Nl | β | β | β | Nl | Nl | β | β | β | β | β | β | β | Renal function test |
| ||
| Renal tubular acidosis[11] | Type I[12] | β | β | + | Β± | Β± | β | β | β | β β | β | β | β | β | Nl | Nl | Nl | Nl | β | β | β | Nl | Nl | Nl | Nl | β | β | β | + | β | Clinical manifestation and lab finding |
| |
| Type II | β | + | β | Β± | Β± | β | β | β | β β | β | β | β | β | Nl | Nl | Nl | Nl | β | β | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl | β | β | Clinical manifestation and lab finding |
| ||
| Type IV | β | β | + | Β± | Β± | Β± | β | β | β | β | β | β | β | Nl | Nl | Nl | Nl | β | β | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl | + | β | Clinical manifestation and lab finding | |||
| Heart | Heart failure[13] | + | + | β | β | Β± | β | + | + | β β | + | β | β | β β | β | Nl | Nl | Nl | Nl | β | β | Nl | Nl | Nl | Nl | Nl to β | Nl to β | Nl | β | β | Clinical manifestation+ echocardiogram |
| |
| Myocardial infarction[14] | + | β | β | β | + | β | + | + | β β | β | β | β | β β | Nl to β | Nl to β | Nl | Nl | Nl | β | β | Nl | β | Nl | Nl | Nl to β | Nl to β | Nl | β | β | Clinical manifestation + ECG |
| ||
| GI | Diarrhea[15] | β | + | β | Β± | + | + | β | + | β | + | May be lethargic | β | β | Nl | Nl | β | β | β | β | Nl | Nl | Nl | Nl | Nl | β | Nl | Nl | β | β | Stool exam |
| |
| Hyperalimentation[16] | + | + | β | β | β | + | β | β | Nl | β | β | β | β | Nl | Nl | β | Nl | β | β | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl | β | β | Clinical manifestation |
| ||
| Liver failure[17] | β | + | β | β | + | + | β | + | β | + | Confused | β | β | Nl | Nl | β | β β | β | β | β | Nl | Nl | Nl | Nl | Nl | Nl | Nl | β | β | Liver biopsy |
| ||
| Endocrine | Hyperparathyroidism[18] | β | + | + | β | + | β | β | β | Nl | + | Confused | β | β | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl | Nl to β | Nl | Nl | β | β | PTH level |
| |
| Addison’s disease[19] | β | + | β | β | + | + | β | β | β | + | Irritable | β | β | Nl | Nl | Nl | β | Nl | β | β | Nl | Nl | Nl | Nl | Nl | Nl | Nl | β | β | Hormone level | |||
References
References
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