Literature DB >> 18216310

The utility of the transtubular potassium gradient in the evaluation of hyperkalemia.

Michael J Choi1, Fuad N Ziyadeh.   

Abstract

The transtubular potassium gradient (TTKG) is used to gauge renal potassium secretion by the cortical collecting duct, indirectly assessing mineralocorticoid bioactivity in patients who have hypo- or hyperkalemia. TTKG values <6 indicate an inappropriate renal response to hyperkalemia, whereas values >2 during hypokalemia point to renal loss. Hypokalemia is not addressed here. Studies supporting the usefulness of the TTKG in hyperkalemia are limited to case series. This calculation may be most useful in distinguishing hyperkalemic patients who have mineralocorticoid deficiency versus resistance by observing a change in TTKG values after physiologic or pharmacologic doses of mineralocorticoids.

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Year:  2008        PMID: 18216310     DOI: 10.1681/ASN.2007091017

Source DB:  PubMed          Journal:  J Am Soc Nephrol        ISSN: 1046-6673            Impact factor:   10.121


  22 in total

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4.  Acute kidney injury in an infant with severe combined immunodeficiency: Answers.

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5.  The Use of Selected Urine Chemistries in the Diagnosis of Kidney Disorders.

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6.  Periodic hypokalemia associated with cyclic Cushing's syndrome.

Authors:  Hiroaki Kikuchi; Takanobu Yoshimoto; Hiroyuki Tanaka; Kazutaka Tsujimoto; Chisato Yamamura; Yohei Arai; Suguru Hirasawa; Shota Aki; Naoto Inaba; Makoto Aoyagi; Yoshihiro Ogawa; Teiichi Tamura
Journal:  CEN Case Rep       Date:  2013-08-09

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8.  Urinary angiotensinogen level is associated with potassium homeostasis and clinical outcome in patients with polycystic kidney disease: a prospective cohort study.

Authors:  Hyoungnae Kim; Seohyun Park; Jong Hyun Jhee; Hae-Ryong Yun; Jung Tak Park; Seung Hyeok Han; Joongyub Lee; Soo Wan Kim; Yeong Hoon Kim; Yun Kyu Oh; Shin-Wook Kang; Kyu Hun Choi; Tae-Hyun Yoo
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Review 9.  Management of hyperkalaemia consequent to mineralocorticoid-receptor antagonist therapy.

Authors:  Sara S Roscioni; Dick de Zeeuw; Stephan J L Bakker; Hiddo J Lambers Heerspink
Journal:  Nat Rev Nephrol       Date:  2012-10-16       Impact factor: 28.314

10.  Differential diagnosis of hyperkalemia: an update to a complex problem.

Authors:  T Eleftheriadis; K Leivaditis; G Antoniadi; V Liakopoulos
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