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Urinary Iodine as an Iodine Deficiency Test in Lung Transplant Recipients in Order to Prevent Iodine Deficiency Disorders

Anita Stanjek-Cichoracka, Sławomir Żegleń, Elżbieta Woźniak-Grygiel, Anna Łaszewska, Piotr Sindera, Jacek Wojarski, Marek Ochman, Wojtek Karolak, Marian Zembala

(Department of Radioisotope Diagnostic and Radiopharmaceuticals, Medical University of Silesia in Katowice, Sosnowiec, Poland)

Ann Transplant 2014; 19:499-502

DOI: 10.12659/AOT.890826


Background: In Poland, lung transplantation (LTx) as a routine method began in 2004, and since then, the Silesian Center for Heart Disease in Zabrze 85 LTx has performed (54 single-lung transplantations, 30 double-lung transplantations, and 1 heart-lung) transplantation.
The recommendation to take vitamin supplements (without specific indication of the iodine content) does not apply to another iodine prophylaxis in patients after lung transplantation, excluding patients with known thyroid disease. The aim of this study was to assess thyroid gland function based on hormones and urinary iodine (UI) concentration in patients after LTx.
Material and Methods: UI analysis was performed in 19 lung recipients (12 men and 7 women; mean age: 46.2±12.47 years, BMI: 21±2.25) and compared to TSH, free T3, and free T4.
Results: Sufficient UI was observed only in 2 (9%) samples. In 12 samples (54.5%), mild iodine deficiency was recorded, in 4 samples (18.2%) moderate iodine deficiency was noted, and in 3 (13.6%) severe iodine deficiency was found. No correlation between BMI and UI, as well as hormones concentration, was observed. No correlation was revealed when analyzed samples were divided by patient sex.
Conclusions: Although thyroid gland hormones were in the normal range, we found moderate, mild, and severe iodine deficiency in the majority of analyzed samples. Measurements of urinary iodine in lung transplant recipients should accompany thyroid hormone measurements as an iodine deficiency test and in order to prevent iodine deficiency disorders.

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