Urine concentrating ability in cats with hyperthyroidism: Influence of radioiodine treatment, masked azotemia, and iatrogenic hypothyroidism.

ABSTRACT:

Background

Hyperthyroid cats often have urine specific gravity (USG) values <1.035. It remains unclear how USG changes after treatment, if USG can be used to predict azotemia after treatment, or how iatrogenic hypothyroidism influences USG values.

Objectives

To determine the proportion of hyperthyroid cats with USG <1.035 vs ≥1.035; if USG changes after treatment; and whether USG <1.035 correlated with unmasking of azotemia or hypothyroidism.

Animals

Six hundred fifty-five hyperthyroid cats treated with radioiodine; 190 clinically normal cats.

Methods

Prospective, before-and-after study. Hyperthyroid cats had serum thyroxine, thyroid-stimulating hormone, and creatinine concentrations, and USG measured before and 6 months after successful treatment with radioiod

SUBMITTER: Peterson ME 

PROVIDER: S-EPMC10658547 | biostudies-literature | 2023 Nov-Dec

REPOSITORIES: biostudies-literature