serum thyrotropin ( tsh ) concentrations were measured serially in 14 heart-transplant recipients ( group 1 ) and 21 patients undergoing coronary artery bypass surgery ( group 2 ) , all without thyroid disease , and randomly in 158 patients hospitalized for various other nonthyroidal illnesses , including 144 judged euthyroid ( group 3 ) , six with increased ft4 and ( or ) t3 ( group 4 ) , and eight classified hypothyroid by conventional tests .
C0040128
thyroid disease
C0020676
hypothyroid