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1.
Arq Bras Endocrinol Metabol ; 50(3): 523-31, 2006 Jun.
Article in Portuguese | MEDLINE | ID: mdl-16936994

ABSTRACT

Some symptoms and signs of hypothyroidism, as well as some laboratory abnormalities, may be present in subclinical hypothyroidism (SH). This study evaluates the prevalence of signs and symptoms of hypothyroidism and skeletal muscle dysfunction in 57 patients with SH compared to 37 euthyroid controls. The participants received a clinical score based on signs and symptoms of hypothyroidism. The muscle strength was estimated by manual testing and chair dynamometer and inspiratory force by manuvacuometer. Thyroid hormones and muscle enzymes were measured. The SH group presented with higher score (p< 0.01), complained about myalgia and weakness more frequently (p< 0.05), and showed strength disability in scapular and pelvic girdles (p< 0.05). The median free T4 serum levels were lower in SH (p< 0.001). These findings suggest that signs and symptoms of thyroid dysfunction may be related to lower levels of FT4 in SH and should be taken into account in the decision of beginning LT4 therapy.


Subject(s)
Hypothyroidism/complications , Muscle Strength/physiology , Adolescent , Adult , Aged , Case-Control Studies , Creatine Kinase/metabolism , Female , Humans , Hypothyroidism/diagnosis , Hypothyroidism/physiopathology , Male , Middle Aged , Muscles/enzymology , Neuromuscular Diseases/diagnosis , Statistics, Nonparametric , Thyroid Function Tests , Thyroxine/blood
2.
Arq. bras. endocrinol. metab ; 50(3): 523-531, jun. 2006. tab
Article in Portuguese | LILACS | ID: lil-433747

ABSTRACT

Alguns sintomas e sinais de hipotireoidismo, bem como alterações laboratoriais, podem estar presentes no hipotireoidismo subclínico (HS). Este trabalho avalia a prevalência de sintomas e sinais de hipotireoidismo e alterações músculo-esqueléticas em pacientes com HS (n= 57) comparado a um grupo controle sem disfunção tireoideana (n= 37). Baseado na presença de sintomas e sinais de hipotireoidismo, os participantes receberam pontuação específica (escore clínico). A força muscular foi aferida pelo teste muscular manual e por dinamômetro de cadeira e a força inspiratória por manovacuômetro. Os níveis de hormônios tireoideanos e enzimas musculares foram dosados. O grupo HS apresentou escore mais elevado (p< 0,01), maior freqüência das queixas de mialgia e fraqueza (p< 0,05) e redução de força das cinturas escapular e pélvica (p< 0,05). Os níveis médios de T4 livre foram menores no HS (p< 0,001). Os resultados sugerem que a presença de sintomas e sinais de disfunção tireoideana e níveis de T4 livre na faixa inferior da normalidade no HS possam estar relacionados e devem ser valorizados na decisão de iniciar LT4.


Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Hypothyroidism/complications , Muscle Strength/physiology , Case-Control Studies , Creatine Kinase/metabolism , Hypothyroidism/diagnosis , Hypothyroidism/physiopathology , Muscles/enzymology , Neuromuscular Diseases/diagnosis , Statistics, Nonparametric , Thyroid Function Tests , Thyroxine/blood
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