ABSTRACT
There is a well-known controversy among scientific societies regarding the recommendation to screen for thyroid dysfunction (TD) during pregnancy. Although several studies have shown an association between maternal subclinical hypothyroidism and/or hypothyroxinemia with obstetric problems and/or neurocognitive impairment in the offspring, there is only limited evidence on the possible positive effects of thyroxine (T4) treatment in such cases. Despite the scarcity of this evidence, there is a widespread agreement among clinicians on the need for treatment of clinical hypothyroidism during pregnancy and the risks that could arise due to therapeutic abstention. As maternal TD is a quite prevalent condition, easily diagnosed and for which an effective and safe treatment is available, some scientific societies have proposed to assess thyroid function during the first trimester of pregnancy and ideally before week 10 of gestational age. Given the physiologic changes of thyroid function during pregnancy, hormone assessment should be performed using trimester-specific reference values ideally based on locally generated data as geographic variations have been detected. Screening of TD should be based on an initial determination of TSH performed early during the first trimester and only if abnormal should it be followed by either a free or total T4 measurement. Furthermore, adequate iodine supplementation during pregnancy is critical and if feasible it should be initiated before the woman attempts to conceive.
Subject(s)
Evidence-Based Medicine , Hypothyroidism/diagnosis , Practice Guidelines as Topic , Pregnancy Complications/diagnosis , Prenatal Diagnosis , Thyroid Gland/physiopathology , Adult , Female , Health Policy , Hormone Replacement Therapy/adverse effects , Humans , Hypothyroidism/blood , Hypothyroidism/drug therapy , Hypothyroidism/physiopathology , Maternal Serum Screening Tests , Pregnancy , Pregnancy Complications/blood , Pregnancy Complications/drug therapy , Pregnancy Complications/physiopathology , Pregnancy Trimester, First , Thyrotropin/blood , Thyroxine/adverse effects , Thyroxine/blood , Thyroxine/therapeutic useABSTRACT
BACKGROUND AND AIMS: Successful aging is a worldwide aim, but its related factors and instruments of measurement are currently hotly debated. To investigate the relationship between muscle strength and functional capacity, and its association with successful aging. METHODS: A population-based cross-sectional study was performed in Mataró (Spain). Included in the study were 313 subjects (153 men, 160 women) aged 70 years and over. Physical and cognitive functions were assessed, as well as muscle strength, nutritional status, lifestyle factors, and associated morbidities. RESULTS: A state of successful aging (SA), defined as optimal functional and cognitive capacities with absence of cancer, stroke, cardiovascular or pulmonary chronic diseases, was found in 20% of women and 32% of men. SA was associated with higher muscle strength in comparison with the non-SA condition. Muscle strength measurements were higher in men, and decreased with age, poor balance, decreased functional capacity, and impaired cognitive status. It was also associated with higher academic level, regular exercise, and nutritional status in both genders. Multivariate analysis showed that independent variables related to SA were: hand grip, arthrosis, deafness and unipodal balance test, but not age or gender. CONCLUSIONS: Muscle strength is positively associated with the successful aging condition, and may be one of its functional links, reflecting the integrated health status of old men and women. The systematic inclusion of the measurement of muscle strength may be helpful in clinical evaluation of the elderly.