[Surveillance of hypothyroidism treatment].

The efficacy of substitution treatment in primary or secondary hypothyroidism is based on the diappearance of the clinical signs of the disease and the return of blood levels of thyroxine and TSH within normal limits. The dosage should be adapted to the age of the patient the duration of the course of the hypothyroidism and the state of the heart. The cardio-vascular consequences of hypothroidism are so serious that one should know how to detect them straight away, and thus prevent complications with would prevent proper substitutive treatment.