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1.
Am J Med Sci ; 335(2): 111-4, 2008 Feb.
Article in English | MEDLINE | ID: mdl-18277118

ABSTRACT

OBJECTIVE: We report the acute effects of cinacalcet on calcium and parathyroid hormone (PTH) levels and the effects of 1 year of therapy on calcium and phosphorus metabolism in 4 patients with persistent primary hyperparathyroidism (PHPT) after unsuccessful parathyroidectomy. PATIENTS: Four patients (3 women; age, 24 to 71 years) were studied after 1 to 3 parathyroid operative procedures. All of them had elevated serum total and ionized calcium levels, decreased serum phosphorus, and increased concentrations of intact PTH. METHODS: Calcium and PTH responses to an acute dose of oral cinacalcet (30 mg) were studied at baseline. Effects of cinacalcet (30 mg b.i.d.) on serum calcium, phosphorus, and PTH, and urinary calcium and phosphorus were studied at 1, 3, 6, and 12 months of therapy. RESULTS: PTH concentrations were reduced by 13.0% to 86.7% after acute cinacalcet administration. Chronic therapy with cinacalcet was followed by a decrement in serum total calcium (10.2% at 12 months) and ionized calcium (10.1%) and an increase in serum phosphorus (20.8%), with only a modest decrement in PTH levels (5.1%). All patients had normal serum total and ionized calcium levels at 3 to 12 months of therapy. Urinary calcium decreased by 20.0% at 12 months. CONCLUSIONS: Cinacalcet was effective in normalizing calcium and phosphorus concentrations in patients with persistent PHPT after unsuccessful parathyroidectomy.


Subject(s)
Hyperparathyroidism, Primary/drug therapy , Naphthalenes/administration & dosage , Adult , Aged , Calcium/blood , Cinacalcet , Female , Humans , Hyperparathyroidism, Primary/etiology , Middle Aged , Parathyroid Hormone/blood , Parathyroidectomy/adverse effects , Phosphorus/blood , Phosphorus/urine , Treatment Outcome
2.
Anál. clín ; 27(3): 101-134, jul. 2002. tab, graf
Article in Es | IBECS | ID: ibc-16947

ABSTRACT

Utilizando los datos del Programa de Supervisión Externa de la Calidad del año 2000, se ha confeccionado un método para la elaboración de unas gráficas que permitirían relacionar los laboratorios participantes (en porcentaje) con la tasa de error que cometen al procesar las muestras de control (de seis a doce como máximo) del Programa de Supervisión Externa de la Calidad (PSEC) de AEFA y AEBM. Es decir, conocer el estado del arte o el nivel de prestaciones con respecto a la inexactitud para cada magnitud biológica. A partir de esas gráficas es relativamente fácil decidirse por unas especificaciones de calidad plausibles, basadas en el estado del arte. Con esas gráficas podemos, además, contestar a preguntas semejantes a las siguientes: 1. ¿qué porcentaje de laboratorios participantes en el PSEC cometen como máximo un 15 per cent de error en el 100 per cent de las muestras de control que procesan? 2.¿Qué error cometen el 50 per cent de los laboratorios participantes en el PSEC en el 75 per cent de las muestras de control que procesan? (AU)


Subject(s)
Humans , Health Programs and Plans , Quality of Health Care/statistics & numerical data , Laboratories/statistics & numerical data , Laboratories/standards , Statistics as Topic , 25105
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