Screening of an Elderly Population in Primary Care for Primary Hyperparathyroidism

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Abstract
In order to assess the diagnostic outcome of a screening for primary hyperparathyroidism (PHPT) in an elderly population, we determined ionized calcium in serum from 368 individuals participating in a health control at Mölnlycke Primary Care Centre (200 women, 168 men; age range 75-95 years); four-fifths of the individuals living in their homes, the remainder in homes for aged or nursing homes. Intact parathyroid hormone was determined in the samples with oinized calcium concentration greater than mean + 3SD of the truncated population sample, and these individuals were also recalled for another blood sample. Moderate hypercalcaemia, probably due to PHPT, was found in eight individuals (2% of the complete sample, 3% of the women), five having neuropsychiatric or neuromuscular symptoms consistent with PHPT. Surgical intervention is probably indicated in only a small proportion of elderly patients. We conclude that optimal benefits in relation to costs of screening for PHPT in old people will depend on the availability of a safe and simple pharmacological treatment that could determine any causal relationship between hypercalcaemia and symptoms.