Clinical Trial: Study of the Relationship Between Calcium Levels and Intact Parathyroid Hormone (iPTH) in Adults With Repaired or Palliated Conotruncal Cardiac Defects

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

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Official Title:

Brief Summary:

OBJECTIVES: I. Identify latent hypoparathyroidism in normocalcemic adult survivors with repaired conotruncal cardiac defects, by evaluating parathyroid gland secretory function after induced hypocalcemia.

II. Determine the relationship of parathyroid hormone secretion to microdeletions in the same region of chromosome 22q11 as found in patients with DiGeorge anomaly.