case of Gitelman's syndrome presenting with hypocalcemia

Gitelman's syndrome [GS] is an autosomal recessive disorder caused by a defect of the thiazide-sensitive NaCl cotransporter [TSC] at the distal tubule, characterized by hypomagnesemia, hypokalemic alkalosis and hypocalciuria. This condition was previously confused with Bartter's syndrome [BS]. The documentation of hypocalciuria helps to differentiate this syndrome from BS. We report a 35-year-old female patient presented to our hospital with a history of muscle weakness and carpal spasm. She showed hypokalemia, hypocalcemia, hypomagnesemia and hypocalciuria. She was treated with electrolyte supplements

Thyrotoxicosis with heart block

We report the case of a young lady who presented with throtoxicosis secondary to viral thyroditis [De Quervain's thyroiditis]. She was also found to have sinus tachycardia with first degree heart block, which could not be accounted for by any other cause. We discuss whether beta blockers can be used in this situation