Clinical and Biochemical Profiles of Hospitalized Patients with Hypercalcaemia from a Tertiary Care Centre in North India

<b>Background and aims:</b> The profile of hypercalcaemia in hospitalized patients in India seems to be changing. However, studies evaluating the profile of hypercalcaemia in hospitalized settings in India are extremely limited. This prospective study aims to evaluate the clinical and biochemical profile of hospitalized patients with hypercalcaemia from a tertiary care centre in north India. <b>Materials and methods:</b> Clinical and biochemical profiles of subjects with hypercalcaemia detected during hospitalization/hospitalized with hypercalcaemia were assessed. A total of 91 subjects with sustained hypercalcaemia, who were eligible, underwent further investigation as per the institutional protocol and the data collected were analyzed. <b>Results:</b> The mean age of participants was 57.88 ± 14.23 years, with 62.64% of participants being females. The most common symptoms were nausea and anorexia, which were observed in all patients. The most common clinical sign was dehydration, which was observed in 32.97% of subjects. Primary hyperparathyroidism was the most common cause (41.76%), followed by suspected or confirmed malignancy/solid tumours in 15.38% of subjects. Other causes were advanced chronic liver disease (10.99%), multiple myeloma (9.89%), vitamin D toxicity (8.79%), granulomatous disorders (2.20%) and drug-i nduced disorders (1.10%). Forty-one subjects (45.05%) developed acute kidney injury and 14 subjects (15.38%) developed acute pancreatitis as a complication. Six subjects (6.59%) died during the course of hospitalization because of either primary disease or other secondary complications. <b>Conclusions:</b> Clinicians should be aware of changing patterns of hypercalcaemia in a hospital setting. Hypercalcaemia in hospitalized patients is associated with significant complications and mortality. Further large-scale prospective studies are needed to understand the changing pattern of hypercalcaemia in hospitalized patients from India.