Frequency of Hypocalcaemia in Cancer Patients Receiving Zoledronic Acid for Bone Metastasis
DOI:
https://doi.org/10.70749/ijbr.v3i2.593Keywords:
Hypocalcemia, Zoledronic Acid, Bone Metastases, Cancer Therapy, Skeletal-related EventsAbstract
Background: The use of zoledronic acid for bone metastases in cancer patients is frequently accompanied by hypocalcemia, potentially compromising outcomes and quality of life. Despite its clinical significance, there is limited comprehensive data on the incidence and associated risk factors in this population. Objectives: To determine the frequency of hypocalcemia in cancer patients receiving zoledronic acid therapy for bone metastases and to assess its association with demographic and clinical variables. Study Settings: The research was undertaken at Shaukat Khanum Memorial Cancer Hospital & Research Center in Lahore, specifically in the Department of Medicine. Duration of Study: July 2024 to December 2024. Data Collection: A prospective observational cross-sectional study included 180 cancer patients aged 18–60 years with bone metastases receiving zoledronic acid therapy for at least three months. Corrected serum calcium levels were measured to define hypocalcemia (<8.5 mg/dl). Data were stratified by age, gender, BMI, and cancer type, and analyzed using SPSS version 21. Results: The prevalence of hypocalcemia was 6.7%. Hypocalcemia rates were comparable across age groups (6.6% in 18–50 years vs. 7.0% in >50 years; p = 0.926), genders (4.3% in males vs. 9.1% in females; p = 0.202), BMI categories (7.0% in BMI 18–25 vs. 6.4% in BMI >25; p = 0.873), and cancer types (breast cancer: 5.7%; lung cancer: 6.7%; prostate cancer: 6.4%; renal cell carcinoma: 9.1%; p = 0.936). Conclusion: Hypocalcemia is a rare but significant complication of zoledronic acid therapy. Routine calcium monitoring is essential for early detection and management. Future research should identify risk factors and improve supplementation.
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