Conditions: Secondary Hyperparathyroidism Renal Insufficiency, Chronic Parathyroid Hormone Hemodialysis Hypercalcemia
Allocation: NON_RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 100
Healthy volunteers: no

Brief summary:
The purpose of this study is to observe the effectiveness and safety of the use of a low initial dose regime (iPTH/100) in chronic kidney disease patients with secondary hyperparathyroidism (PTH\>300pg/mL) and that require dialysis at least 3 times per week.

Detailed description:
The study will be carried out in three dialysis centers in Peru. Each patient enrolled in the study will be followed during a 6 month period from the time of inclusion. Study visits will occur at Baseline and at Weeks 4, 8, 12 and 24 during the study.

Arms:
arm 1: None

Interventions: intervention 1: Zemplar (paricalcitol)
Intervention descriptions: intervention 1: Zemplar (paricalcitol) dose will be calculated mcg=PARATHYROID HORMONE level/100; this will be provided 3 times per week. Dose will be adjusted by 2-4 mcg every 4 weeks according to the parathyroid hormone level.

Protocol document: