Effect of Phlebotomy on Heartrate in Polycythemia Patients

Recruiting now

Conditions studied: Polycythemia

In brief

Single-centre, observational within-subject design: patients that undergo phlebotomies regularly for polycythemia will be measured continuously by wearables one week before until one week after a phlebotomy, for three phlebotomies.

Key facts

Study ID

NCT05396170

Run by

Leiden University Medical Center

People needed

10

Starts

2022-07-21

Expected to finish

2025-01-01

Last updated by the study team

2024-11-13

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients with polycythaemia, requiring phlebotomy on a regular basis (at least every 4 months)
• Subjects aged ≥18 years
• In possession of a smartphone
• Life expectancy ≥ 3 months

You may not qualify if…

• Poor performance/functional status (Eastern Cooperative Oncology Group system ECOG ≥3)
• Participants with known arrhythmias or other significant cardiological conductivity disorders (Paroxysmal atrial fibrillation is allowed)
• Hospitalized subjects
• Subjects with a pacemaker.
• Subjects with a secondary polyglobulia due to eg smoking or other pulmonary issues.
• Scheduled oncological treatments or surgery during the study period.

Where it is running

• LUMC — Leiden, South Holland, Netherlands (enrolling)

Full record on ClinicalTrials.gov

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