A holter examination is done for complaints such as palpitations or dizziness. A holter examination uses a device to record your heart rhythm for an extended period of time. This gives the cardiologist a good picture of your heart rhythm. This Divi explains to the patient how a Holter examination works. The patient sees how the recorder is connected to the body and therefore has a good understanding of what the Holter examination looks like. Finally, the Divi explains the preparation process.