Cardiology outpatient clinics and hospital ECG services use the Blackstone HSB02, where reports are read in a six-channel layout. The technician places four limb and six chest electrodes, looks over all twelve leads on the touch screen, and records once. The 6CH×2 layout then prints the limb and chest leads as two blocks of six on the 110 mm roll, with the interpretation statement for the reporting clinician.
Medical admissions units, pre-operative assessment clinics, and inpatient wards use it for routine ECGs that come with admission, surgery, and medication changes. With electrodes and the patient cable supplied, a new unit records from day one, and spare rolls and electrodes are the only regular supplies. In pre-operative assessment, the ECG is taken in the same appointment as the other tests, and the printout with its interpretation goes forward to the anaesthetic review.
Away from a socket, the lithium battery keeps it working at the bedside, in side rooms and on wards without a free outlet, and charging between sessions keeps it ready for the next round. Internal memory stores the day's recordings, and extra storage comes from a USB flash drive or microSD card.
Clean traces come from good contact and the filters behind it. For a cold or anxious patient, the EMG filter removes tremor, while the AC filter removes mains hum and the automatic anti-drift function levels a wandering baseline. Because the floating input is defibrillator-protected, the electrodes can stay on if the patient's condition changes during the recording.
A4 full-page reporting, exercise testing and alarmed monitoring belong to other equipment.