Microlife WatchBP Home N
Product code: ML-WATCHBPHOME(N)
WatchBP Home N: valuable measurements during the night
Despite all arguments in favour of self-measurement of blood pressure it is not (yet) considered to be as reliable as 24-h ambulatory blood pressure measurement (ABPM) [1]. There are some reasons for this but the most important is that with ABPM the nocturnal blood pressure can be determined.
Nocturnal blood pressure:
Many studies have shown that nocturnal (during the night) blood pressure measurement is the most reliable measure for predicting cardiovascular events. This means that if self-measurement of blood pressure could replace ABPM as a gold standard it needs the possibility of performing nocturnal blood pressure measurements.
For this reason Microlife has extended the validated Home Watch BP Home with the possibility to automatically perform three subsequent nocturnal measurements: WatchBP Home N (octurnal).
Product Features
Benefits of the WatchBP Home N above 24-hour blood pressure measurement
Although the WatchBP Home might not be able to replace the ABPM it has some important benefits above ABPM:
Better sleep quality
With ABPM patients often feel uncomfortable when wearing the device, complain about sleep disturbance [2] and frequent subsequent measurements cause pain in the upper arm. All factors that may influence reliability of the performed measurements. With the WatchBP Home N only three measurements at night will be performed, which leads to less disturbance.
Cheaper
ABPM is very expensive and labour intensive. An ABPM device costs about 10 times the price of a self-measurement device and a research nurse is required to hook on and off the device, to instruct the patients and to transmit the obtained data to the computer after measurement.
More reproducible
Although, ABPM is determined to be the gold standard in blood pressure measurement its reproducibility is poor [3], mainly due to the fact that measurements are only performed at one day. The WatchBP Home N allows patients to perform measurements on multiple days and night which will improve the reproducibility of all measurements.
Supplied with a Medium (22 - 32cm) size cuff.
Other cuffs in Small (17 - 22cm) and Large (32 - 42cm) size are available to purchase separately.
Detects Atrial Fibrillation (AF)
Validated for use in pregnancy pre eclampsia
Technical Specification
Operating temp.:
- 10 to 40 °C (50 to 104 °F)
Storage temp.:
- -20 to 55 °C (-4 to 131 °F)
- 15 - 90 % relative maximum humidity
Weight:
- 385 g (including batteries)
Dimensions:
- 150 x 100 x 50 mm
Measuring procedure:
- Oscillometric, corresponding to Korotkoff
Method:
- Phase I systolic, Phase V diastolic
Measurement range:
- 30 - 280 mmHg – blood pressure
- 30 - 200 beats per minute – pulse
Cuff pressure display:
- Range: 0 - 299 mmHg
- Resolution: 1 mmHg
- Static accuracy: pressure within ± 3 mmHg
or 2% of reading > 200 mmHg - Pulse accuracy: ± 5 % of the readout value
Voltage source:
- 4 x 1.5 V Batteries; size AA
- Mains adapter DC 6V, 600 mA (optional)
References
- Pickering TG, Shimbo DHaas D. Ambulatory blood-pressure monitoring.N Engl J Med 2006; 354: 2368-2374.
- Leary ACMurphy MB. Sleep disturbance during ambulatory blood pressure monitoring of hypertensive patients.Blood Press Monit 1998; 3: 11-15.
- Stergiou GS, Efstathiou SP, Argyraki CK, Gantzarou AP, Roussias LGMountokalakis TD. Clinic, home and ambulatory pulse pressure: comparison and reproducibility.J Hypertens 2002; 20: 1987-1993.
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