Microlife WatchBP Office Central Instruction Manual

WatchBP Ofce Central

EN

1

Cardiovascular Screening Solution for:

-Central blood pressure measurement

-Ankle Brachial Index assessment

-Atrial brillation detection

-Simultaneous assessment of the Inter-Arm Blood

Pressure Difference

Instruction Manual

WatchBP Ofce Central

Preface

The WatchBP Ofce Central has been validated against simultaneous recorded intra-arterial blood pressure measurement, which is the gold standard for

validation of central blood pressure measurement, and showed extreme high accuracy1. The WatchBP central has passed the validation protocol of the BHS

for accuracy in blood pressure measurement (A/A) and is equipped with innovative screening tools such as:

• An implemented atrial brillation (Ab) detection system that has proven excellent accuracy

2, 3

and is ofcially recommendation by the National Institute of

Clinical health and Excellence (NICE) in the UK 4.

• Two arm cuffs that allow simultaneous blood pressure measurement of both arms for accurate determination of inter-arm blood pressure differences

5, 6

.

This mode is highly supported by the latest ESH guidelines (2013) stating that Inter-arm difference in blood pressure is only meaningful when obtained from

simultaneous arm blood pressure measurement 7.

• Ankle-brachial index (ABI) performance that is validated against Doppler for accuracy with positive results and additionally showed that the assessment led

to a signicant time reduction as compared to Doppler

8

. Finally, the automated calculation of the ABI value guarantees uniformity and prevents errors due to

registration and calculation failures 9.

1. Cheng, H.M., et al., Measurement Accuracy of a Stand-Alone Oscillometric Central Blood Pressure Monitor: A Validation Report for Microlife WatchBP Ofce Central. Am J Hypertens. 2013. 26: 42-50.

2. Stergiou, G.S., et al., Diagnostic accuracy of a home blood pressure monitor to detect atrial brillation. J Hum Hypertens, 2009. 23: 654-8.

3. Wiesel, J., et al., Detection of atrial brillation using a modied microlife blood pressure monitor. Am J Hypertens, 2009. 22: 848-52.

4. NICE, WatchBP Home A for opportunistically detecting atrial brillation during diagnosis and monitoring of hypertension. http://guidance.nice.org.uk/MTG13, 2013.

5. Lohmann, F.W., et al., Interarm differences in blood pressure should be determined by measuring both arms simultaneously with an automatic oscillometric device. Blood Press Monit, 2011. 16: 37-42.

6. Stergiou, G.S., et al., Automated device that complies with current guidelines for ofce blood pressure measurement: design and pilot application study of the Microlife WatchBP Ofce device. Blood Press
Monit, 2008. 13: 231-5.

7. Mancia, G., et al., 2013 ESH/ESC Guidelines for the management of arterial hypertension: The Task Force for the management of arterial hypertension of the European Society of Hypertension (ESH) and of
the European Society of Cardiology (ESC). J of Hypertens. 2013, 31:1281–1357.

8. Kollias, A., et al., Automated determination of the ankle-brachial index using an oscillometric blood pressure monitor: validation vs. Doppler measurement and cardiovascular risk factor prole. Hypertens Res,

2011. 34: 825-30.

9. Verberk, W.J., et al., Automated oscillometric determination of the ankle-brachial index: a systematic review and meta-analysis. Hypertens Res, 2012. 35: 883-91.

EN

WatchBP Ofce Central

Product description

Name of parts and display ............................................ 3-4

Components and accessories ......................................... 5

Before using WatchBP Ofce Central

Selecting and tting the correct cuff ................................. 6

Selective Cuffs for upper arm and ankle........................... 7

Application of the ankle cuff ............................................. 8

Three operation modes

«ABI» mode ................................................................... 9

«CENTRAL» mode ...................................................... 10

«SCREEN» mode ...................................................11–12

Taking measurements using WatchBP Ofce Central

«SCREEN» mode .................................................. 13–14

Taking less than three measurements ........................... 14

«CENTRAL» mode ................................................ 15–16

Skipping the countdown time ......................................... 17

Setting measurement intervals ...................................... 17

«ABI» mode .......................................................... 18–19

Special Functions

Central blood pressure ................................................. 20

Central pulse pressure .................................................. 20

Mean arterial pressure and pulse pressure ................... 21

Appearance of the atrial brillation indicator .................. 22

About atrial brillation ................................................... 23

Inter-arm difference (IAD).............................................. 23

ABI (Ankle Brachial Index) ............................................ 24

Hiding measurement values .......................................... 25

Viewing and transferring measurement data

In «SCREEN» mode .................................................... 26

In «CENTRAL» mode ................................................. 27

In «ABI» mode ............................................................. 28

Appendix

Rechargeable battery and power adaptor ..................... 30

Troubleshooting ............................................................ 31

Error messages....................................................... 32–34

Safety, care, accuracy test and disposal .................. 35–36

Technical specications ................................................ 37

Table of Contents

3

AUSCULT.

ROUTINE

SCREEN

ABI CENTRAL SCREEN

MAP

IAD

I/O switch

Main Adaptor Socket

Battery Compartment

Cuff Socket (L)

Cuff Socket (R)

Recharge Indicator

Display

M Button (Memory)

Mode Switch

Start/Stop Button

Product description

Name of parts

Serial Port

4

WatchBP Ofce Central

EN

Mean Arterial Pressure (MAP)

Pulse Pressure (PP)

Mode Indication

External Power

Atrial Fibrillation Detection

Central Systolic/ Pulse Pressure

L/R Cuff

Supine Position Reminder

Hide Display

Memory Mode

ABI indicator and Pulse Rate

Battery Symbol

Value for Left Arm

Systolic Value

Diastolic Value

Inter-arm Difference

Value for Right Arm

Systolic Value

Diastolic Value

Display

5

Components and accessories

WatchBP Ofce Central

Blood Pressure Device

AC Adaptor X1

(Input: 100-240V~50/60Hz 0.48A
Output: +7.5V 2A)

Cuff for upper arm

M-L size (22cm~42cm) X 2

Instruction Manual
Quick Start Guide

AUSCULT.

ROUTINE

SCREEN

ABI CENTRAL SCREEN

MAP

IAD

Cuff for ankle

M size (22cm~32cm) X 1

I

N

D

E

X

L

I

N

E

8

L

E

F

Serial Port Connecting Cable

EN

6

WatchBP Ofce Central

M-L (Medium - Large size), arm cuff

22 - 42 cm (8.7 - 16.5 inches)

With air tube 130 cm

M (Medium size), ankle cuff

22-32 cm (12.6 - 16.5 inches)

With air tube 130 cm

Before using WatchBP Ofce Central

Selecting the correct cuff

Two upper arm cuffs and an ankle cuff are provided within the
standard package of the WatchBP Ofce Central.

Fitting the cuff properly

1) Place the cuff over the left (or right) upper arm so that
the air tube and artery mark arrow point towards the
lower arm.

2) Wrap the cuff around the arm. Make sure that the
lower edge of the cuff lies approximately 2cm ( ¾ inch)
above the elbow.

Remove all clothing covering or constricting the

measurement arm before applying the cuff.

Connect the cuff to the device by inserting the cuff connector

into the cuff connector socket.

I

N

D

E

X

L

I

N

E

8

L

E

F

F

7

Selective Cuffs for upper arm and ankle

M - L (Medium - Large size, standard

delivered)

22 - 42 cm (8.7 - 16.5 inches)

With air tube 130 cm

Please contact Microlife or its distributor to purchase L-XL size or other size cuffs.

M (Medium size, standard delivered)

22 - 32 cm (8.7 - 12.6 inches)

With air tube 200 cm

For upper arm

For ankle

L (Large size, to be ordered)

32 - 42 cm (12.6 - 16.5 inches)

With air tube 200 cm

Rigid cuff

F

EN

8

WatchBP Ofce Central

Application of the ankle cuff
(in ABI mode)

1) The patient has to lie down in supine position.

2) Place the ankle cuff on the leg. Make sure the edge of
the ankle cuff lies approximately 2 to 3cm ( ¾ to 1 inch)
above the ankle and notice that the artery mark is on the
posterior tibial artery.

posterior tibial artery.

2-3 cm

(3/4 to 1 inch)

3) Wrap and tighten the cuff around the leg.

4) Leave a little free space between the leg of the patient
and the cuff. Two ngers should t between the leg and

the cuff.

9

AUSCULT.

ROUTINE

SCREEN

ABI CENTRAL SCREEN

MAP

IAD

«ABI» mode

Select «ABI» mode for Ankle-Brachial measurement.

Select the arm with the higher blood pressure value as
determined with the «SCREEN» mode.

Select an operation mode

The WatchBP Ofce Central device includes three operation
modes: «ABI», «CENTRAL», and «SCREEN» . Use the
Mode Switch to select the desired mode.

ABI CENTRAL SCREEN

ABI CENTRAL SCREEN

ABI CENTRAL SCREEN

ABI CENTRAL SCREEN ABI CENTRAL SCREEN

EN

10

WatchBP Ofce Central

ABI CENTRAL SCREEN

ABI CENTRAL SCREEN

«CENTRAL» mode

Select «CENTRAL» mode to perform central blood pressure
measurements on the preferred arm for prompt and accurate

ofce measurements.

Automated duplicate measurements

In «CENTRAL» mode, the WatchBP Ofce Central device
automatically takes two consecutive measurements at 15

The user can manually set measurement intervals of 15, 30,

45 or 60 seconds in CENTRAL mode. (Please see “Setting
measurement intervals” at page 17))

1

15 seconds

2

second intervals on default. At each measurement brachial

blood pressure is measured rst, thereafter the cuff pressure
will be hold around 60 mmHg for 30 seconds for assessing
the central blood pressure value. the readings of the two
brachial blood pressure values are averaged and displayed
and the readings of the two central blood pressure values are
averaged and displayed after the measurement process is
nished. For verifying each measurement separately press

the <<M>> button to see the 2nd measurement, press the
<<M>> button again to see the 1st measurement.

F

11

Three operation modes (cont.)

Simultaneous dual-arm measurements

In «SCREEN» mode, the WatchBP Ofce Central device
measures the patient’s blood pressure on both arms

simultaneously, for determining the arm with the highest

blood pressure value and revealing the possible presence of
peripheral arterial disease. This procedure is recommended

by the ESH and AHA to perform at a patient’s rst visit to the

GP’s practice or hospital.

«SCREEN» mode

Select «SCREEN» mode to perform fully-automated triple
measurements on both arms.

ABI CENTRAL SCREEN

EN

12

WatchBP Ofce Central

Automated triple measurements

In «SCREEN» mode, the WatchBP Ofce Central device
automatically takes three consecutive measurements
on both arms at xed one minute* intervals. After the last

measurement the average of three blood pressure values

is displayed on the LCD screen.

The measuring intervals are xed at one minute in

<<SCREEN>> mode. The interval time can be shortened by
pressing the Start/Stop button during the countdown period.

The arm with the higher blood pressure value should be taken for

ABI measurement or future blood pressure measurements.

60 seconds 60 seconds

1

2 3

F

F