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ViSi Mobile Smart Tip - Blood Pressure Cuff

The System’s disposable components, including the Cuff, are contained in the Disposable Kit. The Disposable Kits are designated as S (20-26 cm), M(25-34 cm), M+(25-34 cm), L(32-43 cm), and L+(32-43 cm) based on the Cuff size.

Selection of the correct ViSi Mobile Disposable Cuff size is necessary to ensure accurate NIBP measurements. A Cuff that is too small can result in a falsely high NIBP measurement. A Cuff that is too large can result in a falsely low NIBP measurement.

The accuracy of NIBP measurements is influenced by several factors:

  • Correct cuff size: The accuracy of the blood pressure readings is directly related to the proper size BP cuff being used.
  • Correct cuff placement on the arm
  • The position of the upper arm in relation to the heart at the time of the measurement
  • Motion artifacts


     

    Take Note Before Applying the ViSi Mobile Blood Pressure Cuff

  • The ViSi Mobile Disposable Cuff should be snug enough to support the Cuff Module while not impairing circulation when deflated
  • ViSi Mobile blood pressure measurements (NIBP and cNIBP) have not been clinically evaluated in the presence of atrial or ventricular arrhythmias. Use alternative BP methods if these arrhythmias are present.
  • Inflate the ViSi Mobile Disposable Cuff only after proper application to the patient’s limb. Avoid touching the ViSi Mobile Disposable Cuff during inflation as this may disrupt the measurement
  • Apply the blood pressure cuff to the arm with the artery marker in line with the brachial artery
  • Apply the blood pressure cuff to the arm with the artery marker in line with the brachial artery
  • If the BP cuff is too small – select larger cuff; too large, select smaller cuff: Ensure the BP cuff size is the same on both arms and the correct size for the arm.
  • Measurements should be taken at the same time.

 

How To Apply The Cuff Module

  1. Remove the Cuff from the Disposable Kit.
  2. Squeeze as much air out of the Cuff as possible.
  3. Ensure that the patient is resting so that the upper arm muscles are relaxed. The level of the middle of the Cuff, while the arm is at rest, should be approximately at heart level.
  4. Connect the Cuff Module securely to the Cuff.
  5. Wrap the cuff around the upper part of the same arm to which the Monitor is attached.
    • Align the bottom part of the Cuff approximately 1” above the antecubital fossa.
    • Align the artery marker on the Cuff with the brachial artery.
    • The connector for the Cuff Module should be to the outside of the arm, away from the body.
    • The cable from the Cuff Module should be hanging down in the direction of the Monitor.
    • Have the patient remain still to avoid the introduction of unnecessary motion artifact

The ViSi Mobile Disposable Cuff is designed to be used on the same arm as the other ViSi Mobile sensors. Only attach one ViSi Mobile Cuff Module to the ViSi Mobile Monitor.

  • Plug the Cuff Module into any of the open ports on the flat end of the Monitor with the connector contacts facing upwards. The NIBP Start button will be enabled, prompting you to start a Cuff inflation.

 

Setting Up and Taking NIBP Measurements

Here are simple steps on getting started:

 

Selecting Blood Pressure Mode

  • The Monitor will automatically default to an NIBP mode depending on which sensors are connected. You only need to select an NIBP mode if you want to change the default.

To select the blood pressure mode:

  1. Navigate to the BP Management screen
    • Touch Menu on the Vital Signs screen to display the Menu screen.
    • Touch Blood Pressure Settings to display the BP Management screen. The BP Management screen appears
  2. Select the desired NIBP mode
  • If Automatic is selected, touch the Up or Down arrow to increase or decrease the time interval.
  • Touch Confirm to confirm the new setting or Touch Cancel to return to the Menu screen.

Once you have touched Confirm, the cuff inflation method setting is saved and the system returns to the Vital Signs screen. If you touch Cancel, the system discards the changed settings and returns to the Menu screen.

 

Take a single NIBP measurement or initiate Automatic NIBP Measurements

a. Apply the Cuff and Cuff Module.

    • After the Cuff Module has been connected to the Monitor, the NIBP vital sign numerics (Systolic, Diastolic, and MAP) display as “xx”, indicating no measurement has been taken.

    b. Touch Start NIBP to start a measurement
    • After a few seconds to zero and calibrating the barometric pressure, the Cuff begins inflating. An inflation pressure indicator bar, located to the left of the NIBP numerics, increases/decreases in height as the pressure increases/decreases in the Cuff. The actual cuff pressure is displayed under the NIBP label. Once the Cuff begins to inflate, the Start NIBP button changes to Stop NIBP. [An NIBP measurement currently in progress may be stopped at any time] Touch Stop NIBP to stop the cuff inflation and NIBP measurement.
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  2. If unexpected readings occur, confirm the correct application of the ViSi Mobile Disposable Cuff.
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  4. Upon completion of a successful measurement, the Systolic, Diastolic, and MAP measurements are displayed in white. The time of the measurement is displayed below the NIBP label. If there is no other heart rate/pulse rate source (i.e. Thumb Sensor or Chest Sensor are not connected to the Monitor), then a one-time PR from the NIBP measurement is displayed for 30 seconds.
    • If the NIBP measurement was unsuccessful, the Cuff Module automatically retries to measure the blood pressure. “Retry” messages appear on the screen directly below the NIBP label. A maximum of 3 attempts will be made.
    • If the failure is due to a cuff leak or cuff occlusion, there is no retry and the LEAK or OCCL message appears on the screen directly below the NIBP label.

For more information on NIBP Monitoring, Pre-pie or Post-pie troubleshoot refer to our other ViSi Mobile Smart Tip articles.

 

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Filed Under: ViSi Mobile, ViSi Tip of the Month