To adjust the velocity scale, tap the button Low Flow/High Flow button or drag baseline.To adjust scroll speed of trace, tap the “Slow Scroll/Fast Scroll” button.Tap the Update B-mode button to manually pause spectrum and restart B-mode.Hold and drag the sample volume gate, which will automatically pause the spectrum and restart B-mode reference image.To adjust the position of the sample volume:.If you do not see a trace or hear a sound, adjust the position of the sample volume. Once positioned, tap “Start Audio” to start both the fetal heart sound and the spectral trace.Hold and drag the sample volume gate (the square region along the Doppler line) to the desired location within the fetus’s heart.Under Actions, select the Fetal Heart Sounds mode.While scanning, enter the OB 2/3 preset.In order to adjust the Gain and Depth of the B-mode reference image, exit Fetal Heart Sounds and optimize the image in the B-Mode. Note that the control defines your current state. Adjust the Scroll Speed of the Fetal Heart Sounds trace by touching the Slow Scroll/Fast Scroll control in the middle of the screen.Adjust the Scale to optimize for high or low flow by touching the Low Flow/High Flow control in the middle of the screen. Adjust volume of the fetus's heart sound and the gain of spectral trace by dragging finger left and right on the trace while trace is live.Switch between live audio playing and live B-mode by touching the Start Audio/Update B-mode button.Listen to the sound of the fetus’s heart when audio is enabled.View and adjust the position of the sample volume by holding and dragging the gate.Fetal heart sounds is available in the OB 2/3 preset for iQ+ users in the US and Canada. Fetal heart sounds is a mode that allows the user and the patient to hear the sound of the fetus's heart and simultaneously displays the pulsed wave spectrum.
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