NIBP — Blood Pressure Behavior

TMA's blood pressure model is intentionally different from every other vital. BP behaves like a real NIBP cuff — not like a continuous live reading. This is one of the most clinically important behaviors in TMA, because it teaches students that BP is a snapshot in time.

The "Hidden Until Measured" Model

The Controller can change BP at any time, but changes do not appear on the Display Monitor until the NIBP button is pressed.

• Before any measurement: monitor shows ---/---
• After a measurement: monitor shows the captured value
• Controller changes BP → monitor still shows the previous reading until the next NIBP cycle

The Two Columns for BP

In the Vital Values table on the Controller:

• Current column = what the monitor is displaying (last measured value)
• New column = what the Controller has staged for the next measurement

When NIBP fires, it reads the New column value at the moment the 15-second cycle completes, then updates both the monitor and the Current column.

The 15-Second Cycle

When NIBP is pressed or auto-cycles:

• The previous BP value dims with a "Measuring..." indicator
• The NIBP button is disabled (greyed out) for the cycle duration
• After 15 seconds, the New column value is captured, the monitor updates, and the measurement is logged to BP history

The value is captured at cycle completion — not at button press. If a trend is running, the cuff captures wherever the trend has reached when the cycle ends.

The BP Tile on the Display Monitor

The BP region is split into three boxes:

• Left box — Large BP value (Sys/Dia (MAP)) with two buttons:
  • NIBP button — triggers a manual measurement
  • AUTO button — cycles through OFF, 5 min, 10 min, 15 min. When active, the button background turns green.
• Middle box — Last 5 BP measurements with timestamps. Most recent on top. Format: 120/80 (93) — 14:32. Persists across page refreshes.
• Right box (split) — Temperature on top, Glucose on bottom.

AUTO Modes

Setting AUTO to 5, 10, or 15 minutes makes the system automatically take a BP reading at that interval.

• Interval starts the moment AUTO is set
• Each successful measurement (auto or manual) resets the timer
• Pressing NIBP manually while AUTO is on also resets the timer
• Time remaining between cycles is not displayed

Clear BP Hx (Controller)

A Clear BP Hx button on the Controller near the BP control clears all stored measurements. The middle box on the monitor empties. BP display resets to ---/---. Useful for resetting between scenarios without resetting the full session.

Controller-Side BP Indicators

The Controller shows:

• A red pulsing dot next to "BP" with the text "Measuring" while a cycle is in progress
• A small AUTO indicator showing the current cycle setting (AUTO: OFF, AUTO: 5, etc.)

The Controller does not have a "Trigger NIBP" button. To manually trigger a reading, the instructor opens the Display Monitor on their own device and presses NIBP there.

The NIBP Auto Cycle Toggle (Display Controls)

In Display Controls on the Controller, NIBP Auto Cycle (default ON) toggles the AUTO button visible or hidden on the Display Monitor. Toggle OFF for scenarios where only manual BP reads are appropriate.