Fluid bolus detection
The present disclosure provides systems that include a flow probe that senses fluid flow or mass flow of fluid delivery to a patient. Based at least in part on the sensed fluid or mass flow, the flow probe provides flow-related data (e.g., volume or mass flow rate) that the system uses to derive a volume of fluid being delivered. The fluid can be delivered from an IV bag, another in-line port, or a combination of the two. The disclosed systems provide fluid volume and/or fluid rate for display to a clinician and an informative understanding of what volume of fluid/mass a patient has received.
1. A monitor for tracking a fluid bolus, the monitor comprising:
a display;
a memory; and
a processor connected to the display and to the memory, the processor configured to execute instructions that cause the monitor to:
receive flow signals indicative of flow-related data from a flow probe that is communicatively coupled to the monitor, the flow probe configured to measure fluid flow in a conduit between one or more fluid sources and a patient;
send a control signal to a flow controller that causes the flow controller to initiate a fluid bolus from one of the one or more fluid sources, the flow controller spatially separated from the flow probe;
automatically detect initiation of the fluid bolus responsive to the received flow-related data from the flow probe indicating that a flow rate has exceeded a first threshold flow rate value;
display a prompt on the display indicating that the fluid bolus has started, the prompt including real-time flow-related data received from the flow probe;
automatically detect termination of the fluid bolus responsive to the received flow-related data from the flow probe indicating that the flow rate has fallen below a second threshold flow rate value;
determine a total volume of fluid delivered between the initiation of the fluid bolus and the termination of the fluid bolus;
responsive to the determined total volume of fluid being within a line flush volume range, display a prompt on the display indicating that the fluid bolus is categorized as a line flush; and
responsive to the determined total volume of fluid exceeding a fluid bolus volume threshold, display a prompt on the display indicating the total volume of fluid delivered and that the fluid bolus is categorized as a fluid bolus.
2. The monitor of claim 1 wherein the processor is further configured to display hemodynamic parameters received from a hemodynamic sensor.
3. The monitor of claim 1 wherein the processor is further configured to receive input based on a user interaction with the prompt instructing the flow controller to terminate the fluid bolus.
4. The monitor of claim 1 wherein the processor is further configured to receive input based on a user interaction with a second prompt discarding the flow-related data determined for the fluid bolus.
5. The monitor of claim 1 wherein the processor is further configured to receive input based on a user interaction with a second prompt accepting the flow-related data determined for the fluid bolus.
6. The monitor of claim 1 wherein the processor is further configured to execute the instructions without receiving input from a user.
7. The monitor of claim 1 wherein the processor is configured to determine that the fluid bolus is desirable based at least in part on measured hemodynamic parameters or flow-related data.
8. The monitor of claim 1 wherein the processor is further configured to determine that a fluid bolus is desirable.
9. The monitor of claim 8 wherein the processor is further configured to display a second prompt on the display indicating that a fluid bolus is suggested.
10. The monitor of claim 1 wherein the processor is further configured to display a second prompt on the display indicating that the fluid bolus has ended, the second prompt including flow-related data determined for the fluid bolus.
11. The monitor of claim 1 wherein the processor is further configured to send a control signal to the flow controller that causes the flow controller to terminate the fluid bolus.
12. The monitor of claim 1 wherein the flow controller is coupled to the conduit between the one or more fluid sources and the patient.
13. The monitor of claim 1 wherein the flow controller includes one or more mechanical components that manipulate the conduit between the one or more fluid sources and the patient.
14. A method for automatically detecting and tracking a fluid bolus, the method comprising:
receiving, from a flow probe, signals containing flow-related data for fluid flowing in a conduit from one or more fluid sources to a patient;
sending a control signal to a flow controller that causes the flow controller to initiate a fluid bolus from one of the one or more fluid sources, the flow controller spatially separated from the flow probe;
detecting initiation of the fluid bolus responsive to the received flow-related data from the flow probe indicating that a flow rate has exceeded a first threshold flow rate value;
displaying a prompt on a display indicating that the fluid bolus has started, the prompt including real-time flow-related data received from the flow probe;
detecting termination of the fluid bolus responsive to the received flow-related data from the flow probe indicating that a flow rate has fallen below a second threshold flow rate value;
determining a total volume of fluid delivered between the initiation of the fluid bolus and the termination of the fluid bolus;
responsive to the determined total volume of fluid being within a line flush volume range, displaying a prompt on the display indicating that the fluid bolus is categorized as a line flush; and
responsive to the determined total volume of fluid exceeding a fluid bolus volume threshold, displaying a prompt on the display indicating the total volume of fluid delivered and that the fluid bolus is categorized as a fluid bolus.
15. The method of claim 14 further comprising displaying hemodynamic parameters received from a hemodynamic sensor.
16. The method of claim 14 wherein the method executes without receiving input from a user.
17. The method of claim 14 further comprising determining that a fluid bolus is desirable.
18. The method of claim 17 wherein determining that the fluid bolus is desirable is based at least in part on measured hemodynamic parameters or flow-related data.
19. The method of claim 18 further comprising displaying a second prompt on the display indicating that a fluid bolus is suggested.
20. The method of claim 14 further comprising sending a control signal to the flow controller that causes the flow controller to terminate the fluid bolus.