Ventilator-initiated prompt or setting regarding detection of asynchrony during ventilation

Patent metadata

Field	Value
Publication number	US-9027552-B2
Application number	US-201213562991-A
Country	US
Kind code	B2
Filing date	Jul 31, 2012
Priority date	Jul 31, 2012
Publication date	May 12, 2015
Grant date	May 12, 2015

Abstract

This disclosure describes systems and methods for monitoring and evaluating ventilatory parameters, analyzing those parameters and providing useful notifications and recommendations to clinicians. That is, modern ventilators monitor, evaluate, and graphically represent multiple ventilatory parameters. However, many clinicians may not easily recognize data patterns and correlations indicative of certain patient conditions, changes in patient condition, and/or effectiveness of ventilatory treatment. Further, clinicians may not readily determine appropriate ventilatory adjustments that may address certain patient conditions and/or the effectiveness of ventilatory treatment. Specifically, clinicians may not readily detect or recognize the presence of asynchrony during ventilation. According to embodiments, a ventilator may be configured to monitor and evaluate diverse ventilatory parameters to detect asynchrony and may issue notifications and recommendations suitable for a patient to the clinician when asynchrony is implicated. The suitable notifications and recommendations may further be provided in a hierarchical format.

First claim

What is claimed is:

1. A ventilator-implemented method for detecting asynchrony during ventilation of a patient, the method comprising:
collecting data associated with ventilatory parameters;
processing the collected ventilatory parameter data, wherein the step of processing the collected ventilatory parameter data comprises deriving ventilatory parameter data from the collected ventilatory parameter data based at least on a background trigger type;
determining that an asynchrony is implicated upon detecting that the processed ventilatory parameter data breaches a received at least one predetermined threshold; and
issuing a smart prompt when the asynchrony is implicated.

2. The method of claim 1 , wherein the step of determining asynchrony further requires determining that the processed ventilatory parameter data breaches the received at least one predetermined threshold at a predetermined frequency.

3. The method of claim 1 , wherein the processed ventilatory parameter data comprises:
at least one of airway flow, airway pressure, and neural respiratory output, and wherein the processed ventilatory parameter data comprises:
at least one of a detected inspiratory trigger and a detected expiratory trigger.

4. The method of claim 1 , wherein the background trigger type is an IE Sync trigger type.

5. The method of claim 1 , wherein the step of determining that asynchrony is implicated comprises:
receiving the predetermined threshold, the predetermined threshold comprising:
a number of first patient efforts detected by the background trigger type must be equal to a number of second patient efforts detected by an active trigger type in a predetermined amount of time;

determining the number of first patient efforts detected by the background trigger type and determining the number of second patient efforts detected by the active trigger type in the predetermined amount of time; and
determining that the number of first patient efforts detected by the background trigger type is not equal to the number of second patient efforts detected by the active trigger type in the predetermined amount of time.

6. The method of claim 1 , wherein the step of determining that asynchrony is implicated comprises:
receiving the predetermined threshold, the predetermined threshold comprising:
a first patient effort detected by the background breath type must occur within 60 milliseconds of a second patient effort detected by an active breath type;

determining when a first patient effort is detected by the background breath type and determining when the second patient effort is detected by the active breath type;
determining that the first patient effort detected by the background breath type is more than 60 milliseconds from the second patient effort detected by the active breath type.

7. The method of claim 1 , wherein the step of determining that asynchrony is implicated comprises:
receiving the predetermined threshold, the predetermined threshold comprising:
a first inspiratory patient effort and an expiratory patient effort is detected by the background trigger type before of a second inspiratory patient effort is detected by an active trigger type;

determining when a first inspiratory patient effort and the expiratory patient effort is detected by the background trigger type and determining when the inspiratory second patient effort is detected by the active trigger type;
determining that the first inspiratory patient effort and the expiratory patient effort are detected by the background trigger type before the second patient effort is detected by the active trigger type.

8. The method of claim 7 , further comprising:
determining an appropriate recommendation message for the issued smart prompt based at least in part on detecting that the processed ventilatory parameter data breaches the received at least one predetermined threshold.

9. The method of claim 7 , further comprising:
identifying one or more ventilatory settings associated with a ventilatory treatment of the patient,
wherein the appropriate recommendation message includes a change to the one or more ventilatory settings, and
wherein the one or more ventilatory settings include at least one of a breath type, an inspiration time, an exhalation time, an inspiratory sensitivity, an expiratory sensitivity, a flow rate, a rise time, a flow pattern, a tidal volume, and an inspiratory pressure.

10. A ventilatory system for issuing a smart prompt when asynchrony is implicated during ventilation of a patient, comprising:
at least one processor; and
at least one memory, communicatively coupled to the at least one processor and containing instructions that, when executed by the at least one processor issue a smart prompt when asynchrony is implicated, the instructions comprising:
detect that asynchrony is implicated for a patient based on a background trigger type;
determine an appropriate notification message;
determine an appropriate recommendation message; and
issue at least one of the appropriate notification message and the appropriate recommendation message.

11. The ventilatory system of claim 10 , the instructions further comprising:
determine processed ventilatory parameter data that implicated asynchrony, and
wherein the determine the appropriate notification message is based at least in part on the processed ventilatory parameter data that implicated asynchrony.

12. The ventilatory system of claim 10 , wherein the appropriate notification message comprises an alert that asynchrony is implicated and information regarding the processed ventilatory parameter data that implicated asynchrony.

13. The ventilatory system of claim 10 , wherein the appropriate recommendation message comprises a primary recommendation message and a secondary recommendation message.

14. The method of claim 10 , the instructions further comprising:
determine one or more ventilatory settings associated with a ventilatory treatment of the patient; and
wherein the determine the appropriate recommendation message is based at least in part on evaluating the one or more ventilatory settings.

15. The method of claim 14 , wherein the one or more ventilatory settings is a breath type.

16. The ventilatory system of claim 15 , wherein the appropriate recommendation message comprises a primary recommendation message and a secondary recommendation message based at least in part on the breath type.

17. The ventilatory system of claim 16 , wherein the primary recommendation message comprises one of:
a recommendation to change to a square flow pattern;
a recommendation to switch to a pressure-targeted breath type;
a recommendation to increase flow rate;
a recommendation to increase trigger sensitivity;
a recommendation to change trigger type;
a recommendation to increase expiratory sensitivity;
a recommendation to increase set PEEP;
a recommendation to lower set respiration rate;
a recommendation to decrease trigger sensitivity;
a recommendation to enable leak compensation;
a recommendation to increase inspiration time;
a recommendation to decrease inspiration time;
a recommendation to decrease the support setting;
a recommendation to increase tidal volume;
a recommendation to decrease tidal volume;
a recommendation to increase inspiration pressure;
a recommendation to increase rise time; and
a recommendation to decrease flow rate.

18. The ventilatory system of claim 16 , wherein the secondary recommendation message comprises:
a recommendation to change to an IE Sync breath tri

Assignees

• Angelico Phyllis
• Doyle Peter R
• Kimm Gardner
• Milne Gary
• Covidien Lp

Inventors

• Angelico Phyllis
• Doyle Peter R
• Kimm Gardner
• Milne Gary

Classifications

• A61M2230/432

  partial CO2 pressure (P-CO2) · CPC title

• A61M16/0051 Primary

  with alarm devices · CPC title

• A61M2016/0036

  in the breathing tube and used in both inspiratory and expiratory phase · CPC title

• A61M2205/18

  with alarm · CPC title

• A61M2205/3553

  remote, e.g. between patient's home and doctor's office · CPC title