System for determining confidence in respiratory rate measurements
View Patent ↗This disclosure describes, among other features, systems and methods for using multiple physiological parameter inputs to determine multiparameter confidence in respiratory rate measurements. For example, a patient monitoring system can programmatically determine multiparameter confidence in respiratory rate measurements obtained from an acoustic sensor based at least partly on inputs obtained from other non-acoustic sensors or monitors. The patient monitoring system can output a multiparameter confidence indication reflective of the programmatically-determined multiparameter confidence. The multiparameter confidence indication can assist a clinician in determining whether or how to treat a patient based on the patient's respiratory rate.
1. A method of triggering an alarm based on information related to a physiological parameter, the method comprising:
by a processor:
providing functionality for a clinician to specify an alarm delay time;
monitoring a first physiological parameter reflecting physiological information obtained from a physiological sensor coupled to a patient, the first physiological parameter comprising respiratory rate;
determining whether the first physiological parameter has satisfied an a first alarm threshold for an amount of time corresponding to the alarm delay time;
triggering an alarm in response to said determining that a value of the first physiological parameter has satisfied the first alarm threshold
monitoring a second physiological parameter, the second physiological parameter comprising oxygen saturation;
determining whether the second physiological parameter has fallen below a second alarm threshold;
automatically reducing the alarm delay time in response to the second physiological parameter having fallen below the second alarm threshold; and
modifying a display of a confidence indicator based on the amount of time that the first physiological parameter has satisfied the first alarm threshold.
2. The method of claim 1 , wherein said automatically reducing the alarm delay time comprises reducing the alarm delay time to a value that corresponds to an amount that the second physiological parameter has fallen below the second alarm threshold.
3. The method of claim 1 , wherein said providing functionality for a clinician to specify the alarm delay time comprises providing a user interface comprising an option to adjust the alarm delay time.
4. A method of triggering an alarm based on information related to a physiological parameter, the method comprising:
by a processor:
monitoring a first physiological parameter reflecting physiological information obtained from a physiological sensor coupled to a patient, the first physiological parameter comprising respiratory rate;
automatically adjusting an alarm delay threshold for the first physiological parameter based on a value of a second physiological parameter, the second physiological parameter comprising oxygen saturation, wherein said adjusting comprises reducing the alarm delay threshold in response to the value of the second physiological parameter meeting a first threshold;
determining whether the first physiological parameter has satisfied a second threshold for an amount of time corresponding to the alarm delay threshold; and
triggering an alarm in response to said determining that a value of the first physiological parameter has satisfied the second threshold for the amount of time corresponding to the alarm delay threshold.
5. The method of claim 4 , wherein an increase in the oxygen saturation causes said adjusting to increase the alarm delay time.
6. The method of claim 4 , wherein said automatically adjusting the alarm delay time comprises reducing the alarm delay time to a value that corresponds to an amount that the second physiological parameter has fallen below the first threshold.
7. The method of claim 4 , further comprising providing functionality for a user to adjust the alarm delay time.
8. The method of claim 4 , further comprising outputting an indicator configured to reflect an amount of time which the first physiological parameter has satisfied the second threshold.
9. The method of claim 8 , wherein the indicator is a confidence indicator.
10. The method of claim 8 , wherein said outputting the indicator comprises modifying the indicator to reflect a countdown to the alarm delay threshold.
11. The method of claim 8 , wherein said outputting the indicator comprises blinking the indicator to indicate that the value of the first physiological parameter has satisfied the second threshold prior to reaching the alarm delay time.
12. The method of claim 4 , further comprising providing functionality for a clinician to initially specify the alarm delay time.