Nasal high-flow respiratory rate monitoring method and respiratory support equipment thereof
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A technology for breathing rate and supporting equipment, which can be used in respirator, evaluation of respiratory organs, other medical devices, etc., and can solve problems such as increasing costs
Active Publication Date: 2021-09-10
THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL +1
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In order to monitor the respiratory frequency, this patent adds an additional respiratory monitoring module, that is, at least one...
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Embodiment 1
[0055] refer to Figure 1-Figure 3 , the invention provides a method for monitoring nasal high-flow respiratory frequency, the steps comprising:
[0056] S1. Based on pressure fluctuations, it is judged whether it is in a breathing state,
[0057] If not, the pressure sensor continues to obtain the pressure AD value;
[0058] If yes, the flow sensor obtains N flow AD values and consumption time T, and calculates the average sampling frequency N / T;
[0059] The method for judging whether to be in a breathing state based on pressure fluctuations, the steps include:
[0060] S11. Obtain the first pressure standard deviation of the high-flow respiratory support device under no-load condition and different flow rates, which is the pressure standard deviation threshold value under different flow rates;
[0061] The no-load state of the high-flow non-invasive respiratory humidification therapy device includes that the patient does not wear a nasal catheter or the worn nasal cath...
Embodiment 2
[0089] The present invention also provides a respiratory support device adopting the above-mentioned nasal high-flow respiratory frequency monitoring method, including:
[0090] An acquisition module, configured to acquire M pressure values and N flow values;
[0091] The storage module is used to store the pressure standard deviation threshold corresponding to each flow value in the no-load state, and is used to store the flow AD array;
[0092] The processing module is used to calculate the second pressure standard deviation SD of the M pressure values in the current state, and is also used to perform discrete fast Fourier transform on the N flow AD values, and obtain the point i corresponding to the highest amplitude frequency to obtain the current breathing frequency;
[0093] The determination module is used to compare the second pressure standard deviation SD under the current state with the pressure standard deviation threshold under the corresponding flow value, s...
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Abstract
The invention provides a nasal high-flow respiratory rate monitoring method and respiratory support equipment thereof, and the respiratory rate monitoring method comprises the steps: acquiring M pressure values through a pressure sensor of the high-flow respiratory support equipment to obtain a second pressure standard deviation SD of the M pressure values in a current state, and comparing the second pressure standard deviation with a pressure standard deviation threshold value under corresponding flow in a no-load state so as to determine whether the high-flow respiratory support equipment is in a respiratory use state or not; and when it is judged that the high-flow respiratory support equipment is in the respiratory use state, acquiring N flow AD values through a flow sensor of the high-flow respiratory support equipment, conducting discrete fast Fourier transform on the N flow AD values, and acquiring a point i corresponding to a highest amplitude frequency is obtained, thereby obtaining a current respiratory rate; By the adoption of the monitoring method, the real-time respiratory rate can be obtained only through the pressure sensor and the flow sensor of the high-flow respiratory support equipment; the use effect of the high-flow respiratory support equipment can be effectively evaluated, and the product intelligence is improved.
Description
technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a method for monitoring nasal high-flow respiratory frequency and respiratory support equipment thereof. Background technique [0002] Nasal high-flow devices such as high-flow non-invasive respiratory humidification therapy devices are oxygen therapy devices that directly deliver a certain oxygen concentration of air-oxygen mixed with high-flow gas to patients through a nasal catheter without sealing, which can quickly improve oxygen. combine. Clinically, parameters such as flow are adjusted based on the patient's respiratory rate, etc., and this adjustment can be automatically realized on the machine after monitoring the respiratory rate. At the same time, according to the relevant literature ([1]Roca O, Messika J, CaraltB, et al. Predicting success of high-flow nasal cannula in pneumonia patients with hypoxemic respiratory failure: The utility of the ROX i...
Claims
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