CN108968964A - Pulmonary function test (pft) system and test method - Google Patents
Pulmonary function test (pft) system and test method Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/091—Measuring volume of inspired or expired gases, e.g. to determine lung capacity
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- A61B5/087—Measuring breath flow
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Abstract
The present invention provides a kind of pulmonary function test (pft) systems, comprising: indicating unit, for exporting breathing pattern guidance signal；Acquisition unit, for acquiring the breath data in subject's respiratory；Processor is connect with the indicating unit and the acquisition unit；Storage medium, for storing a plurality of instruction, described instruction makes the processor calculate and be compared with preset condition to the breath data when being executed by the processor, obtain processing result, and export breathing pattern according to processing result control instructions unit and guide signal.The present invention also provides a kind of pulmonary function test (pft) methods.The present invention is by being arranged indicating unit in pulmonary function test (pft) system, and by indicating unit, output breathing pattern guidance signals direct subject is breathed, and reduces the otherness manually instructed, substantially increases the application range of pulmonary function test (pft).
Description
Technical field
The invention belongs to medical detection technologies, more specifically to a kind of pulmonary function test (pft) system and test side
Method.
Background technique
Forced vital capacity (FVC), static lung capacity (SVC), maximal ventilatory volume (MVV) etc. are the common of pulmonary function test (pft)
Index.When subject carries out pulmonary function test (pft), need to carry out breathing ability as required according to the type of pulmonary function test (pft) index
Obtain effective test data.At present during pulmonary function test (pft), subject is usually to exhale under the guidance of medical staff
It inhales, this is just to limit the application range of pulmonary function test (pft)；And artificially instruct otherness big, it is quasi- to reduce pulmonary function test (pft) result
True property.
The present invention provides a kind of new pulmonary function test (pft) systems and test method, by setting in pulmonary function test (pft) system
Indicating unit is set, output breathing pattern guidance signals direct subject breathes by indicating unit, reduces and manually instructs
Otherness substantially increases the application range of pulmonary function test (pft).
Summary of the invention
The purpose of the present invention is to provide a kind of new pulmonary function test (pft) systems and test method, it is intended to solve artificial guidance
The low problem of pulmonary function test (pft) accuracy caused by tidal air.
It is an object of the present invention to provide a kind of pulmonary function test (pft) systems, comprising:
Indicating unit, for exporting breathing pattern guidance signal；
Acquisition unit, for acquiring the breath data in subject's respiratory；
Processor is connect with the indicating unit and the acquisition unit；
Storage medium, for storing a plurality of instruction, described instruction exhales the processor to described
It inhales data calculate and be compared with preset condition, obtains processing result, and export according to processing result control instructions unit
Breathing pattern guides signal.
Further, multiple breathing detection moulds determined according to pulmonary function detection index are also stored in the storage medium
Type, the breathing detection model include multiple breathing detection stages, and the indicating unit exports not in the different breathing detection stages
The mode of sharing a common fate guides signal.
Further, the indicating unit includes human-computer interaction interface and voice alerting unit；The human-computer interaction interface
For exporting breathing pattern guide picture or text prompt；The voice alerting unit is mentioned for exporting breathing pattern guidance voice
Show.
The present invention also provides a kind of pulmonary function test (pft) methods, comprising the following steps:
S1, the current breathing detection stage is selected from breathing detection model, the breathing detection model includes multiple breathing detections
Stage；
S2, it is breathed according to the method for the current breathing pattern guidance signal of indicating unit output, the indicating unit is not
The same breathing detection stage exports different breathing pattern guidance signals；
S3, the breath data in the acquisition current breathing detection stage；
S4, the breath data is calculated, is compared with preset condition, obtain processing result, the indicating unit root
Signal is guided according to processing result output breathing pattern.
Further, the breathing detection model includes static lung capacity detection model, forced vital capacity detection model and
Maximal ventilatory volume detection model；The breathing detection stage includes eupnea, is exhaled completely, complete air-breathing, and forced expiration is used
Power air-breathing and rapid breathing.
Further, the breathing pattern guidance signal is that eupnea guides signal, the step S4 are as follows:
S41, end-tidal lung volume error is calculated according to the respiration parameter at least three eupnea gas period；
S42, when the end-tidal lung volume error reaches lung volume error threshold, return to the step S2；When the expiration
When last lung volume is less than lung volume error threshold, the indicating unit exports the breathing pattern guidance letter in next breathing detection stage
Number；The lung volume error threshold is 100 milliliters.
Further, the breathing pattern guidance signal is to exhale to guide signal, the step S4 completely are as follows:
S41, end-tidal volume variation when generally calling gas has been calculated according to respiration parameter；
S42, when the end-tidal volume variation reach expiration volume change threshold when, return to the step S2；When the expiration
When last volume variation is less than expiration volume change threshold, the breathing pattern that the indicating unit exports next breathing detection stage draws
Lead signal；The expiration volume change threshold is 0.025 liter/second.
Further, the breathing pattern guidance signal is that complete air-breathing guides signal, the step S4 are as follows:
S41, changed according to air-breathing end volume when respiration parameter calculating complete air-breathing；
S42, when the air-breathing end volume variation reach aspirated volume change threshold when, return to the step S2；When the air-breathing
When last volume variation is less than aspirated volume change threshold, the breathing pattern that the indicating unit exports next breathing detection stage draws
Lead signal；The aspirated volume change threshold is 0.025 liter/second.
Further, the breathing pattern guidance signal is that forced expiration guides signal, the step S4 are as follows:
S41, expiratory duration is calculated according to respiration parameter；
S42, when the expiratory duration be less than expiratory duration threshold value when, return to the step S2；It is exhaled when the expiratory duration reaches
When gas time threshold, the indicating unit exports the breathing pattern guidance signal in next breathing detection stage；Work as subject age
When no more than 10 years old, the expiratory duration threshold value is 3 seconds, and when subject age is more than 10 years old, the expiratory duration threshold value is 6
Second.
Pulmonary function test (pft) system of the invention is exhaled by indicating unit output breathing pattern guidance signals direct subject
It inhales, reduces the otherness manually instructed, substantially increase the application range of pulmonary function test (pft)；In addition, test side of the invention
Method guides signal according to the breathing pattern that collected breath data control instructions unit exports, and effectively lung function can be avoided to survey
Now invalid situation is tried out, the accuracy of pulmonary function test (pft) is improved.
Detailed description of the invention
Fig. 1 is the schematic block diagram of the pulmonary function test (pft) system in first embodiment of the invention.
The functional block diagram of pulmonary function test (pft) method when Fig. 2 is eupnea in a specific embodiment of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.
With reference to Fig. 1, first embodiment of the invention provides a kind of pulmonary function test (pft) system, comprising:
Indicating unit, for exporting breathing pattern guidance signal；
Acquisition unit, for acquiring the breath data in subject's respiratory；
Processor is connect with the indicating unit and the acquisition unit；
Storage medium, for storing a plurality of instruction, described instruction exhales the processor to described
It inhales data calculate and be compared with preset condition, obtains processing result, and export according to processing result control instructions unit
Breathing pattern guides signal.
Pulmonary function test (pft) system provided in this embodiment guides signals direct subject by indicating unit output breathing pattern
It is breathed, this programme reduces the otherness manually instructed, substantially increases the application range of pulmonary function test (pft)；In addition, this
Scheme guides signal according to the breathing pattern that collected breath data control instructions unit exports, and can effectively avoid lung function
There is invalid situation in test, improves the accuracy of pulmonary function test (pft).
Further, multiple breathing detection moulds determined according to pulmonary function detection index are also stored in the storage medium
Type, the breathing detection model include multiple breathing detection stages, and the indicating unit exports not in the different breathing detection stages
The mode of sharing a common fate guides signal.
Further, the breathing detection stage includes but is not limited to: eupnea, completely expiration, are exerted oneself at complete air-breathing
Expiration, forced suction, rapid breathing etc..
Pulmonary function test (pft) system of the invention can be used for detecting forced vital capacity (FVC), static lung capacity (SCV), maximum
The indexs such as ventilatory capacity (MVV).It should be noted that it is directed to same pulmonary function detection index, it can be in the pulmonary function detection system
Multiple and different breathing detection models is set in system, and subject can select suitable breathing detection model according to own situation.
Such as: when detecting FVC using the lung function instrument test macro of the present embodiment, the breathing detection model may is that eupnea
→ air-breathing → forced expiration → forced suction completely, is also possible to: eupnea → exhale completely → complete air-breathing → is firmly exhaled
Gas → forced suction；When adding survey SVC using the lung function instrument test macro of the present embodiment, the breathing detection model be may is that
Eupnea → exhale completely → complete air-breathing → eupnea is also possible to: eupnea → air-breathing completely → and exhales completely
→ eupnea, it may also is that eupnea → complete expiration → eupnea → complete air-breathing → eupnea；Using this reality
When applying the lung function instrument test macro detection MVV of example, the breathing detection model may is that eupnea → rapid breathing.
The indicating unit of this programme exports different breathing patterns in the different breathing detection stages and guides signals, thus guidance by
Examination person is breathed as required, realizes the purpose of detection lung function index.
Further, the indicating unit includes human-computer interaction interface and voice alerting unit；The human-computer interaction interface
For exporting breathing pattern guide picture or text prompt；The voice alerting unit is mentioned for exporting breathing pattern guidance voice
Show.
This programme can guide signal by output breathing pattern, from subject's vision and acoustically guide, make lung
Function test system uses more convenient.
Further, the human-computer interaction interface can also show breathing detection model and breathing detection stage, by from
Human-computer interaction interface can directly select breathing detection model or breathing detection stage.
It should be noted that in this programme to the selection in breathing detection stage can be by the step of breathing detection model by
Step is automatic to be carried out, and is also possible to manually select by human-computer interaction interface.Under normal conditions, it is grasped by the scheme that step carries out automatically
Make simply, so as to save the testing time；But when cannot repeatedly smoothly complete in a certain breathing detection stage, it can also pass through
The mode manually selected selects the breathing detection stage.
Second embodiment of the invention provides a kind of pulmonary function test (pft) system lung function survey using any of the above-described embodiment
Method for testing, comprising the following steps:
S1, the current breathing detection stage is selected from breathing detection model, the breathing detection model includes multiple breathing detections
Stage；
S2, it is breathed according to the method for the current breathing pattern guidance signal of indicating unit output, the indicating unit is not
The same breathing detection stage exports different breathing pattern guidance signals；
S3, the breath data in the acquisition current breathing detection stage；
S4, the breath data is calculated, is compared with preset condition, obtain processing result, the indicating unit root
Signal is guided according to processing result output breathing pattern.
It should be noted that the pulmonary function test (pft) method of the present embodiment can be used for detecting forced vital capacity (FVC), static lung
It is living to measure the indexs such as (SCV), maximal ventilatory volume (MVV).According to the breathing detection model that pulmonary function detection index determines, gradually to exhaling
The respiratory for inhaling the breathing detection stage in detection model is detected, so as to obtain pulmonary function detection index value.
To detect the breathing detection model " eupnea → exhale → complete air-breathing → forced expiration → completely firmly of FVC
For air-breathing ", the breathing detection model of the present embodiment is defaulted the above-mentioned breathing detection stage and is carried out continuously, when upper breathing inspection
After the survey stage, system default enters next detection-phase.In the present embodiment step S1, for breathing detection when starting to measure
The selection in stage, has no specifically limited, can be selection eupnea, complete air-breathing, appointing in forced expiration or forced suction
One breathing detection stage in the follow-up process can be by manually selecting entrance as current detection stage when starting measurement
Next step, can also be automatically into next breathing detection stage.Preferably, current breathing detection stage when starting measurement is
First breathing detection stage in breathing detection model, when starting measurement in this programme the preferably current breathing detection stage be
" eupnea ".This programme can be completed the test in breathing detection stage by step automatically during the test, without setting manually
It sets.
In a specific embodiment, according to " eupnea → exhale completely → air-breathing → forced expiration completely → is exerted oneself
The breathing detection model inspection FVC of air-breathing ", measurement procedure refer to Fig. 2.
When starting measurement, in step sl, selecting the current breathing detection stage is eupnea.
S2 is entered step, is breathed according to the method that normal breathing patterns guide signal.
In step s3, the respiration parameter in respiratory is acquired, it should be noted that need to acquire at least in this programme
The respiration parameter in 3 eupnea gas periods.
In step S41, end-tidal lung volume error is calculated according to above-mentioned respiration parameter.In the present solution, if tidal air
Period is more than 3 times, can calculate end-tidal lung volume error according to the respiration parameter in last 3 periods.
In step S42, judge whether end-tidal lung volume error reaches lung volume error threshold, is missed when reaching lung volume
When poor threshold value, show that tidal air stability is inadequate, then return step S2, re-starts Breath collection；When end-tidal lung volume is missed
When difference is less than lung volume error threshold, S43 is entered step, that is, enters next breathing detection stage；The lung volume error threshold
It is 100 milliliters.Enter the breathing detection stage exhaled completely in the present embodiment.
The present embodiment is carried out in the breathing detection stage exhaled completely, subject according to the complete method for exhaling guidance signal
Breathing acquires breath data, and principle is identical as during eupnea, and details are not described herein.The difference is that the step
Rapid S4 are as follows:
S41 ', end-tidal volume variation when generally calling gas has been calculated according to respiration parameter；
S42 ', when the end-tidal volume variation reach expiration volume change threshold when, return to the step S2；When the expiration
When last volume variation is less than expiration volume change threshold, S43 is entered step；The expiration volume change threshold be 0.025 liter/
Second；
S43 ', into next breathing detection stage, the indicating unit exports complete air-breathing and guides signal.
In the breathing detection stage of complete air-breathing, the step S4 are as follows:
S41 ' ', changed according to air-breathing end volume when respiration parameter calculating complete air-breathing；
S42 ' ', when the air-breathing end volume variation reach aspirated volume change threshold when, return to the step S2；When the suction
When volume variation in gas end is less than aspirated volume change threshold, S43 is entered step；The aspirated volume change threshold be 0.025 liter/
Second；
S43 ' ', into next breathing detection stage, the indicating unit output forced expiration guides signal.
For the breathing detection stage of forced expiration, it should be noted that under it judges whether respiratory can enter
There are two types of the schemes of one step, and wherein the first judgment method please refers to the step S4 of complete expiration phase, second of judgment method
It is as follows, the step S4 are as follows:
S41 ' ' ', expiratory duration is calculated according to respiration parameter；
S42 ' ' ', when the expiratory duration be less than expiratory duration threshold value when, return to the step S2；When the expiratory duration reaches
When expiratory duration threshold value, S43 is entered step；When subject age is no more than 10 years old, the expiratory duration threshold value is 3 seconds, when
When subject age is more than 10 years old, the expiratory duration threshold value is 6 seconds；
S43 ' ' ', into next breathing detection stage, the indicating unit output forced suction guides signal.
It should be noted that in the breathing detection stage of forced suction, exhaled with above-mentioned complete air-breathing the step of the S4
The method for inhaling detection-phase is identical.
The present embodiment completes all testing procedures after the completion of the forced suction stage.
The present embodiment determines breathing guidance signal according to the actually detected respiration parameter arrived, improves pulmonary function test (pft) method
Accuracy, the case where effectively avoiding the occurrence of measurement error.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of pulmonary function test (pft) system characterized by comprising
Indicating unit, for exporting breathing pattern guidance signal；
Acquisition unit, for acquiring the breath data in subject's respiratory；
Processor is connect with the indicating unit and the acquisition unit；
Storage medium, for storing a plurality of instruction, described instruction exhales the processor to described
It inhales data calculate and be compared with preset condition, obtains processing result, and export according to processing result control instructions unit
Breathing pattern guides signal.
2. pulmonary function test (pft) system according to claim 1, which is characterized in that also stored in the storage medium multiple
According to the breathing detection model that pulmonary function detection index determines, the breathing detection model includes multiple breathing detection stages, institute
It states indicating unit and exports different breathing pattern guidance signals in the different breathing detection stages.
3. pulmonary function test (pft) system according to claim 2, which is characterized in that the indicating unit includes human-computer interaction circle
Face and voice alerting unit；The human-computer interaction interface is for exporting breathing pattern guide picture or text prompt；The voice
Prompt unit is for exporting breathing pattern guidance voice prompting.
4. a kind of pulmonary function test (pft) method, which comprises the following steps:
S1, the current breathing detection stage is selected from breathing detection model, the breathing detection model includes multiple breathing detections
Stage；
S2, it is breathed according to the method for the current breathing pattern guidance signal of indicating unit output, the indicating unit is not
The same breathing detection stage exports different breathing pattern guidance signals；
S3, the breath data in the acquisition current breathing detection stage；
S4, the breath data is calculated, is compared with preset condition, obtain processing result, the indicating unit root
Signal is guided according to processing result output breathing pattern.
5. pulmonary function test (pft) method according to claim 4, which is characterized in that the breathing detection model includes static lung
Amount detection model living, forced vital capacity detection model and maximal ventilatory volume detection model；The breathing detection stage includes normal
Breathing is exhaled completely, complete air-breathing, forced expiration, forced suction and rapid breathing.
6. pulmonary function test (pft) method according to claim 5, which is characterized in that the breathing pattern guidance signal is normal
Breathing guidance signal, the step S4 are as follows:
S41, end-tidal lung volume error is calculated according to the respiration parameter at least three eupnea gas period；
S42, when the end-tidal lung volume error reaches lung volume error threshold, return to the step S2；When the expiration
When last lung volume is less than lung volume error threshold, the indicating unit exports the breathing pattern guidance letter in next breathing detection stage
Number；The lung volume error threshold is 100 milliliters.
7. pulmonary function test (pft) method according to claim 5, which is characterized in that the breathing pattern guidance signal is complete
It exhales and guides signal, the step S4 are as follows:
S41, end-tidal volume variation when generally calling gas has been calculated according to respiration parameter；
S42, when the end-tidal volume variation reach expiration volume change threshold when, return to the step S2；When the expiration
When last volume variation is less than expiration volume change threshold, the breathing pattern that the indicating unit exports next breathing detection stage draws
Lead signal；The expiration volume change threshold is 0.025 liter/second.
8. pulmonary function test (pft) method according to claim 5, which is characterized in that the breathing pattern guidance signal is complete
Air-breathing guides signal, the step S4 are as follows:
S41, changed according to air-breathing end volume when respiration parameter calculating complete air-breathing；
S42, when the air-breathing end volume variation reach aspirated volume change threshold when, return to the step S2；When the air-breathing
When last volume variation is less than aspirated volume change threshold, the breathing pattern that the indicating unit exports next breathing detection stage draws
Lead signal；The aspirated volume change threshold is 0.025 liter/second.
9. pulmonary function test (pft) method according to claim 5, which is characterized in that the breathing pattern guidance signal is firmly
It exhales and guides signal, the step S4 are as follows:
S41, expiratory duration is calculated according to respiration parameter；
S42, when the expiratory duration be less than expiratory duration threshold value when, return to the step S2；It is exhaled when the expiratory duration reaches
When gas time threshold, the indicating unit exports the breathing pattern guidance signal in next breathing detection stage；Work as subject age
When no more than 10 years old, the expiratory duration threshold value is 3 seconds, and when subject age is more than 10 years old, the expiratory duration threshold value is 6
Second.
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