BIOPAC® Systems, Inc. Logo

Compliance and Resistance Analysis

The AcqKnowledge® Compliance and Resistance analysis is part of a suite of three automated respiration routines. The other two are Pulmonary Air Flow Analysis and Full Body Plethysmograph Penh. Each routine provides breath-by-breath analysis, event marking and exporting of the values to excel.

Compliance and Resistance

This analysis requires an air flow signal and a pressure signal. The analysis will extract compliance and resistance values along with many common pulmonary values. Pulmonary compliance is calculated using the isovolumetric method. A user specified percentage of the tidal volume is located on both sides of the tidal volume signal. Pulmonary resistance is defined as the difference in pressure divided by flow at these two points.

See More...

Details

This is one of many ADVANCED FEATURES for the selected Application. Scroll down for hardware options.

Dynamic compliance is measured on a breath-by-breath basis by diving tidal volume by change in pressure between the exhale start and inhale start locations of the breath.

Name Abbrev. Description Units
Cycle Index of the breath in the data, beginning at 1. seconds
Time Starting time of the inhale of the breath.
Peak Inspiratory Flow PIF Maximum absolute flow occurring during the inhale portion of the breath. liters/sec
Peak Expiratory Flow PEF Maximum absolute flow occurring during the exhale portion of the breath. liters/sec
Tidal volume TV Total volume of air inhaled during the breath. liters
Minute volume MV Volume of air that would be inspired during a minute given the tidal volume and breathing rate of this breath. TV * BPM liters/
minute
Breaths per minute BPM Breathing rate. 60/TT BPM
Inspiration time IT Time interval between the start of inhale and the start of exhale. seconds
Exhalation time ET Time interval between the start of exhale and either:
– start of apnea (if apnea present)
– start of subsequent breath (if no apnea present)
seconds
Total breath time TT Time interval between the start of inhale and the start of inhale of the following breath. This is the sum of the inhalation time, exhalation time, and apnea time. seconds
Apnea time AT Time after end of exhalation where the airflow signal remained within the apnea threshold defined at the start of the analysis. seconds
Pulmonary resistance RES Change in pressure divided by change in flow at the isometric volume locations: delta p/ delta f mmHg/
(liters/
sec)
Pulmonary compliance Cdyn Tidal volume divided by the change in pressure between exhale and inhale locations in the breath: tv/delta p liters/
mmHg

Videos

Support

Application Notes

Knowledge Base

Hardware Packages   |   Compliance and Resistance Analysis

Hardware Bundles are complete solutions for the specified application. Choose your preferred platform and bundle, then click "Request Pricing" to request an estimate, add/remove items, or complete purchase. If you have questions about specific items, click through to the product web page for details and specifications, or contact your Local Sales contact.

Wired

Animal

Spotlight On
wireless EEG ECG telemetry for rodents

Epoch Wireless ECG Systems

Long-term wireless ECG system Wireless ECG implantable transmitters for mice or rats Additional transmitters available—just move the receiver tray to record from multiple home cages The Epoch ECG Transmitter amplifies and transmits high-fidelity ECG data. Implants are small enough to be implanted into mice as young as P18. To record, simply place the animal’s cage on top of the […]

View All
Latest News

New Citations | Psychophysiology, Chewing Study, Pulse Wave Velocity

Recent studies in Psychophysiology, EMG, ECG and PPG measurement utilizing BIOPAC software and hardware: Fight or Flight (Reflex Response Time) “Fight or flight” is a physiological response that occurs due to a perceived threat to survival. It can physiologically be observed through an increase in heart rate, respiratory rate, blood pressure, oxygen availability, and other mechanisms. In […]

New Citations | Heart Rate & Heart Rate Variability, Wingate Anaerobic Test, and Neuroscience of Music

HRV, EMG, and EEG studies using BIOPAC hardware and software include: DON’T STRESS Humans encounter various stressful situations everyday at work, home, and school. Such stress when experienced at high degrees and/or for a long duration of time could lead to cardiovascular diseases, cognitive dysfunctions, and psychological disorders. This study examined the validity of a novel physiological measurement […]

Read All
Request a Demonstration
Request a Demonstration