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Oscillometry

Oscillometry is a non-invasive method for assessing respiratory mechanics, particularly airway resistance and reactance.
It involves the application of small-amplitude pressure or flow oscillations at the mouth during tidal breathing, allowing for the measurement of respiratory impedance.
This technique provides valuable insights into airway function and can be used to diagnose and monitor respiratory conditions such as asthma, chronic obstructive pulmonary disease (COPD), and interstitial lung diseases.
Oscillometry is an efficient, relatively effortless alternative to traditional lung function tests, making it a useful tool for patients who may have difficulty performing spirometry or other breathing maneuvers.
Reserchers can leverage this techology to optimize oscillometry protocols and deliver reliable, high-quallity results through the use of AI-driven analysis.

Most cited protocols related to «Oscillometry»

1
Arterial Stiffness Reference Values Database
The population retained for the present analysis is a subgroup of the ‘Reference Values for Arterial Stiffness' Collaboration database’, described previously.19 (link) Briefly, this database contains patients and subjects having had measurements of arterial stiffness (PWV or local stiffness measures obtained from ultrasound echotracking) and/or measurements of central pressure, together with a full medical history on record. These were provided by 13 centres distributed across eight European countries (see Appendix for the list of contributing centres). Inclusion criteria also included the availability of a full set of documentation regarding the protocol and measurement techniques used for the assessment of stiffness parameters.
Subjects were excluded from the present analysis if PWV measurement was unavailable, if they had an identified genetic cause of hypertension or secondary hypertension, or had overt CVD. Diabetic patients (either treated or untreated) and patients treated for hypertension or dyslipidaemia were also excluded.
Subject data included vital parameters, BPs, and the recording of any relevant CV risk factor, CVD, or treatment at the time of measurement. Ethnicity was not reported in all data sets; however, subjects other than Caucasians were a small minority. Subjects were further categorized (Figure 1) according to the presence of additional CV risk factors (gender, dyslipidaemia, or current smoking). Dyslipidaemia was defined as total cholesterol >5.0 mmol/L, HDL cholesterol <1.0 mmol/L for men and <1.2 mmol/L for women, LDL cholesterol >3.0 mmol/L, or triglycerides >1.7 mmol/L. Blood pressure was measured according to the procedures of each participating centre. The values of BP are those obtained during the measurement of PWV. Methods for BP measurement may vary with time and within centres. Automatic oscillometric devices were used in more than 80% of subjects. Mean BP (MBP) was calculated from systolic BP (SBP) and diastolic BP (DBP) as MBP = DBP + 0.4(SBP − DBP). Threshold values for CV risk factors were chosen according to the 2007 ESC/ESH hypertension guidelines.3 (link)

Flowchart describing the selection and categorization of subjects from the reference value database for the present analysis. PWV, pulse wave velocity; CVD, cardiovascular disease; BP, blood pressure.

Determinants of pulse wave velocity in healthy people and in the presence of cardiovascular risk factors: ‘establishing normal and reference values’. (2010). European Heart Journal, 31(19), 2338-2350.
Publication 2010
Arterial Stiffness Blood Pressure Cardiovascular Diseases Caucasoid Races Cholesterol Cholesterol, beta-Lipoprotein Dyslipidemias Ethnicity Europeans Gender High Blood Pressures High Density Lipoprotein Cholesterol Medical Devices Minority Groups Oscillometry Patients Pressure Pressure, Diastolic Systolic Pressure Triglycerides Ultrasonography Woman
2
Maternal Factors and Pregnancy Outcomes
We obtained information on maternal age, ethnicity, educational level, parity, folic acid supplementation, and smoking by questionnaire at enrolment.11 (link) Maternal height and weight were measured and body mass index was calculated at enrolment. We measured maternal blood pressure with the validated oscillometric sphygmomanometer (OMRON Healthcare Europe B V, Hoofddorp, Netherlands) and documented the mean value of two blood pressure readings.23 (link)
Jaddoe V.W., de Jonge L.L., Hofman A., Franco O.H., Steegers E.A, & Gaillard R. (2014). First trimester fetal growth restriction and cardiovascular risk factors in school age children: population based cohort study. The BMJ, 348, g14.
Publication 2014
Blood Pressure Ethnicity Folic Acid Index, Body Mass Oscillometry Sphygmomanometers
3
Comparative Analysis of Blood Pressure Measurement Methods
Several BP measurement methods are now available. The main methods include catheterization, auscultation, oscillometry, volume clamping, and tonometry.
Catheterization is the gold standard method [6 (link)]. This method measures instantaneous BP by placing a strain gauge in fluid contact with blood at any arterial site (e.g., radial artery, aorta). However, the method is invasive.
Auscultation, oscillometry, and volume clamping are noninvasive methods. These methods employ an inflatable cuff.
Auscultation is the standard clinical method [7 (link)]. This method measures systolic and diastolic BP by occluding an artery with a cuff and detecting the Korotkoff sounds using a stethoscope and manometer during cuff deflation. The first sound indicates the initiation of turbulent flow and thus systolic BP, while the fifth sound is silent and indicates the renewal of laminar flow and thus diastolic BP.
Oscillometry is the most popular non-invasive, automatic method [8 (link), 9 (link)]. This method measures mean, diastolic, and systolic BP by also using a cuff but with a pressure sensor inside it. The measured cuff pressure not only rises and falls with cuff inflation and deflation but also shows tiny oscillations indicating the pulsatile blood volume in the artery. The amplitude of these oscillations varies with the applied cuff pressure, as the arterial elasticity is nonlinear. The BP values are estimated from the varying oscillation amplitudes using the empirical fixed-ratios principle. When evaluated against auscultation using an Association for the Advancement of Medical Instrumentation (AAMI) protocol, some oscillometric devices achieve BP errors within the AAMI limits of 5 mmHg bias and 8 mmHg precision [10 ]. However, oscillometry is unreliable in subjects with certain conditions such as atrial fibrillation, stiff arteries, and pre-eclampsia [11 ].
Volume clamping is a non-invasive, automatic method used in research [12 (link), 13 ]. This method measures instantaneous (finger) BP by using a cuff and a photoplethysmography (PPG) sensor to measure the blood volume (see Section V.A). The blood volume at zero transmural pressure is estimated via oscillometry. The cuff pressure is then continually varied to maintain this blood volume throughout the cardiac cycle via a fast servo-control system. The applied cuff pressure may thus equal BP. Volume clamping devices also achieve BP errors within AAMI limits when evaluated against auscultation and near AAMI limits when evaluated against radial artery catheterization [14 (link)].
However, cuff use has several drawbacks. In particular, cuffs are cumbersome and time consuming to use, disruptive during ambulatory monitoring, especially while sleeping, and do not readily extend to low resources settings.
Tonometry is another non-invasive method used in research that, in theory, does not require an inflatable cuff [15 , 16 ]. This method measures instantaneous BP by pressing a manometer-tipped probe on an artery. The probe must flatten or applanate the artery so that its wall tension is perpendicular to the probe. However, manual and automatic applanation have proven difficult. As a result, in practice, the measured waveform has been routinely calibrated with cuff BP whenever a BP change is anticipated [17 (link)].
In sum, the existing BP measurement methods are invasive, manual, or require a cuff. So, none are suitable for ubiquitous (i.e., ultra-convenient, unobtrusive, and low cost) monitoring.
Mukkamala R., Hahn J.O., Inan O.T., Mestha L.K., Kim C.S., Töreyin H, & Kyal S. (2015). Towards Ubiquitous Blood Pressure Monitoring via Pulse Transit Time: Theory and Practice. IEEE transactions on bio-medical engineering, 62(8), 1879-1901.
Publication 2015
Aorta Arteries Arteries, Radial Atrial Fibrillation Auscultation BLOOD Blood Pressure Blood Volume Cardiac Volume Catheterization Clinical Protocols Diastole Elasticity Fingers Gold Manometry Medical Devices Oscillometry Photoplethysmography Pre-Eclampsia Pressure Pressure, Diastolic Sound Stethoscopes Strains Systole Systolic Pressure Tonometry
4
Stress Test Protocol for Cardiac Imaging
After a 30-minute rest period in a quiet room, mental stress testing was performed by trained staff. Patients were required to listen to a scripted message that provided instructions for the mental stress task. They were asked to imagine a stressful situation, using a scenario in which a close relative had been mistreated in a nursing home. They then were asked to prepare a statement for 2 minutes and then present it over a 3-minute period in front of a video camera and an audience wearing white coats. Patients were told that their speech would be evaluated for content and duration. Blood pressure and heart rate were recorded at 5-minute intervals during the resting phase and at 1-minute intervals during the mental stress period using an automatic oscillometric device. At 60 seconds into the mental stress task, a regular dose of 99mTc-sestamibi (30–40 mCi based on weight) was injected intravenously and images were acquired 40 minutes to 1 hour later.
Hammadah M., Al Mheid I., Wilmot K., Ramadan R., Shah A.J., Sun Y., Pearce B., Garcia E.V., Kutner M., Bremner J.D., Esteves F., Raggi P., Sheps D.S., Vaccarino V, & Quyyumi A.A. (2017). The Mental Stress Ischemia Prognosis Study (MIPS): Objectives, Study Design, and Prevalence of Inducible Ischemia. Psychosomatic medicine, 79(3), 311-317.
Publication 2016
Auditory Perception Blood Pressure Forehead Medical Devices Neoplasm Metastasis Oscillometry Patients Rate, Heart Speech Stress, Psychological Technetium Tc 99m Sestamibi
5
Novel Oscillometric Method for Aortic Pressure
The ARCSolver method aims to be a novel method for the determination of the aSBP and AIx based on oscillometric blood pressure measurement with a common cuff. The method16 has been developed by the Austrian Institute of Technology, Vienna, Austria. The method uses the pulse waves assessed at A. brachialis. The recordings are carried out at diastolic pressure level for approximately 10 s using a conventional blood pressure cuff for adults available in two sizes (24–34 and 32–42 cm) and a high fidelity pressure sensor (MPX5050, Freescale Inc., Tempe, AZ, USA). The sensor is connected to a 12 bit A/D converter by means of an active analogue band bass filter (0<>25 Hz). After digitalization, the signal processing is performed using a three level algorithm. In a first step, the single pressure waves are verified for their plausibility by testing the position of minima and the corresponding wavelengths. During the second stage, all single pressure waves are compared with each other to recognize artifacts. Thereafter, an aortic pulse wave is generated by the means of a generalized transfer function. The idea behind a transfer function is the modification of a certain frequency range within the acquired pulse signal to get the aortic pressure wave. Modulus and phase characteristics of the ARCSolver transfer function are illustrated in Figure 1a. Compared with data published by Karamanoglu et al.17 (link) similar parameters have been obtained.18 (link) The first positive zero crossing of the fourth-order time derivative of the generated aortic pulse wave represents the desired inflection point.19 (link) Finally, the coherence of the measured parameters is verified. Therefore, the inflection point of each single pulse wave is compared with the mean inflection point. The determination of aSBP and AIx is carried out in the same way as in SphygmoCor (see Figure 1b).
Wassertheurer S., Kropf J., Weber T., van der Giet M., Baulmann J., Ammer M., Hametner B., Mayer C.C., Eber B, & Magometschnigg D. (2010). A new oscillometric method for pulse wave analysis: comparison with a common tonometric method. Journal of Human Hypertension, 24(8), 498-504.
Publication 2010
Adult Aorta Aortic Pressure Bass Blood Pressure Determination, Blood Pressure Oscillometry Pressure Pressure, Diastolic Pulse Rate Tempeh

Most recents protocols related to «Oscillometry»

1
Comprehensive Vascular Profiling for PAD Diagnosis
Four-limb blood pressure and ABI measurement was performed by trained technicians using a non-invasive vascular profiling system (Omron VP-1000 vascular profiling system, Japan) [3 (link)]. This system ensured accurate and reliable ABI measurement using advanced oscillometric technology. Simultaneous blood pressure measurement at all four limbs was included, using a dual chamber cuff system and a proprietary algorithm. Measurement was performed after a 10-min rest in the supine position with the upper body as flat as possible. The device simultaneously and automatically measured the blood pressures twice, and then we calculated the means to get final blood pressure values. Bilateral ankle and brachial artery pressures, and bilateral ABI were supplied after measurement. ACC/AHA guidelines recommend ABI ≤ 0.90 as the criterion for the diagnosis of lower extremity PAD [8 (link)]. Meanwhile, IABPD ≥ 15 mmHg was considered as the potential abnormalities of upper extremity arteries according to literatures in this study [9 (link), 10 (link)].
Wang Y., Guo X., Zhang Y., Zhang R, & Li J. (2023). Different associations of general and abdominal obesity with upper and lower extremity artery disease among a community population in China. Nutrition & Metabolism, 20, 14.
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Publication 2023
Ankle Arteries Blood Pressure Brachial Artery Congenital Abnormality Determination, Blood Pressure Diagnosis Hemic System Human Body Lower Extremity Medical Devices Oscillometry Upper Extremity
2
Comprehensive Health Assessments in Community-Based Settings
Biometric assessments were performed at baseline, 12 weeks, and 24 weeks. Data from participants included self-reported measures (sociodemographic and self-reported health history), survey data collected via REDCap, including the CMS Accountable Health Communities Health-Related Social Needs Screening Tool either onsite at the Recreation and Parks locations or at participant homes [30 (link)]. Biometric measurements, including blood pressure (mmHg), fasting cholesterol (mg/dl), fasting glucose (mg/dl), weight (lbs), and BMI were collected onsite at the Recreation and Parks locations and recorded in REDCap at each time point. The sociodemographic data included age, education, race, ethnicity, employment status, insurance status, and annual income. The self-reported health history included hypertension, diabetes, hyperlipidemia, and smoking status (I have never smoked, I currently smoke, I quit smoking > 1 year ago or I quit smoking ≤ 1 year ago), as well as medications for the aforementioned chronic conditions.
The survey data included the Diet History Questionnaire (DHQ) III [40 ]. The DHQ-III nutrient and food group database is based on a compilation of national 24-hour dietary recall data from the National Health and Nutrition Examination Surveys (NHANES). Prior research has shown the questionnaire is valid and reliable [41 (link)–43 (link)]. In the current evaluation, we calculated physical activity minutes per week using the validated moderate physical activity 2-question physical activity questionnaire within the CMS screening tool [44 (link)].
Biometric screenings were performed by trained healthcare staff, including nurses and physicians. Blood pressure was checked via an automated oscillometric sphygmomanometer (Omron 5 series) with two measurements performed after the participants were seated for 5 minutes and averaged. Weight was measured using a zeroed and calibrated Omron Body Composition Monitor and Scale (Model: HBF-514C). Height was measured via a tape measurer. BMI was calculated by multiplying weight (lbs) by 703 and then dividing by height squared (inch2). Blood total cholesterol and glucose were measured in the fasting state using the Cardio Check Silver® (Polymer Technology, Inc., Heath, OH, USA) device. All participants received individual results at baseline, 12, and 24 weeks.
Joseph J.J., Gray DM I.I., Williams A., Zhao S., McKoy A., Odei J.B., Brock G., Lavender D., Walker D.M., Nawaz S., Baker C., Hoseus J., Price T., Gregory J, & Nolan T.S. (2023). Addressing non-medical health-related social needs through a community-based lifestyle intervention during the COVID-19 pandemic: The Black Impact program. PLOS ONE, 18(3), e0282103.
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Publication 2023
BLOOD Blood Pressure Body Composition Cholesterol Chronic Condition Diabetes Mellitus Diet Ethnicity Food Glucose High Blood Pressures Hyperlipidemia Medical Devices Mental Recall Nurses Nutrients Oscillometry Pharmaceutical Preparations Physicians Polymers Screening Silver Smoke Sphygmomanometers
3
Brachial and Central Blood Pressure Measurements
Office brachial BP measurement was performed using a mercury sphygmomanometer and a standard‐sized cuff (13 cm × 50 cm), after the person had been seated for at least 5 min.8 Brachial systolic and diastolic BP values represented the average of at least two consecutive measurements, separated by at least 5 min.
Office central BP measurement was performed using the carotid tonometry.9 Right carotid artery pressure waveforms were registered noninvasively by applanation tonometry using a high‐fidelity SPC‐301 micromanometer (Millar Instrument, Inc., Houston, Texas, USA).10, 11 Five to ten consecutive carotid pressure waveforms were ensemble averaged to one waveform that was then calibrated to brachial mean and diastolic BPs.11 The inter‐ and intra‐observer variabilities of the estimation of central systolic BP by carotid tonometry were .6% and .9%, respectively.8Ambulatory daytime brachial BP readings were calculated from multiple measurements of the oscillometric ABPM recorders (Model 90207; SpaceLabs Inc., Redmond, Washington, USA).7 Recorders were programmed to measure brachial BP at 20‐min intervals during the daytime (from 7 a.m. to 10 p.m.) and at 60‐min intervals during the nighttime (from 10 p.m. to 7 a.m.).8 The 24‐h BP readings were not edited manually, and only persons whose daytime ABPM records contained ≥ 70% of the total possible readings were included in the present analysis.
For the present study, office brachial hypertension was defined in retrospect as office brachial systolic BP ≥130 mmHg or diastolic BP ≥ 80 mmHg.1 Office central hypertension was defined as office central systolic BP ≥130 mmHg or diastolic BP ≥ 80 mmHg. Ambulatory daytime brachial hypertension was defined as average brachial systolic BP ≥ 130 mmHg or average diastolic BP ≥ 80 mmHg during daytime.
Chuang S., Cheng H., Chang W., Yeh W., Huang C, & Chen C. (2023). 130/80 mmHg as a unifying hypertension threshold for office brachial, office central, and ambulatory daytime brachial blood pressure. The Journal of Clinical Hypertension, 25(3), 266-274.
Publication 2023
Carotid Arteries Common Carotid Artery Diastole High Blood Pressures Mercury Oscillometry Pressure Pressure, Diastolic Sphygmomanometers Systole Systolic Pressure Tonometry
4
Measurement of Arterial Stiffness Indices
BaPWV and cfPWV were measured by trained technicians using automated measuring equipment and following standardized protocols. BaPWV was measured using an automatic waveform analyzer (BP‐203RPE III, Colin‐Omron, Co., Ltd., Tokyo, Japan) based on a standard protocol. The subjects were in the supine position, and 4 cuffs were wrapped around the bilateral brachia and ankles and then connected to a plethysmographic sensor and oscillometric pressure sensor. The pulse waveform was recorded after resting for at least 5 min. BaPWV was measured on both the left and right sides, and the highest measured value was used for analysis.
The cfPWV was measured using an automated system (Pulse Pen, DiaTecne, Milan, Italy) with the patient in the supine position for 10 min. The right carotid and femoral waveforms were acquired simultaneously with two pressure‐sensitive transducers, and the transit time of the pulse was calculated using the system software. The distance between the two arterial sites was measured on the body using a tape measure, and the PWV values were calculated as distance divided by time (m/s).
Yi T., Gao L., Fan F., Jiang Y., Jia J., Zhang Y., Li J, & Huo Y. (2023). Association between pulse wave velocity and the 10‐year risk of atherosclerotic cardiovascular disease in the Chinese population: A community‐based study. The Journal of Clinical Hypertension, 25(3), 278-285.
Publication 2023
Ankle Arm, Upper Arteries Carotid Arteries Femur Oscillometry Patients Pressure Pulse Rate Transducers, Pressure
5
Blood Pressure and Heart Rate Assessment
Blood pressure measurements will be taken using a validated oscillometer Omron Healthcare Oscillometer [64 ]. The participants will remain at rest for five minutes before the assessment and will be lying in a supine position with the legs and arms completed. They will place their left or right arm, depending on the affected breast, straight, so that the cuff is at the level of the heart, 2 cm from the elbow. In addition, any clothing that may alter the results will be removed. Once in this position, the air tube of the cuff will be placed on the front of the arm aligned with the middle finger and with the blue date on the cuff. Systolic and diastolic blood pressure data will be taken; and, subsequently, the mean arterial pressure will be calculated by the following formula [(systolic blood pressure + (2 × diastolic blood pressure))/3] [65 ].
The resting heart rate will be measured for 5 min. The participants will lie relaxed in the supine position on a stretcher isolated from the floor. This data will be essential for the correct prescription of the intensity.
Lavín-Pérez A.M., Collado-Mateo D., Hinojo González C., de Juan Ferré A., Ruisánchez Villar C., Mayo X, & Jiménez A. (2023). High-intensity exercise prescription guided by heart rate variability in breast cancer patients: a study protocol for a randomized controlled trial. BMC Sports Science, Medicine and Rehabilitation, 15, 28.
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Publication 2023
Breast Determination, Blood Pressure Fingers Heart Joints, Elbow Leg Oscillometry Patient Holding Stretchers Pressure, Diastolic Rate, Heart Systole Systolic Pressure

Top products related to «Oscillometry»

1
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The HEM-705CP is a digital blood pressure monitor designed for professional use in medical settings. It is capable of measuring systolic and diastolic blood pressure as well as pulse rate. The device features a large LCD display and is powered by either batteries or an AC adapter.
2
Hem 907xl by Omron
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The HEM-907XL is an automated blood pressure monitor designed for professional use in clinical settings. It is capable of measuring systolic and diastolic blood pressure, as well as pulse rate. The device features a large, easy-to-read display and is powered by AC adapter.
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The VaSera VS-1000 is a diagnostic device designed for vascular function assessment. It is capable of measuring various cardiovascular parameters, including ankle-brachial index and pulse wave velocity.
5
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The Dinamap is a versatile patient monitoring device used in healthcare settings. It is designed to automatically measure and record a patient's vital signs, including blood pressure, pulse rate, and temperature. The Dinamap provides accurate and reliable measurements to support clinical decision-making.
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More about "Oscillometry"

Oscillometry: A Non-Invasive Approach to Respiratory Mechanics Assessment

Oscillometry, also known as Impulse Oscillometry (IOS) or Forced Oscillation Technique (FOT), is a powerful non-invasive method for evaluating respiratory mechanics.
This technique involves the application of small-amplitude pressure or flow oscillations at the mouth during tidal breathing, allowing for the measurement of respiratory impedance.
This provides valuable insights into airway function, making it a valuable tool for diagnosing and monitoring respiratory conditions such as asthma, chronic obstructive pulmonary disease (COPD), and interstitial lung diseases.
Oscillometry offers an efficient and relatively effortless alternative to traditional lung function tests, such as spirometry, making it particularly useful for patients who may have difficulty performing complex breathing maneuvers.
Researchers and clinicians can leverage this technology to optimize oscillometry protocols and deliver reliable, high-quality results through the use of AI-driven analysis.
Devices like the HEM-705CP, HEM-907XL, HEM-907, VaSera VS-1000, Dinamap, VP-1000 plus, HEM-9000AI, SphygmoCor, and BP-203RPE III can be used to perform oscillometry measurements and analyze the data.
PubCompare.ai is a powerful tool that can help researchers streamline their oscillometry workflow and identify the most reproducible and accurate methods.
By leveraging artificial intelligence to locate and analyze oscillometry protocols from literature, pre-prints, and patents, PubCompare.ai can assist researchers in optimizing their research and delivering reliable, high-quality results.
OtherTerms: Impulse Oscillometry (IOS), Forced Oscillation Technique (FOT), respiratory impedance, airway resistance, airway reactance, asthma, COPD, interstitial lung diseases, spirometry, lung function tests, AI-driven analysis, HEM-705CP, HEM-907XL, HEM-907, VaSera VS-1000, Dinamap, VP-1000 plus, HEM-9000AI, SphygmoCor, BP-203RPE III, PubCompare.ai.