Using OMRON VP-1000 plus (Kyoto, Japan), an oscillometric device, blood pressure was automatically measured twice, five minutes apart in both ankles and brachia by certified technicians.19 Using the higher value of the right or left brachial systolic blood pressure as the denominator, the ABI, the ratio of ankle systolic blood pressure to brachial systolic blood pressure,20 (link) was calculated for right and left legs. The mean ABI of two measurements was recorded for each leg. In general, the lower value of right and left ABI was used for our analysis. Only when the higher ABI exceeded 1.3 and the lower ABI was normal (1.0-1.3), did we use the higher ABI value >1.3 for the analysis, to avoid missing potentially pathophysiological information from exceptionally high ABI indicating arterial non-compressibility.21 (link)-24 (link)
Vp 1000 plus
Manufactured by Omron
Sourced in Japan
The VP-1000 plus is a laboratory measurement device designed for precise analysis of samples. It features high-accuracy measurement capabilities to support a range of scientific applications.
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Lab products found in correlation
36 protocols using vp 1000 plus
1
Automated Ankle-Brachial Index Measurement
2
Comprehensive Vascular Assessment Protocol
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The semiautomatic vascular screening device OMRON VP‐1000 plus (Kyoto, Japan) was used to measure blood pressure simultaneously in the arms and ankles and arterial stiffness by PWV after participants were in the supine position for 5–10 min. Participant preparation included abstaining from smoking, vigorous exercise, and caffeinated beverages during the day of examination. PWV was estimated as the distance between 2 arterial recording sites divided by transit time. PWV was assessed between the heart and ankle (haPWV), femoral artery and ankle (faPWV), and brachial artery and ankle (baPWV) on the right and left sides. Femoral arterial pressure waveforms were acquired for 30 s by applanation tonometry sensor attached to the left common femoral artery (via elastic tape around the hip). Bilateral brachial and posterior‐tibial arterial pressure waveforms were detected over 10 s by extremity cuffs connected to a plethysmographic and an oscillometric pressure sensor wrapped on both arms and ankles. Trained technicians recorded PWV and blood pressures twice, and the results of the two readings were averaged.8
3
Automated Peripheral Artery Disease Diagnosis
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ABI values were measured using a validated automatic device (VP-1000 Plus; Omron Healthcare Co. Ltd., Kyoto, Japan). The brachial-ankle pulse wave velocity (baPWV) values were calculated as the ratio of the brachial-ankle path to the brachial-ankle pulse transmission time. Only the lower ABI value and higher baPWV value between the lower limbs of the same patient were recorded for analyses. %MAP, which was determined based on the ankle pulse volume waveforms, indicates the height of the mean arterial wave area divided by the peak amplitude. The reproducibility of ABI, %MAP, and baPWV has been shown in a previous study.28 (link) We collected only the data of the last ABI record in patients with repeated ABI assessments during the enrollment period. Abnormal ABI was defined as an ABI value ≤ 0.90 and abnormal %MAP was defined as a %MAP value ≥ 45%. Finally, high-risk PAD was defined as abnormal ABI, abnormal %MAP, or both.
4
Carotid-Femoral Pulse Wave Velocity Measurement
5
Comprehensive Assessment of Cardiac, Pulmonary, and Physical Function
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Quantitative measurements of cardiac structure and function were performed by echocardiography in ARIC at the time of late-life baseline (Visit 5), the design and methods of which have previously been described including reproducibility metrics82 (link). All studies were performed by a limited set of certified sonographers using a study-specific acquisition protocol and all qualitative measures were performed by trained analysts at the ARIC Echocardiography Reading Center (Boston, MA). Arterial stiffness was assessed by pulse wave velocity (PWV) using the automated waveform analyzer VP-1000 Plus (Omron, Kyoto, Japan) after participants were supine for 5–10 min83 (link). Repeatability of these measures have been previously reported84 (link). Lung function was assessed based on the following spirometric variables: FEV1, FVC and their ratio as previously described24 (link). Participants underwent bioelectric impedance (measured using the Tanita Body Composition Analyzer, TBF-300A) and percent body fat, fat mass and lean body mass were calculated85 . Grip strength, a measure of upper limb function, was assessed as the maximum handgrip isometric effort from two attempts using a handheld dynamometer22 (link).
6
Anthropometric and Metabolic Measures
7
Arterial Stiffness Measurement Protocol
8
Brachial-Ankle Pulse Wave Velocity Assessment
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Brachial-ankle pulse wave velocity (baPWV) measurements were obtained using VP-1000 PLUS (BP-203RPE III, Omron). Study subjects were stabilized for at least 5 minutes on supine position, and the arterial pulse waves in both forearm and ankle arteries were measured simultaneously using the oscillometric method. The baPWV was calculated automatically by time phase analysis, and the distance between the upper arm and ankle was estimated based on the height. The baPWV was obtained from the right and left measurements.
9
Arterial Stiffness Evaluation
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Arterial stiffness, compliance, and central blood pressure were measured in the supine position using a non-invasive device after at least, 10 min rest. Brachial-ankle pulse wave velocity (ba-PWV) was measured according to the manufacturer’s protocol using VP-1000 plus (Omron Healthcare CO., Ltd., Kyoto, Japan) with participants in the supine position before and immediately after the marathon race. In brief, electrocardiogram electrodes were placed on both wrists. Occlusion and cuffs were wrapped around both sides of the ankles and brachia. Volume waveforms for the brachium and ankle were stored, and the sampling time was 10 sec for automatic gain analysis.
10
Automated Measurement of Pulse Wave Velocity
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