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医療機器修理業

 投稿者:アールメディカルデバイス  投稿日:2016年 1月 4日(月)07時26分56秒
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  当事業所では、以下の体制で医療機器修理業の業務を行っております。

1.医療機器修理業
許可番号:11BS200256

有効期間:平成27年8月22日
平成32年8月21日

2.業務体制について

医療機器修理業 責任技術者 : 仲本 興人
他、臨床工学技士有資格者

3.業務内容
○保守点検・修理(引き取り・出張)
○オーバーホール
○医療機器設置
○副作用・不具合等の安全性情報の収集・整理
 業務の補助
○故障内容の解析報告業務
○上記及び関連業務の委託請負。

医療機器修理業務各内容の詳細はお問い合わせ下さい。
(費用例:保守点検業務)
ポータブル人工呼吸器   @5,000円~
ハイエンド人工呼吸器  @45,000円~
4.業務の範囲(許可を受けた修理区分)
当事業所では、医療機器全修理区分の対応が可能です。
修理可能な医療機器の区分と範囲
※1特定保守管理医療機器
(該当) 特定保守管理医療機器
以外(非該当)
第一区分:
画像診断システム関連 第一区分:
画像診断システム関連
第二区分:
生体現象計測・監視システム関連 第二区分:
生体現象計測・監視システム関連
第三区分:治療用・施設用機器関連 第三区分:治療用・施設用機器関連
第四区分:
人工臓器関連 第四区分:
人工臓器関連
第五区分:
光学機器関連 第五区分:
光学機器関連
第六区分:
理学療法用機器関連 第六区分:
理学療法用機器関連
第七区分:
歯科用機器関連 第七区分:
歯科用機器関連
第八区分:
検体検査用機器関連 第八区分:
検体検査用機器関連
第九区分:
指定医療機器無し
第九区分:
鋼製器具・家庭用医療機器関連

用語説明
※1特定保守管理医療機器
保守点検、修理その他の管理に専門的な知識及び技能を必要とすることからその適正な管理が行わなければ疾病の診断、治療または予防に重大な影響を与えるおそれがあるものとして、厚生労働大臣が薬事・食品衛生審議会の意見を聴いて指定するものをいう。

※2設置管理医療機器
設置にあたって組み立てが必要な特定保守管理医療機器であって、保健衛生上の危害の発生を防止するために、当該組み立てに係る管理が必要なものとして厚生労働大臣が指定する医療機器。
修理区分ごとの医療機器の品目数(2,288)
修理区分 特定保守管理医療機器 ※2設置管理医療機器
該当 非該当
第一区分 228 36 167
第二区分 267 62 0
第三区分 165 174 10
第四区分 84 76 1
第五区分 240 178 32
第六区分 76 13 1
第七区分 61 111 17
第八区分 82 25 15
第九区分 0 167 0
計 1,203 842 243
 (2015年6月現在)

http://www.din.or.jp/~meditekn/medi_hp/rmedical/

 
 

アルテリオグラフの長所

 投稿者:Arterial Stiffness  投稿日:2014年 7月 8日(火)14時20分17秒
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  Gordons Chemists Launch a new Cardiovascular Screening Clinic
23 May 2014 12:19:30

CardioHealth NI ? Give your arteries an MOT!

Gordons Chemists are pleased to offer a new cardiovascular screening clinic.
Statistics indicate that around 60% of the time in heart attack cases, a standard cholesterol or blood pressure test won’t have revealed anything out of the ordinary. Guidelines (published in 2007) from the European Society of Hypertension recommend measuring arterial stiffness in patients with arterial hypertension (high blood pressure).
Gordons Chemists are pleased to offer across Northern Ireland a cardiovascular screening clinic, using a state-of-the-art arteriograph. CardioHealth NI is the first and only company in Northern Ireland that uses an arteriograph; a session with CardioHealth NI at one of our cardiovascular screening clinics is priced at only £50.
A cardiovascular screening using an arteriograph reveals much more than a typical blood pressure or cholesterol test will. By offering this cardiovascular screening clinic, we allow the patient to have a better understanding of the health of their arteries. As such they can make the decision to take control of their cardiovascular health ? hopefully reducing the incidence or severity of heart attack, stroke or high blood pressure.
In addition to identifying underlying health problems, the screening includes recommendations on diet and natural health solutions. A detailed report allows the patient to consult with their GP or medical professional in order to seek further advice and treatment, based on the findings of the screening.
The cardiovascular screening clinic is suitable for anyone aged 16 years and over, or anyone with a family history of heart disease, kidney disease or diabetes. It’s also suitable for anyone who drinks alcohol or smokes, is overweight, or participates in (or is returning to) a sport.

About the Arteriograph
An arteriograph is a sophisticated instrument used for detecting changes to the artery walls. The arteriograph uses a cuff that contains special pressure sensors.
These pressure sensors are designed to detect the Pulse Wave (pressure wave) that leaves the heart as it contracts. When the pulse wave reaches the end of the arterial system, it is then reflected back towards the heart. Three key measurements are taken from this pulse wave.
An arteriograph reveals damage to the heart and arteries that a standard blood pressure or cholesterol test will not. It measures parameters that indicate if the patient might at risk of heart attack or stroke, including:
Central Systolic Blood Pressure
This in effect measures blood pressure, at the heart. Studies indicate that this is of greater value than measuring blood pressure on the arm.
Brachial Augmentation
This reveals early damage to, and clogging up of, your smaller arteries. When arterial clogging begins, it occurs firstly in the small arteries of the hands and feet. This can be measured and it indicates the degree of clogging and the damage to the inner lining of your smaller arteries.
Pulse Wave Velocity
The speed of the pressure wave described above is measured over a given distance. An increased speed indicates a clogging of the arteries. There is a direct correlation between this, and an increased risk of heart attack/stroke. The reading is often found to be abnormal in patients with kidney disease, diabetes, sufferers of rheumatoid arthritis, and smokers.
The Arteriograph is a new, easy-to-use, and time-effective method for assessing arterial stiffness. Prior to the arteriograph, there were (and still are) two invasive methods used within a hospital setting: the tonometric and piezo-electronic systems (SphygmoCor and Complior).
An arteriograph is not intended as a replacement for these. Instead, the device is intended for use as a quick, affordable and non-invasive means of diagnosing an underlying condition that the patient may not be aware of. Clinical trials (see below for details) reveal that an arteriograph gives accurate results (which are comparable to the two systems mentioned).
The main advantage of using an arteriograph is that it offers a quick and affordable assessment, using only the upper arm.
Other methods involve a detailed examination and take time to complete. Typically, these (due to the time and expense involved in completing a screening) aren’t readily available at the request of a patient.
CardioHealth NI’s cardiovascular screening clinics offer the patient the opportunity to have a detailed and accurate assessment of their cardiovascular system completed ? at a relatively low price, in a location close to them, in just half an hour.
Upcoming clinic detail can be obtained by emailing: info@gordonsdirect.com

Clinical Evidence
Publications on the validation of the Arteriograph device:
? Baulmann, J. et al.
? "A new oscillometric method for assessment of arterial stiffness: comparison with tonometric and piezo-electronic methods"
? J Hypertens 2008, 26:523-528
? http://www.arteriograph.hu/downloads/pdf/Baulmann%20validation-J-Hypert%2708March-Cover.pdf

? Jatoi, N.A., et al.
? “Assessment of arterial stiffness in hypertension: comparison of oscillometric (Arteriograph), piezoelectronic (Complior) and tonometric (SphygmoCor) techniques”
? J Hypertens 2009, 27:2186?2191
? http://www.arteriograph.hu/downloads/pdf/Mahmud-Feely-Compl-Sphygm-Art-JHypert-Oct%2709.pdf

? Boutouyrie P, Revera M and Parati G.
? “Obtaining arterial stiffness indices from simple arm cuff measurements: the holy grail?”
? J Hypertension 2009; 27:2159-2161
? http://www.arteriograph.hu/downloads/pdf/Boutouyrie-Editorial-JHypert-Oct%2709.pdf

? Rajzer MW, Wojciechowska W, Klocek M, Palka I, Brzozowska-Kiszka M, Kawecka-Jaszcz K.
? “Comparison of aortic pulse wave velocity measured by three techniques: Complior, SphygmoCor and Arteriograph.”
? J Hypertens 2008; 26:2001-7
? http://www.arteriograph.hu/downloads/pdf/Marek%20Rajzer%20comp%20study%20with%20ARG.pdf

? Horváth, G.I. et al
? “Invasive validation of a new oscillometric device (Arteriograph) for measuring augmentation index, central blood pressure and aortic pulse wave velocity”
? J Hypertens 2010, 28:2068?2075
? http://www.arteriograph.hu/downloads/pdf/Invasive%20validation%20JoH%202010%2028.pdf

? Parati G, Buyzere de M
? “Evaluating aortic stiffness through an arm cuff oscillometric device: is validation against invasive measurements enough?"
? Journal of Hypertension 2010, 28:2003?2006
? http://www.arteriograph.hu/downloads/pdf/Parati%20Editorial%20Comment%20on%20invasive%20validation.pdf



http://medicallabtech.digi2.jp/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)07時09分26秒
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薬事認可有り、小型、携帯、ワイヤレス、立居計測可

、 A new oscillometric method for assessment of arterial
stiffness: comparison with tonometric and piezo-electronic
methods
Johannes Baulmanna, Ulrich Schillingsb, Susanna Rickertb, Sakir Uenb,
Rainer Du¨ singb, Attila Czirakic, Miklos Illyesc and Thomas Mengdenb
Introduction Pulse wave velocity (PWV) and augmentation
index (AIx) are parameters of arterial stiffness and wave
reflection. PWV and AIx are strong indicators for
cardiovascular risk and are used increasingly in clinical
practice. Previous systems for assessment of PWV and AIx
are investigator dependent and time consuming. The aim of
this study was to validate the new oscillometric method
(Arteriograph) for determining PWV and AIx by comparing it
to two clinically validated, broadly accepted tonometric and
piezo-electronic systems (SphygmoCor and Complior).
Design and method PWV and AIx were measured up to five
times in 51 patients with the SphygmoCor, Complior and
Arteriograph. In 35 patients, the measurements were
repeated after 1 week in a second session using the
same protocol.
Results The correlations of the PWV as assessed with the
Arteriograph with the values obtained using the
SphygmoCor (rU0.67, P < 0.001) and the Complior
(rU0.69, P < 0.001) were highly significant. Variability and
reproducibility for PWV were best for the Arteriograph,

http://homepage2.nifty.com/medicalteknika/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)06時59分43秒
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薬事認可有り、小型、携帯、ワイヤレス、立居計測可、

Assessment of arterial stiffness in hypertension: comparison of oscillometric (Arteriograph), piezoelectronic (Complior) and tonometric (SphygmoCor) techniques.
Noor A Jatoi, Azra Mahmud, Kathleen Bennett, John Feely
Department of Pharmacology and Therapeutics, Trinity College Centre for Health Sciences and Hypertension Clinic, St. James's Hospital, Dublin, Ireland.
Journal of hypertension (impact factor: 4.02). 10/2009; 27(11):2186-91. DOI:10.1097/HJH.0b013e32833057e8
Source: PubMed
ABSTRACT Arterial stiffness, measured as aortic pulse wave velocity (PWV), and wave reflection, measured as augmentation index (AIx), are independent predictors for total and cardiovascular morbidity and mortality. The aim of this study was to compare a new device

http://homepage2.nifty.com/medicalteknika/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)06時58分4秒
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薬事認可有り、小型、携帯、ワイヤレス、立居計測可、

Clin Cardiol. 2012 Jan;35(1):26-31. doi: 10.1002/clc.20999. Epub 2011 Nov 14.
Comparison of aortic and carotid arterial stiffness parameters in patients with verified coronary artery disease.
Gaszner B, Lenkey Z, Illyés M, Sárszegi Z, Horváth IG, Magyari B, Molnár F, Kónyi A, Cziráki A.
Source
Heart Institute, Faculty of Medicine, University of Pécs, Hungary.
Abstract
BACKGROUND:
Arterial stiffness parameters are commonly used to determine the development of atherosclerotic disease. The independent predictive value of aortic stiffness has been demonstrated for coronary events.
HYPOTHESIS:
The aim of our study was to compare regional and local arterial functional parameters measured by 2 different noninvasive methods in patients with verified coronary artery disease (CAD). We also compared and contrasted these stiffness parameters to the coronary SYNTAX score in patients who had undergone coronary angiography.
METHODS:
In this study, 125 CAD patients were involved, and similar noninvasive measurements were performed on 125 healthy subjects. The regional velocity of the aortic pulse wave (PWVao) was measured by a novel oscillometric device, and the common carotid artery was studied by a Doppler echo-tracking system to determine the local carotid pulse wave velocity (PWVcar). The augmentation index (AIx), which varies proportionately with the resistance of the small arteries, was recorded simultaneously.
RESULTS:
In the CAD group, the PWVao and aortic augmentation index (Alxao) values increased significantly (10.1 ± 2.3 m/sec and 34.2% ± 14.6%) compared to the control group (9.6 ± 1.5 m/sec and 30.9% ± 12%; P < 0.05). We observed similar significant increases in the local stiffness parameters (PWVcar and carotid augmentation index [Alxcar]) in patients with verified CAD. Further, we found a strong correlation for PWV and AIx values that were measured with the Arteriograph and those obtained using the echo-tracking method (r = 0.57, P < 0.001 for PWV; and r = 0.65, P < 0.001 for AIx values).
CONCLUSIONS:
Our results indicate that local and regional arterial stiffness parameters provide similar information on impaired arterial stiffening in patients with verified CAD.
© 2011 Wiley Periodicals, Inc.


http://homepage2.nifty.com/medicalteknika/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)06時56分16秒
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薬事認可有り、小型、携帯、ワイヤレス、立居計測可、

Assessment of arterial stiffness in hypertension: comparison of oscillometric (Arteriograph), piezoelectronic (Complior) and tonometric (SphygmoCor) techniques.
Abstract
BACKGROUND
Arterial stiffness, measured as aortic pulse wave velocity (PWV), and wave reflection, measured as augmentation index (AIx), are independent predictors for total and cardiovascular morbidity and mortality. The aim of this study was to compare a new device, based on oscillometric pressure curves (Arteriograph), which simultaneously measures PWV and AIx, with standard techniques for measuring PWV (Complior) and AIx (SphygmoCor) in untreated hypertensive patients.
METHODS
We compared PWV and AIx measured using the Arteriograph with corresponding Complior and SphygmoCor measurements in 254 untreated hypertensive patients, age 48 +/- 14 years (mean +/- SD, range 17-85 years).
RESULTS
Arteriograph PWV and AIx were closely related with Complior (r = 0.60, P < 0.001) and SphygmoCor (r = 0.89, P < 0.001), respectively. Using stepwise regression analysis, the independent determinants of Arteriograph PWV were age, mean arterial pressure, heart rate and sex (r(2) = 0.44, P < 0.0001) and for AIx were age, weight, mean arterial pressure, heart rate and sex (r(2) = 0.65, P < 0.0001). The bias between the different techniques was determined by age and sex for PWV and age, body weight, sex, heart rate and mean arterial pressure for AIx. Bland-Altman plots showed that although the techniques were closely related, the limits of agreement were wide.
CONCLUSION
Although Arteriograph values and the determinants of PWV and AIx are in close agreement with corresponding parameters obtained by Complior and SphygmoCor, respectively, the techniques are not interchangeable.

http://homepage2.nifty.com/medicalteknika/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)06時54分21秒
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薬事認可有り、小型、携帯、ワイヤレス、立居計測可、

The Arteriograph is a diagnostic instrument which is able to measure the severity of arteriosclerosis. This is the condition of arterial blockage caused by inflammation or damage within arteries followed by an over production of a compound known as plaque created by the body to repair the damage. Plaque is made up of cholesterol, minerals such as calcium, specialised red blood cells known as platelets and other clotting factors.

The Arteriograph is a simple and painless, non invasive investigation that can diagnose arteriosclerosis at an early stage .

Symptoms of arterial blockage include chest pain from blocking heart arteries, or the loss of sensation, numbness, or cramp in the lower limbs as the leg arteries block. These symptoms tend not to occur until a considerable amount of an artery is blocked and other arteries are no longer able to offer effective collateral circulation. Symptoms of cardiovascular disease leading to heart attacks and strokes usually appear only in the last and late stages and so arterial disease remains unrecognised through most of its development. The importance of identifying diseased arteries is clear.


Conventional testing

Current investigations are not designed to detect early occlusion of blood vessels. The Gold Standard exercise or stress ECG (where an individual is placed on a running track with leads on their chest attached to the ECG), will not necessarily change until 70% of a coronary (heart) artery is blocked. More sensitive investigation such as angiography are invasive and demand radiation through x-rays and the injection of a 'dye' to show up the arteries. About 1 in 500 angiographies cause serious or even fatal events and this figure is even higher if you take patients who have chest symptoms. These methods of investigation are effective only in diagnosing late stage disease and can carry risks.

The results of the Arteriograph closely correlate to the invasive tests specifically the Coronary Calcium Score and afore mentioned Coronary Angiography with the advantage of avoiding the adverse events.


Statistics involving arterial disease

Arteriosclerosis is the cause of 40% of premature mortality. It is the main cause of heart attacks and strokes and can begin at the age of 20 although the consequences generally appear in our sixth decade. If we were able to diagnose early stage disease we would reduce these negative figures and the Arteriograph, taking only a few minutes and measuring both small and large artery resistance (the medical term for flexibility) is a sensible and valid method of testing the entire arterial system.

Approximately 48,000 people between the age of 30-69 have a heart attack each year here in the UK and 150,000 people suffer a stroke.



The Arteriograph

An individual simply has to avoid food for 3 hours prior to the test and should not drink alcohol for 10 hours nor have any caffeine for 6 hours. You shouldn’t be smoking anyway but that should not happen for at least 3 hours as well! Supplements and drugs that influence blood pressure should not be stopped unless authorised by your GP or prescribing doctor. Most such medication in most people can be stopped for a few days without any longer term risk allowing a clear indication of a patient's arterial status.

After lying down without movement and thinking nice thoughts for a few minutes then a blood pressure cuff is inflated around the upper arm for a few seconds. Other than some tightness no other discomfort is felt.

The specialised computer inflates the cuff two or three times as it establishes the measurements and the nurse will also add in some specific details including the length from your neck to the base of your abdomen ? the length of your aorta.

The whole process can take as little as 20 minutess

The doctor reading the results will be able to comment on:
? The resistance (flexibilty) of small arteries
? The resistance (flexibility) of large arteries
? The blood pressure in the aorta ? Central Blood Pressure
? Cardiac fitness
? Some other more technical parameters that may be of use to your doctors

The results are provided to you (and any practitioners of your choice) with a guide to interpretation.


The benefits of early diagnosis

It is very important to recognise that early diagnosis of arterial disease allows for intervention that is capable of slowing down the progress of arterial disease and at best possibly reverse the condition.


http://homepage2.nifty.com/medicalteknika/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)06時52分47秒
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薬事認可有り、小型、携帯、ワイヤレス、立居計測可、

Smoking and Hypertension Associated With Greater Arterial Stiffness in People Aging With HIV
By Fred Furtado
From TheBodyPRO.com
November 8, 2013
Having HIV is not independently associated with arterial stiffness -- a trait linked to cardiovascular disease risk -- despite HIV-infected individuals having a modest, but clinically significant, increase in arterial stiffness when compared to their uninfected counterparts. Instead, factors such as smoking and hypertension may account for the increase, according to study results presented at EACS 2013 in Brussels, Belgium.
To provide some background, HIV infection has been associated with an increased risk of cardiovascular disease and one of the markers for this condition is arterial stiffness, which is measured by pulse wave velocity (PWV), or how fast blood moves through the circulatory system. With age, or other changes to the arterial wall, blood vessels become stiffer and blood moves faster through the system, giving the heart less time to rest. PWV is directly dependent on mean arterial pressure (MAP) and past research has shown that an increase of 1 m/s (meter per second) in PWV is associated with a 14% greater incidence in total cardiovascular events.
However, studies measuring PWV in HIV-infected patients have been small and their results inconsistent. So, researchers led by Katherine Kooij, M.D., compared PWV in a cohort of HIV-infected and HIV-uninfected people to determine if there is an independent association between HIV and PWV, as well as possible determinants of PWV.
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The study included 566 HIV-infected and 511 HIV-uninfected individuals, all 45 or older. Both groups had comparable median ages (52.8 versus 52), gender distribution (89.1% men versus 86% men) and proportion of men who have sex with men (76.4% versus 71.4%). However, the HIV-infected group included more current smokers (32.9% versus 24.8%) and users of antihypertensive drugs (31.3% versus 22.4%). The HIV-infected participants also displayed higher levels of inflammation and immune activation markers, such as hs-CRP and sCD163.
The researchers performed three measurements of PWV, as well as systolic and diastolic blood pressure, using an Arteriograph system, which registers oscillometric pressure waves in the aorta through an upper arm cuff. Additional information on potential determinants of arterial stiffness was collected with laboratory measurements and questionnaires. The data underwent a statistical analysis with multivariable linear regression models using PWV as a dependent variable, adjusted for MAP.
The analysis revealed a slightly higher, but significant unadjusted PWV in HIV-infected individuals than in HIV-uninfected individuals (7.9 m/s versus 7.7 m/s, P = .004). When these results were adjusted for MAP and gender, the difference between the two remained at 0.19 m/s (P = .04). If compared to a PWV increase due to age (+0.29 m/s per 5 years older, P < .001), having a positive HIV status would be the equivalent of being 3 to 3.5 years older.
However, when the PWV values were adjusted for other factors, such as smoking and use of antihypertensive drugs, HIV-infected status was no longer independently associated with arterial stiffness. In this setting, the difference between HIV-infected and HIV-uninfected PWV was only 0.022 m/s (P = .8). In contrast, every 5 pack-years (smoking 20 cigarettes a day per year, about 7,305 cigarettes) for current smokers accounted for a difference of 0.121 m/s (P < .001), while use of antihypertensive drugs represented an increase of 0.527 m/s (P < .001). The researchers also found that the inflammation marker hs-CRP and the monocyte activation marker sCD163 were associated with a higher PWV: 0.039 m/s (P = .001) and 0.056 m/s (P = .04), respectively. But sCD163 was only a significant determinant in men.

http://homepage2.nifty.com/medicalteknika/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)06時48分33秒
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薬事認可有り、小型、携帯、ワイヤレス、立居計測可、

Validation of Arteriograph ? A New Oscillometric Device to Measure Arterial Stiffness in Patients on Maintenance Hemodialysis
Nemcsik J. ? Egresits J. ? El Hadj Othmane T. ? Fekete B.C. ? Fodor E. ? Szabó T. ? Járai Z. ? Jekkel C. ? Kiss I. ? Tislér A.
Kidney Blood Press Res 2009;32:223?229 (DOI: 10.1159/000228935)
Abstract
Background: Measuring arterial stiffness (augmentation index (AI), aortic pulse wave velocity (PWV)) in hemodialysis (HD) patients has prognostic significance. To assess its validity, the new oscillometric Arteriograph device (AIA, PWVA) was compared to the validated PulsePen tonometer (AIP, PWVP). Methods: AI and PWV were measured in 98 patients with both devices before HD. Validity was evaluated by Pearson’s correlation, Bland-Altman analysis, and by assessing the prognostic value of AI and PWV to predict cardiovascular (CV) mortality over 29 months. Results: Correlation between AIP and AIA was significant (R = 0.527, p < 0.001). The mean difference of AI values obtained by the two devices was ?20.6%, and 30% of the paired AI differences fall outside the ±1 SD boundary of the mean between-device difference. There was no significant correlation between the PWVP and PWVA readings (R = 0.173, p = 0.097). The average difference of PWV values by the two devices was ?1.2 m/s, and 20.6% of the paired PWV differences fall outside the ±1 SD boundary. In survival analyses, only PWVP but not PWVA was significantly related to CV mortality. Conclusion: Lack of correlation between PWVP and PWVA and lack of prognostic significance of PWVA suggest limited validity of Arteriograph to determine PWV in patients on HD.

http://homepage2.nifty.com/medicalteknika/tensiomedguide/

 

Arterial Stiffness

 投稿者:メディカルテクニカ  投稿日:2014年 5月19日(月)06時46分51秒
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Arterial Stiffness Analysis

There are various methods for cardiovascular examination. The ECG shows signs of oxygen deprivation, when coronaries are blocked for 70% or more. Other invasive procedures such as cardiac catheterization will detect abnormalities at an earlier stage, but such tests are only performed if people have complaints.

The AORTOGRAM is performed with the Arteriograph®. This is a relatively new method that is so sensitive, that abnormalities can be detected in a very early stage .

The Arteriograph measures both the loss of arterial functioning and arterial stiffening.

Loss of function is expressed in the unit AIX: the Augmentation Index. The AIX is a measure of the total resistance of all blood vessels. Against this resistance, the heart pumps every stroke. The higher this resistance is, the higher the work load for the heart. An increased resistance of the blood vessels is caused by loss of function of the endothelium.

Loss of elasticity (stiffness) of the arteries is expressed in the unit of measure PWV: Pulse Wave Velocity, or the speed at which the aortic pulse is going. In case of aortic stiffening the speed of the pulse increases. The higher the PWV, the more stiffening of the aorta has already occurred.

Both loss of function and stiffening are categorized in four groups:

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