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digital blood pressure machine vs manualIf you need to see if the medication is working or not, or how much your daily routine affects your blood pressure fluctuations. Then you are going to need a Blood Pressure Monitor. It can give you an idea of how to control your blood pressure. They both are very reliable and convenient. This article is definitely going to help you. We have compared them so you can determine the better choice for you. Most of the doctors recommend using Digital BP monitors in Home Blood Pressure Monitoring because digital bp monitors don’t require any professional knowledge for testing. They measure your Blood Pressure with some additional features like pulse rate, memory, and hypertension indicator. Learn to use a Digital BP Monitor. Mercury BP Monitors test blood pressure by affecting the height of a column of mercury. Aneroid BP monitors the auscultation technique to test your Blood pressure. They are very accurate and are used in hospitals for clinical blood pressure testing. Learn How to use a manual BP Monitor. We are going to compare them on some points to see which one would be a better choice for you. You can just put the cuff around your arm, and it will automatically get your systolic and diastolic pressure in no time. You have to rapidly push the bulb to fully inflate the cuff and then deflate it by rotating the knob on the cuff. It will give you less accurate results if you place it anywhere another then upper arm. They are more accurate than digital BP Monitors. Digital Blood pressure monitors use oscillation techniques to test your blood pressure, which can be affected by irregular heartbeats and pulse rate. Check out Best BP Monitors in India. It has a very easy to use interface which doesn’t need any professional knowledge. If you are just starting to test your blood pressure, you may need assistance with using it.http://pilot-market.ru/new/files/bron-coucke-mandoline-manual.xml
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Some digital Monitors come with a backlit display, which is very helpful to read the results in a room with low light or for the people who have a low vision. This display can be hard to read for some people. Still, if we see the additional features that come with a Digital Blood Pressure Monitor, it is more cost-effective than the manual BP Monitor. You can use it home monitoring after consulting your doctor. They usually a cuff and a display so you can put them in a bag and test your blood pressure wherever you want. It is hard to carry all of this stuff around. You will need a separate carrier if you need to take it anywhere with you. You will need to change or recharge the battery after some use. Cleaning a digital BP monitor is easy. Recalibration doesn’t require too much time and effort. Recalibrating a manual Blood pressure monitor can be time-consuming, and it takes more effort. Some BP monitors also show pulse rate and indicate irregular heartbeats and hypertension. You can choose the right one by consulting with your doctor. If you need a more accurate BP Monitor, then manual Blood pressure would be the perfect choice for you. But which one is the best one is very strange. But this blog is very informative and if you are looking for some more information for Best BP monitor. Thank you. This article has been cited by other articles in PMC. Abstract BACKGROUND Accuracy of blood pressure (BP) measurement in clinical settings is one of the most concerns despite of promotion in techniques for the measurement of BP. Our aim was to compare automated versus manual BP measurement in intensive care unit (ICU), coronary care unit (CCU), and emergency room patients. METHODS Totally, 117 patients in ICU, CCU, and emergency department were registered in the study. Demographic information was recorded. The cardioset heart monitoring device was used for measuring BP and mercury sphygmomanometer with appropriate cuffs was used for manual method.http://www.archimax.ch/dynamic-images/cms/bron-mandoline-manual.xml Then, the mean BP of two methods was compared based on different age, sex, weight, and disease findings. Keywords: Intensive Care Unit, Coronary Care Unit, Automated, Manual, Blood Pressure Introduction Accuracy of blood pressure (BP) measurement in clinical settings is one of the most concerns despite of considerable promotion in measurement techniques. 1, 2 Manual BP measurement can be so accurate when using a device such as the mercury manometer which is similar to the mean awake ambulatory blood pressure (AABP). 2 Recent studies demonstrate that an accurate BP measurement requires at least 14 minutes, including a period of rest and a conversation between physician and patient to reduce the white coat anxiety 3, 4 which had low likelihood in routine clinics. This may lead to overestimate BP in healthy individuals. 5 - 7 In recognizing the concerns about manual office blood pressure (MOBP) measurement, new techniques have been recommended. Proposals for improve assessment of BP status include greater reliance on home and 24 hours ambulatory BP monitoring. 8, 9 This protocol eliminates white coat anxiety and receiving unnecessary drug treatment for hypertension in healthy individuals. 10 Advances in automated office blood pressure (AOBP) measurement provide a third option for accurate measurement of BP status which eliminates many factors influencing imprecise BP. 11 - 13 Suokhrie et al. 14 showed that automated readings were averaged 3.9 points higher than manual method; and, based on these findings, a protocol was recommended in an acute care psychiatry unit that BP must be measured manually for each patient. In another study performed by Myers et al. 15 showed that the prevalence of masked hypertension was lower with AOBP compared with MOBP. We sought to evaluate the difference between automated and manual BP measurement in various clinical conditions among our patients over a 1-year period.http://www.raumboerse-luzern.ch/mieten/3m-drive-thru-system-manual Materials and Methods This cross-sectional study was conducted in Shariati Hospital of Isfahan, center of Iran, from August to December 2014. Patients hospitalized in intensive care unit (ICU) and coronary care unit (CCU) and emergency department were enrolled to study. Exclusion criteria were lack of patients’ consent to participate to study. Totally, 125 patients in ICU, CCU, and emergency department who had been hospitalized for different chief complaint had considered for the study. Eight patients refused consent for entering the study, so the study accomplished with 117 patients. Demographic information for each patient was recorded, as well as height, weight, BP and mid-upper arm circumference (MUAC), and body mass index (BMI). Standardized questionnaire was used to obtain the information of alcohol consumption, smoking, and medications status. The cardioset heart monitoring device was used for measuring BP with noninvasive BP cuff. Meanwhile, BPs were measured manually, by an adult size cuff and standard sphygmomanometer. BP of patients was measured based on American Heart Association (AHA) recommendation, and after 5-minute rest, BP was measured by automated machine. In manual method of measurement, appropriate cuff was chosen. One sample t-test was used to detect differences between SBP and DBP from two methods. Intraclass correlation coefficient evaluated agreement between automated and manual BP measurements. P Results During the enrollment period, 117 adults were seen in the CCU, ICU, and emergency department, and agreed to participate in our study. In this manner, automated DBP was higher in cases with multiple trauma, while, manual DBP was higher in neurosurgery cases, that almost all of them were ICU admitted. Discussion Based on our knowledge, this is the first independent, prospective, observational study on the potential association between BP measurement method and BP levels in Iran. Suokhrie et al.http://apartmangyula.com/images/breadman-instruction-manual-tr555lc.pdf 14 revealed a significant difference between manual and automatic SBP readings (P Myers et al. 16 showed that AOBP reduced office-induced hypertension. The decrease in MOBP was seen in participation in a research study, and it was not related to any specific intervention. Myers et al. 17 demonstrated that using AOBP measurement in routine primary care significantly reduced the white coat response in comparison with MOBP assessment. AOBP measurement was more accurate than MOBP measurement regarding to AABP assessment. Heinemann et al. 18 showed agreement between automated and manual readings on one set of criteria for SBP and DBP. It was mentioned automated machine underestimated SBP and DBP by comparing of mean values of two methods. They concluded that the Dinamap 8100 machine can be used with some degree of confidence to measure SBP in a general population, but its DBP measurements should be considered accurate cautiously. 18 The manual BP measurement, especially with mercury sphygmomanometer has been used for more than 100 years. Regarding to advances in BP recording methods, mercury method seemed to be removed from the clinics, but, mercury sphygmomanometer remains available as a reference standard until an alternative device will be recognized as much. 19, 20 Studies comparing manual with automated BP measurement have shown that manual method has more levels. This difference can be decreased if some rules for automated method are followed: patients rest in a quiet room, and multiple readings considered to make a decision. 2 The presence of a white coat hypertension is likely, if marked decreases in automated method are seen by leaving the patient alone in the room. 21 Physicians in practice can use several examining rooms for performing physical exam for patients. This measure is suitable for automated and manual method, even when the manual way is used by considering 5 minutes of rest before the BP recording.http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1628582422c7c7---buy-manual-click-counter.pdf An important point for automated method is that patients should be seated in a quiet room for some minutes while readings are being taken. If only one or two readings are considered without adequate rest, a white coat effect would interfere with recordings, as seen with the first two readings taken by BpTRU device. 21 Adequate patients’ rest, in addition, to use validated automated device with multiple recordings lead to accurate BP measurement. Manual BP recording is highly dependent to environment condition. BP will be detected higher when taken by physicians instead of nurses, in treatment settings in comparison to non-treatment settings and at office instead of home. 22, 23 Manual method may be 15-18 mmHg higher than the AABP if recorded in routine clinics. 8 Automated and AABP measuring methods was disagreed less than 3 mmHg in research and clinical settings. 2 Manual BP recording also decreases if a non-treatment setting such as an ambulatory BP monitoring unit be used instead of physician’s office. 23 It is not true for AOBP measuring. 24 Conclusion The results of this study suggested that manual method in measurement of BP frequently show higher BP, especially in patients admitted to hospitals - affecting up to 15 mmHg higher - and is strongly associated with age, sex, different disease, and obesity. Based on this study, we cannot completely trust to automatic findings in measurement of BP in hospital setting and especially in critical conditions, and manual method should be considered as a reference standard. Acknowledgments We gratefully acknowledge all the nurses of CCU, ICU, and emergency ward of Isfahan Shariati hospital. Footnotes REFERENCES 1. Pickering TG, Hall JE, Appel LJ, Falkner BE, Graves J, Hill MN, et al.www.deolestatewinery.com/files/canon-f-710-calculator-manual.pdf Recommendations for blood pressure measurement in humans and experimental animals: part 1: blood pressure measurement in humans: a statement for professionals from the Subcommittee of Professional and Public Education of the American Heart Association Council on High Blood Pressure Research. Prevalence of white coat effect in treated hypertensive patients in the community. Staessen JA, Byttebier G, Buntinx F, Celis H, O'Brien ET, Fagard R. Antihypertensive treatment based on conventional or ambulatory blood pressure measurement. A randomized controlled trial. Wright JM, Mattu GS, Perry Jr, Gelferc ME, Strange KD, Zorn A, et al. Validation of a new algorithm for the BPM-100 electronic oscillometric office blood pressure monitor. White WB, Anwar YA. Evaluation of the overall efficacy of the Omron office digital blood pressure HEM-907 monitor in adults. Stergiou GS, Tzamouranis D, Protogerou A, Nasothimiou E, Kapralos C. Validation of the Microlife Watch BP Office professional device for office blood pressure measurement according to the International protocol. Suokhrie LN, Reed CR, Emory C, White R, Moriarity CT, Mayberry J. Differences in automated and manual blood pressure measurement in hospitalized psychiatric patients. Myers MG, Godwin M, Dawes M, Kiss A, Tobe SW, Kaczorowski J. The conventional versus automated measurement of blood pressure in the office (CAMBO) trial: Masked hypertension sub-study. Myers MG, Godwin M, Dawes M, Kiss A, Tobe SW, Grant FC, et al. Heinemann M, Sellick K, Rickard C, Reynolds P, McGrail M. Automated versus manual blood pressure measurement: A randomized crossover trial. Scientific Committee on Emerging and Newly Identified Health Risks SCENIHR. Head GA, Mihailidou AS, Duggan KA, Beilin LJ, Berry N, Brown MA, et al. Myers MG, Valdivieso MA. Myers MG, Valdivieso M, Kiss A. Consistent relationship between automated office blood pressure recorded in different settings. NAME, ADDRESS, E-MAIL ID OF THE CORRESPONDING AUTHOR: Dr.http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1628582531a7f0---buy-manual-breast-pump-online.pdf Bhaskar Shahbabu, 110, Chittaranjan Avenue, Kolkata-700073, India. Abstract Introduction Hypertension is one of the major public health problem affecting the whole world so its accurate measurement is of utmost importance for its early diagnosis and management. Concerns related to the potential ill effects of mercury on health and environment, has led to the widespread use of non-mercury sphygmomanometers. Aim A study was conducted to compare the accuracy of readings of aneroid and digital sphygmomanometers in reference to mercury sphygmomanometers and determine the hypertensive classification agreement between the mercury and non-mercury devices. Materials and Methods The study was conducted in an OPD of a health centre in a rural community of West Bengal which is the rural field practice area of our institute. An aneroid and a digital sphygmomanometer were compared to a properly calibrated mercury sphygmomanometer. All the subjects above the age of 25 years, in two days per week, selected randomly from five working days per week in a period of one month were selected. Two blood pressure readings of each of 218 study subjects was recorded with each pretested sphygmomanometer. Paired t-test, Kappa coefficients, sensitivity and specificity tests were done. Receiver Operating Characteristics curve analysis was done and Youden index was estimated to detect the optimal cut off point for the diagnosis of hypertension by non-mercury sphygmomanometers. Results Data analysis of 218 study subjects showed the mean difference of the mercury reading and the test device was much less for aneroid than that of the digital device for both systolic and diastolic blood pressure. More than 89 of aneroid readings and less than 44 of the readings by digital device had absolute difference of 5mm Hg.Sensitivity and specificity of aneroid device was higher (86.7 and 98.7) than digital device (80 and 67.7).http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/162858257de5e6---Buy-manual-drain-snake.pdf Receiver Operating Characteristic curve had larger area under the curve for aneroid device than digital device for both SBP and DBP. Conclusion The aneroid device had better accuracy than the digital device as compared to mercury sphygmomanometer and should be used for proper and better management. Keywords: Blood pressure measurement, Digital sphygmomanometer, Hypertension, Receiver operating characteristics curve, youden index Introduction Increase in blood pressure is a grave risk factor considering the population health. It not only increases the risk of coronary heart disease and ischaemic and haemorrhagic stroke, but is also associated with numerous complications like heart failure, peripheral vascular disease, renal impairment, retinal haemorrhage and visual impairment. While such findings substantiate the catastrophic consequences of underestimating blood pressure in an individual, it has been estimated that overestimation of true blood pressure by same level would result in inappropriate treatment with anti-hypertension medications in almost 30 million Americans. Therefore, accurate estimation of blood pressure up to the error level as low as 5 mm of Hg is of supreme importance at the age of growing enigma of hypertensive disorders. But the fear of percious effect of potential mercury toxicity and the problems associated with disposal of mercury, has led to decrease use of mercury instruments worldwide. Non-mercury sphygmomanometers like aneroid and more recently, digital ones have replaced the use of traditional Mercury instruments in many settings. However, such evidences are scanty in Indian context, where there is an obvious need of more feasible and inexpensive instruments because of large population size, increased poverty and decreased tendency to seek institution based medical care.www.denizraf.com/image/files/canon-f-604-user-manual.pdf Aim In this context we conducted this study to compare the accuracy of readings of aneroid and digital sphygmomanometers in reference to mercury sphygmomanometers and determine the hypertensive classification agreement between the mercury and non-mercury devices. Materials and Methods This was a clinic-based cross-sectional analytical study to conduct diagnostic accuracy of two instruments: aneroid sphygmomanometer and digital sphygmomanometer. In an OPD of the primary health centre under the purview of our institute, we examined all the subjects above the age of 25 years, in two days per week, selected randomly from five working days per week in a period of one month (January, 2015-February, 2015). The age criteria was selected so, because we experienced 0 hypertension in the OPD among individual aged 25 years or less, who reported in the OPD in the previous one month. The total number of participants was found to be 218. For the measurement of blood pressure in each individual we used 3 types of sphygmomanometers: The readings of Aneroid sphygmomanometer (MDF808B) and Digital sphygmomanometer (Omron Hem-7111) were compared to that of a mercury sphygmomanometer (NOVAPHON). All the instruments were checked, standardized and calibratedby experts. Approval of the Institutional Ethics Committee and informed consent from the study participants were taken. Blood pressure of each participant was measured twice by each instrument and average of the two readings was noted down in a data entry form. All the individual blood pressure measurements of the study participants were repeated at 30 second intervals. Statistical Analysis To find out the mean difference of estimated blood pressures among all individuals by the three instruments, paired t-tests were performed. Agreement of measurement between aneroid and gold standard (mercury instrument) and between digital and gold standard (mercury instrument) was analysed using kappa coefficient and sensitivity and specificity were estimated. Receiver Operating Characteristics (ROC) curve analyses were performed to find out the accuracy of estimate of the test instruments (aneroid and digital) in reference to mercury instrument and respective cut-off values were determined by calculating Youden index. In our study the absolute difference within 5 mm Hg.While the absolute difference of within 5 mm Hg.The kappa agreement were 0.88 and 0.39 for the aneroid and digital devices respectively (both were statistically significant). The results showed that the area under the curve for both systolic and diastolic blood pressures measured by aneroid devices was more than that of the measurements done by digital device and it clearly depicts that, the diagnostic accuracy of aneroid sphygmomanometer was better than digital sphygmomanometer for measuring both systolic and diastolic blood pressures. It showed (not shown in the table) that the optimal cut off of the readings of non-mercury sphygmomanometers to detect hypertension (with reference to the gold standard mercury sphygmomanometers) was different. B: ROC for diastolic blood pressure measured by aneroid device. C: ROC for systolic blood pressure measured by digital device. D: ROC for diastolic blood pressure measured by digital device. Discussion The study was conducted to determine and compare the accuracy of non-mercury instruments and their ability to correctly diagnose hypertension. An aneroid and a digital instrument were selected for the purpose and were judged with respect to a properly calibrated mercury sphygmomanometer (Gold standard). This suggested the superiority of aneroid devices with respect to digital instruments in accurately measuring blood pressure in primary care setting. All the indicators showed better results for aneroid device in comparison to the digital device. The area under the ROC curve for both systolic and diastolic blood pressure was much larger for aneroid than digital devices suggesting that aneroid device was better detector of hypertension than the digital device.This is important in the current context because we presently have same criterion for detecting hypertension measured by all the devices. In another study among more than 8000 patients researchers used 604 sphygmomanometers (53 digital, 32 aneroid, 13 mercury and 2 hybrid devices). In our study, we examined the accuracy of single instrument of each type and found the aneroid device to be superior than the digital device. This may be attributed to the stringent acceptable error criteria of the former study, which accepted only errors within 3 mm oh Hg which was much narrower than our criteria of 5 mm of Hg. In our study we used the same criteria of acceptability. Another potential reason of difference in finding may be that aneroid devices needed yearly maintenance. In our study we used new, out-of-box instruments for measurement, which might have resulted in greater accuracy of aneroid device. However, in a similar study like that of ours, but with a randomized single visit cross-over design, among 95 individuals, researchers found the aneroid device performing much better than digital device. In another study, with smaller sample size than that of our study, the researchers also observed that aneroid instruments were significantly more accurate than digital instruments of both arm and wrist type. Use of more advanced statistical techniques using ROC curve estimation, and Youden Index calculation, furthermore substantiated the evidence gathered from our study and we additionally found the evidence that aneroid devices were superior to digital devices in classifying hypertensive and non-hypertensive individuals apart from the findings of agreement of mean and kappa statistic. The major strength of this study was conducting research in primary care OPD setting, which has been set as the first opportunity of contact between people of the country and the doctor in government system. Additionally blood pressure of each individual by all the three instruments was measured by a single examiner, who was a doctor. This obviated the chance inter-rater difference in measurement of blood pressure. Thirdly, we analysed the blood pressure of the individuals measured by three separate instruments by both norm reference and criterion reference analyses. Therefore, we were able to find out the accuracy of exact measurement of the value of blood pressure as well as classify individuals between hypertensive and normotensive category. Fourthly, we estimated appropriate cut-off values for both aneroid and digital instrument and this was never performed before while comparing the two instruments. Limitation The major limitation of the study was that it was conducted within the OPD climate, which carried with itself the chances of bias due to studying individuals seeking health service only, and the result cannot be generalised to all individuals of the community. Secondly, we used only one instrument of each type and therefore from this study it is impossible to conclude the overall effectiveness of aneroid and digital instruments, when batches of instruments are used in institution. Thirdly, we performed the study in only one health centre, in one season only. Considering possible error of aneroid BP in changing temperature and climate, larger study will be needed encompassing multiple sites with different climate and in different time of the year to conclusively compare the effectiveness of the two instruments; aneroid and digital. Conclusion Our study revealed the greater effectiveness of aneroid device in comparison to digital device in measuring blood pressure among individuals aged 25 years or more in the setting of primary health centre on out-patient basis. The findings implicated that the digital devices should be used with caution, doubt and suspicion. If they are at all used, we suggest that different cut-off level of hypertension should be used for making correct diagnosis of hypertension. Finally, from our study we conclude that the sensitivity and specificity of digital sphygmomanometers, though is easy to use, requiring no expertise at all, are not up to standard. If used in the community for screening there will be many people who either will be wrongly or misdiagnosed of hypertension. The field staff and the community itself are often attracted to use digital sphygmomanometer because of its easy to use features requiring no expertise at all. If this instrument is taken up for use by the health personnel for detection of hypertension it may prove disastrous as far as detection, management and treatment of hypertension are concerned. Notes Financial or Other Competing Interests None. Association for the Advancement of Medical Instrumentation; 2008. Blood Pressure Randomized Methodology Study Comparing Automatic Oscillometric and Mercury Sphygmomanometer Devices. Are aneroid sphygmomanometers accurate in hospital and clinic settings. Debates about clinical trials, patient populations, and statistical analyses can seem hollow and distant when looking at an anxious patient in an exam room. At that moment, all that matters is what’s best for your patient. Yet clinically relevant data, and more importantly, rigorous discussion of that data, is the means to the end. Professional clinicians quite often need the former in order to effectively deliver the latter. To wit, two similar journal articles were recently published that arrived at two very different conclusions. Let’s take a look: The main concern raised is the potential for some hypertensive patients to be undertreated as a result. Automated oscillometric devices which have been independently validated for accuracy, Myers argues, can help eliminate such variability. He has some interesting technical observations about the Landgraf, et al article that are worth noting. I think these values are quite comparable in most clinical settings, especially when you consider that most auscultatory BPs done by medical staff have much, much faster deflation rates than in this study.” In addition, since the Landgraf, et al study used the same cardiologist for all of the manual readings, Scargle wonders if an observer-to-observer comparison would have shown similar differences. Specifically, some devices may use publicly-available data to calculate their algorithms, while others conduct clinical trials on patient populations. The size and makeup of the population therefore affects the accuracy of the resulting algorithm. For example, SunTech has been able to hone its algorithms over two decades of regular clinical testing. As a result, its devices are quite accurate. “Large differences among devices should not exist because they all have to meet basic regulatory accuracy requirements,” observes Scargle, “but differences do exist—especially on more difficult patient populations.”. SunTech has taken measures to address this and it’s our hope that other automated blood pressure manufacturers would do the same.” He’ll share his own thoughts about automatic versus manual sphygmomanometers. In the mean time, we'd like to hear yours. The simple design is a big reason why.