The extent and implications of sphygmomanometer calibration error in primary care

Rouse, Andrew; Marshall, Tom

doi:10.1038/sj.jhh.1001241

Cited by 62 publications

(46 citation statements)

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“…Additionally poor maintenance and calibration of sphygmomanometers can also lead to errors in BP measurement. 8 Terminal digit bias in BP recording, where the terminal digit zero is over-represented as a proportion of all recorded values, has also been well described. [9][10][11][12][13][14][15][16][17][18][19][20] This tendency has been reported in a number of settings, including routine general practice, [9][10][11] primary care hypertension screening initiatives, 12 clinical trials, 13 antenatal clinics 14 and in specialty hypertension clinics.…”

Section: Introductionmentioning

confidence: 99%

Variation in recorded blood pressure terminal digit bias in general practice

2007

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This study aims to identify the extent of terminal digit bias in routinely recorded blood pressures (BP) across a number of different general practices and report on changes in terminal digit bias over a 10-year period. It also explores the effect this may have had on the mean recorded BP in this population. BP records were taken from The Health Improvement Network database containing anonymized patient records from information entered by UK general practices in the financial years 1996-1997 to [2005][2006]. The proportion of measurements ending in zero and the mean BP readings were calculated for each practice and for each year of data. Over this 10-year period the percentage of systolic BPs with zero terminal digits fell from 71.2 to 36.7% and mean recorded BP fell from 152.3 to 145.3 mm Hg. Correcting the BPs to remove terminal digit bias indicates a 2-3 mm Hg underestimation of the mean population systolic BP over this period. The between-practice variation in the percentage of zero terminal digit readings increased from 3.5 to 6.5 s.d. Although it is welcome to see a reduction in terminal digit bias, it is worrying to see the increase in variation between practices. There is evidence that terminal digit bias may lead to potential misclassification and inappropriate treatment of hypertensive patients. The increase in variation observed may therefore lead to an increased variation in the quality of care given to patients.

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Section: Introductionmentioning

confidence: 99%

Variation in recorded blood pressure terminal digit bias in general practice

2007

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“…15 Uma serie de protocolos de validação para dispositivos de medição de PA têm sido publicados nos últimos anos. Os mais utilizados são os do British Hypertension Society (BHS) e o da Association for the Advancement of Medical Instrumentation (AAMI).…”

Section: Discussionunclassified

Pacientes em pós operatório de cirurgia cardíaca: correlação entre dois métodos de medida da pressão arterial

et al. 2013

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RESUMO: Objetivo: verificar nos pacientes instáveis de pós-operatório de cirurgia cardíaca, se há correlação nos resultados da pressão arterial obtidos pelos métodos direto e indireto. Método: estudo transversal, realizado entre outubro de 2010 a maio de 2011, na unidade de pós-operatório de um hospital de Porto Alegre-Rio Grande do Sul. Incluídos pacientes de ambos os sexos, ≥ 18 anos com cateter invasivo em artéria braquial. A aferição foi efetuada simultaneamente seis horas após a cirurgia: primeiro pelo método indireto, seguida pelo método direto, no membro contra-lateral. Resultados: foram incluídos 142 pacientes, com 63,8 ±11 anos, 80 (56,3%) homens. As correlações dos valores das pressões sistólicas e diastólicas foram R=0,95 e R=0,85 respectivamente. Os valores da pressão arterial em pacientes instáveis, aferidos pelos dois métodos apresentaram forte correlação. Conclusão: entre os pacientes instáveis, independe do método de escolha, o indireto tem se mostrado confiável, conforme critério estabelecido nas diretrizes. Descritores: Enfermagem; Pressão arterial; Reprodutibilidade dos testes.ABSTRACT: Aim: to verify the correlation about values of BP obtained by direct and indirect methods in patients in the postoperative cardiac surgery. Method: cross-sectional study, conducted between October to May 2011 in a postoperative unit of a hospital in Porto Alegre, Rio Grande do Sul, approved by number 4510.Included patient about both sex and ≥ 18 years with invasive brachial artery catheter. Simultaneously, after six hours post operative, the measurement of two methods was to made:first by the indirect method later by the direct method of another member side. Results: the sample included 142 patients, 63.8±11 years, 80 (56.3%) men.The correlations of the systolic and diastolic values were R=0.95 and 0.85respectively. Conclusion: among unstable patients, independent of the method of selecting, the indirect has proven reliable according criterion established in the guidelines. Descriptors: Nursing; Arterial pressure; Reproducibility of results.

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“…Aşağıdaki konular uygun sorularla araştırıldı: Birinci basamak sağlık kuruluşlarında yapılan çalışmalarda hatalı ölçüm yapan sfi gmomanometre oranı %1-55 arasında değişmektedir (4,5,6,7,8,9) (Tablo VII).…”

Section: Anket İçeriğiunclassified

Are Measurement Readings of Hospital Sphygmomanometers Accurate?

Selim¹,

Erdem²,

Aydogdu³

et al. 2010

Turk Neph Dial Transpl

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AMAÇ:Hipertansiyonun tanı ve takibinde doğru ölçen bir sfi gmomanometre kullanılmalıdır. Bu çalışmanın amaçları hastahanede bulunan kan basıncı ölçüm aletlerinin doğruluğunu değerlendirmek ve kan basıncını ölçen sağlık personelini bu konuda bilgilendirmektir. GEREÇ ve YÖNTEMLER:119 aneroid ve 7 adet cıvalı aletin dahil edildiği çalışma 2009 yılında yapıldı. Bir anket uygulanarak personelin konu ile ilgili bilgisi ve aletler hakkında bilgi sorgulandı. Aletlerin doğruluğu bir Y bağlantı sistemi kullanılarak araştırıldı. Ayrıca aletlerin mekanik özellikleri gözden geçirildi. BULGULAR:Toplam 56 çalışan 126 aletle ilgili ankete yanıt verdi, 53 çalışan (%95) sfi gmomanometrelerin doğru ölçüm yapıp yapmadığının kontrol edilmesi gerektiğini biliyordu. Aletin doğruluğunun nasıl kontrol edileceğini bilen kişi sayısı ise 6 (%11) idi. Aletlerin hepsinin manşet boyutu standarttı. 119 aneroid aletten 49'u (%41) hatalı idi. Hata, aneroid aletlerin sadece 5 tanesinde (%4) 10 mmHg'nın üzerinde idi. Aneroid aletlerin doğruluğu ile kullanım süresi arasında istatistiksel olarak anlamlı bir fark vardı. (p<0.01). Kullanılan civalı aletlerin hiçbirinde mekanik bir sorun yoktu. 126 aletin 77'si (%61) doğru ölçüm yapıyordu. SONUÇ:Hastahanelerde kullanılan sfi gmomanometrelerin doğruluğu konusunda yapılan çalışma sayısı sınırlıdır. Yapılan az sayıdaki çalışma bizim çalışmamızda olduğu gibi sorunun önemini göstermektedir. Hastahanelerde kullanılan sfi gmomanometrelerin düzenli olarak doğrulukları test edilmeli ve personel bu konuda eğitilmelidir. ANAHTAR SÖZCÜKLER:Aneroid sfi gmomanometre, Cıvalı sfi gmomanometre, Hastahane, Hipertansiyon, Kan basıncı ölçümü, Doğruluk ABSTRACT OBJECTIVE: An accurate sphygmomanometer should be used in the diagnosis and follow up of hypertension. The aims of this study were to evaluate accuracy of hospital blood pressure measuring devices and to inform health care staff measuring blood pressure. MATERIAL and METHODS:The study which included 119 aneroid and seven mercury sphygmomanometers was conducted in 2009. The knowledge of the staff and information about devices was determined with a questionnaire. The accuracy of the devices was checked by a Y-connection system. In addition, the mechanical features of the devices were also evaluated. RESULTS:A total of 56 staff responded to the questionnaire about 126 devices and 53 staff (95%) knew that sphygmomanometers should be checked for accuracy. Six (11%) staff knew how the devices should be checked. All cuff sizes were standard. 49 (41%) of the aneroid devices were inaccurate. Inaccuracy was greater than 10 mm Hg in only fi ve (4%) of the devices. There was a statistical relationship between accuracy and usage duration of the devices (p<0.01). None of the mercury spyhgmomanometers had a mechanical problem. Of the 126 devices, 77 (61%) were accurate. CONCLUSION:The number of studies about hospital sphygmomanometers is limited. The limited number of studies emphasize the importance of the subject as in our study. The accuracy of spyhgmomanometers used in hospita...

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The extent and implications of sphygmomanometer calibration error in primary care

Cited by 62 publications

References 10 publications

Variation in recorded blood pressure terminal digit bias in general practice

Variation in recorded blood pressure terminal digit bias in general practice

Pacientes em pós operatório de cirurgia cardíaca: correlação entre dois métodos de medida da pressão arterial

Are Measurement Readings of Hospital Sphygmomanometers Accurate?

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