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Interpreting and acting upon home blood pressure readings: a qualitative study.

ABSTRACT: BACKGROUND: Recent guidelines recognize the importance of home blood pressure monitoring (HBPM) as an adjunct to clinical measurements. We explored how people who have purchased and use a home blood pressure (BP) monitor make sense of, and act upon, readings and how they communicate with their doctor about the practice of home monitoring. METHODS: A qualitative study was designed and participants were purposively recruited from several areas in England, UK. Semi-structured in-depth interviews were conducted with 18 users of home BP monitors. The transcribed data were thematically analysed. RESULTS: Interpretation of home BP readings is complex, and is often characterised by uncertainty. People seek to assess value normality using 'rules of thumb', and often aim to identify the potential causes of the readings. This is done by drawing on lay models of BP function and by contextualising the readings to personal circumstances. Based on the perceived causes of the problematic readings, actions are initiated, mostly relating to changes in daily routines. Contacting the doctor was more likely when the problematic readings persisted and could not be easily explained, or when participants did not succeed in regulating their BP through their other interventions. Most users had notified their doctor of the practice of home monitoring, but medical involvement varied, with some participants reporting disinterest or reservations by doctors. CONCLUSIONS: Involvement from doctors can help people overcome difficulties and resolve uncertainties around the interpretation of home readings, and ensure that the rules of thumb are appropriate. Home monitoring can be used to strengthen the patient-clinician relationship.

SUBMITTER: Vasileiou K

PROVIDER: S-EPMC3726339 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Interpreting and acting upon home blood pressure readings: a qualitative study.

Vasileiou Konstantina K Barnett Julie J Young Terry T

BMC family practice 20130713

<h4>Background</h4>Recent guidelines recognize the importance of home blood pressure monitoring (HBPM) as an adjunct to clinical measurements. We explored how people who have purchased and use a home blood pressure (BP) monitor make sense of, and act upon, readings and how they communicate with their doctor about the practice of home monitoring.<h4>Methods</h4>A qualitative study was designed and participants were purposively recruited from several areas in England, UK. Semi-structured in-depth ...[more]

PMID: 23849055

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Project description:BackgroundAccurate blood pressure (BP) measurement is essential for the diagnosis and management of hypertension. In clinical practice, BP is estimated using noninvasive methods with significant variability of application of guidelines in clinical practice, impacting the accuracy and certainty of BP measurements.ObjectiveWe sought to assess how BP is measured in clinical practice.MethodsA survey was administered through professional societies that included predominantly cardiologists. Assessment of adherence to guideline recommendations for BP assessment was measured and compared to the level of confidence in clinic BP measurement.ResultsThere were 571 surveys completed. The majority of respondents were cardiologists (61.1%), with 47 preventive cardiologists. BP was routinely checked in both arms by 53% at the initial visit, 48% check BP once each visit, and 64% wait 5 min before initial BP assessment. Automated BP assessment is used by 58% respondents. The majority (83%) trust their BP readings, and those who trust their BP readings are more likely to perform the initial BP assessment themselves, compared to those who do not trust the clinic BP readings (30.2% vs. 13.6%, P = 0.009). Accurate BP measurement is performed by 23% of cardiologists, and more likely performed accurately by a preventive cardiologist (38.3%) compared with other cardiologists (20.0%, P = 0.007). Accurate BP measurement is more likely for those who perform the initial BP themselves rather than any other staff (36.8% vs. 17.9%; P<0.001); and for those who repeat BP manually (80% vs. 54%; P<0.001), compared to those who do not measure BP accurately. Despite the inaccuracy of BP measurement, there is a high level of confidence in the BP readings.ConclusionsAccurate BP assessment continues to remain suboptimal in clinical practice. Reliability of BP assessment requires education, identifying barriers to implementation of recommendations and engagement of the entire team to improve BP assessment.

Project description:To explore the experiences of patients and professionals taking part in a randomised controlled trial (RCT) of remote blood pressure (BP) telemonitoring supported by primary care. To identify factors facilitating or hindering the effectiveness of the intervention and those likely to influence its potential translation to routine practice. Qualitative study adopting a qualitative descriptive approach. 25 patients, 11 nurses and 9 doctors who were participating in an RCT of BP telemonitoring. A maximum variation sample of patients from within the trial based on age, sex and deprivation status of the practice was sought. 6 primary care practices in Scotland. Data were collected via taped semistructured interviews. Initial thematic analysis was inductive. Multiple strategies were employed to ensure that the analysis was credible and trustworthy. Prior to the trial, both patients and professionals were reluctant to increase the medication based on single BP measurements taken in the surgery. BP measurements based on multiple electronic readings were perceived as more accurate as a basis for action. Patients using telemonitoring became more engaged in the clinical management of their condition. Professionals reported that telemonitoring challenged existing roles and work practices and increased workload. Lack of integration of telemonitoring data with the electronic health record was perceived as a drawback. BP telemonitoring in a usual care setting can provide a trusted basis for medication management and improved BP control. It increases patients' engagement in the management of their condition, but supporting telemetry and greater patient engagement can increase professional workloads and demand changes in service organisation. Successful service design in practice would have to take account of how additional roles and responsibilities could be realigned with existing work and data management practices. The embedded qualitative study was included in the protocol for the HITS trial registered with ISRCTN no. 72614272.

Project description:ObjectiveSimple forms of blood pressure (BP) telemonitoring require patients to text readings to central servers creating an opportunity for both entry error and manipulation. We wished to determine if there was an apparent preference for particular end digits and entries which were just below target BPs which might suggest evidence of data manipulation.DesignProspective cohort study SETTING: 37 socioeconomically diverse primary care practices from South East Scotland.ParticipantsPatients were recruited with hypertension to a telemonitoring service in which patients submitted home BP readings by manually transcribing the measurements into text messages for transmission ('patient-texted system'). These readings were compared with those from primary care patients with uncontrolled hypertension using a system in which readings were automatically transmitted, eliminating the possibility of manipulation of values ('automatic-transmission system').MethodsA generalised estimating equations method was used to compare BP readings between the patient-texted and automatic-transmission systems, while taking into account clustering of readings within patients.ResultsA total of 44 150 BP readings were analysed on 1068 patients using the patient-texted system compared with 20 705 readings on 199 patients using the automatic-transmission system. Compared with the automatic-transmission data, the patient-texted data showed a significantly higher proportion of occurrences of both systolic and diastolic BP having a zero end digit (OR 2.1, 95% CI 1.7 to 2.6) although incidence was <2% of readings. Similarly, there was a preference for systolic 134 and diastolic 84 (the threshold for alerts was 135/85) (134 systolic BP OR 1.5, 95% CI 1.3 to 1.8; 84 diastolic BP OR 1.5, 95% CI 1.3 to 1.9).ConclusionEnd-digit preference for zero numbers and specific-value preference for readings just below the alert threshold exist among patients in self-reporting their BP using telemonitoring. However, the proportion of readings affected is small and unlikely to be clinically important.Trial registration numberISRCTN72614272; Post-results.

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Interpreting and acting upon home blood pressure readings: a qualitative study.

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Interpreting and acting upon home blood pressure readings: a qualitative study.

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