Knowledge, perception and practice of health professionals regarding blood pressure measurement methods: a scoping review

Adherence to proper blood pressure measurements among interns at the university of Gondar specialized referral hospital

Introduction

Blood pressure is a lateral force exerted on the wall of arteries and is critical for the normal distribution of blood containing nutrients and oxygen to metabolic tissues. It is one of the vital signs often measured by interns, nurses, and physicians at doctor's offices, at bedside, and possibly at home. Accurate blood pressure measurement is essential for proper diagnosis and management of patients, especially those with hypertension. The aim of this cross-sectional survey study is to assess the practice of measuring blood pressure by interns.

Methods

This study was conducted in the form of a survey administered through face-to-face interviews. All the interns at the Univeristy of Gondar Specialized Referral Hospital were approached. The survey included questions about devices used, patient's information, and blood pressure measurement techniques. Epi-Data version 3.1 was used for data entry and exported to STATA 17 for data management and analysis. The Chi-square test was checked to assess the eligibility of variables for logistic regression. Finally, in the multivariable binary logistic regression analysis, variables with P-value < 0.05 were considered to be statistically significantly associated. The Adjusted Odds Ratio (AOR) with 95% CI was reported to declare the statistical significance and strength of association between blood pressure measurement and independent variables.

Result

The magnitude of appropriate measurement of blood pressure among interns was 10.1 (95% CI: 7.19, 13.9). A total of 318 interns participated in the current study. Of these study participants, 65.4% (208) were males. A increase in participants age (AOR: 1.48, 95% CI: 1.09, 2.01), being male interns (AOR: 5.51, 95% CI: 1.51, 8.97), and having patients who were familiar with the procedure (AOR: 2.95, 95% CI: 1.19, 7.03) were factors significantly associated with appropriate adherence to blood pressure measurement.

Conclusion and recommendation

Only 10% of six-year medical students (Interns) were successful in appropriately assessing blood pressure. Age, being male, and patient understanding were factors significantly associated to the adherence of blood pressure measurement. Considering the frequency of BP measurement and the impact of hypertension on morbidity and mortality, efforts are needed to maximize the quality of BP measurement by health professionals. This process should begin early during training and be consistent throughout their clinical practice, supplemented by ongoing education.

Quality in screening and measuring blood pressure in China's primary health care: a national cross-sectional study using unannounced standardized patients

Background

This study aims to evaluate primary care providers' adherence to the standard of measuring blood pressure for people aged 35 or above during their initial visit, as per Chinese guidelines, and to identify factors affecting their practices.

Methods

We developed 11 standardized patients (SP) cases as tracer conditions to evaluate primary care, and deployed trained SPs for unannounced visits to randomly selected providers in seven provinces of China. The SPs used a checklist based on guidelines to record whether and how blood pressure was measured. Data were analyzed descriptively and regression analysis was performed to examine the association between outcomes and factors such as provider, patient, facility, and clinical case characteristics.

Findings

The SPs conducted 1201 visits and found that less than one-third of USPs ≥35 had their blood pressure measured. Only 26.9% of migraine and 15.4% of diabetes cases received blood pressure measurements. Additionally, these measurements did not follow the proper guidelines and recommended steps. On average, 55.6% of the steps were followed with few providers considering influencing factors before measurement and only 6.0% of patients received both-arm measurements. The use of wrist sphygmomanometers was associated with poor blood pressure measurement.

Interpretation

In China, primary care hypertension screening practices fall short of guidelines, with infrequent initiation of blood pressure measurements and inadequate adherence to proper measurement steps. To address this, priority should be placed on adopting, implementing, and upholding guidelines for hypertension screening and measurement.

Funding

National Natural Science Foundation of China, Swiss Agency for Development and Cooperation, Doctoral Fund Project of Inner Mongolia Medical University, China Postdoctoral Science Foundation.

The Role of Confidence and Knowledge in Intentions to (Not) Seek Care for Hypertension: Evidence From a National Survey

BACKGROUND

Hypertension (high blood pressure) is a modifiable risk factor for cardiovascular disease. However, patients may lack confidence in their understanding of what constitutes normal/healthy blood pressure, potentially affecting intentions to seek necessary care. The American Heart Association defines normal/healthy blood pressure as <120/80 mm Hg, with a 130/80 mm Hg threshold for hypertension diagnosis.

METHODS

Our US sample (N = 6,592) included 1,342 adults with hypertension alone and 795 with hypertension and relevant comorbidities (heart disease, kidney disease, and diabetes mellitus). We assessed confidence in understanding blood pressure numbers, knowledge of thresholds for normal/healthy blood pressure ("normal or healthy blood pressure is below . . ."; counting 120-130/80 mm Hg as correct), and intentions to seek care for randomly assigned blood pressure readings of 142/91 (stage 2 hypertension), 132/69 (stage 1 hypertension), or 118/78 mm Hg (normal/healthy blood pressure).

RESULTS

Among nonhypertensive participants, 55% expressed confidence in their understanding of blood pressure numbers, but only 36% knew the upper thresholds for normal/healthy blood pressure. Among participants with hypertension alone, 78% were confident while 47% were knowledgeable. Among participants with hypertension and comorbidities, 81% were confident and 40% were knowledgeable. Participants who were confident (v. not) were more likely to express intentions to act on stage 2 hypertension readings but less likely to express intentions to act on stage 1 readings, even after adjustment for knowledge, hypertension diagnosis, and sociodemographics.

LIMITATIONS

Confidence, knowledge, and intentions were each measured with 1 question.

CONCLUSIONS

Independent of knowledge, confidence was associated with greater willingness to act on stage 2 hypertension readings but reduced willingness to act on stage 1 hypertension readings. Interventions aiming to improve hypertension care-seeking behavior should improve confidence in accurate knowledge.

HIGHLIGHTS

Hypertension or high blood pressure is a major risk factor for heart disease.Most Americans do not know that normal/healthy blood pressure levels are ≤120/80 mm Hg, yet they are confident that they know this information.Inappropriate confidence in understanding of blood pressure numbers undermines intentions to seek care for stage 1 hypertension blood pressure readings.

Effects of an educational program using a virtual social network on nurses' knowledge and performance of blood pressure measurement: a randomized controlled trial

BACKGROUND

Hypertension diagnosis, treatment, and follow-up depend on accurate blood pressure measurement; however, inaccurate measurement techniques are common among healthcare providers. To improve professional performance, continuous education is necessary. Distance education through virtual social network can be used as it is easy to use and accessible.

METHODS

This study adopted a randomized controlled trial design and was conducted at two hospitals in Mansoura, Egypt. The subjects were selected from two hospitals using Stratified random sampling method in proportion to the total number of nurses. Seventy nurses were included in this study and were randomly divided into the intervention (n = 35) and control (n = 35) groups using block randomization. Data were gathered before and after intervention using a blood pressure measurement knowledge questionnaire and a blood pressure measurement observation checklist. The blood pressure measurement error (the difference between the BP determined by each observer and the reference BP) was calculated for the randomly selected recordings in both groups. The intervention group received 24 blood pressure measurement education sessions using WhatsApp, while the control group received only routine education using traditional lecture.

RESULTS

No statistically significant differences in pretest knowledge scores, performance scores, and range of error were found between both groups, whereas, after intervention, knowledge scores were higher in the intervention group than those in the control group (p < 0.001). The range of error of systolic and diastolic blood pressure values significantly reduced after the intervention in the intervention group, and the posttest performance scores were higher than the pretest performance scores; however, the difference was not statistically significant.

CONCLUSIONS

The blood pressure measurement education program via WhatsApp was effective in increasing nurses' knowledge and reducing the range of error; however, a multimodal approach may be required to improve performance scores.

TRIAL REGISTRATION

Prospectively registered with ClinicalTrials.gov on 09/03/2021; registration number NCT04789642.

Clinic, Home, and Kiosk Blood Pressure Measurements for Diagnosing Hypertension: a Randomized Diagnostic Study

BACKGROUND

The US Preventive Services Task Force recommends blood pressure (BP) measurements using 24-h ambulatory monitoring (ABPM) or home BP monitoring before making a new hypertension diagnosis.

OBJECTIVE

Compare clinic-, home-, and kiosk-based BP measurement to ABPM for diagnosing hypertension.

DESIGN, SETTING, AND PARTICIPANTS

Diagnostic study in 12 Washington State primary care centers, with participants aged 18-85 years without diagnosed hypertension or prescribed antihypertensive medications, with elevated BP in clinic.

INTERVENTIONS

Randomization into one of three diagnostic regimens: (1) clinic (usual care follow-up BPs); (2) home (duplicate BPs twice daily for 5 days); or (3) kiosk (triplicate BPs on 3 days). All participants completed ABPM at 3 weeks.

MAIN MEASURES

Primary outcome was difference between ABPM daytime and clinic, home, and kiosk mean systolic BP. Differences in diastolic BP, sensitivity, and specificity were secondary outcomes.

KEY RESULTS

Five hundred ten participants (mean age 58.7 years, 80.2% white) with 434 (85.1%) included in primary analyses. Compared to daytime ABPM, adjusted mean differences in systolic BP were clinic (-4.7mmHg [95% confidence interval -7.3, -2.2]; P<.001); home (-0.1mmHg [-1.6, 1.5];P=.92); and kiosk (9.5mmHg [7.5, 11.6];P<.001). Differences for diastolic BP were clinic (-7.2mmHg [-8.8, -5.5]; P<.001); home (-0.4mmHg [-1.4, 0.7];P=.52); and kiosk (5.0mmHg [3.8, 6.2]; P<.001). Sensitivities for clinic, home, and kiosk compared to ABPM were 31.1% (95% confidence interval, 22.9, 40.6), 82.2% (73.8, 88.4), and 96.0% (90.0, 98.5), and specificities 79.5% (64.0, 89.4), 53.3% (38.9, 67.2), and 28.2% (16.4, 44.1), respectively.

LIMITATIONS

Single health care organization and limited race/ethnicity representation.

CONCLUSIONS

Compared to ABPM, mean BP was significantly lower for clinic, significantly higher for kiosk, and without significant differences for home. Clinic BP measurements had low sensitivity for detecting hypertension. Findings support utility of home BP monitoring for making a new diagnosis of hypertension.

TRIAL REGISTRATION

ClinicalTrials.gov NCT03130257 https://clinicaltrials.gov/ct2/show/NCT03130257.

Staff knowledge of orthostatic vital signs measurement

PURPOSE

To determine the nursing staff's knowledge of the proper procedure for measuring orthostatic vital signs.

METHODS

The Knowledge of Orthostatic Vital Signs Survey was sent via email to direct staff on 31 patient-care units in a large hospital system.

RESULTS

Eighty percent of the participants were RNs and 12% were unlicensed assistants. Survey results showed that many respondents did not know how to properly size the cuff and were uncertain about the timing of measurements with position changes. Fifty-seven percent of respondents did not correctly identify abnormal findings with regard to the systolic BP, but 80% were aware of the diastolic BP drop in orthostatic hypotension.

CONCLUSION

This survey identified gaps in the staff's knowledge about the proper procedure for measuring orthostatic vital signs.

Automated Office Blood Pressure and the Impact of Attendance and Rest on Diagnostic Accuracy

BACKGROUND

Automated office blood pressure (AOBP) using 3-5 measurements taken with an oscillometric device with or without an attendant in the room may decrease "white coat" effect. We evaluated the impact of the presence or absence of the attendant and rest on BP and diagnosis of hypertension.

METHODS

We randomly assigned 133 adults aged 18-85 with high BP at baseline (≥140/90 mm Hg), no hypertensive diagnosis and no antihypertensive medications to either attended AOBP first, unattended second, or unattended AOBP first, attended second. Outcomes included within-person BP difference for attended vs. unattended measurements; 5 vs. 15 minutes of rest; and the diagnostic performance of AOBP compared with daytime automated blood pressure measurement (ABPM).

RESULTS

We found no significant differences between attended and unattended AOBP (mean difference attended - unattended [95% confidence interval, CI], systolic 0.14 mm Hg [-0.78, 1.06]; diastolic 0.16 mm Hg [-0.45, 0.78]) or by rest time (mean difference 15 - 5 minutes [95% CI], systolic -0.45 mm Hg [-1.36, 0.47]; diastolic 0.61 mm Hg [-1.23, 0.003]). AOBP was lower than mean daytime ABPM, regardless of attendance or rest (after 5 minutes rest systolic -3.6 and diastolic -2.55 mm Hg, P = 0.001 for both comparisons). Using daytime ABPM of ≥135/85 mm Hg as the diagnostic threshold, AOBP sensitivity and specificity after 5 minutes of rest were 71.0% and 54.1%, respectively.

CONCLUSIONS

The presence or absence of a clinic attendant during AOBP measurement and the amount of rest time before AOBP measurements had no effects on BP. AOBP measurements have low sensitivity and specificity for making a new diagnosis of hypertension.

Validation of an iCare Health Monitor smartphone application in the assessment of vital signs among stroke survivors in a poor-resource country

Background

Frequent and accurate monitoring of blood pressure (BP) is a vital part of stroke management. There is therefore the need for availability of simple, portable and accurate devices for monitoring BP at any point in time.

Objective

To determine the validity and reliability of the iCare Health Monitor (iCHM) smartphone application in the measurement of BP, heart rate (HR) and respiratory rate (RR) amongst stroke survivors in Anambra State.

Methods

This was a cross-sectional survey involving 86 stroke survivors (64.0% males; mean age = 65.23 ± 12.10 years) consecutively recruited from three conveniently selected centres in Anambra State. BP, PR and RR were assessed using both the standardised methods and iCHM. The parameters were reassessed with the iCHM after few minutes. Convergent validity and test-retest reliability of the iCHM were determined using Pearson product moment correlation and intra-class correlation coefficient respectively at an alpha level of 0.05.

Results

The convergent validity of the iCHM was excellent in measuring systolic BP (SBP) ( r = 0.96; p < 0.01), diastolic BP (DBP) ( r = 0.93; p < 0.01), HR ( r = 0.96; p < 0.01) but moderate in measuring RR ( r = 0.74; p < 0.01). The test-retest reliability of the iCHM was excellent in assessing SBP (ICC = 0.95; p < 0.01), DBP (ICC = 0.94; p < 0.01) and HR (ICC = 0.92; p < 0.01) but poor in assessing RR (ICC = 0.35; p = 0.03). Also, the iCHM displayed clinically insignificant bias.

Conclusion

The iCHM is a valid and reliable tool for assessing BP and HR (but not RR) among stroke survivors. Its use is therefore recommended especially in poor-resource countries where gadgets for assessing BP and PR might not easily be affordable and available.

Diagnosis and treatment of arterial hypertension 2021

In the last 4 years, several evidence-based, national, and international guidelines on the management of arterial hypertension have been published, mostly with concordant recommendations, but in some aspects with discordant opinions. This in-depth review takes these guidelines into account but also addresses several new data of interest. Although being somewhat obvious and simple, accurate blood pressure (BP) measurement with validated devices is the cornerstone of the diagnosis of hypertension, but out-of-office BP measurements are of crucial importance as well. Simplified antihypertensive drug treatment such as single-pill combinations enhances the adherence to medication and speeds up the process of getting into the BP target range, a goal not so far adequately respected. Recommended (single-pill) combination therapy includes diuretics as part of the first step of antihypertensive therapy, and updated analysis does not provide evidence to exclude diuretics from this first step because of the recently discussed potential risk of increasing cancer incidence. Target BP goals need to be individualized, according to comorbidities, hypertension-mediated organ damage, coexistence of cardiovascular risk factors (including age), frailty in the elderly, and individual tolerability. There are also concordant recommendations in the guidelines that an office BP between 120 and 140 mm Hg systolic and between 70 and 80 mm Hg diastolic should be achieved. The BP target of Kidney Disease: Improving Global Outcomes for hypertensive patients with chronic kidney disease are not applicable for clinical practice because they heavily rely on 1 study that used a study-specific, nontransferable BP measurement technique and excluded the most common cause of chronic kidney disease, namely, diabetic nephropathy. Actual data even from a prospective trial on chronotherapy have to be disregarded, and antihypertensive medication should not be routinely dosed at bedtime. Rigorously conducted trials justify the revival of renal denervation for treatment of (at least, but not only) uncontrolled and treatment-resistant hypertension.

Knowledge, perception and practice of Québec nurses for ambulatory and clinic blood pressure measurement methods: are we there yet?

BACKGROUND

Guidelines regarding blood pressure measurement (BPM) methods, namely home (HBPM), ambulatory (ABPM), office (OBPM) and automated (AOBP) are published by Hypertension Canada and rely on accurate measurement technique. Nurses commonly perform BPM but their knowledge, perception and practice considering all methods is understudied. This study is the first to establish the picture of Québec nurses working in primary care settings concerning the four BPM methods.

METHODS

All nurses licensed to practice in primary care in Québec were targeted in our survey. Data were collected using a validated and pretested investigator-initiated questionnaire in English and French. A personalized e-mail invitation, and two reminders, including a link to a secured platform was sent in December 2019. A certificate of ethics was issued by UQTR.

RESULTS

A total of 453 nurses participated in the study. Median age was 40 ± 11 years, and 92% were women. The overall score on BPM methods knowledge was slightly below 50% (46% ± 23). The perception was mostly positive, with an overall score above 50% (73% ± 8). In practice, HBPM was recommended by 47% of nurses, and ABPM by 18%. Although AOBP is the preferred method in Canada, only 25% of the nurses use it, including the 57% that use an oscillometric device and 11% that use manual auscultation.

CONCLUSION

Nurses working in primary care play a central role in BPM. Our results highlight that overall knowledge and practice are suboptimal. Resources should, therefore, be allocated to ensure that initial training and continuing education are addressed.