Comparison of Two Automatic Devices and the Standard Mercury Sphygmomanometer in Hypertensive Patients

Automated blood pressure (BP) devices are used by many hypertensive patients in Hong Kong, with or without medical advice. At two community clinics, we invited hypertensive patients aged between 40 and 70 years who used such a device to fill in a questionnaire and to have four sets of BP measurements, automated and mercury, at two visits. Of 290 hypertensive patients 120 fulfilled the criteria, and 73 of these agreed to participate. 53 devices measured arm BP, 21 measured forearm BP. The agreement between the mercury sphygmomanometer and the automated devices was poor, with average differences of 9.5 mmHg for systolic and 9.4 mmHg for diastolic and no clear advantage for either site of measurement. As a means of screening for BP >140/90 mmHg the sensitivity of the automated devices was 81% and the specificity was 80%. There were large variations in how often and under what circumstances the devices had been used. One-fifth of the devices had been acquired on medical advice but only 11% of the participants were aware of the three important conditions for operating such devices. Discussion of automated devices, their role and proper use, should now be part of routine hypertensive care.

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A PROSPECTIVE CLINICALTRIAL OF AMLODIPINE IN COMPARISON TO PERINDOPRIL

International Journal of Pharmacy and Pharmaceutical Sciences ◽

10.22159/ijpps.2017v9i12.22270 ◽

2017 ◽

Vol 9 (12) ◽

pp. 268

Author(s):

Suprava Das ◽

Myat Thu Thuwin ◽

Sherly Deborah G. ◽

Lubnashirin . ◽

Mohammad Shahjahan Kabir ◽

...

Keyword(s):

Blood Pressure ◽

Clinical Trial ◽

Systolic Blood Pressure ◽

Supine Position ◽

Antihypertensive Drugs ◽

Antihypertensive Efficacy ◽

Prospective Clinical Trial ◽

Hypertensive Patients ◽

Amlodipine Group ◽

Mercury Sphygmomanometer

Objective: The objective of this research was to perform a prospective clinical trial to compare antihypertensive effects of amlodipine and perindopril in hypertensive patients.Methods: In our study, we compared antihypertensive effects of well tolerated and commonly used antihypertensive drugs, amlodipine and perindopril. There were 81 hypertensive patients of both sexes over 40 y of age without other diseases included in this prospective clinical trial. Forty (40) patients were treated with amlodipine (5 mg/day) and forty-one (41) patients were treated with perindopril (4 mg/day). After one month of taking both drugs, blood pressure was measured in the supine position with a standard mercury sphygmomanometer in the morning.Results: Amlodipine and perindopril groups were having almost similar characteristics at the beginning of the study. There was significantly decrease insystolic blood pressure (sBP) throughout the study period in the amlodipine group (p≤ 0.05) but not in the perindopril group. The efficacy of amlodipine over perindopril on systolic blood pressure and diastolic blood pressure (dBP) was significant (p≤ 0.001 for sBP and p≤ 0.05 for dBP).Conclusion: It may be concluded that the antihypertensive efficacy of amlodipine was superior when compared to perindopril.

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Pseudohypertension in the Elderly

Clinical Science ◽

10.1042/cs055399s ◽

1978 ◽

Vol 55 (s4) ◽

pp. 399s-402s ◽

Cited By ~ 4

Author(s):

J. D. Spence ◽

W. J. Sibbald ◽

R. D. Cape

Keyword(s):

Blood Pressure ◽

Diastolic Pressure ◽

The Elderly ◽

Indirect Measurement ◽

Hypertensive Retinopathy ◽

Hypertensive Patients ◽

Arterial Blood ◽

Blood Pressures ◽

Indirect Blood Pressure ◽

Mercury Sphygmomanometer

1. Direct intra-arterial blood pressure (radial artery) has been compared with indirect blood pressures using a regular sized adult cuff and a thigh cuff, with a mercury sphygmomanometer, in 24 hypertensive patients aged 62–84 years, and in 16 hypertensive patients aged 29–59 years. 2. The patients were studied because they were suspected of having a false elevation of their indirect blood pressure, since they had diastolic pressures over 100 mmHg, without hypertensive retinopathy, cardiac hypertrophy, or nephropathy. 3. Indirect diastolic pressure was falsely elevated by 30 mmHg or more in 12 out of 24 of the subjects over age 60, and in four of the 16 of those under age 60. Pseudohypertension (indirect diastolic > 100 mmHg, direct diastolic < 90 mmHg) was present in 12 subjects over age 60 and 5 under age 60. 4. Errors in indirect measurement of blood pressure are a serious problem, particularly in the elderly. Direct intra-arterial measurement may be useful in the management of hypertension.

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