Ambulatory arterial blood pressure monitoring in patients before and after thyroidectomy

Bacground/Aim. Increased values of thyroid hormones in the clinical syndrome of hyperthyreosis affect blood pressure values and its circadial variation. The aim of this study was to define the influence of hyperthyreosis on the values and circadial variations of arterial blood pressure, as well as to investigate the effect of thyroid surgery on blood pressure values. Methods. We compared the 24-hour averages of systolic and diastolic blood pressure, their variations and their reduction during the night between 20 female patients with hyperthyroidism and hypertension de novo and 20 healthy females. We compared the values of 24-hour ambulatory monitoring performed before the surgery with the values gathered two weeks after the surgery. Results. The 24-hour average systolic and diastolic blood pressure values were higher in the patients with hyperthyroidism than in the control group (p < 0.001). In the group of patients, the variations in blood pressure were significantly higher than they were in the group of healthy people (p < 0.001). The amplitude of the nocturnal reduction of blood pressure was also significantly lower in the patients with hyperthyroid status and hypertension, in comparison to the healthy persons (p < 0.001). Two weeks after the surgery, a significant reduction of blood pressure values (both for systolic and diastolic) appeared. Conclusion. The patients with hyperthyroidism- caused hypertension had higher systolic and diastolic blood pressure, higher variations in blood pressure and lower nocturnal reduction of blood pressure than healthy subjects. Thyroid surgery, as a control of thyroid function, optimised blood pressure very rapidly.

Download Full-text

Assessment of the Antihypertensive Effect of Atenolol with 24 H Ambulatory Monitoring of Blood Pressure

Clinical Science ◽

10.1042/cs057387s ◽

1979 ◽

Vol 57 (s5) ◽

pp. 387s-389s ◽

Cited By ~ 15

Author(s):

J. S. Floras ◽

P. Fox ◽

M. O. Hassan ◽

J. V. Jones ◽

P. Sleight ◽

...

Keyword(s):

Blood Pressure ◽

Essential Hypertension ◽

Arterial Blood Pressure ◽

Antihypertensive Effect ◽

Ambulatory Monitoring ◽

Single Daily Dose ◽

Pressure Measurements ◽

Arterial Blood ◽

Blood Pressure Study ◽

Daily Dose

1. Twenty-four hour intra-arterial blood pressure measurements and electrocardiograms were obtained from 12 subjects with untreated essential hypertension. 2. The patients kept records of their activity, paying particular attention to times of retiring to bed, and times of waking in the morning. 3. All subjects were treated with a single daily dose of atenolol (50 to 200 mg) for between 2 and 9 months, and then underwent a second 24 h blood pressure study. 4. Arterial blood pressure was lowered significantly throughout the 24 h period with a single daily dose of atenolol.

Download Full-text

A Simple Non-physiological Artifact Filter for Invasive Arterial Blood Pressure Monitoring: a Study of 1852 Trauma ICU Patients

2006 International Conference of the IEEE Engineering in Medicine and Biology Society ◽

10.1109/iembs.2006.4397677 ◽

2006 ◽

Author(s):

Hanqing Cao ◽

Patrick Norris ◽

Asli Ozdas ◽

Judy Jenkins ◽

John A. Morris

Keyword(s):

Blood Pressure ◽

Arterial Blood Pressure ◽

Blood Pressure Monitoring ◽

Pressure Monitoring ◽

Icu Patients ◽

Arterial Blood

Download Full-text

Effect of the Ace Inhibitor Ceronapril on Cerebral Blood flow in Hypertensive Patients

Annals of Pharmacotherapy ◽

10.1177/106002809603000601 ◽

1996 ◽

Vol 30 (6) ◽

pp. 578-582 ◽

Cited By ~ 5

Author(s):

Neal R Cutler ◽

John J Sramek ◽

Azucena Luna ◽

Ismael Mena ◽

Eric P Brass ◽

...

Keyword(s):

Blood Pressure ◽

Blood Flow ◽

Cerebral Blood Flow ◽

Diastolic Blood Pressure ◽

Arterial Blood Pressure ◽

Mean Arterial Blood Pressure ◽

Enzyme Inhibitor ◽

Blood Pressure Response ◽

Combined Therapy ◽

Arterial Blood

Objective To assess the effect of the angiotensin-converting enzyme inhibitor ceronapril on cerebral blood flow (CBF) in patients with moderate hypertension. Design Patients received chlorthalidone 25 mg for 4 weeks, and if diastolic blood pressure remained in the range of 100–115 mm Hg, they were given titrated doses of ceronapril (10–40 mg/d based on blood pressure response) in addition to chlorthalidone for 9 weeks. Setting Outpatient research clinic. Subjects Eligible patients had moderate essential hypertension (diastolic blood pressure 100–115 mm Hg) assessed when the patients were receiving no medications. Thirteen patients were entered into the study; 1 withdrew for reasons unrelated to the study drug. Twelve patients (11 men, 1 woman; mean age 52 y) completed the study. Intervention Ceronapril, given with chlorthalidone. Main Outcome Measures CBF measurements were taken at the start and end of ceronapril therapy using intravenous 133Xe; blood pressures were determined weekly. Results Mean arterial blood pressure decreased from 130 ± 4 to 120 ±7 mm Hg after 4 weeks of chlorthalidone administration, and fell further to 108 ± 8 mm Hg after an additional 9 weeks of combined chlorthalidone-ceronapril therapy (p < 0.05). CBF fell from 44 ± 15 to 34 ± 5 mL/min/100 g during the 9 weeks of combined therapy (p = 0.05). No adverse effects consistent with decreased CBF were observed. The decrease in CBF was not linearly correlated with the change in systemic blood pressure, but was strongly correlated (r = –0.937; p < 0.001) with the initial CBF. Conclusions The decrease in mean arterial blood pressure was not associated with a decrease in CBF. Patients with high CBF may be predisposed to a decrease in CBF when treated with ceronapril and chlorthalidone.

Download Full-text

EFFECT OF DIFFERENT OCCLUSION PRESSURE ON PECULIARITIES OF MUSCLE BLOOD FLOW

Baltic Journal of Sport and Health Sciences ◽

10.33607/bjshs.v1i108.3 ◽

2018 ◽

Vol 1 (108) ◽

pp. 2-8

Author(s):

Kęstutis Bunevičius ◽

Albinas Grunovas ◽

Jonas Poderys

Keyword(s):

Blood Pressure ◽

Blood Flow ◽

Arterial Blood Pressure ◽

Arterial Blood Flow ◽

Control Group ◽

Reactive Hyperaemia ◽

Occlusion Pressure ◽

Arterial Blood ◽

Flow Intensity ◽

Blood Flow Intensity

Background. Occlusion pressure intensity influences the blood flow intensity. Immediately after the cuff pressure is released, reactive hyperaemia occurs. Increased blood flow and nutritive delivery are critical for an anabolic stimulus, such as insulin. The aim of study was to find which occlusion pressure was optimal to increase the highest level of post occlusion reactive hyperaemia. Methods. Participants were randomly assigned into one of the four conditions (n = 12 per group): control group without blood flow restriction, experimental groups with 120; 200 or 300 mmHg occlusion pressure. We used venous occlusion plethysmography and arterial blood pressure measurements. Results. After the onset of 120 and 200 mm Hg pressure occlusion, the blood flow intensity significantly decreased. Occlusion induced hyperaemia increased arterial blood flow intensity 134 ± 11.2% (p < .05) in the group with 120 mmHg, in the group with 200 mmHg it increased 267 ± 10.5% (p < .05), in the group with 300 mmHg it increased 233 ± 10.9% (p < .05). Applied 300 mmHg occlusion from the 12 minute diastolic and systolic arterial blood pressure decreased statistically significantly. Conclusions. Occlusion manoeuvre impacted the vascular vasodilatation, but the peak blood flow registered after occlusion did not relate to applied occlusion pressure. The pressure of 200 mmHg is optimal to impact the high level of vasodilatation. Longer than 12 min 300 mmHg could not be recommended due to the steep decrease of systolic and diastolic blood pressures.

Download Full-text