Blood pressure changes associated with tilting in normotensive subjects: Differences in response pattern as measured by oscillometry and auscultation

1991 ◽  
Vol 1 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Michael B. Sidery ◽  
Ian A. Macdonald
Keyword(s):  
Blood Pressure ◽  
Response Pattern ◽  
Normotensive Subjects ◽  
Pressure Changes

scholarly journals Daily Life Blood Pressure Changes Are Steeper in Hypertensive Than in Normotensive Subjects

Hypertension ◽  
2003 ◽  
Vol 42 (3) ◽  
pp. 277-282 ◽  
Author(s):  
Giuseppe Mancia ◽  
Gianfranco Parati ◽  
Paolo Castiglioni ◽  
Roberto Tordi ◽  
Elena Tortorici ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Daily Life ◽  
Normotensive Subjects ◽  
Pressure Changes

Increase in Muscle Nerve Sympathetic Activity in Humans after Food Intake

1994 ◽  
Vol 86 (2) ◽  
pp. 159-167 ◽  
Author(s):  
JAN Fagius ◽  
Christian Berne
Keyword(s):  
Blood Pressure ◽  
Food Intake ◽  
Sympathetic Activity ◽  
Insulin Response ◽  
Mixed Meal ◽  
Muscle Nerve ◽  
Intermediate Response ◽  
Normotensive Subjects ◽  
Pressure Changes ◽  
Effect Of Glucose

1. The influence of the intake of different nutrients on muscle nerve sympathetic activity was studied by use of microneurography. Muscle nerve sympathetic activity, heart rate, blood pressure and the insulin response were monitored for 90 min in 39 healthy, lean, normotensive subjects (mean age 26 years) who received 100 g of glucose in 300 ml of water (n = 8), 50 g of fat in 250 ml of water (n = 8), 100 g of lean meat corresponding to 40 g of protein with 250 ml of water (n = 8), 300 ml of water only (n = 7) or a mixed meal (1750 kJ) (n = 8). 2. All types of food evoked an increase in muscle nerve sympathetic activity whereas water caused no change. The increase in muscle nerve sympathetic activity was already significant at 15–30 min and was still strongly significant at 90 min. The effect of glucose was significantly greater than that of fat and protein; the mixed meal caused an intermediate response. Blood pressure changes were minor. 3. It is concluded that a sustained increase in muscle nerve sympathetic activity occurs regularly after any type of food intake. A rise in muscle nerve sympathetic activity takes place in the absence of an insulin response, and insulin contributes to only part of the increase after ingestion of glucose or a mixed meal. The muscle nerve sympathetic activity response is thought to be of importance for the redistribution of blood to the splanchnic region after a meal. Lack of this response is likely to explain postprandial hypotension in autonomic failure.

Heart Rate Signal Decomposition

2000 ◽  
Vol 39 (02) ◽  
pp. 200-203
Author(s):  
H. Mizuta ◽  
K. Yana
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Pressure Change ◽  
Normal Subjects ◽  
Signal Decomposition ◽  
Large Individual ◽  
Heart Rate Fluctuations ◽  
Type Pattern ◽  
Signal Cancellation ◽  
Pressure Changes

Abstract:This paper proposes a method for decomposing heart rate fluctuations into background, respiratory and blood pressure oriented fluctuations. A signal cancellation scheme using the adaptive RLS algorithm has been introduced for canceling respiration and blood pressure oriented changes in the heart rate fluctuations. The computer simulation confirmed the validity of the proposed method. Then, heart rate fluctuations, instantaneous lung volume and blood pressure changes are simultaneously recorded from eight normal subjects aged 20-24 years. It was shown that after signal decomposition, the power spectrum of the heart rate showed a consistent monotonic 1/fa type pattern. The proposed method enables a clear interpretation of heart rate spectrum removing uncertain large individual variations due to the respiration and blood pressure change.

scholarly journals Clinical Epidemiology of Systolic and Diastolic Orthostatic Hypotension in Patients on Peritoneal Dialysis

2021 ◽  
Vol 10 (14) ◽  
pp. 3075
Author(s):  
Claudia Torino ◽  
Rocco Tripepi ◽  
Maria Carmela Versace ◽  
Antonio Vilasi ◽  
Giovanni Tripepi ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Peritoneal Dialysis ◽  
Orthostatic Hypotension ◽  
Clinical Epidemiology ◽  
Hemodialysis Patients ◽  
Excess Death ◽  
Death Risk ◽  
Standardized Protocol ◽  
Pressure Changes ◽  
The Impact

Blood pressure changes upon standing reflect a hemodynamic response, which depends on the baroreflex system and euvolemia. Dysautonomia and fluctuations in blood volume are hallmarks in kidney failure requiring replacement therapy. Orthostatic hypotension has been associated with mortality in hemodialysis patients, but neither this relationship nor the impact of changes in blood pressure has been tested in patients on peritoneal dialysis. We investigated both these relationships in a cohort of 137 PD patients. The response to orthostasis was assessed according to a standardized protocol. Twenty-five patients (18%) had systolic orthostatic hypotension, and 17 patients (12%) had diastolic hypotension. The magnitude of systolic and diastolic BP changes was inversely related to the value of the corresponding supine BP component (r = −0.16, p = 0.056 (systolic) and r = −0.25, p = 0.003 (diastolic), respectively). Orthostatic changes in diastolic, but not in systolic, BP were linearly related to the death risk (HR (1 mmHg reduction): 1.04, 95% CI 1.01–1.07, p = 0.006), and this was also true for CV death (HR: 1.08, 95% CI 1.03–1.12, p = 0.001). The strength of this association was not affected by further data adjustment (p ≤ 0.05). These findings suggest that independent of the formal diagnosis of orthostatic hypotension, even minor orthostatic reductions in diastolic BP bear an excess death risk in this population.

PS 02-65 ASSOCIATION BETWEEN POSTPRANDIAL AND SLEEPING SYSTEMIC BLOOD PRESSURE CHANGES IN THE NON-DIABETIC ELDERLY

2016 ◽  
Vol 34 (Supplement 1) ◽  
pp. e121
Author(s):  
Fernando Garcia ◽  
Beatriz Fidale ◽  
Sebastião Ferreira-Filho
Keyword(s):  
Blood Pressure ◽  
Systemic Blood Pressure ◽  
Systemic Blood ◽  
Pressure Changes
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