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Journal of Clinical Hypertension... Nov 2022Blood pressure and pulse pressure (PP) had their own characteristics in the elderly population. This cross-sectional study including 5030 elderly participants was...
Blood pressure and pulse pressure (PP) had their own characteristics in the elderly population. This cross-sectional study including 5030 elderly participants was conducted to describe the distribution of blood pressure and wide PP in the elderly population and find influencing factors of wide PP. Wide PP was defined as PP equal to or more than 65 mmHg, and was classified three types as low systolic blood pressure (SBP) and low diastolic blood pressure (DBP) (LSLD), high SBP and low DBP (HSLD), and high SBP and high DBP (HSHD). Using multivariate logistic regression models to analyze the associations of demographic factors, health-related factors and lifestyle factors with different wide PP types. The associations of lifestyles with wide PP by gender were estimated by subgroup analyses. Among 5030 elderly participants, 2727 (54.2%) participants had wide PP. Logistic regression models showed older age (OR = 2.48, 95%CI: 2.14-2.88), female (OR = 1.31, 95%CI: 1.07-1.60), not married (OR = 1.26, 95%CI: 1.07-1.49), having chronic diseases (OR = 1.28, 95%CI: 1.09-1.50), current alcohol drinker (OR = 1.29, 95%CI: 1.11-1.50) were positively associated, and higher body height (OR = .78, 95%CI: .62-.99), higher education level (OR = .60, 95%CI: .43-.82), current smoker (OR = .79, 95%CI: .64-.97) were negatively associated with wide PP. Among three different types of wide PP including LSLD, HSLD, HSHD, these factors had different effects. Subgroup analyses found that only among male, current smoker was negatively associated and current alcohol drinker was positively associated with wide PP.
Topics: Male; Female; Aged; Humans; Blood Pressure; Cross-Sectional Studies; Hypertension; Asian People; Hypotension; China; Risk Factors
PubMed: 36259250
DOI: 10.1111/jch.14582 -
Annals of African Medicine 2022Obesity and diabetes mellitus are two major factors related with the risk of metabolic syndrome and cardiovascular diseases. Co-existing hypertension with diabetes...
BACKGROUND
Obesity and diabetes mellitus are two major factors related with the risk of metabolic syndrome and cardiovascular diseases. Co-existing hypertension with diabetes mellitus and obesity has poor prognosis for cardiovascular diseases. Ambulatory blood pressure monitoring (ABPM) correlates more closely to target organ damage than clinic blood pressure.
OBJECTIVES
The objective of the study is to assess and compare ABPM pattern among obese and nonobese diabetes mellitus patients.
MATERIALS AND METHODS
A cross-sectional study was conducted among fifty obese and fifty nonobese diabetic patients who were classified based on their body mass index as per the WHO criterion. The clinical blood pressure measurements were measured on each subject using a digital sphygmomanometer, and 24 h ABPM was done and ABPM parameters such as dipping pattern, 24 h systolic blood pressure (SBP), diastolic blood pressure (DBP), Mean SBP, mean DBP, diurnal variability of SBP, DBP, Mean arterial pressure, pulse pressure, SD systole (Standard Deviation systole), SD diastole, white coat hypertension was derived and compared between the two groups.
RESULTS
Around 37 (74%) obese and 18 (36%) nonobese showed non dipping pattern in SBP and 28 (66.7%) of obese and 14 (33.3%) of nonobese showed a nondipping pattern in DBP and was found to be statistically significant (P < 0.001). On comparison between normotensive obese and normotensive nonobese, it was found that SBP non dipping pattern18 (67%) versus 9 (29%) and DBP nondipping pattern 12 (45%) versus 5 (16%) was statistically significant with P = 0.004, 0.016, respectively.
CONCLUSION
Obese diabetes mellitus subjects had altered ABPM parameters and increased prevalence of nondipping status. In addition, obese diabetic patients who did not give prior history of hypertension were also found to have higher nondipping SBP and DBP patterns.
Topics: Blood Pressure; Blood Pressure Monitoring, Ambulatory; Cardiovascular Diseases; Circadian Rhythm; Cross-Sectional Studies; Diabetes Mellitus; Humans; Hypertension; Obesity; Risk Factors
PubMed: 36204912
DOI: 10.4103/aam.aam_65_21 -
American Journal of Hypertension Apr 2021High blood pressure (BP) is a strong modifiable risk factor for cardiovascular disease (CVD). Longitudinal BP patterns themselves may reflect the burden of risk and...
High blood pressure (BP) is a strong modifiable risk factor for cardiovascular disease (CVD). Longitudinal BP patterns themselves may reflect the burden of risk and vascular damage due to prolonged cumulative exposure to high BP levels. Current studies have begun to characterize BP patterns as a trajectory over an individual's lifetime. These BP trajectories take into account the absolute BP levels as well as the slope of BP changes throughout the lifetime thus incorporating longitudinal BP patterns into a single metric. Methodologic issues that need to be considered when examining BP trajectories include individual-level vs. population-level group-based modeling, use of distinct but complementary BP metrics (systolic, diastolic, mean arterial, mid, and pulse pressure), and potential for measurement errors related to varied settings, devices, and number of readings utilized. There appear to be very specific developmental periods during which divergent BP trajectories may emerge, specifically adolescence, the pregnancy period, and older adulthood. Lifetime BP trajectories are impacted by both individual-level and community-level factors and have been associated with incident hypertension, multimorbidity (CVD, renal disease, cognitive impairment), and overall life expectancy. Key unanswered questions remain around the additive predictive value of BP trajectories, intergenerational contributions to BP patterns (in utero BP exposure), and potential genetic drivers of BP patterns. The next phase in understanding BP trajectories needs to focus on how best to incorporate this knowledge into clinical care to reduce the burden of hypertensive-related outcomes and improve health equity.
Topics: Blood Pressure; Cardiovascular Diseases; Heart Disease Risk Factors; Humans; Hypertension
PubMed: 33821941
DOI: 10.1093/ajh/hpab009 -
Experimental Physiology Aug 2021What is the central question of this study? There is a paradoxical reduction in augmentation index during lower-body dynamic (LBD) exercise in the face of an increase in...
NEW FINDINGS
What is the central question of this study? There is a paradoxical reduction in augmentation index during lower-body dynamic (LBD) exercise in the face of an increase in central pressure. To determine causality, the amplitudes of forward and backward pressure waves were assessed separately using wave separation analysis. What is the main finding and its importance? Reflection magnitude decreased during LBD exercise in healthy young adults and was attributable to an increased forward pressure wave amplitude and decreased backward pressure wave amplitude. This vasoactive response might limit the adverse effects of wave reflection during LBD exercise, optimizing ventricular-arterial interactions.
ABSTRACT
Acute lower-body dynamic (LBD) exercise decreases surrogate measures of wave reflection, such as the augmentation index. However, the augmentation index is influenced by the combined effects of wave reflection timing, magnitude and other confounding factors external to wave reflection, which make it difficult to discern the origin of changes in surrogate measures. The relative contributions of forward (Pf) and backward (Pb) pressure wave amplitudes to central pressure can be determined by wave separation analysis. Reflection magnitude (RM = Pb/Pf) and the timing of apparent wave reflection return can also be determined. We tested the hypothesis that acute LBD exercise decreases RM and reflected wave transit time (RWTT). Applanation tonometry was used to record radial artery pressure waveforms in 25 adults (24 ± 4 years of age) at baseline and during light-, moderate- and vigorous-intensity exercise. Wave separation analysis was conducted offline using a personalized physiological flow wave to determine Pf, Pb, RM and RWTT. The RM decreased during all intensities of exercise compared with baseline (all P < 0.001; baseline, 43 ± 5%; light, 33 ± 6%; moderate, 23 ± 7%; vigorous, 17 ± 5%). The reduction in RM was attributable to the combined effect of increased Pf and decreased Pb during exercise. The RWTT decreased during all intensities of exercise compared with baseline (all P < 0.04; baseline, 156 ± 17 ms; light, 144 ± 15 ms; moderate, 129 ± 16 ms; vigorous, 121 ± 17 ms). Lastly, in a stepwise multilinear regression, Pf, but not Pb and RWTT, contributed to increased central pulse pressure during LBD exercise. These data show that wave reflection decreased and that central pulse pressure is most influenced by Pf during LBD exercise.
Topics: Arteries; Blood Pressure; Exercise; Heart Rate; Heart Ventricles; Humans; Young Adult
PubMed: 33999464
DOI: 10.1113/EP089581 -
Hypertension Research : Official... Jul 2023Hot water bathing has been demonstrated to be an effective way to improve people's cardiovascular health in many studies. This study focused on seasonal physiological...
Hot water bathing has been demonstrated to be an effective way to improve people's cardiovascular health in many studies. This study focused on seasonal physiological changes to provide suggestions on bathing methods based on season for hot spring bathing. Volunteers were recruited to the program of hot spring bathing at 38-40 °C in New Taipei City. Cardiovascular function, blood oxygen, and ear temperature were observed. There were five assessments for each participant during the study process: baseline, bathing for 20 min and 2 cycles *20 (2*20) min, resting for 20 min and 2*20 min after bathing, respectively. Lower blood pressure (p < 0.001), pulse pressure (p < 0.001), left ventricular dP/dt Max (p < 0.001), and cardiac output (p < 0.05) were identified after bathing then rested for 2*20 min in four seasons, compared to baseline by paired T test. However, in multivariate linear regression model, potential risk for bathing in summer was assumed by higher heart rate (+28.4%, p < 0.001), cardiac output (+54.9%, p < 0.001) and left ventricular dP/dt Max (+27.6%, p < 0.05) during bathing at 2*20 min in summer. Potential risk for bathing in winter was postulated by blood pressure lowering (cSBP -10.0%; cDBP -22.1%, p < 0.001) during bathing at 2*20 min in winter. Hot spring bathing is shown to potentially improve cardiovascular function via reducing cardiac workload and vasodilation effects. Prolonged hot spring bathing in summer is not suggested due to significantly increased cardiac stress. In winter, prominent drop of blood pressure should be concerned. We demonstrated the study enrollment, the hot-spring contents and location, and physiological changes of general trends or seasonal variations, which may indicate potential benefits and risks during and after bathing. (Abbreviations: BP, blood pressure; PP, pulse pressure; LV, left ventricular; CO, cardiac output; HR, heart rate; cSBP, central systolic blood pressure; cDBP, central diastolic blood pressure).
Topics: Humans; Seasons; Balneology; Blood Pressure; Cardiovascular System; Baths
PubMed: 36991066
DOI: 10.1038/s41440-023-01248-4 -
Scientific Reports Nov 2023Associations between cerebrovascular disease and impaired autonomic function and cerebrovascular reactivity have led to increased interest in variability of heart rate...
Associations between cerebrovascular disease and impaired autonomic function and cerebrovascular reactivity have led to increased interest in variability of heart rate (HRV) and blood pressure (BPV) following stroke. In this study, beat-to-beat pulse rate variability (PRV) and BPV were measured in clinically stable stroke patients (6 ischemic, 2 hemorrhagic) at least one year after their last cerebrovascular event. Beat-to-beat blood pressure (BP) measurements were collected from subjects while resting in the sitting position for one hour. Compared with healthy controls, stroke patients exhibited significantly greater time-domain (standard deviation, coefficient of variation, average real variability) and normalized high-frequency BPV (all p < 0.05). Stroke patients also exhibited lower LF:HF ratios than control subjects (p = 0.003). No significant differences were observed in PRV between the two groups, suggesting that BPV may be a more sensitive biomarker of cerebrovascular function in long-term post-stroke patients. Given a paucity of existing literature investigating beat-to-beat BPV in clinically stable post-stroke patients long (> 1 year) after their cerebrovascular events, this pilot study can help inform future studies investigating the mechanisms and effects of BPV in stroke. Elucidating this physiology may facilitate long-term patient monitoring and pharmacological management to mitigate the risk for recurrent stroke.
Topics: Humans; Blood Pressure; Heart Rate; Pilot Projects; Stroke; Monitoring, Physiologic
PubMed: 37935766
DOI: 10.1038/s41598-023-45479-4 -
European Journal of Clinical... Jan 2023Hypertension is a risk factor for the development of cardiovascular disease. Whether serial blood pressure (BP) measurements are more closely associated with subclinical...
BACKGROUND
Hypertension is a risk factor for the development of cardiovascular disease. Whether serial blood pressure (BP) measurements are more closely associated with subclinical left ventricular (LV) remodelling and better predict risk of cardiovascular events over individual BP measurements are not known.
METHODS
We assessed systolic BP, diastolic BP and pulse pressure at several time points during adulthood in 1333 women and 1211 men participating in the Akershus Cardiac Examination 1950 Study. We defined serial BP measurements as the sum of averaged BPs from adjacent consecutive visits indexed to total exposure time between measurements. We assessed the associations between serial and individual BP measurements and (1) LV structure, function and volumes and (2) incident myocardial infarction, ischemic stroke, heart failure and cardiovascular death.
RESULTS
All indices of higher serial BP measurements were associated with increased indexed LV mass, and the associations were stronger than those of individual BP measurements. Serial diastolic BP pressure was strongly and inversely associated with LV systolic function, while higher serial systolic BP was primarily associated with higher LV volumes. Both serial systolic (incidence rate ratio [IRR] 1.10, 95% CI 1.03 to 1.17) and diastolic BPs (IRR 1.14, 95% CI 1.02 to 1.27) were associated with increased incidence of clinical events.
CONCLUSION
In healthy community dwellers without established cardiovascular disease, different serial BP indices associate strongly with LV remodelling and cardiovascular outcomes. Whether the use of serial BP indices for guiding treatment is superior to individual measurements should be explored in additional prospective studies.
Topics: Male; Female; Humans; Adult; Ventricular Remodeling; Blood Pressure; Prospective Studies; Systole; Ventricular Function, Left; Myocardial Infarction
PubMed: 36120822
DOI: 10.1111/eci.13876 -
Physiological Reports May 2023Isometric exercise training (IET) is an effective intervention for the management of resting blood pressure (BP). However, the effects of IET on arterial stiffness... (Randomized Controlled Trial)
Randomized Controlled Trial
Isometric exercise training (IET) is an effective intervention for the management of resting blood pressure (BP). However, the effects of IET on arterial stiffness remain largely unknown. Eighteen unmedicated physically inactive participants were recruited. Participants were randomly allocated in a cross-over design to 4 weeks of home-based wall squat IET and control period, separated by a 3-week washout period. Continuous beat-to-beat hemodynamics, including early and late systolic (sBP 1 and sBP 2, respectively) and diastolic blood pressure (dBP) were recorded for a period of 5 min and waveforms were extracted and analyzed to acquire the augmentation index (AIx) as a measure of arterial stiffness. sBP 1 (-7.7 ± 12.8 mmHg, p = 0.024), sBP 2 (-5.9 ± 9.9 mmHg, p = 0.042) and dBP (-4.4 ± 7.2 mmHg, p = 0.037) all significantly decreased following IET compared to the control period. Importantly, there was a significant reduction in AIx following IET (-6.6 ± 14.5%, p = 0.02) compared to the control period. There were also adjacent significant reductions in total peripheral resistance (-140.7 ± 65.8 dynes·cm-5, p = 0.042) and pulse pressure (-3.8 ± 4.2, p = 0.003) compared to the control period. This study demonstrates an improvement in arterial stiffness following a short-term IET intervention. These findings have important clinical implications regarding cardiovascular risk. Mechanistically, these results suggest that reductions in resting BP following IET are induced via favorable vascular adaptations, although the intricate details of such adaptations are not yet clear.
Topics: Humans; Hypertension; Vascular Stiffness; Cross-Over Studies; Exercise; Blood Pressure
PubMed: 37208968
DOI: 10.14814/phy2.15690 -
Alzheimer's Research & Therapy May 2024Optimal blood pressure (BP) levels to reduce the long-term risk of cognitive decline remains controversial. We aimed to investigate the association between BP and...
BACKGROUND
Optimal blood pressure (BP) levels to reduce the long-term risk of cognitive decline remains controversial. We aimed to investigate the association between BP and anti-hypertensive treatment status with cognitive decline in older adults.
METHODS
This study used data from the China Health and Retirement Longitudinal Study. Cognitive function was assessed at year 2011, 2013, 2015, and 2018. Global cognitive Z-score was calculated as the average score of episodic memory and mental intactness. BP were measured at the first and second wave. Pulse pressure (PP) was calculated as systolic BP (SBP) minus diastolic BP. Cumulative BP was calculated as the area under the curve using BP measurements from 2011 to 2013. Linear mixed models were used to assess the longitudinal association between BP-related measurements and cognitive decline.
RESULTS
We included 11,671 participants (47.3% men and mean age 58.6 years). Individual with BP > 140/90 mm Hg or taking anti-hypertensive medication were independently associated with accelerated cognitive decline (β=-0.014, 95% CI: -0.020 to -0.007). Individuals with anti-hypertensive medication use, but with controlled SBP to less than 120 mm Hg did not have a significantly increased risk of cognitive decline compared with normotension (β=-0.003, 95% CI: -0.021 to 0.014). Individuals on anti-hypertensive treatment with PP of more than 70 mm Hg had a significantly higher risk of cognitive decline (β=-0.033, 95% CI: -0.045 to -0.020). Regardless of anti-hypertensive treatment status, both elevated baseline and cumulative SBP and PP were found to be independently associated with accelerated cognitive decline.
CONCLUSIONS
Cumulatively elevated SBP, PP and uncontrolled BP were associated with subsequent cognitive decline. Effectively controlling BP with anti-hypertensive treatment may be able to preserve cognitive decline in older adults.
Topics: Humans; Male; Female; Cognitive Dysfunction; Longitudinal Studies; China; Middle Aged; Antihypertensive Agents; Blood Pressure; Aged; Hypertension; Independent Living
PubMed: 38730505
DOI: 10.1186/s13195-024-01467-y -
Journal of Clinical Hypertension... Sep 2021Suboptimal blood pressure (BP) control in patients with type 2 diabetes is associated with adverse micro- and macrovascular complications. This study aimed to...
Suboptimal blood pressure (BP) control in patients with type 2 diabetes is associated with adverse micro- and macrovascular complications. This study aimed to investigate the predictors of uncontrolled hypertension in an Iranian population with type 2 diabetes. This is a cross-sectional study of 2612 patients with type 2 diabetes, including 944 patients with hypertension. Controlled and uncontrolled hypertension were assessed. Multivariate logistic regression modeling was used to determined independent predictors of uncontrolled hypertension. Of 2612 patients with type 2 diabetes, 944 (36.1%) patients had hypertension. Of all patients with hypertension, 580 (61.4%) were still on monotherapy. Uncontrolled hypertension was detected in 536 participants (56.8%). Patients with uncontrolled hypertension had significantly higher body mass index (BMI) (29.8±4.8 vs. 28.6±4.6), waist circumference (99.11±10.95 vs. 96.68±10.92), pulse pressure (67.3±17.3 vs. 48.4±10.7), total cholesterol (177.1±45.5 vs. 164.3±40.5), non-HDL cholesterol (133.0±43.5 vs. 120.1±38.7), triglycerides (175.7±80.3 vs. 157.4±76.7), and Atherogenic Index of Plasma (AIP) (0.57±0.23 vs. 0.52±0.24) (p < .05 for all of them) compared to patients with controlled hypertension. Multivariate logistic regression analysis revealed that uncontrolled hypertension was significantly associated with BMI (p = .001), pulse pressure (p = .001), total cholesterol (p = .006), and non-HDL cholesterol (p = .009). In patients with triglycerides levels > 200 mg/dl non-HDL cholesterol had a significant correlation with uncontrolled hypertension (OR = 4.635, CI95%:1.781-12.064, p = .002). In conclusion, BMI, pulse pressure, total cholesterol, and non-HDL cholesterol are significant predictors of uncontrolled hypertension in patients with type 2 diabetes. Also, ineffective monotherapy, medical inertia and patients' non-compliance were other contributors to the uncontrolled hypertension.
Topics: Blood Pressure; Body Mass Index; Cholesterol, HDL; Cross-Sectional Studies; Diabetes Mellitus, Type 2; Humans; Hypertension; Iran; Triglycerides
PubMed: 34418281
DOI: 10.1111/jch.14352