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Barochiner J, Martínez R, Aparicio LS. Novel Indices of Home Blood Pressure Variability and Hypertension-Mediated Organ Damage in Treated Hypertensive Patients. High Blood Press Cardiovasc Prev 2021; 28:365-372. [PMID: 33881750 PMCID: PMC8058582 DOI: 10.1007/s40292-021-00453-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/13/2021] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION Although multiple home blood pressure variability (HBPV) indices have been proposed, the superiority of one over another is not clear in treated hypertensives. AIM We evaluated the correlation between different indices of HBPV and hypertension-mediated organ damage (HMOD) in this population and determined predictors of greater HBPV. METHODS We included adult treated hypertensives who performed an HBP monitoring (duplicate sitting BP readings in the morning, afternoon, and evening for 4 days, Omron HEM-705CP-II), laboratory measurements, transthoracic echocardiogram and carotid-femoral pulse wave velocity. We selected HBPV indices from three different calculation approaches: coefficient of variation (CoV), difference between maximum and minimum BP (MMD), and morning BP increase (MI), and evaluated their correlation with left ventricular mass index, relative wall thickness (RWT), ejection fraction, arterial stiffness and estimated glomerular filtration rate through a correlation matrix. For those variability indices significantly associated with HMOD, we constructed multiple linear regression models to determine independent predictors of HBPV. RESULTS We included 204 patients, mean age 67.2 (± 13.8) years, 64% female. CoV and MMD for systolic BP showed the greatest correlation with HMOD. Factors independently associated both with CoV and MMD were: older age (b = 0.07; 95% CI 0.04-0.07; p < 0.001 and b = 0.4; 95% CI 0.2-0.5; p < 0.001, respectively), history of stroke (b = 3.6; 95% CI 0.9-6.4; p = 0.01 and b = 25.7; 95% CI 10.1-41.2; p = 0.001, respectively), and body mass index [b = - 0.1; 95% CI - 0.2 to (- 0.02); p = 0.01 and b = - 0.5; 95% CI - 0.9 to (- 0.1); p = 0.01, respectively]. CONCLUSION CoV and MMD showed the greatest association with HMOD in treated hypertensives. Older age, history of stroke and lower body mass index were easy-to-detect predictors.
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Affiliation(s)
- Jessica Barochiner
- Hypertension Section, Internal Medicine Department, Hospital Italiano de Buenos Aires, Tte. Gral. Juan Domingo Perón 4190, C1199ABB, Buenos Aires, Argentina. .,Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), UE de triple dependencia CONICET-Instituto Universitario del Hospital Italiano (IUHI)-Hospital Italiano (HIBA), Buenos Aires, Argentina.
| | - Rocío Martínez
- Hypertension Section, Internal Medicine Department, Hospital Italiano de Buenos Aires, Tte. Gral. Juan Domingo Perón 4190, C1199ABB, Buenos Aires, Argentina.,Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), UE de triple dependencia CONICET-Instituto Universitario del Hospital Italiano (IUHI)-Hospital Italiano (HIBA), Buenos Aires, Argentina
| | - Lucas S Aparicio
- Hypertension Section, Internal Medicine Department, Hospital Italiano de Buenos Aires, Tte. Gral. Juan Domingo Perón 4190, C1199ABB, Buenos Aires, Argentina
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Mazza A, Townsend DM, Schiavon L, Torin G, Lenti S, Rossetti C, Rigatelli G, Rubello D. Long-term effect of the perindopril/indapamide/amlodipine single-pill combination on left ventricular hypertrophy in outpatient hypertensive subjects. Biomed Pharmacother 2019; 120:109539. [PMID: 31627089 PMCID: PMC7104809 DOI: 10.1016/j.biopha.2019.109539] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/25/2019] [Accepted: 10/02/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Most antihypertensive drugs used in monotherapy or in combination therapy reduce the left ventricular mass index (LVMI). However, little is known about the effects on LVMI of a triple fixed-dose combination (TFC) therapy, containing in a single pill an angiotensin-converting enzyme inhibitor (ACEI), a diuretic and a calcium channel blocker (CCB). METHODS In this prospective open-label study, 92 patients with essential hypertension were randomized to treatment with a TFC of perindopril/indapamide/amlodipine at different doses or a triple free combination therapy (FCT) including ACEI/diuretic/CCB. Office blood pressure (BP) measurement, 24 h-ambulatory BP monitoring and echocardiography were performed at baseline and during a 14-month follow-up. The BP variability (BPV) over 24 h was calculated as ± standard deviation of the daytime systolic BP. Differences between office and monitored BP and LVMI were evaluated by ANOVA for repeated measures. RESULTS A significant BP-lowering effect was observed for both treatments. At follow-up, BPV was reduced in both the treatment groups vs. the baseline (14.0±1.5 vs. 17.0±1.8 and 16.2±2.1 vs. 17.6±2.3, respectively), but it was lower in the TFC vs. the FCT group (14.0±1.5 vs. 16.1±2.2, P < 0.05). LVMI was lower in both the treatment groups, but the change was greater for TFC vs. FCT (-8.3±4.9% vs. -2.0 ±2.1%, P < 0.0001). Left ventricular hypertrophy (LVH) regression was greater in the TFC vs. the FCT group (43.5% vs. 30.4%, P < 0.05). CONCLUSIONS Independently of BP values achieved, the antihypertensive TFC therapy was more effective than FCT in LVMI reduction and LVH regression, possibly related to drugs' intrinsic properties and to BPV modulation.
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Affiliation(s)
- Alberto Mazza
- ESH Excellence Hypertension Centre, Internal Medicine Unit, S. Maria della Misericordia General Hospital, AULSS 5 Polesana, Rovigo, Italy.
| | - Danyelle M Townsend
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, USA
| | - Laura Schiavon
- Unit of Internal Medicine, S. Maria della Misericordia Hospital, AULSS 5 Polesana, Rovigo, Italy
| | - Gioia Torin
- ESH Excellence Hypertension Centre, Internal Medicine Unit, S. Maria della Misericordia General Hospital, AULSS 5 Polesana, Rovigo, Italy; Unit of Internal Medicine C, Department of Medicine, University of Verona, Verona, Italy
| | - Salvatore Lenti
- Internal Medicine Unit, S. Donato General Hospital, Arezzo, Italy
| | - Ciro Rossetti
- Unit of Internal Medicine, S. Maria della Misericordia Hospital, AULSS 5 Polesana, Rovigo, Italy
| | - Gianluca Rigatelli
- Interventional Cardiology Unit, Division of Cardiology, S. Maria della Misericordia Hospital, AULSS 5 Polesana, Rovigo, Italy
| | - Domenico Rubello
- Department of Nuclear Medicine, Radiology, Neuroradiology, Medical Physics, Clinical Laboratory, Microbiology, Pathology, Trasfusional Medicine, Santa Maria della Misericordia Hospital, Rovigo, Italy
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Lu X, Jin G, Chen W, Yu X, Ling F. Depiction of Physiological Homeostasis by Self-Coupled System and Its Significance. Front Physiol 2019; 10:1205. [PMID: 31607948 PMCID: PMC6761279 DOI: 10.3389/fphys.2019.01205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/04/2019] [Indexed: 11/16/2022] Open
Abstract
The negative feedback system (NFS) was regarded as the basic unit of regulation of physiological homeostasis for more than 70 years. However, NFS-based depiction possesses some limitations. The self-coupled system (SCS), a non-stop system in which the output of the current moment becomes the input of the next moment, can also be utilized to depict homeostasis. In SCS-based depiction, all of the related regulatory mechanisms of a homeostasis are regarded as an entity. Then, homeostatic dynamics can be expressed by simple mathematical language. A new disease group was revealed and some useful inferences were obtained through mathematical deduction. They were supported by published studies. SCS-based depiction of homeostasis should be a requisite supplement to medical knowledge systems based on NFS.
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Affiliation(s)
- Xia Lu
- Department of Neurosurgery, Chinese PLA General Hospital and Medical School of Chinese PLA, Beijing, China
- Department of Neurosurgery, Xuanwu Hospital Capital Medical University and China International Institution of Neuroscience, Beijing, China
| | - Guantao Jin
- Advanced School of Art and Humanities, Chinese Academy of Art, Hangzhou, China
| | - Wenjin Chen
- Department of Neurosurgery, Xuanwu Hospital Capital Medical University and China International Institution of Neuroscience, Beijing, China
| | - Xinguang Yu
- Department of Neurosurgery, Chinese PLA General Hospital and Medical School of Chinese PLA, Beijing, China
| | - Feng Ling
- Department of Neurosurgery, Xuanwu Hospital Capital Medical University and China International Institution of Neuroscience, Beijing, China
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Chen Z, Liu J, Sun F, Shen Y, Ma L, Zhou Y. Effect of Improving Volume Overload on Home Blood Pressure Variability in Hemodialysis Patients. Ther Apher Dial 2019; 24:163-168. [PMID: 31381247 DOI: 10.1111/1744-9987.13427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/30/2019] [Accepted: 08/01/2019] [Indexed: 12/01/2022]
Abstract
Blood pressure variability is an independent predictor of adverse clinical events in hemodialysis patients. Volume overload is one of the most important factors affecting blood pressure homeostasis. In the present study, we explored the effects of dry weight reduction on home blood pressure variability in volume overload hemodialysis patients. Hemodialysis patients with volume overload had their dry weight gradually decreased under the guidance of bioimpedance methods, which was represented by calf-bioimpedance ratio (Calf-BR). Home blood pressure was measured on waking up and at bedtime for 1 week at baseline and at the end of the two-month study. Coefficient of variation was used to define home blood pressure variability. Thirty-eight hemodialysis patients had their dry weight significantly decreased from 60.7 ± 11.3 to 59.6 ± 10.7 kg (P = 0.003) accompanied with a significant reduction in calf-BR (0.828 ± 0.023 vs. 0.786 ± 0.020, P<0.001). The systolic and diastolic blood pressure decreased significantly. Moreover, the whole-day, morning, and evening systolic blood pressure variability gradually and significantly decreased by the end of the study (5.6 ± 2.1% versus 4.0 ± 1.7%, P<0.001; 7.7 ± 3.5% vs. 6.3 ± 2.7%, P = 0.005; 7.5 ± 2.8% vs. 5.9 ± 2.3%, P = 0.002, respectively). Diastolic blood pressure variability parameters were unchanged. The interdialytic weight gain and the incidence of adverse events were similar throughout the study period. Gradual dry weight reduction by bioimpedance methods improved home blood pressure variability in hemodialysis patients with chronic fluid overload.
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Affiliation(s)
- Ziye Chen
- Capital Medical University, Beijing, China
| | - Jing Liu
- Department of Nephrology, Beijing Tian-Tan Hospital, Capital Medical University, Beijing, China
| | - Fang Sun
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yang Shen
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Lijie Ma
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yilun Zhou
- Department of Nephrology, Beijing Tian-Tan Hospital, Capital Medical University, Beijing, China
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Effects of doxazosin mesylate versus nifedipine on blood pressure variability in hypertensive patients: a randomized crossover study (SIMILAR). Blood Press Monit 2019; 24:252-258. [PMID: 31116151 DOI: 10.1097/mbp.0000000000000388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Blood pressure variability (BPV) is a powerful predictor of end-organ damage, cardiovascular events and mortality independently of the BP level. Calcium channel blockers may offer an advantage over other first-line antihypertensive drugs by preventing increased BPV. But the effect of alpha-receptor blockers on BPV in hypertensive patients is still unclear. METHODS In this crossover trial, 36 hypertensive patients were randomly assigned to two groups, receiving doxazosin mesylate gastrointestinal therapeutic system (GITS) (4 mg/day) or nifedipine GITS (30 mg/day) for 12 weeks, followed by a 2-week washout period then a 12-week crossover phase. At baseline and after 12-week treatment, 24-hour ambulatory BP monitoring was performed. BPV was evaluated through standard deviation (SD), coefficient of variation (CV), and average real variability (ARV) of systolic BP (SBP) and diastolic BP (DBP) during daytime, nighttime and over 24 hours. RESULTS After 12-week treatment, both doxazosin and nifedipine significantly decreased SBP and DBP (P < 0.05), whereas no between-group differences were shown (P>0.05). Systolic BPV (24-hour SD, CV, and ARV; daytime SD; nighttime SD and CV) and diastolic BPV (24-hour SD and ARV) were significantly lowered by nifedipine (P < 0.05); doxazosin resulted in significant reductions of systolic BPV (24-hour SD, CV and ARV; daytime SD; nighttime SD) and diastolic BPV (nighttime SD and CV) (P < 0.05). Doxazosin was revealed to be as effective as nifedipine for reducing BPV (P > 0.05) except for 24-hour SBP ARV. CONCLUSIONS Doxazosin mesylate GITS had similar therapeutic effects on BP, BP SD, and BP CV lowering as nifedipine GITS in patients with mild-to-moderate essential hypertension.
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Nozato S, Yamamoto K, Nozato Y, Akasaka H, Hongyo K, Takeda M, Takami Y, Takeya Y, Sugimoto K, Ito N, Rakugi H. Severity of obstructive sleep apnea is associated with the nocturnal fluctuation of pulse rate, but not with that of blood pressure, in older hypertensive patients receiving calcium channel blockers. Geriatr Gerontol Int 2019; 19:604-610. [PMID: 31044515 DOI: 10.1111/ggi.13673] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/19/2019] [Accepted: 03/29/2019] [Indexed: 11/30/2022]
Abstract
AIM Obstructive sleep apnea (OSA) is associated with increased variability in nocturnal blood pressure (BP). Calcium channel blockers (CCB) are superior to other classes of antihypertensives in decreasing BP variability. We investigated whether OSA severity is associated with nocturnal BP variability in older hypertensive patients treated with CCB. METHODS We measured home systolic and diastolic BP and pulse rate (PR) automatically during sleep at an interval of an hour once a week using an electronic sphygmomanometer in 29 hypertensive patients (aged ≥65 years) receiving CCB. We calculated the coefficient of variation (CV) from four consecutive measurements. All patients underwent a home-based portable sleep study. RESULTS We found no difference in PR, BP or CV of BP between the patients with no-to-mild OSA and with moderate-to-severe OSA, categorized by the respiratory disturbance index (RDI) and 3% oxygen desaturation index (ODI). The CV of PR in patients with moderate-to-severe OSA was higher than the patients with no-to-mild OSA categorized by 3% ODI (P = 0.01). Body mass index was correlated with RDI and 3% ODI (r = 0.56 and 0.43, respectively). The CV of BP did not correlate to RDI or 3% ODI. The CV of PR was positively correlated both with RDI and with 3% ODI (r = 0.41 and 0.42, respectively). CONCLUSIONS The severity of OSA was associated with PR variability, but not with BP variability, in older patients receiving CCB. Our results suggest the need for future studies to determine whether CCB can suppress the influence of OSA on BP fluctuation during sleep. Geriatr Gerontol Int 2019; 19: 604-610.
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Affiliation(s)
- Satoko Nozato
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koichi Yamamoto
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoichi Nozato
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroshi Akasaka
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kazuhiro Hongyo
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masao Takeda
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoichi Takami
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yasushi Takeya
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ken Sugimoto
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Norihisa Ito
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiromi Rakugi
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
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Chen Z, Sun F, Shen Y, Ma L, Liu J, Zhou Y. Impact of Dialysate Sodium Concentration Lowering on Home Blood Pressure Variability in Hemodialysis Patients. Ther Apher Dial 2018; 23:153-159. [PMID: 30381891 DOI: 10.1111/1744-9987.12771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 10/28/2018] [Accepted: 10/30/2018] [Indexed: 02/05/2023]
Abstract
Blood pressure variability is an independent risk factor for mortality and cardiovascular events in hemodialysis patients. Dialysate sodium concentration may not only have effects on blood pressure but also on blood pressure variability. We investigated whether dialysate sodium concentration lowering could decrease home blood pressure variability in hemodialysis patients. Forty-three hemodialysis patients at their dry weight assessed by bioimpedance methods with pre-dialysis serum sodium >136 mmol/L were recruited. Firstly, patients underwent a 1-month standard dialysis with dialysate sodium concentration of 138 mmol/L, and then the dialysate sodium concentration was decreased to 136 mmol/L for 8 weeks. Home blood pressure was assessed on waking up and at bedtime for 1 week. Coefficient of variation was used to define home blood pressure variability. After the intervention, whole-day systolic blood pressure variability decreased from 5.7 ± 2.6% to 4.3 ± 1.7% and evening systolic blood pressure variability decreased from 7.9 ± 4.1% to 6.2 ± 3.1%. Morning systolic blood pressure variability had a reduction from 7.8 ± 2.4% to 5.9 ± 3.3% but did not achieve statistical significance (P = 0.077). Whole-day, morning and evening systolic blood pressure were decreased significantly. Less changes were observed in diastolic blood pressure parameters. Interdialytic weight gain mildly but significantly decreased. Volume parameters, dietary sodium intake and incidence of adverse events were similar throughout the study period. Lowering dialysate sodium concentration could improve home blood pressure variability among hemodialysis patients who had achieved their dry weight.
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Affiliation(s)
- Ziye Chen
- Capital Medical University, Beijing, China
| | - Fang Sun
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yang Shen
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Lijie Ma
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Jing Liu
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yilun Zhou
- Department of Nephrology, Beijing Tian-Tan Hospital, Capital Medical University, Beijing, China
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