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Davis TME, Tan E, Davis WA. Prevalence and prognostic significance of cardiac autonomic neuropathy in community-based people with type 2 diabetes: the Fremantle Diabetes Study Phase II. Cardiovasc Diabetol 2024; 23:102. [PMID: 38500197 PMCID: PMC10949593 DOI: 10.1186/s12933-024-02185-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/01/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND There is a paucity of contemporary data on the prevalence and prognostic significance of cardiac autonomic neuropathy (CAN) from community-based cohorts with type 2 diabetes assessed using gold standard methods. The aim of this study was to assess these aspects of CAN in the longitudinal observational Fremantle Diabetes Study Phase II (FDS2). METHODS FDS2 participants were screened at baseline using standardised cardiovascular reflex tests (CARTs) of heart rate variation during deep breathing, Valsalva manoeuvre and standing. CAN (no/possible/definite) was assessed from the number of abnormal CARTs. Multinomial regression identified independent associates of CAN status. Cox proportional hazards modelling determined independent baseline predictors of incident heart failure (HF) and ischaemic heart disease (IHD), and all-cause mortality. RESULTS Of 1254 participants assessed for CAN, 86 (6.9%) were outside CART age reference ranges and valid CART data were unavailable for 338 (27.0%). Of the remaining 830 (mean age 62.3 years, 55.3% males, median diabetes duration 7.3 years), 51.0%, 33.7% and 15.3% had no, possible or definite CAN, respectively. Independent associates of definite CAN (longer diabetes duration, higher body mass index and resting pulse rate, antidepressant and antihypertensive therapies, albuminuria, distal sensory polyneuropathy, prior HF) were consistent with those reported previously. In Kaplan-Meier analysis, definite CAN was associated with a lower likelihood of incident IHD and HF versus no/possible CAN (P < 0.001) and there was a graded increase in all-cause mortality risk from no CAN to possible and definite CAN (P < 0.001). When CAN category was added to the most parsimonious models, it was not a significant independent predictor of IHD (P ≥ 0.851) or HF (P ≥ 0.342). Possible CAN (hazard ratio (95% CI) 1.47 (1.01, 2.14), P = 0.046) and definite CAN (2.42 (1.60, 3.67), P < 0.001) increased the risk of all-cause mortality versus no CAN. CONCLUSIONS Routine screening for CAN in type 2 diabetes has limited clinical but some prognostic value.
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Affiliation(s)
- Timothy M E Davis
- Medical School, Fremantle Hospital, University of Western Australia, PO Box 480, Fremantle, WA, 6959, Australia.
- Department of Endocrinology and Diabetes, Fiona Stanley and Fremantle Hospitals, Murdoch, WA, Australia.
- Australian Centre for Accelerating Diabetes Innovations (ACADI), The University of Melbourne, Melbourne, VIC, Australia.
| | - Eva Tan
- Medical School, Fremantle Hospital, University of Western Australia, PO Box 480, Fremantle, WA, 6959, Australia
| | - Wendy A Davis
- Medical School, Fremantle Hospital, University of Western Australia, PO Box 480, Fremantle, WA, 6959, Australia
- Australian Centre for Accelerating Diabetes Innovations (ACADI), The University of Melbourne, Melbourne, VIC, Australia
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Cheng HJ, Sun ZJ, Lu FH, Yang YC, Chang CJ, Wu JS. Functional status associated with postural dizziness, but not postural hypotension, in older adults: a community-based study. BMC Geriatr 2023; 23:383. [PMID: 37344784 DOI: 10.1186/s12877-023-04100-z] [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: 11/14/2022] [Accepted: 06/09/2023] [Indexed: 06/23/2023] Open
Abstract
BACKGROUND Functional status, postural dizziness (PD), and postural hypotension (PH) were important issues in older adults. Only one study on the relationship for the three of them in female was without adjusting some important associated factors. This study was intended to investigate the association of PD and PH with functional status in older people of both genders. METHODS Based on a stratified randomized cluster sampling, 1361 subjects ≥ 65 years in the community were recruited from Tainan City, Taiwan, from 2000 to 2001. PH was defined as a decrease in systolic/diastolic blood pressure of ≥ 20/10 mm Hg after 1 or 2 min of standing. PD was defined by a positive response to dizziness-like symptoms after standing up from a supine position. Functional status included the activities of daily living (ADLs) and instrumental activities of daily living (IADLs). RESULTS After adjusting other variables, ADL disability (OR: 1.84, 95% CI: 1.35-2.51) and IADL disability (OR: 1.62, 95% CI: 1.21-2.17) were associated with PD, but not PH. In male and female subgroups, ADL disability (male OR: 1.70, 95% CI: 1.08-2.67; female OR 1.96, 95% CI: 1.26-3.07) was associated with PD. In male, IADL disability was associated with PD (OR: 2.32, 95% CI: 1.36-3.95). CONCLUSIONS Impaired functional status, shown using ADLs or IADLs, was positively associated with PD, but not PH in older adults ≥ 65 years. Clinically, it may be important to evaluate PD in older adults with ADL or IADL disability.
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Affiliation(s)
- Hsiang-Ju Cheng
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Zih-Jie Sun
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Family Medicine, National Cheng Kung University Hospital Dou-Liou Branch, College of Medicine, National Cheng Kung University, Yunlin, Taiwan
- Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Feng-Hwa Lu
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Ching Yang
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Jen Chang
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Family Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chia-Yi, Taiwan
| | - Jin-Shang Wu
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
- Department of Family Medicine, National Cheng Kung University Hospital Dou-Liou Branch, College of Medicine, National Cheng Kung University, Yunlin, Taiwan.
- Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Davenport A. Why is Intradialytic Hypotension the Commonest Complication of Outpatient Dialysis Treatments? Kidney Int Rep 2023; 8:405-418. [PMID: 36938081 PMCID: PMC10014354 DOI: 10.1016/j.ekir.2022.10.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/30/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022] Open
Abstract
Intradialytic hypotension (IDH) is the most frequent complication of hemodialysis (HD) treatments with a frequency of 10% to 12% for patients with chronic kidney disease attending for outpatient treatments and is associated with both temporary ischemic stress to vital organs, including the heart and brain, and increased patient mortality. Although there have been many different definitions of IDH over the years, an absolute nadir systolic blood pressure (SBP) has the strongest association with patient outcomes. The unifying pathophysiology is one of reduced effective blood volume, resulting in lower plasma tonicity, and if this cannot be adequately compensated for by activation of neurohumeral systems, then arteriolar tone and blood pressure fall. The risk factors for developing IDH are numerous, ranging from patient-related factors, including age and comorbidity with reduced cardiac reserve, to patient compliance with dietary and lifestyle advice, to reactions with the extracorporeal circuit and medications, choice of dialysate composition and temperature, setting of postdialysis target weight, ultrafiltration rate, and profiling. Advances in dialysis machine technology by providing real time estimates of the effective circulating volume and adjusting dialysate composition to maintain vascular tonicity are being developed, but currently require more sophisticated biofeedback loops to be clinically effective in preventing IDH. While awaiting advances in artificial intelligence, the clinician continues to rely on patient education to limit interdialytic weight gains, frequent assessment of the postdialysis target weight, adjusting dialysate composition and temperature, introducing convective therapies to increase thermal losses, and altering dialysis session duration and frequency to reduce ultrafiltration rate requirements.
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Affiliation(s)
- Andrew Davenport
- Department of Renal Medicine, Royal Free Hospital, Faculty of Medical Sciences, University College London, London, UK
- Correspondence: Andrew Davenport, UCL Department of Nephrology, Royal Free Hospital, University College London, Rowland Hill Street, London NW3 2PF, UK.
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Zhang Y, Zhao Y, Wei C, Li Y, Aslam H, Feng Q, Huang Q, Zheng Y, Lv F, Hao W, Li J. Association of common medical comorbidities with early renal damage in the Chinese tropics with essential hypertension. BMC Nephrol 2021; 22:366. [PMID: 34736407 PMCID: PMC8570023 DOI: 10.1186/s12882-021-02576-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 10/25/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Urine albumin/creatinine ratio (UACR) is an important marker of early renal damage (ERD) caused by hypertension. Recent studies showed that blood pressure was a significant inverse association with temperature and climate. The purposes of our study were sought to explore the association of common medical comorbidities with ERD, and find independent risk factors to ERD in Chinese tropics with essential hypertension. METHODS From January 2018 to December 2019, we assessed UACR in a total of 599 hypertensive Chinese Hainan patients. We defined ERD as a UACR between 30 mg/g and 300 mg/g. We analysed differences between qualitative variables using the chi-squared (χ2) test. We calculated correlations between UACR and age, hypertension duration (HD), systolic blood pressure (SBP), and diastolic blood pressure (DBP) using the Spearman's rho test. To determine the odds ratio (OR), we evaluated binary logistic regression models. RESULTS Among the 599 patients, 281 (46.9%) were found to have ERD. ERD and factors related to sex, body mass index (BMI), and SBP did not differ significantly (all, p>0.05). Our main findings showed that age, HD, and DBP were associated with ERD (p<0.01, respectively). Furthermore, age ≥ 65 years, HD ≥10 years, DBP ≥ 90 mmHg, SBP ≥ 160 mmHg, and diabetes differed significantly according to ERD status (p < 0.05, respectively). In multivariate analysis using stepwise regression, age (OR = 1.468), DBP (OR = 1.853), and diabetes (OR = 2.031) were significant independent predictors of ERD. The area under the receiver operating characteristic (ROC) curve was 0.677, and the sensitivity and specificity of the optimal cut-off value were 44.5 and 81.1%, respectively. CONCLUSIONS Common medical comorbidities are associated with ERD; age, DBP, and diabetes are independent risk factors for ERD in patients with essential hypertension who live in the Chinese tropics. Early monitoring of the UACR, as well as control of blood glucose and DBP, can effectively delay ERD.
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Affiliation(s)
- Yuzhuo Zhang
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Ying Zhao
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Chenglu Wei
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yongrong Li
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Hira Aslam
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Qingmin Feng
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Qing Huang
- Marketing Department, Sanofi (Hangzhou), Haikou, China
| | - Yu Zheng
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Feifen Lv
- First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Wei Hao
- Cardiovascular Department, Xi'an Hospital of Traditional Chinese Medicine, No.69, Fengcheng 8th Road, Weiyang District, Xi'an City, 710021, Shaanxi Province, China
| | - Jike Li
- First Affiliated Hospital of Hainan Medical University, Haikou, China. .,Cardiovascular Department, Xi'an Hospital of Traditional Chinese Medicine, No.69, Fengcheng 8th Road, Weiyang District, Xi'an City, 710021, Shaanxi Province, China.
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Aytaş G, Kazancıoğlu R, Elçioğlu ÖC, Gürsu M, Artan AS, Yabacı A, Soysal P, Bilgi K, Özçelik S. Comparative Evaluation of Orthostatic Hypotension in Patients with Diabetic Nephropathy. Kidney Blood Press Res 2021; 46:574-580. [PMID: 34284392 DOI: 10.1159/000517316] [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: 10/19/2020] [Accepted: 05/05/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Orthostatic hypotension (OH) affects 5-20% of the population. Our study investigates the presence of OH in diabetic nephropathy (DNP) patients and the factors affecting OH in comparison with nondiabetic chronic kidney disease (NDCKD) patients. METHOD Patients presented to the nephrology clinic, and those who consented were included in the study. DNP was defined by kidney biopsy and/or clinical criteria. NDCKD patients of the same sex, age, and eGFR were matched to DNP patients. Demographic parameters and medications were obtained from the records. OH was determined by Mayo clinic criteria. The same researcher used an electronic device to measure blood pressure (BP). All samples were taken and analyzed the same day for biochemical and hematologic parameters and albuminuria. RESULTS 112 (51 F, 61 M, mean age: 62.56 ± 9.35 years) DNP and 94 (40 F, 54 M, mean age: 62.23 ± 10.08 years) NDCKD patients were included. There was no significant difference between DNP and NDCKD groups in terms of OH prevalence (70.5 vs. 61.7%, p = 0.181). Male patients had significantly higher OH prevalence than female patients (74.7 vs. 60.0%, p = 0.026). There was no significant difference in change in systolic BP between the groups (24.00 [10.00-32.00] mm Hg vs. 24.00 [13.75-30.25] mm Hg, p = 0.797), but the change in diastolic BP was significantly higher in the DNP group (8.00 [2.00-13.00] mm Hg vs. 6.00 [2.00-9.00] mm Hg, p = 0.025). In the DNP group, patients with OH had significantly higher uric acid levels than those without OH (7.18 ± 1.55 vs. 6.36 ± 1.65 mg/dL, p = 0.017). And, 73.7% of patients on calcium channel blockers developed OH (p = 0.015), and OH developed in 80.6% of 36 patients on alpha-blockers (p = 0.049). CONCLUSION OH prevalence is very high in CKD, and etiology of CKD does not have a statistically significant effect on the frequency of OH, despite a difference that could be meaningful clinically. Therefore, patients with CKD are checked for OH, with or without concurrent diabetes mellitus. Evaluation of postural BP changes should be a part of nephrology practice.
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Affiliation(s)
- Gamze Aytaş
- Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Rümeyza Kazancıoğlu
- Division of Nephrology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Ömer C Elçioğlu
- Division of Nephrology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Meltem Gürsu
- Division of Nephrology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - A Serra Artan
- Division of Nephrology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Ayşegül Yabacı
- Department of Biostatistics, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Pinar Soysal
- Department of Geriatrics, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Kadir Bilgi
- Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Semra Özçelik
- Department of Medical Education, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
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Li F, Wei RB, Wang Y, Su TY, Li P, Huang MJ, Chen XM. Nomogram prediction model for renal anaemia in IgA nephropathy patients. Open Med (Wars) 2021; 16:718-727. [PMID: 34013043 PMCID: PMC8111477 DOI: 10.1515/med-2021-0284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 03/18/2021] [Accepted: 04/07/2021] [Indexed: 12/29/2022] Open
Abstract
In this study, we focused on the influencing factors of renal anaemia in patients with IgA nephropathy and constructed a nomogram model. We divided 462 patients with IgA nephropathy diagnosed by renal biopsy into anaemic and non-anaemic groups. Then, the influencing factors of renal anaemia in patients with IgA nephropathy were analysed by least absolute shrinkage and selection operator (LASSO) regression and multivariable logistic regression, and a nomogram model for predicting renal anaemia was established. Eventually, nine variables were obtained, which are easy to apply clinically. The areas under the receiver operating characteristic (ROC) curve and precision-recall (PR) curve reached 0.835 and 0.676, respectively, and the C-index reached 0.848. The calibration plot showed that the model had good discrimination, accuracy, and diagnostic efficacy. In addition, the C-index of the model following internal validation reached 0.823. Decision curve analysis suggested that the model had a certain degree of clinical significance. This new nomogram model of renal anaemia combines the basic information, laboratory findings, and renal biopsy results of patients with IgA nephropathy, providing important guidance for predicting and clinically intervening in renal anaemia.
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Affiliation(s)
- Fei Li
- School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin 300073, People's Republic of China
| | - Ri-Bao Wei
- School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin 300073, People's Republic of China.,Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, No. 28 Fuxing Road, Haidian District, Beijing 100853, People's Republic of China
| | - Yang Wang
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, No. 28 Fuxing Road, Haidian District, Beijing 100853, People's Republic of China
| | - Ting-Yu Su
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, No. 28 Fuxing Road, Haidian District, Beijing 100853, People's Republic of China
| | - Ping Li
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, No. 28 Fuxing Road, Haidian District, Beijing 100853, People's Republic of China
| | - Meng-Jie Huang
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, No. 28 Fuxing Road, Haidian District, Beijing 100853, People's Republic of China
| | - Xiang-Mei Chen
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, No. 28 Fuxing Road, Haidian District, Beijing 100853, People's Republic of China
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Rouabhi M, Durieux J, Al-Kindi S, Cohen JB, Townsend RR, Rahman M. Orthostatic Hypertension and Hypotension and Outcomes in CKD: The CRIC (Chronic Renal Insufficiency Cohort) Study. Kidney Med 2021; 3:206-215.e1. [PMID: 33851116 PMCID: PMC8039407 DOI: 10.1016/j.xkme.2020.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Rationale & Objective There are limited data about the prevalence and prognostic significance of orthostatic hypo- and hypertension in patients with chronic kidney disease. The objective of this study is to determine the prevalence of orthostatic hypo- and hypertension in a cohort of patients with chronic kidney disease and examine their association with clinical outcomes. Study Design Prospective cohort study: Chronic Renal Insufficiency Cohort (CRIC) Study. Setting & Population 7 clinical centers, participants with chronic kidney disease. Exposures Orthostatic hypotension (decline in systolic blood pressure [BP] > 20 mm Hg) and orthostatic hypertension (increase in systolic BP > 20 mm Hg) from seated to standing position. Outcomes Cardiovascular and kidney outcomes and mortality. Analytical Approach Logistic regression was used to determine factors associated with orthostatic hypo- and hypertension; Cox regression was used to examine associations with clinical outcomes. Results Mean age of study population (n = 3,873) was 58.1 ± 11.0 years. There was a wide distribution of change in systolic BP from seated to standing (from −73.3 to +60.0 mm Hg); 180 participants (4.6%) had orthostatic hypotension and 81 (2.1%) had orthostatic hypertension. Diabetes, reduced body mass index, and β-blocker use were independently associated with orthostatic hypotension. Black race and higher body mass index were independently associated with orthostatic hypertension. After a median follow-up of 7.9 years, orthostatic hypotension was independently associated with high risk for cardiovascular (HR, 1.12; 95% CI, 1.03-1.21) but not kidney outcomes or mortality. Orthostatic hypertension was independently associated with high risk for kidney (HR, 1.51; 96% CI, 1.14-1.97) but not cardiovascular outcomes or mortality. Limitations Orthostatic change in BP was ascertained at a single visit. Conclusions Orthostatic hypotension was independently associated with higher risk for cardiovascular outcomes, whereas orthostatic hypertension was associated with higher risk for kidney outcomes. These findings highlight the importance of orthostatic BP measurement in practice and the need for future investigation to understand the mechanisms and potential interventions to minimize the risk associated with orthostatic changes in BP.
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Affiliation(s)
- Mohamed Rouabhi
- School of Medicine, Case Western Reserve University, Cleveland, OH
| | - Jared Durieux
- Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH
| | - Sadeer Al-Kindi
- Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH
| | - Jordana B Cohen
- Renal-Electrolyte and Hypertension Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Raymond R Townsend
- Renal-Electrolyte and Hypertension Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Mahboob Rahman
- School of Medicine, Case Western Reserve University, Cleveland, OH.,Division of Nephrology and Hypertension, University Hospitals Cleveland Medical Center and Louis Stokes Cleveland VA Medical Center, Cleveland, OH
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Li X, Shi R, Meng Q, Zhang X, Chen X. Does arterial stiffness affect orthostatic hypotension among high-altitude Tibetans? Postgrad Med 2020; 133:173-180. [PMID: 32926805 DOI: 10.1080/00325481.2020.1823683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE This study aimed to investigate the association between arterial stiffness and orthostatic hypotension (OH) and orthostatic blood pressure (BP) changes among Tibetans living at high altitude. METHODS A total of 630 high-altitude Tibetans were included (56.53 ± 10.16 years; 246 men). Arterial stiffness was assessed by brachial-ankle pulse wave velocity (baPWV). OH was defined as a decrease in systolic BP (SBP) >20 mmHg or a decrease in diastolic BP (DBP) >10 mmHg after 1 min or 3 min of moving from supine to standing position. RESULTS The prevalence of OH in this population was 6.3%. Compared with subjects without OH, the subjects with OH had a higher baPWV (P < 0.001). Multiple logistical regression found that baPWV was significantly associated with the occurrence of OH (OR 1.147, CI 95% 1.028-1.280, P = 0.014). Spearman correlation analysis showed that baPWV was negatively associated with orthostatic changes in SBP and DBP(r = -0.256, P < 0.001 and r = -0.194, P < 0.001, respectively). Further multiple stepwise linear regression analysis showed that baPWV was independently correlated with orthostatic BP changes (SBP: β = -0.599, P < 0.001; DBP: β = -0.333, P < 0.001). Moreover, increased baPWV was correlated with attenuation of orthostatic heart rate changes. No significant association was observed between hematocrit or hemoglobin concentration and OH. CONCLUSION BaPWV was significantly associated with the occurrence of OH and orthostatic changes in the SBP and DBP, which suggests that arterial stiffness may be a potential mechanism of impaired hemodynamic response to orthostatic challenges among high-altitude Tibetans.
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Affiliation(s)
- Xinran Li
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Rufeng Shi
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qingtao Meng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xin Zhang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xiaoping Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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Bolek H, Bolek EC. Orthostatic hypotension among elderly patients in Italian internal medicine wards: an observational study-comment. Intern Emerg Med 2020; 15:1353-1354. [PMID: 32683640 PMCID: PMC7368638 DOI: 10.1007/s11739-020-02441-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/08/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Hatice Bolek
- Department of Internal Medicine, Hacettepe University Faculty of Medicine, Gevher Nesibe Street, Sıhhiye, 06100, Ankara, Turkey.
| | - Ertugrul Cagri Bolek
- Division of Rheumatology, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
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