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Drieghe B, De Buyzere M, Bové T, De Backer T. Interventions for renal artery stenosis: Appraisal of novel physiological insights and procedural techniques to improve clinical outcome. Catheter Cardiovasc Interv 2024; 104:285-299. [PMID: 38837309 DOI: 10.1002/ccd.31117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 05/07/2024] [Accepted: 05/25/2024] [Indexed: 06/07/2024]
Abstract
Randomized clinical trials failed to show additional benefit of renal artery stenting on top of medical therapy. Instead of writing an obituary on renal artery stenting, we try to explain these disappointing results. A transstenotic pressure gradient is needed to reduce renal perfusion and to activate the renin-angiotensin-aldosterone system. In only a minority of patients included in trials, a transstenotic pressure gradient is measured and reported. Like the coronary circulation, integration of physiological lesion assessment will allow to avoid stenting of non-significant lesions and select those patients that are most likely to benefit from renal artery stenting. Renal artery interventions are associated with peri-procedural complications. Contemporary techniques, including radial artery access, no-touch technique to engage the renal ostium and the use of embolic protection devices, will minimize procedural risk. Combining optimal patient selection and meticulous technique might lead to a netto clinical benefit when renal artery stenting is added to optimal medical therapy.
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Affiliation(s)
- Benny Drieghe
- Heart Center, University Hospital Gent, Gent, Belgium
| | | | - Thierry Bové
- Heart Center, University Hospital Gent, Gent, Belgium
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2
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Huang X, Li XL, Zhou H, Li XM. Assessment of Angiography-Based Renal Quantitative Flow Ratio Measurement in Patients with Atherosclerotic Renal Artery Stenosis. Cardiovasc Ther 2024; 2024:4618868. [PMID: 38234331 PMCID: PMC10791475 DOI: 10.1155/2024/4618868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/12/2023] [Accepted: 12/22/2023] [Indexed: 01/19/2024] Open
Abstract
Background Quantitative flow ratio (QFR) is an angiography-based fractional flow reserve measurement without pressure wire or induction of hyperemia. A recent innovation that uses combined geometrical data and hemodynamic boundary conditions to measure QFR from a single angiographic view has shown the potential to measure QFR of the renal artery-renal QFR (rQFR). Objective The aim of this pilot study was to assess the feasibility of rQFR measurement and the contribution of rQFR in selecting patients with atherosclerotic renal artery stenosis (ARAS) undergoing revascularization. Methods This retrospective trial enrolled patients who had ARAS (50-90%) and hypertension. The enrolled patients were treated by optimal antihypertensive medication or revascularization, respectively, and the therapeutic strategies were based on rFFR measurement and/or clinical feature. Results A total of 55 patients underwent rQFR measurement. Among the enrolled patients, 18 underwent optimal antihypertensive medication and 37 underwent revascularization, 19 patients in whom rQFR and rFFR were both assessed. During the 180-day follow-up, 25 patients saw an improvement in their blood pressure among the 37 patients that underwent revascularization. ROC analysis revealed that rQFR had a high diagnostic accuracy for predicting blood pressure improvement (AUCrQFR = 0.932, 95% CI 0.798-0.998). The ideal cut-off value of rQFR for predicting blood pressure improvement after revascularization is ≤0.72 (sensitivity: 72.00%, specificity: 100%). The paired t test and Bland-Altman analyses demonstrated good agreement between rQFR and rFFR (t = 1.887, 95% CI -0.021 to 0.001, 95% limits of agreement: -0.035 to 0.055, p = 0.075). The Spearman correlation test reveals that there was a significant positive correlation between rQFR and rFFR (r = 0.952, 95% CI 0.874 to 0.982, p < 0.001). Conclusion The rQFR has the potential to enhance the ability of angiography to detect functionally significant renal artery stenosis during angiography and to produce results that are comparable to invasive hemodynamic assessment.
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Affiliation(s)
- Xiang Huang
- Department of Cardiology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang 441000, Hubei, China
| | - Xiao-Lan Li
- Department of Cardiology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang 441000, Hubei, China
| | - Heng Zhou
- Department of Cardiology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang 441000, Hubei, China
| | - Xiao-Mei Li
- Department of Cardiology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang 441000, Hubei, China
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Yeşiltaş MA, Koyuncu AO, Ak HY, Haberal İ. Endovascular treatments of atherosclerotic renovascular disease: a narrative review and literature search. J Int Med Res 2023; 51:3000605231206057. [PMID: 37882729 PMCID: PMC10605686 DOI: 10.1177/03000605231206057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 09/20/2023] [Indexed: 10/27/2023] Open
Abstract
In recent years, endovascular treatments have become more common in patients with renal artery stenosis and aneurysm. Although the treatment algorithms are not universally accepted, endovascular therapy can be readily utilized for the appropriate indications in the context of surgical treatment for renovascular diseases. The most important factor to consider is that the correct indication is applied for such treatment. Although the applied procedures are believed to have minimal risk, any complications that occur may result in major problems. Moreover, the pathology that is being treated (e.g., hypertension, high serum creatinine concentration, or low glomerular filtration rate) must be well defined. As stent and balloon technologies continue to be developed, more positive results are expected in the coming years. In the present study, we reviewed the endovascular treatment algorithms for atherosclerotic renovascular disease and performed a narrative review of the current literature.
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Affiliation(s)
- Mehmet Ali Yeşiltaş
- Department of Cardiovascular Surgery, Istanbul Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
| | - Ahmet Ozan Koyuncu
- Department of Cardiovascular Surgery, Istanbul University-Cerrahpasa Cardiology Institute, Istanbul, Turkey
| | - Hulya Yilmaz Ak
- Department of Anesthesiology and Reanimation, Istanbul Dr. Lutfi Kirdar Kartal Training and Research Hospital, Istanbul, Turkey
| | - İsmail Haberal
- Department of Cardiovascular Surgery, Istanbul Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
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Filiberto AC, Miao S, Ren Y, Ozrazgat-Baslanti T, Hensley SE, Jacobs CR, Weaver ML, Upchurch GR, Bihorac A, Cooper M. Bilateral renal artery stenosis impacts postoperative complications after major vascular surgery. Surg Open Sci 2023; 14:17-21. [PMID: 37409074 PMCID: PMC10319299 DOI: 10.1016/j.sopen.2023.06.001] [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: 05/31/2023] [Accepted: 06/04/2023] [Indexed: 07/07/2023] Open
Abstract
Background Incidental atherosclerotic renal artery stenosis (RAS) is common in patients undergoing vascular surgery and has been shown to be associated with postoperative AKI among patients undergoing major non-vascular surgeries. We hypothesized that patients with RAS undergoing major vascular procedures would have a higher incidence of AKI and postoperative complications than those without RAS. Methods A single-center retrospective cohort study of 200 patients who underwent elective open aortic or visceral bypass surgery (100 with postoperative AKI; 100 without AKI) were identified. RAS was then evaluated by review of pre-surgery CTAs with readers blinded to AKI status. RAS was defined as ≥50 % stenosis. Univariate and multivariable logistic regression was used to assess association of unilateral and bilateral RAS with postoperative outcomes. Results 17.4 % (n = 28) of patients had unilateral RAS while 6.2 % (n = 10) of patients had bilateral RAS. Patients with bilateral RAS had similar preadmission creatinine and GFR as compared to unilateral RAS or no RAS. 100 % (n = 10) of patients with bilateral RAS had postoperative AKI compared with 45 % (n = 68) of patients with unilateral or no RAS (p < 0.05). In adjusted logistic regression models, bilateral RAS predicted severe AKI (OR 5.82; CI 1.33, 25.53; p = 0.02), in-hospital mortality (OR 5.71; CI 1.03, 31.53; p = 0.05), 30-day mortality (OR 10.56; CI 2.03, 54.05; p = 0.005) and 90-day mortality (OR 6.88; CI 1.40, 33.87; p = 0.02). Conclusions Bilateral RAS is associated with increased incidence of AKI as well as in-hospital, 30-day, and 90-day mortality suggesting it is a marker of poor outcomes and should be considered in preoperative risk stratification.
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Affiliation(s)
- Amanda C. Filiberto
- Department of Surgery, University of Florida, Gainesville, FL, United States of America
| | - Shunshun Miao
- Precision and Intelligent Systems in Medicine (PrismaP), University of Florida, Gainesville, FL, United States of America
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Yuanfang Ren
- Precision and Intelligent Systems in Medicine (PrismaP), University of Florida, Gainesville, FL, United States of America
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Tezcan Ozrazgat-Baslanti
- Precision and Intelligent Systems in Medicine (PrismaP), University of Florida, Gainesville, FL, United States of America
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Sara E. Hensley
- Department of Surgery, University of Florida, Gainesville, FL, United States of America
| | - Christopher R. Jacobs
- Department of Surgery, University of Florida, Gainesville, FL, United States of America
| | - M. Libby Weaver
- Department of Surgery, University of Florida, Gainesville, FL, United States of America
| | - Gilbert R. Upchurch
- Department of Surgery, University of Florida, Gainesville, FL, United States of America
| | - Azra Bihorac
- Precision and Intelligent Systems in Medicine (PrismaP), University of Florida, Gainesville, FL, United States of America
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Michol Cooper
- Department of Surgery, University of Florida, Gainesville, FL, United States of America
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5
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Modrall JG, Jeon-Slaughter H, Ramanan B, Tsai S, Miller RT, Hastings JL. Predicting renal function response to renal artery stenting. J Vasc Surg 2023; 78:102-110.e1. [PMID: 36868330 DOI: 10.1016/j.jvs.2023.02.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 03/05/2023]
Abstract
OBJECTIVE The Cardiovascular Outcomes in Renal Atherosclerotic Lesions Trial found no benefit of renal artery stenting (RAS) over medical therapy, although it was underpowered to detect a benefit among patients with chronic kidney disease (CKD). A post hoc analysis demonstrated improved event-free survival after RAS for patients whose renal function improved by 20% or more. A significant obstacle to achieving this benefit is the inability to predict which patients' renal function will improve from RAS. The objectives of the current study were to identify predictors of renal function response to RAS. METHODS The Veteran Affairs Corporate Data Warehouse was queried for patients who underwent RAS between 2000 and 2021. The primary outcome was improvement in renal function (estimated glomerular filtration rate [eGFR]) after stenting. Patients were categorized as responders if the eGFR at 30 days or greater after stenting increased by 20% or more compared with before stenting. All others were nonresponders. RESULTS The study cohort included 695 patients with a median follow-up of 7.1 years (interquartile range, 3.7-11.6 years). Based on postoperative change in eGFR, 202 stented patients (29.1%) were responders, and the remainder (n = 493 [70.9%]) were nonresponders. Before RAS, responders had a significantly higher mean serum creatinine, lower mean eGFR, and higher rate of decline of preoperative GFR in the months before stenting. After stenting, responders had a 26.1% increase in eGFR, compared with before stenting (P < .0001), which remained stable during follow-up. In contrast, nonresponders had a progressive 5.5% decrease in eGFR after stenting. Logistic regression analysis identified three predictors of renal function response to stenting: (1) diabetes (odds ratio [OR], 0.64; 95% confidence interval [CI], 0.44-0.91; P = .013), (2) CKD stages 3b or 4 (OR, 1.80; 95% CI, 1.26-2.57; P = .001), and (3) rate of decline in preoperative eGFR per week before stenting (OR, 1.21; 95% CI, 1.05-1.39; P = .008). CKD stages 3b and 4 and the rate of decline in preoperative eGFR are positive predictors of renal function response to stenting, whereas diabetes is a negative predictor. CONCLUSIONS Based on our data, patients in CKD stages 3b and 4 (eGFR 15-44 mL/min/1.73 m2) are the only subgroups with a significant probability of improved renal function after RAS. The rate of decline of preoperative eGFR over the months before stenting is a powerful discriminator of patients who are most likely to benefit from RAS. Specifically, patients with a more rapid decrease in eGFR before stenting have a significantly greater probability of improved renal function with RAS. In contrast, diabetes is a negative predictor of improved renal function, so interventionalists should be circumspect about RAS in diabetic patients.
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Affiliation(s)
- J Gregory Modrall
- Surgical Service, Dallas Veterans Affairs Medical Center, Dallas, TX; Division of Vascular and Endovascular Surgery, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX.
| | | | - Bala Ramanan
- Surgical Service, Dallas Veterans Affairs Medical Center, Dallas, TX; Division of Vascular and Endovascular Surgery, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX
| | - Shirling Tsai
- Surgical Service, Dallas Veterans Affairs Medical Center, Dallas, TX; Division of Vascular and Endovascular Surgery, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX
| | - R Tyler Miller
- Medicine Service, Dallas Veterans Affairs Medical Center, Dallas, TX; Division of Nephrology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Jeffrey L Hastings
- Medicine Service, Dallas Veterans Affairs Medical Center, Dallas, TX; Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX
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Modrall JG, Zhu H, Prasad T, Moe O, Dworkin LD, Cutlip DE, Murphy TP, Cooper CJ, Toto R. Retrieval of Renal Function After Renal Artery Stenting Improves Event-Free Survival in a Sub-group Analysis of the Cardiovascular Outcomes in Renal Atherosclerotic Lesions Trial. J Vasc Surg 2023; 77:1685-1692.e2. [PMID: 36736864 DOI: 10.1016/j.jvs.2022.12.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The Cardiovascular Outcomes in Renal Atherosclerotic Lesions (CORAL) Trial, a multicenter randomized controlled trial with 947 patients, concluded that there was no benefit of renal artery stenting (RAS) over medical therapy. However, patients with chronic kidney disease (CKD) were not analyzed separately in the CORAL trial. CKD is a risk factor for cardiovascular and renal morbidity. We hypothesized that improved renal function after RAS would be associated with increased long-term survival and a lower risk of cardiovascular and renal events in patients with CKD. METHODS This post hoc analysis of the CORAL Trial included 842 patients with CKD stages 2-4 at baseline who were randomized to optimal medical therapy alone (OMT; n= 432) or RAS plus OMT (RAS+OMT; n = 410). Patients were categorized as "responders" or "non-responders" based on change in estimated glomerular filtration rate (eGFR) from baseline to last follow-up (median 3.6 years, interquartile range 2.6-4.6 years). Responders were defined by a 20% or greater increase in eGFR from baseline; all others were non-responders. Event-free survival was defined as freedom from death and multiple cardiovascular and renal complications. Event-free survival was analyzed using the Kaplan-Meier method and log-rank test. Multivariable Cox proportional hazards regression analysis was used to identify independent predictors of event-free survival. RESULTS The RAS+OMT group had a higher proportion of patients with improved renal function (≥20% increase in eGFR over baseline), compared to the OMT group (25.6% vs. 17.1%; P = .003). However, event-free survival was no different for the two cohorts (P = .18 by log-rank test). Multivariable Cox proportional hazards regression analysis identified four variables that independently correlated with event-free survival for the stented cohort. Higher preoperative eGFR (Hazard Ratio [HR] = 0.98, 95% Confidence Interval [CI] 0.96-0.99; P = .002) and being a responder to stenting (HR = 0.49, 95% CI 0.26-0.95; P = .033) increased event-free survival, while history of congestive heart failure (HR 2.52, 95% CI 1.46-4.35; P < .001) and higher preoperative systolic BP (HR 1.02, 95% CI 1.01-1.03; P = .002) decreased event-free survival. Within the stented group, 105 of 410 patients (25.6%) were responders. Event-free survival was superior for responders, compared to non-responders (P=0.009 by log-rank test). The only independent preoperative negative predictor of improved renal function after stenting was diabetes (Odds Ratio 0.37, 95% CI 0.16-0.84; P = 0.017), which decreased the probability of improved renal function after RAS+OMT. A subset of patients (23.4%) after RAS had worsened renal function, but OMT alone produced an equivalent incidence of worsened renal function. Increased urine albumin/creatinine ratio was an independent predictor of worsened renal function after RAS. CONCLUSIONS CORAL participants who demonstrated improved kidney function after RAS+OMT demonstrated improved event-free survival. This finding reinforces the need for predictors of outcome to guide patient selection for RAS.
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Affiliation(s)
- J Gregory Modrall
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of Texas Southwestern Medical Center.
| | - Hong Zhu
- Department of Public Health Sciences, University of Virginia School of Medicine
| | - Tanushree Prasad
- School of Public Health, University of Texas Southwestern Medical Center
| | - Orson Moe
- Division of Nephrology, Department of Internal Medicine; Department of Physiology; Charles and Jane Pak Center for Mineral Metabolism, University of Texas Southwestern Medical Center
| | | | | | | | | | - Robert Toto
- Division of Nephrology, Department of Internal Medicine; Charles and Jane Pak Center for Mineral Metabolism, University of Texas Southwestern Medical Center
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Lu YT, Zhou ZM, Zhang D, Sun L, Liu XC, Yang YK, Jiang XJ, Zhou XL. Percutaneous Transluminal Renal Angioplasty for Fibromuscular Dysplasia and Prognostic Risk Factors: A Retrospective Chinese Cohort Study. J Clin Med 2022; 12:jcm12010023. [PMID: 36614824 PMCID: PMC9821653 DOI: 10.3390/jcm12010023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/06/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Fibromuscular dysplasia (FMD) is a non-atherosclerotic, non-inflammatory vascular disease involving small-to-medium-sized arteries. The characteristics of Chinese patients with FMD remain unclear. We retrospectively analyzed the data of patients with renal FMD who underwent percutaneous transluminal renal angioplasty (PTRA) for the first time at Fuwai Hospital between 2010 and 2021. The variables were selected through least absolute shrinkage and selection operator regression (LASSO), and logistic regression models were constructed to identify independent risk factors. A total of 116 patients (52 males, median age at diagnosis, 25.0 years) were enrolled. Elevated blood pressure was the leading complaint. After a median follow-up period of 18.0 months (interquartile range: 6.0-48.0 months), hypertension recurred in 34 patients and restenosis in nine patients, among whom four patients underwent secondary intervention and one patient underwent surgical revascularization. Bilateral renal artery involvement (odds ratio [OR]: 2.61, 95% confidence interval [CI]: 1.11-6.15; p = 0.028) and age at hypertension onset (OR: 0.93, 95% CI: 0.88-0.99; p = 0.018) were independent prognostic factors for adverse outcomes. The results indicate that patients with bilateral renal artery involvement and younger age at hypertension onset are more likely to have poorer clinical outcomes after PTRA, and should be more closely monitored.
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Affiliation(s)
- Yi-Ting Lu
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Ze-Ming Zhou
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Di Zhang
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Lin Sun
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Xin-Chang Liu
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Yan-Kun Yang
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Xiong-Jing Jiang
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Xian-Liang Zhou
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
- Correspondence: ; Tel.: +86-10-8839-2162
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Mirzai S, Jain V, Arustamyan M, Bachour S, Puri R, Yun J, Unai S, Harb S, Krishnaswamy A, Kapadia S. Early Improvement in Renal Function After Balloon-Expandable TAVR in Patients With RAC. JACC Cardiovasc Interv 2022; 15:1887-1889. [DOI: 10.1016/j.jcin.2022.06.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/18/2022] [Accepted: 06/14/2022] [Indexed: 11/28/2022]
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Zhang H, Huang T, Shen J, Zou Y, Deng Y, Hou M, Huang X. Clinical Effect of Renal Arterial Sympathetic Radiofrequency Ablation on Secondary Hypertension. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:9948057. [PMID: 35959345 PMCID: PMC9359839 DOI: 10.1155/2022/9948057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/07/2022] [Accepted: 07/09/2022] [Indexed: 11/30/2022]
Abstract
Sympathetic hyperactivity is one of the main mechanisms of secondary hypertension. Reducing renal sympathetic activity through surgery can effectively reduce blood pressure. Many cases have shown that renal denervation (RDN) can selectively block renal artery sympathetic nerve activity to control refractory hypertension. This surgery is a minimally invasive surgery, and the risk of surgery-related adverse events is significantly reduced compared with surgery. Therefore, the purpose of this study is to explore the efficacy of radiofrequency ablation of renal artery sympathetic nerve in the treatment of secondary hypertension. Eight patients with secondary hypertension diagnosed by the cardiovascular department of our hospital and treated with RDN were followed up for 3-18 months, of which 5 cases were followed up for more than 12 months and 8 cases were followed up for more than 3 months. Eight patients were treated with radiofrequency ablation of renal artery catheter. The parameters such as preoperative blood pressure, antihypertensive drugs, organ function, intraoperative ablation resistance, power, time, and temperature were determined. The related changes of blood pressure, antihypertensive drugs, and visceral function and the occurrence of side effects at 1 week and 1, 3, 6, and 12 months after operation were related to the operation. In conclusion, RDN has a significant clinical effect in the treatment of refractory hypertension, with stable postoperative blood pressure drop, reduced drug dosage, and less side effects.
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Affiliation(s)
- Hui Zhang
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Ting Huang
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Jie Shen
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Yuanlin Zou
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Yunchao Deng
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Min Hou
- Department of Internal Medicine, Daji Street Health Center, Caidian District, Wuhan 430113, China
| | - Xiang Huang
- Department of Surgery, Affiliated Huangjiahu Hospital, Hubei University of Chinese Medicine, 430065, China
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10
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Ma N, Li Y, Wang S, Li M, Li Y, Ai H, Zhu H, Wang Y, Guo F, Ren J. Dynamic changes of renal cortical blood perfusion before and after percutaneous transluminal renal artery stenting in patients with severe atherosclerotic renal artery stenosis. Chin Med J (Engl) 2022; 135:00029330-990000000-00073. [PMID: 35864596 PMCID: PMC9532041 DOI: 10.1097/cm9.0000000000002162] [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: 11/01/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND This study aims to observe the dynamic changes of renal artery (RA) disease and cortical blood perfusion (CBP) evaluated by contrast-enhanced ultrasound (CEUS) after percutaneous transluminal renal artery stenting (PTRAS) in patients with severe atherosclerotic renal artery stenosis (ARAS) and to analyze the relationship between CBP and prognosis. METHODS This was a single-center retrospective cohort study. A total of 98 patients with unilateral severe ARAS after successful PTRAS in Beijing Hospital from September 2017 to September 2020 were included. According to renal glomerular filtration rate (GFR) detected by radionuclide imaging at 12 months after PTRAS, all patients were divided into the poor prognosis group (n = 21, GFR decreased by ≥20% compared with baseline) and the control group (n = 77, GFR decreased by < 20% or improved compared with baseline). Renal artery stenosis was diagnosed by digital subtraction angiography, and renal CBP was evaluated by CEUS using TomTec Imaging Systems (Germany) before PTRAS, at 6 months and 12 months after discharge. The receiver operating characteristic (ROC) curve with area under the curve (AUC) was used to analyze the predictive value of CBP parameters, including area under ascending curve (AUC1), area under the descending curve (AUC2), rising time (RT), time to peak intensity (TTP), maximum intensity (IMAX), and mean transit time (MTT) for poor prognosis. RESULTS Among the 98 patients, there were 52 males (53.1%), aged 55-74 years old, with an average age of 62.1 ± 8.7 years, and an average artery stenosis of 82.3 ± 12.9%. The poor prognosis group was associated with significantly increased incidence of diabetes (76.2% vs. 41.6%), and lower levels of GFR of the stenotic kidney (21.8 mL/min vs. 25.0 mL/min) and total GFR (57.6 mL/min vs. 63.7 mL/min) (all P < 0.05), compared with the control group (P < 0.05). In addition, the rate of RA restenosis was significantly higher in the poor prognosis group than in the control group (9.5% vs. 0, χ2 = 9.462, P = 0.002). Compared with the control group, the poor prognosis group was associated with significantly decreased baseline AUC1 and AUC2, and extended duration of TTP and MTT (P < 0.05). At 6 months and 12 months of follow-up, patients in the control group were associated with markedly increased AUC1, AUC2, and IMAX, and shorter duration of RT and MTT (P < 0.05). The ROC curve showed that the predictive values of AUC1, AUC2, RT, TTP, IMAX, and MTT for poor prognosis were 0.812 (95% CI: 0.698-0.945), 0.752 (95% CI: 0.591-0.957), 0.724 (95% CI: 0.569-0.961), 0.720 (95% CI: 0.522-0.993), 0.693 (95% CI: 0.507-0.947), and 0.786 (95% CI: 0.631-0.979), respectively. CONCLUSIONS Preoperative renal CBP in severe ARAS patients with poor prognosis is significantly reduced, and does not show significant improvement after stent treatment over the first year of follow-up. The parameter AUC1 may be a good predictor for renal dysfunction after PTRAS in severe ARAS patients. Trial Registration: ChiCTR.org.cn, ChiCTR1800016252.
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Affiliation(s)
- Na Ma
- Department of Sonography, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Yan Li
- Department of Sonography, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Siyu Wang
- Department of Sonography, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Mengpu Li
- Department of Sonography, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Yongjun Li
- Department of Vascular Surgery, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Hu Ai
- Department of Cardiology, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Hui Zhu
- Department of Nuclear Medicine, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Yang Wang
- Department of Medical Research & Biometrics Center, National Center for Cardiovascular Diseases and Fuwai Hospital, CAMS and PUMC, Beijing 100037, China
| | - Fajin Guo
- Department of Sonography, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
| | - Junhong Ren
- Department of Sonography, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, China
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11
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Yu H, Khan M, Wu H, Du X, Chen R, Rollins DM, Fang X, Long J, Xu C, Sawchuk AP. A new noninvasive and patient-specific hemodynamic index for the severity of renal stenosis and outcome of interventional treatment. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING 2022; 38:e3611. [PMID: 35509229 PMCID: PMC9539998 DOI: 10.1002/cnm.3611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/30/2021] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
Renal arterial stenosis (RAS) often causes renovascular hypertension, which may result in kidney failure and life-threatening consequences. Direct assessment of the hemodynamic severity of RAS has yet to be addressed. In this work, we present a computational concept to derive a new, noninvasive, and patient-specific index to assess the hemodynamic severity of RAS and predict the potential benefit to the patient from a stenting therapy. The hemodynamic index is derived from a functional relation between the translesional pressure indicator (TPI) and lumen volume reduction (S) through a parametric deterioration of the RAS. Our in-house computational platform, InVascular, for image-based computational hemodynamics is used to compute the TPI at given S. InVascular integrates unified computational modeling for both image processing and computational hemodynamics with graphic processing unit parallel computing technology. The TPI-S curve reveals a pair of thresholds of S indicating mild or severe RAS. The TPI at S = 0 represents the pressure improvement following a successful stenting therapy. Six patient cases with a total of 6 aortic and 12 renal arteries are studied. The computed blood pressure waveforms have good agreements with the in vivo measured ones and the systolic pressure is statistical equivalence to the in-vivo measurements with p < .001. Uncertainty quantification provides the reliability of the computed pressure through the corresponding 95% confidence interval. The severity assessments of RAS in four cases are consistent with the medical practice. The preliminary results inspire a more sophisticated investigation for real medical insights of the new index. This computational concept can be applied to other arterial stenoses such as iliac stenosis. Such a noninvasive and patient-specific hemodynamic index has the potential to aid in the clinical decision-making of interventional treatment with reduced medical cost and patient risks.
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Affiliation(s)
- Huidan Yu
- Department of Mechanical and Energy EngineeringIndiana University‐Purdue University, Indianapolis (IUPUI)IndianapolisIndianaUSA
- Department of SurgeryIndiana University School of MedicineIndianapolisIndianaUSA
| | - Monsurul Khan
- Department of Mechanical and Energy EngineeringIndiana University‐Purdue University, Indianapolis (IUPUI)IndianapolisIndianaUSA
- Present address:
School of Mechanical EngineeringPurdue UniversityWest LafayetteIndianaUSA
| | - Hao Wu
- Department of Mechanical and Energy EngineeringIndiana University‐Purdue University, Indianapolis (IUPUI)IndianapolisIndianaUSA
| | - Xiaoping Du
- Department of Mechanical and Energy EngineeringIndiana University‐Purdue University, Indianapolis (IUPUI)IndianapolisIndianaUSA
| | - Rou Chen
- Department of Mechanical and Energy EngineeringIndiana University‐Purdue University, Indianapolis (IUPUI)IndianapolisIndianaUSA
- Present address:
College of Metrology and Measurement EngineeringChina Jiliang UniversityHangzhouChina
| | - Dave M. Rollins
- Vascular Diagnostic CenterIndiana University HealthIndianapolisIndianaUSA
| | - Xin Fang
- Department of Vascular Surgery, The Affiliated Hangzhou First People's HospitalZhejiang University School of MedicineHangzhouChina
| | - Jianyun Long
- Department of Vascular Surgery, The Affiliated Hangzhou First People's HospitalZhejiang University School of MedicineHangzhouChina
| | - Chenke Xu
- Department of Ultrasound, The Affiliated Hangzhou First People's HospitalZhejiang University School of MedicineHangzhouChina
| | - Alan P. Sawchuk
- Department of SurgeryIndiana University School of MedicineIndianapolisIndianaUSA
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12
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Cadour F, Silhol F, Iline N, Giorgi R, Lorthioir A, Amar L, Sapoval M, Rousseau H, Sarlon G, Thony F, Jacquier A. Insights from intravascular pressure measurement of renal artery revascularization in patients with fibromuscular dysplasia: the DYSART study. J Vasc Surg 2021; 75:939-949.e1. [PMID: 34601043 DOI: 10.1016/j.jvs.2021.09.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 09/04/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The indication of percutaneous renal transluminal angioplasty (PTRA) in fibromuscular dysplasia (FMD) is mainly based on renal artery stenosis (RAS) due to atherosclerosis criteria, which are not specific to FMD. Consequently, the selection of patients who could benefit from this treatment and its effectiveness remain uncertain. The aims of this study were to: (1) report the effects of PTRA guided by trans-stenotic pressure measurements on hypertension 7 months after treatment; (2) assess the impact of pressure measurement to guide treatment efficacy in comparison to visual angiographic parameters; and (3) evaluate the reproducibility and accuracy of the stenosis measurement using a 4F catheter in comparison to a pressure guidewire. METHODS This prospective multi-centric study analyzed 24 patients with hypertension with RAS due to FMD that required PTRA. Clinical, duplex ultrasound, and angiographic indices were collected, and patients were followed up for 7 months (±1 month). Angiographic indices were measured twice both by a pressure guidewire and a 4F catheter. Assessment of procedural and clinical success of angioplasty was performed for all patients. RESULTS Twenty-three patients (96%) had procedural success (considered as a post-PTRA translesional systolic gradient ≤10 mmHg or reduced by at least 80%) with a significant decrease in the systolic gradient after angioplasty (26.50 mmHg; [interquartile range, 16.75-38.75] vs 0.00 [interquartile range, 0.00-2.00]; P < .01). Three patients (12%) had complications, including two renal artery dissections and one partial renal infarction. Twenty-one patients (88%) were clinical responders to angioplasty at follow-up. Visual stenosis assessment showed a poor correlation with systolic gradient measurement before and after PTRA (R from -0.05 to 0.41; P = 0.06-0.82). High correlations were found between pressure measurements made by a 4F catheter and guidewire (R from 0.64 to 0.89; P ≤ .003). CONCLUSIONS In patients selected by clinical indicators and duplex ultrasound, reaching a translesional systolic gradient ≤10 mmHg or reduced by at least 80% after angioplasty, promotes a high success rate for PTRA in hypertension due to FMD RAS.
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Affiliation(s)
- Farah Cadour
- Department of Radiology, La Timone Hospital, Marseille, France.
| | - François Silhol
- Department of Hypertension and Vascular Medicine, La Timone Hospital, Marseille, France
| | - Nicolas Iline
- Department of Biostatistiques et Technologies de l'Information et de la Communication, APHM, Hop Timone, BioSTIC, Marseille, France
| | - Roch Giorgi
- Aix Marseille Univ, APHM, INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l'Information Médicale, Hop Timone, BioSTIC, Biostatistique et Technologies de l'Information et de la Communication, Marseille, France
| | - Aurélien Lorthioir
- Hypertension Unit, AP-HP, Hôpital Européen Georges-Pompidou, Paris, France
| | - Laurence Amar
- Hypertension Unit, AP-HP, Hôpital Européen Georges-Pompidou, Paris, France
| | - Marc Sapoval
- Department of Interventional Radiology, Hôpital Européen Georges Pompidou, AP-HP, Université de Paris-Descartes Paris 5, Paris, France
| | | | - Gabrielle Sarlon
- Department of Hypertension and Vascular Medicine, La Timone Hospital, Marseille, France
| | - Frederic Thony
- Department of Imaging and Interventional Radiology, Grenoble-Alpes University Hospital, Grenoble, France
| | - Alexis Jacquier
- Department of Radiology, La Timone Hospital, Marseille, France
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13
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Guerreiro H, Avanesov M, Dinnies S, Sehner S, Schön G, Wenzel U, Adam G, Ittrich H, Regier M. Efficiency of Percutaneous Stent Angioplasty in Renal Artery Stenosis - 15 Years of Experience at a Single Center. ROFO-FORTSCHR RONTG 2020; 193:298-304. [PMID: 33003245 DOI: 10.1055/a-1236-4195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE To determine the therapeutic efficiency of percutaneous revascularization in renal artery stenosis (RAS), as well as the role of comprehensive factors such as patient selection and degree of artery stenosis, on clinical outcome. METHODS AND MATERIALS 101 patients with hemodynamically relevant RAS underwent percutaneous angioplasty (PTA). 65.7 % were male (mean age: 64 years; range: 18-84). The clinical data was retrospectively analyzed. The serum creatinine (Cr), glomerular filtration rate (GFR), and blood pressure (BP) levels pre- and postprocedural, between 6 months and 1 year, were retrospectively collected and statistically analyzed. RESULTS Follow-up data was available in 34 (33.7 %) and 28 patients (27.7 %) for Cr and MAP, respectively. A significant drop in mean arterial pressure (MAP) was observed on follow-up (mean -5.27 mmHg). Higher baseline Cr and MAP values showed a more pronounced drop in the follow-up (Cr: p 0.002; difference to baseline -0.25 mg/dL, 95 %CI:-0.36, -0.07 and BP p < 0.001; diff. to baseline -0.72 mmHg; 95 %CI: -1.4, -0.40). There was no association between comorbidities, gender, and degree of stenosis with renal and BP outcome. No significant improvement in renal function was observed on follow-up (mean Cr drop: -0.015 mg/dL). The age group 51-60 years showed a significant improvement in BP (p 0.030; diff. to baseline -19.2 mmHg; 95 %CI: -34, -4.3). There was a slight reduction in antihypertensive medication following angioplasty (0.2 fewer). Minor complications were recorded in five procedures (4.9 %). CONCLUSION Percutaneous renal artery revascularization in the presence of atherosclerotic RAS is a safe procedure associated with a significant drop in post-procedural BP. No significant improvement in renal function was observed. Further prospective studies focused on patient selection are necessary. KEY POINTS · Percutaneous stent angioplasty in renal artery stenosis is associated with a significant improvement in post-procedural blood pressure control.. · There is no improvement in renal function after percutaneous stent angioplasty for renal artery stenosis (RAS).. · Percutaneous stent angioplasty is a safe procedure.. CITATION FORMAT · Guerreiro H, Avanesov M, Dinnies S et al. Efficiency of Percutaneous Stent Angioplasty in Renal Artery Stenosis - 15 Years of Experience at a Single Center. Fortschr Röntgenstr 2021; 193: 298 - 304.
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Affiliation(s)
- Helena Guerreiro
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Maxim Avanesov
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Stefanie Dinnies
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Susanne Sehner
- Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gerhard Schön
- Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ulrich Wenzel
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Harald Ittrich
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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14
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Modrall JG, Zhu H, Weaver FA. Clinical predictors of blood pressure response after renal artery stenting. J Vasc Surg 2020; 72:1269-1275. [PMID: 32139312 DOI: 10.1016/j.jvs.2019.12.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/22/2019] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The Cardiovascular Outcomes in Renal Atherosclerotic Lesions (CORAL) trial, a multicenter randomized controlled trial, failed to demonstrate a benefit of renal artery stenting (RAS) over medical therapy in patients with renal artery stenosis and hypertension. However, there are patients for whom RAS is a consideration because of failure of medical therapy. Unfortunately, selection of patients for RAS is complicated by a lack of validated predictors of blood pressure (BP) response. A previous single-center study identified three preoperative markers of BP response to RAS: requirement for four or more antihypertensive medications, preoperative diastolic BP >90 mm Hg, and preoperative clonidine use. To date, these markers of outcome have not been independently validated. The aim of this study was to validate these markers using data from the CORAL trial. METHODS All patients randomized in the CORAL trial to RAS were included. American Heart Association guidelines were used to categorize patients as BP responders or nonresponders to RAS. BP responders were defined by a postoperative BP <160/90 mm Hg with a reduced number of antihypertensive medications or a reduction in diastolic BP to <90 mm Hg with the same medications after RAS. Patients with stable or worsened BP were labeled nonresponders. Variables associated with a favorable BP response were identified by multivariable logistic regression analysis. RESULTS There were 436 patients who underwent RAS with a median age of 70 years (interquartile range [IQR], 63-76 years). The median systolic and diastolic BPs of the stented cohort at baseline were 149 mm Hg (IQR, 132-164 mm Hg) and 78 mm Hg (IQR, 70-87 mm Hg), respectively. A positive BP response occurred in 284 of 436 (65.1%) stented patients. Multivariable logistic regression analysis identified three independent markers of a positive BP response: requirement for four or more medications (odds ratio, 5.9; P < .001), preoperative diastolic BP >90 mm Hg (odds ratio 13.9; P < .001), and preoperative clonidine use (odds ratio, 4.52; P = .008). The percentage of patients with a positive BP response increased incrementally as the number of markers per patient increased, based on the Cochran-Armitage test for trend (P < .0001). CONCLUSIONS In patients from the CORAL trial who underwent RAS, the previously reported clinical markers of BP response were validated. A prospective trial to validate their utility as predictors of BP response to RAS is warranted.
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Affiliation(s)
- J Gregory Modrall
- Division of Vascular and Endovascular Surgery, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Tex; Surgical Service, Dallas Veterans Affairs Medical Center, Dallas, Tex.
| | - Hong Zhu
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, Tex
| | - Fred A Weaver
- Division of Vascular and Endovascular Surgery, Department of Surgery, Keck School of Medicine at the University of Southern California, Los Angeles, Calif
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15
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Shibasaki S, Kishino T, Fujiwara Y, Suzuki Y, Harashima K, Nakajima S, Ohnishi H, Watanabe T. Influence of resting before sonographic examination on Doppler measurements of renal blood flow. Clin Physiol Funct Imaging 2020; 40:190-195. [PMID: 32092236 DOI: 10.1111/cpf.12625] [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: 06/24/2019] [Revised: 02/06/2020] [Accepted: 02/14/2020] [Indexed: 12/01/2022]
Abstract
Renal artery stenosis (RAS) is the most common cause of secondary hypertension, via increases in plasma renin-angiotensin-aldosterone levels. Renal artery stenosis is diagnosed from blood examinations such as renin activity and from imaging examinations such as sonography. Patients are required to lie on the bed for 30 min before and during phlebotomy, since plasma renin activity is easily altered by posture. However, no such pre-examination rest is required for sonography. The present study therefore investigated the possible influence of resting before examination on Doppler parameters used for the diagnosis of RAS. Subjects comprised 55 healthy young adults (24 males, 31 females; mean age, 22 ± 1 years). Sonographic measurements were made shortly after subjects entered the examination room and again after 30 min of rest lying on a bed. Median peak systolic velocity in the renal artery was significantly decreased after rest (106 cm/s, interquartile range (IQR) 96-121 cm/s) compared with before rest (120 cm/s, IQR 107-135 cm/s; p < .001). Median acceleration time in the intra-renal segmental artery was also significantly shorter after rest (49 ms, IQR 38-54 ms) compared to before rest (50 ms, IQR 38-59 ms; p = .039). The present results suggest that serious consideration should be given regarding whether pre-examination resting is needed to accurately interpret Doppler measurements of renal blood flow when diagnosing RAS from sonography.
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Affiliation(s)
| | | | | | - Yuka Suzuki
- Kyorin University Faculty of Health Sciences, Tokyo, Japan
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16
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Abe M, Akaishi T, Miki T, Miki M, Funamizu Y, Araya K, Ishizawa K, Takayama S, Takase K, Abe T, Ishii T, Ito S. Influence of renal function and demographic data on intrarenal Doppler ultrasonography. PLoS One 2019; 14:e0221244. [PMID: 31454365 PMCID: PMC6711528 DOI: 10.1371/journal.pone.0221244] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 08/02/2019] [Indexed: 02/04/2023] Open
Abstract
Intrarenal Doppler ultrasonography is a non-invasive method to evaluate the renal blood flow in patients with renal arterial stenosis as well as chronic kidney diseases (CKD). Until recently, the relationship between ultrasonography findings and CKD stage has not been fully understood. Overall, 162 patients with CKD without apparent renal arterial stenosis were included in this study, and the pulsed-wave Doppler ultrasonography findings were evaluated in terms of the following parameters: peak systolic velocity (PSV), end-diastolic velocity (EDV), and resistive index (RI) at the renal arterial trunk, hilum, segmental, and interlobar regions. Age showed a significant negative correlation with the estimated glomerular filtration rate (eGFR), kidney size, and aortic PSV. Additionally, age showed a significant positive correlation with RI in all 4 regions. The eGFR showed a positive correlation with the aortic PSV and kidney size, but a negative correlation with RI. Both age and eGFR were found to be independently associated with aortic blood flow. On the intrarenal ultrasound, EDV and RI showed stronger correlations with eGFR than PSV, suggesting that the former indices would be better markers of renal function. In particular, the interlobar EDV was found to be the best index that reflects renal function. Although the RI is also a good marker of renal function, it is confounded by age; thus, its utility would be weaker than that of the EDV. In conclusion, intrarenal pulsed-wave Doppler ultrasonography is a useful tool to estimate and evaluate the renal function; the interlobar EDV may be the best index to estimate the effective perfusion and filtration of the kidneys.
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Affiliation(s)
- Michiaki Abe
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan
- Department of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
- * E-mail:
| | - Tetsuya Akaishi
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan
| | - Takashi Miki
- Clinical Physiology Center, Tohoku University Hospital, Sendai, Japan
| | - Mika Miki
- Clinical Physiology Center, Tohoku University Hospital, Sendai, Japan
| | - Yasuharu Funamizu
- Clinical Physiology Center, Tohoku University Hospital, Sendai, Japan
| | - Kaori Araya
- Clinical Physiology Center, Tohoku University Hospital, Sendai, Japan
| | - Kota Ishizawa
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan
| | - Shin Takayama
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan
| | - Kei Takase
- Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan
| | - Takaaki Abe
- Department of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
| | - Tadashi Ishii
- Department of Education and Support for Regional Medicine, Tohoku University Hospital, Sendai, Japan
| | - Sadayoshi Ito
- Department of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
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17
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Surgical Renovascular Reconstruction for Renal Artery Stenosis and Aneurysm: Long-Term Durability and Survival. Eur J Vasc Endovasc Surg 2019; 57:562-568. [DOI: 10.1016/j.ejvs.2018.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 09/11/2018] [Indexed: 12/11/2022]
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18
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Yang M, Lin L, Niu G, Yan Z, Zhang B, Tong X, Zou Y. Successful endovascular treatment of chronic renal artery occlusion: a preliminary retrospective case series including 15 patients. Int Urol Nephrol 2019; 51:285-291. [PMID: 30607776 DOI: 10.1007/s11255-018-02067-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/24/2018] [Indexed: 10/27/2022]
Abstract
PURPOSE To evaluate in a retrospective, single-center, case series if percutaneous transluminal renal angioplasty/stenting of chronic renal artery occlusion is beneficial to renal function and blood pressure control, which remains controversial. METHODS Data from 15 consecutive patients with renal artery stump who underwent successful percutaneous transluminal renal angioplasty/stenting only for unilateral chronic renal artery occlusion at our center from January 2007 to February 2018 and completed follow-up were retrospectively evaluated. Of the 15 patients, 14 (93.3%) were treated with stenting and 1 with only balloon angioplasty. Estimated glomerular filtration rate (eGFR) was calculated using the Modification of Diet in Renal Disease (MDRD) formula corrected for Chinese, and changes in blood pressure and need for antihypertensive medications were recorded. RESULTS At median 1.5-year (interquartile range 0.5-5.0) follow-up, restenosis rate was 20.0%. Renal function improved or remained stable in 26.7% and 53.3% of patients, respectively, and blood pressure normalized or improved in 13.3% and 40.0% of patients, respectively. Young patients with Takayasu's arteritis or fibromuscular dysplasia appeared to benefit the most from revascularization. CONCLUSIONS In this preliminary retrospective series of select patients with renal artery stump, endovascular treatment of chronic renal artery occlusion appeared to preserve renal function and improve blood pressure.
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Affiliation(s)
- Min Yang
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, 8 Xishiku St, Beijing, 100034, People's Republic of China
| | - Letao Lin
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, 8 Xishiku St, Beijing, 100034, People's Republic of China
| | - Guochen Niu
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, 8 Xishiku St, Beijing, 100034, People's Republic of China
| | - Ziguang Yan
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, 8 Xishiku St, Beijing, 100034, People's Republic of China
| | - Bihui Zhang
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, 8 Xishiku St, Beijing, 100034, People's Republic of China
| | - Xiaoqiang Tong
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, 8 Xishiku St, Beijing, 100034, People's Republic of China
| | - Yinghua Zou
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, 8 Xishiku St, Beijing, 100034, People's Republic of China.
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19
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Kishino T, Harashima K, Hashimoto S, Fukuta N, Seki M, Ohnishi H, Watanabe T, Otaki J. Meal Ingestion and Hemodynamic Interactions Regarding Renal Blood Flow on Duplex Sonography: Potential Diagnostic Implications. ULTRASOUND IN MEDICINE & BIOLOGY 2018; 44:2050-2054. [PMID: 30041904 DOI: 10.1016/j.ultrasmedbio.2018.05.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 05/13/2018] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
Splanchnic blood flow changes dramatically after meal ingestion. The present study evaluated physiologic interactions between meal ingestion and hemodynamics with respect to renal blood flow on duplex sonography, assessing the possible influence on Doppler parameters used as diagnostic criteria for renal artery stenosis. Subjects comprised 26 healthy young men (mean age: 22 ± 2 y). Sonographic measurements were made shortly after breakfast and every 1 h thereafter and were compared with values measured before the meal. Peak systolic velocity in the renal artery was elevated post-prandially, peaking at 1 h (90 ± 12 cm/s), compared with pre-prandially (73 ± 10 cm/s, p < 0.01). Similarly, acceleration time at the intra-renal segmental artery shortened to a minimum at 1 h (45 ± 5 ms) compared with baseline (51 ± 6 ms, p < 0.01). The present study indicates that renal blood flow is altered for a few hours after meal ingestion. Attention should be paid to the interpretation of data measured after meals on duplex sonography for diagnosis of renal artery stenosis.
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Affiliation(s)
- Tomonori Kishino
- Faculty of Health Sciences, Kyorin University, Tokyo, Japan; School of Medicine, Kyorin University, Tokyo, Japan.
| | | | | | - Naoya Fukuta
- Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Masayo Seki
- Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | | | | | - Junichi Otaki
- Faculty of Health Sciences, Kyorin University, Tokyo, Japan
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20
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Hu Y, Zhang Y, Wang H, Yin Y, Cao C, Luo J, Wang Y. Percutaneous renal artery stent implantation in the treatment of atherosclerotic renal artery stenosis. Exp Ther Med 2018; 16:2331-2336. [PMID: 30186475 PMCID: PMC6122453 DOI: 10.3892/etm.2018.6440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 06/26/2018] [Indexed: 12/04/2022] Open
Abstract
We aimed to investigate the clinical curative effect of percutaneous renal artery stent implantation (PTRAS) in the treatment of atherosclerotic renal artery stenosis (ARAS), and to analyze the factors influencing the curative effect of PTRAS. A total of 230 patients with unilateral or bilateral renal artery stenosis were retrospectively analyzed. According to whether adverse cardiogenic or nephrogenic events occurred, 230 patients were divided into two groups to analyze the risk factors of adverse cardiogenic or nephrogenic events. The blood pressure of patients at each time-point after operation was decreased significantly compared with that before operation (P<0.01). The levels of serum creatinine (SCr) at 24 h and 36 months after PTRAS were slightly increased compared with that before operation (P>0.05). The estimated glomerular filtration rate (eGFR) at each time-point after operation was slightly decreased compared with that before operation, but the difference was not statistically significant (P>0.05). Renography showed that GFR on the side of stent implantation at 36 months after PTRAS had no significant change compared with that before operation (P>0.05), but GFR on the unaffected side without receiving PTRAS was significantly increased compared with that before operation (P=0.0014). During the 36-month follow-up, there were a total of 56 cases of adverse cardiogenic or nephrogenic events. Multivariate regression analysis results showed that adverse cardiogenic or nephrogenic events after PTRAS were obviously associated with age (≥65 years old), Charlson comorbidity index (CCI) score (≥2 points), diabetes mellitus, stroke and congestive heart failure (CHF) (P<0.05). In conclusion, PTRAS can effectively control the blood pressure and reduce the types of antihypertensive drugs used by patients with ARAS, but it has no definitely protective effect on renal function. Age (≥65 years old), CCI score (≥2 points), diabetes mellitus, stroke and CHF are risk factors leading to adverse cardiogenic or nephrogenic events after PTRAS.
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Affiliation(s)
- Youbin Hu
- Department of Cardiology, Taizhou Hospital of Traditional Chinese Medicine, Taizhou, Jiangsu 225300, P.R. China
| | - Yongguang Zhang
- Department of Cardiology, Taizhou Hospital of Traditional Chinese Medicine, Taizhou, Jiangsu 225300, P.R. China
| | - Hua Wang
- Department of Obstetrics and Gynecology, Taizhou Hospital of Traditional Chinese Medicine, Taizhou, Jiangsu 225300, P.R. China
| | - Yong Yin
- Department of Obstetrics and Gynecology, Taizhou Hospital of Traditional Chinese Medicine, Taizhou, Jiangsu 225300, P.R. China
| | - Chunhua Cao
- Department of Nephrology, Taizhou Hospital of Traditional Chinese Medicine, Taizhou, Jiangsu 225300, P.R. China
| | - Jing Luo
- Department of Cardiology, Nanjing Zhongda Hospital, Nanjing, Jiangsu 210009, P.R. China
| | - Yunfei Wang
- Department of Acupuncture, Taizhou Hospital of Traditional Chinese Medicine, Taizhou, Jiangsu 225300, P.R. China
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Differences in renal hemodynamics and renin secretion between patients with unifocal and multifocal fibromuscular dysplasia. J Hypertens 2018; 36:1729-1735. [DOI: 10.1097/hjh.0000000000001755] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Functional Assessment of Intermediate Vascular Disease. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7619092. [PMID: 29850561 PMCID: PMC5925208 DOI: 10.1155/2018/7619092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/12/2017] [Accepted: 01/28/2018] [Indexed: 11/19/2022]
Abstract
Interventional treatment in various vascular beds has advanced tremendously. However, there are several problems to be considered. We searched the literature and tried to analyze major parts of it. One is safety and applicability of coronary proven methods in other vascular beds. An unresolved problem is the functional assessment of intermediate lesions, as far as various target organs have quite different circulation from the coronary one and the functional tests should be modified in order to be applicable and meaningful. In the majority of the acute vascular syndromes, the culprit lesion is of intermediate size on visual assessment. On the other hand, a procedurally successfully managed high-degree stenosis is not always followed by clinical and prognostic benefit. In vascular beds, where collateral network naturally exists, the readings from the functional assessment are complicated and thus the decision for interventional treatment is even more difficult. Here come into help the functional assessment and imaging with IVUS, OCT, high-resolution MRI, and contrast enhanced CT or SPECT. The focus of the current review is on the functional assessment of intermediate stenosis in other vascular beds, unlike the coronary arteries.
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Huang IKH, Renani SA, Morgan RA. Complications and Reinterventions After Fenestrated and Branched EVAR in Patients with Paravisceral and Thoracoabdominal Aneurysms. Cardiovasc Intervent Radiol 2018; 41:985-997. [PMID: 29511866 DOI: 10.1007/s00270-018-1917-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/21/2018] [Indexed: 12/17/2022]
Abstract
The application of endovascular strategies to treat aneurysms involving the abdominal and thoracoabdominal aorta has evolved significantly since the inception of endovascular aneurysm repair. Advances in endograft technology and operator experience have enabled the management of a wider spectrum of challenging aortic anatomy. Fenestrated endovascular and branched endovascular aneurysm repair represent two technical innovations, which have expanded endovascular treatment options to include patients with paravisceral and thoracoabdominal aortic aneurysms. Although similar in many ways to standard aortic endografts, fenestrated and branched endografts have specific short- and long-term complications due to their unique modular endograft design and their sophisticated deployment mechanisms. This article aims to examine the commonly encountered complications with these devices and the endovascular reintervention strategies.
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Affiliation(s)
- Ivan Kuang Hsin Huang
- Department of Radiology, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore.
| | | | - Robert A Morgan
- Department of Radiology, St. George's Hospital NHS Trust, London, UK
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Modrall JG, Trimmer C, Tsai S, Kirkwood ML, Ali M, Rectenwald JE, Timaran CH, Rosero EB. Renal Salvage with Renal Artery Stenting Improves Long-term Survival. Ann Vasc Surg 2017; 45:106-111. [DOI: 10.1016/j.avsg.2017.05.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 05/02/2017] [Accepted: 05/26/2017] [Indexed: 10/19/2022]
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Vitiello GA, Blumberg SN, Sadek M. Endovascular Treatment of Spontaneous Renal Artery Dissection After Failure of Medical Management. Vasc Endovascular Surg 2017; 51:509-512. [DOI: 10.1177/1538574417723155] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Gerardo A. Vitiello
- Division of Vascular and Endovascular Surgery, New York University Langone Medical Center, NY, USA
| | - Sheila N. Blumberg
- Division of Vascular and Endovascular Surgery, New York University Lutheran Medical Center, Brooklyn, NY, USA
| | - Mikel Sadek
- Division of Vascular and Endovascular Surgery, New York University Langone Medical Center, NY, USA
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Pathophysiological differences between multifocal fibromuscular dysplasia and atherosclerotic renal artery stenosis. J Hypertens 2017; 35:845-852. [DOI: 10.1097/hjh.0000000000001243] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wholey MH, Wholey MH. Percutaneous Endovascular Therapy of Renal Artery Stenosis: Technical and Clinical Developments in the past Decade. J Endovasc Ther 2016; 11 Suppl 2:II43-61. [PMID: 15760247 DOI: 10.1177/15266028040110s612] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Renal artery stenosis may initiate or exacerbate arterial hypertension and/or renal insufficiency. During the last decade, technical improvements of diagnostic and interventional endovascular tools have led to more widespread use of endoluminal renal artery revascularization and broader indications for this type of therapy. Since the first renal artery angioplasties performed by Felix Mahler and Andreas Grüntzig in 1978, numerous single-center studies have documented the benefits of percutaneous renal revascularization. In the early 1990s, stent implantation was added to the interventionist's armamentarium for treating renal artery stenosis due to atherosclerosis or fibromuscular dysplasia. The metaanalysis of 3 randomized studies comparing balloon angioplasty with best medical therapy found intervention to be beneficial for blood pressure control but not for preservation of renal function. Despite the absence of randomized studies, there is mounting evidence that stenting of hemodynamically relevant atherosclerotic renal artery stenosis has a positive impact on blood pressure control and renal function. This article summarizes the technical improvements in these endovascular tools during the last decade and gives an overview concerning their clinical impact on renal artery revascularization.
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Affiliation(s)
- Mark H Wholey
- University of Pittsburgh Medical Center-Shadyside, Pittsburgh, Pennsylvania 15232, USA.
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Incidence and risk factors for restenosis, and its impact on blood pressure control after percutaneous transluminal renal angioplasty in hypertensive patients with renal artery stenosis. J Hypertens 2016; 34:1407-15. [DOI: 10.1097/hjh.0000000000000928] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Clinical characteristics and treatment of renal artery fibromuscular dysplasia with percutaneous transluminal angioplasty: a long-term follow-up study. Clin Res Cardiol 2016; 105:930-937. [PMID: 27270759 DOI: 10.1007/s00392-016-1001-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Accepted: 05/27/2016] [Indexed: 01/09/2023]
Abstract
BACKGROUND Renal artery fibromuscular dysplasia (RAFMD) is a non-atherosclerotic cause of renal artery stenosis often affecting the young. Percutaneous transluminal renal angioplasty (PTRA) is the treatment of choice but there are few studies of the outcome of the procedure. METHODS This retrospective analysis included 64 patients (56.2 % female; mean age at diagnosis, 28.0 years) with RAFMD who underwent PTRA between November 2003 and August 2015. Technical and clinical success rates and restenosis rates were evaluated. RESULTS Seventy-six procedures were performed on 64 RAFMD patients. Technical success was 96.9 %, as defined by <30 % residual stenosis, with stent placement required in 11 patients (17.2 %). In the short term (1 month), the majority (79.7 %) had an immediate clinical benefit, with cure of hypertension in 35.9 %, and improvement in hypertension and a lower requirement for antihypertensive medications in 43.8 %. In the long term (mean, 47.5 months; range, 5-141 months), the survival rate was 96.9 %, freedom from restenosis was 84.4 %, and 76.6 % of patients showed a sustained clinical benefit (cure rate 40.6 %, improvement rate 35.9 %). Eight patients were treated with a second procedure and two had a third procedure, with half of these patients showing an improvement in hypertension. CONCLUSION PTRA for symptomatic RAFMD is safe and clinically successful. More than half of patients experience an immediate clinical benefit with sustained long-term effects. For patients with restenosis, there was a good response to a second PTRA.
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Renal hemodynamics and renin–angiotensin system activity in humans with multifocal renal artery fibromuscular dysplasia. J Hypertens 2016; 34:1160-9. [DOI: 10.1097/hjh.0000000000000917] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Solař M, Žižka J, Krajina A, Michl A, Raupach J, Klzo L, Ryška P, Ceral J. Comparison of Duplex Ultrasonography and Magnetic Resonance Imaging in the Detection of Significant Renal Artery Stenosis. ACTA MEDICA (HRADEC KRÁLOVÉ) 2016; 54:9-12. [DOI: 10.14712/18059694.2016.10] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Objective: The aim of our study was to evaluate duplex ultrasonography (DUS) and magnetic resonance angiography (MRA) in detection of haemodynamically significant renal artery stenosis (RAS). Methods: The study included patients with high clinical suspicion of renovascular hypertension (RVH). The imaging of renal arteries was performed by DUS, MRA and digital subtraction angiography (DSA). Significant RAS was defined as maximum systolic velocity ≥ 180 cm/sec (DUS) or as 60% reduction of the endoluminal arterial diameter (MRA, DSA). The results of DUS and MRA were assessed in respect to the results of DSA. Results: Arterial supply of 186 kidneys in 94 patients was evaluated. DSA revealed significant RAS in 61 kidneys evaluated. DUS was not able to examine arterial supply in 18 kidneys of 13 patients. In the detection of significant RAS, DUS was characterized by sensitivity and specificity of 85 % and 84 %. MRA achieved satisfactory imaging quality in all but one kidney evaluated. The sensitivity and specificity of MRA in the detection of significant RAS was 93 % and 93 %, respectively. Conclusion: In patients with high clinical probability of RVH, MRA proved to be more reliable and superior in both sensitivity and specificity to DUS in the detection of significant RAS.
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Liao CW, Lin YT, Wu XM, Chang YY, Hung CS, Wu VC, Wu KD, Lin YH. The relation among aldosterone, galectin-3, and myocardial fibrosis: a prospective clinical pilot follow-up study. J Investig Med 2016; 64:1109-13. [PMID: 27190071 DOI: 10.1136/jim-2015-000014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2016] [Indexed: 12/18/2022]
Abstract
UNLABELLED Primary aldosteronism has been associated with myocardial fibrosis, and is the most common cause of secondary hypertension. We previously showed that aldosterone can induce the secretion of galectin-3. The aim of this study was to investigate the association between myocardial fibrosis and plasma galectin-3 level in patients with primary aldosteronism. We prospectively analyzed 11 patients with aldosterone-producing adenoma (APA) who received adrenalectomy from December 2006 to October 2008, and 17 patients with essential hypertension as controls. Levels of plasma galectin-3 were determined in both groups, and both groups underwent echocardiography with cyclic variations of integrated backscatter (CVIBS) to characterize tissue initially and 1 year after surgery in the APA group. Diastolic blood pressure, concentration of plasma aldosterone and aldosterone-renin ratio were significantly higher, and serum potassium level and plasma renin activity significantly lower in the APA group compared to the controls. In addition, left ventricular mass index was significantly higher and CVIBS significantly lower in the APA group (7.3±2.0 vs 9.2±1.7 dB, p=0.015). Furthermore, the concentration of plasma galectin-3 was significantly higher in the APA group (2.1±0.9 vs 1.1±0.6 ng/mL, p=0.005) compared to the controls. CVIBS was correlated to plasma galectin-3 level. In the APA group, CVIBS increased significantly (7.3±2.0 to 9.2±2.4 dB, p=0.032) and plasma galectin-3 decreased (2.1±0.9 to 1.2±0.6, p=0.049) 1 year postadrenalectomy. The patients with APA had increased myocardial fibrosis, and this was associated with a higher plasma galectin-3 level. Both increased myocardial fibrosis and plasma galectin-3 level recovered at least partially after adrenalectomy. TRIAL REGISTRATION NUMBER 200611031R; Results.
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Affiliation(s)
- Che-Wei Liao
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Yen-Tin Lin
- Department of Internal Medicine, Taoyuan General Hospital, Taoyuan, Taiwan
| | - Xue-Ming Wu
- Department of Internal Medicine, Taoyuan General Hospital, Taoyuan, Taiwan
| | - Yi-Yao Chang
- Cardiology Division of Cardiovascular Medical Center, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Chi-Sheng Hung
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Vin-Cent Wu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Kwan-Dun Wu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yen-Hung Lin
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Naghi J, Palakodeti S, Ang L, Reeves R, Patel M, Mahmud E. Renal frame count: a measure of renal flow that predicts success of renal artery stenting in hypertensive patients. Catheter Cardiovasc Interv 2016. [PMID: 26198066 DOI: 10.1002/ccd.25946] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVES Renal artery (RA) stenting can improve control of hypertension yet predicting clinical response remains difficult. We sought to determine the role of the renal frame count (RFC) (number of angiographic frames for contrast to reach distal renal parenchyma after initial RA opacification) as a predictor of improvement in blood pressure (BP) after RA stenting. METHODS Renal flow was quantified in 68 consecutive patients (age 72.5 ± 9.1 years, 72% male) undergoing RA stenting for refractory hypertension (BP ≥ 140/90 mm Hg despite treatment with two or more antihypertensive medications) by measuring RFC pre-RA stenting. Significant renal artery stenosis (RAS) was defined as a stenosis ≥ 70% by visual estimation on angiography. Baseline and 6-month follow-up BP was recorded. Clinical response was defined by a drop in systolic blood pressure (SBP) >10 mm Hg on the same or fewer number of anti-hypertensive medications. RESULTS Patients with RFC > 30 had SBP reduction (43.2 ± 25.7 mm Hg vs. 30.1 ± 31.3 mm Hg, P = 0.067), diastolic blood pressure reduction (9.1 ± 19.0 vs. -0.2 ± 13.4 mm Hg, P = 0.02), and mean arterial pressure reduction (23.8 ± 19.4 vs. 11.8 ± 16.1 mm Hg, P < 0.001) compared to patients with RFC ≤ 30. Furthermore, baseline RFC >30 was associated with a higher rate of clinical response to RA stenting (93.5% vs. 73%, P = 0.027). CONCLUSIONS RFC can be used as a clinical predictor of response to RA stenting. RFC > 30 was associated with reduction in BP after RA stenting and was predictive of clinical response. RFC provides a useful intraprocedural tool in assessing the severity of RAS and predicts the likelihood of clinical response following RA stenting.
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Affiliation(s)
- Jesse Naghi
- Division of Cardiovascular Medicine, Sulpizio Cardiovascular Center, University of California, San Diego, California
| | - Samhita Palakodeti
- Division of Cardiovascular Medicine, Sulpizio Cardiovascular Center, University of California, San Diego, California
| | - Lawrence Ang
- Division of Cardiovascular Medicine, Sulpizio Cardiovascular Center, University of California, San Diego, California
| | - Ryan Reeves
- Division of Cardiovascular Medicine, Sulpizio Cardiovascular Center, University of California, San Diego, California
| | - Mitul Patel
- Division of Cardiovascular Medicine, Sulpizio Cardiovascular Center, University of California, San Diego, California
| | - Ehtisham Mahmud
- Division of Cardiovascular Medicine, Sulpizio Cardiovascular Center, University of California, San Diego, California
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Peng M, Ji W, Jiang X, Dong H, Zou Y, Song L, Zhang H, Zhang W, Yang Y, Gao R. Selective stent placement versus balloon angioplasty for renovascular hypertension caused by Takayasu arteritis: Two-year results. Int J Cardiol 2016; 205:117-123. [DOI: 10.1016/j.ijcard.2015.12.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 12/02/2015] [Accepted: 12/12/2015] [Indexed: 11/16/2022]
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Peng M, Jiang XJ, Dong H, Zou YB, Song L, Zhang HM, Wu HY, Yang YJ, Gao RL. A Comparison of Nephrotoxicity of Contrast Medium in Elderly Patients who Underwent Renal or Peripheral Arterial Vascular Intervention. Intern Med 2016; 55:9-14. [PMID: 26726079 DOI: 10.2169/internalmedicine.55.5321] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE To compare the nephrotoxicity of iodixanol in elderly patients who underwent a renal artery intervention (RAI) with those who underwent an other peripheral vascular intervention (OPI). METHODS Three hundred fifty-four consecutive patients (>60 years old) received iodixanol during RAI (n=150) or OPI (n=204). The level of serum creatinine (SCr) was measured at the baseline, 24 hours, 48 hours, 72 hours and 1 month after intervention. RESULTS Within 72 hours after the intervention, the adjusted mean of the peak SCr increase was 11.22 umol/L 〔95% confidence interval (CI): 9.21-13.24〕 in the RAI group and 12.40 umol/L (95%CI: 10.7-14.09) in the OPI group. The difference in the peak SCr increase was -1.17 umol/L (95%CI: -3.94-1.60; p=0.406). Contrast-induced nephropathy occurred in 26 patients (17.3%) of the RAI group and in 27 patients (13.2%) of the OPI group (p=0.286). Patients who underwent an RAI showed no increased risk for contrast-induced nephropathy in comparison with patients who underwent an OPI 〔adjusted odds ratio (OR)=1.108; 95%CI: 0.540-2.273; p=0.780〕. CONCLUSION The nephrotoxic effect of iodixanol in elderly patients who underwent RAI or OPI was comparable.
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Affiliation(s)
- Meng Peng
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, China
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Burlacu A, Siriopol D, Voroneanu L, Nistor I, Hogas S, Nicolae A, Nedelciuc I, Tinica G, Covic A. Atherosclerotic Renal Artery Stenosis Prevalence and Correlations in Acute Myocardial Infarction Patients Undergoing Primary Percutaneous Coronary Interventions: Data From Nonrandomized Single-Center Study (REN-ACS)—A Single Center, Prospective, Observational Study. J Am Heart Assoc 2015; 4:e002379. [PMID: 26459932 PMCID: PMC4845148 DOI: 10.1161/jaha.115.002379] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background We are the first to evaluate the prevalence of renal artery stenosis (RAS) in consecutive patients with acute myocardial infarction (AMI) referred for primary percutaneous coronary intervention from a single tertiary center. As a novelty, we assessed hydration and metabolic status and measured arterial stiffness. We elaborated a predicting model for RAS in AMI. Methods and Results One hundred and eighty‐one patients with AMI underwent concomitantly primary percutaneous coronary intervention and renal angiography. We obtained data on demographics, medical history, cardiovascular risk factors, echocardiography, Killip class, and blood tests. In the first 24 hours post–primary percutaneous coronary intervention, we assessed bioimpedance through Body Composition Monitoring® and arterial stiffness through pulsed‐wave velocity, SphygmoCor®. Significant RAS (>50% lumen narrowing, RAS+) was present in 16.6% patients. In the RAS+ group we recorded significantly higher stiffness, CRUSADE score and dehydration, and more women with higher prevalence of multivascular coronary artery disease and heart failure. In our multivariate models, variables independently associated with RAS+ were previous percutaneous coronary intervention, low estimated glomerular filtration rate, multivascular coronary artery disease, and total/extracellular body water. These models had good specificity and low sensitivity. Conclusions We observed that RAS+ AMI patients have a particular hydration, metabolic, and endothelial profile that could generate more future major adverse cardiac events. Hence, renal angiography in AMI should be considered in specific subsets of patients. Clinical Trial Registration URL: https://www.clinicaltrials.gov/. Unique identifier: NCT02388139.
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Affiliation(s)
- Alexandru Burlacu
- Department of Interventional Cardiology, Cardiovascular Diseases Institute, Iasi, Romania (A.B., I.N.)
| | - Dimitrie Siriopol
- Department of Nephrology, University of Medicine "Gr. T. Popa", Iasi, Romania (D.S., L.V., I.N., S.H., A.C.)
| | - Luminita Voroneanu
- Department of Nephrology, University of Medicine "Gr. T. Popa", Iasi, Romania (D.S., L.V., I.N., S.H., A.C.)
| | - Ionut Nistor
- Department of Nephrology, University of Medicine "Gr. T. Popa", Iasi, Romania (D.S., L.V., I.N., S.H., A.C.)
| | - Simona Hogas
- Department of Nephrology, University of Medicine "Gr. T. Popa", Iasi, Romania (D.S., L.V., I.N., S.H., A.C.)
| | - Ana Nicolae
- Department of Cardiology, Cardiovascular Diseases Institute, Iasi, Romania (A.N.)
| | - Igor Nedelciuc
- Department of Interventional Cardiology, Cardiovascular Diseases Institute, Iasi, Romania (A.B., I.N.)
| | - Grigore Tinica
- Department of Cardiovascular Surgery, Cardiovascular Diseases Institute, Iasi, Romania (G.T.)
| | - Adrian Covic
- Department of Nephrology, University of Medicine "Gr. T. Popa", Iasi, Romania (D.S., L.V., I.N., S.H., A.C.)
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Ladapo TA, Gajjar P, McCulloch M, Scott C, Numanoglu A, Nourse P. Impact of revascularization on hypertension in children with Takayasu's arteritis-induced renal artery stenosis: a 21-year review. Pediatr Nephrol 2015; 30:1289-95. [PMID: 25648879 DOI: 10.1007/s00467-015-3049-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 12/31/2014] [Accepted: 01/06/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Surgery for reno-vascular hypertension (RVH) is complex, and the techniques utilized vary with anatomical presentations of the disease. The long-term outcome of revascularization on RVH in children with Takayasu's arteritis (TA)-induced renal artery stenosis (RAS) at our centre was reviewed. METHODS This study was a 21-year retrospective review of pre- and post-intervention RVH in children with angiographically confirmed RAS. The outcome of hypertension was defined as follows: (1) cured (normotensive off anti-hypertensives), (2) improved (normotensive on same or reduced number of medications), or (3) failure (no cure or improvement in number of medications). RESULTS The medical histories of 59 children (median age 9.98 years) were reviewed, of whom 20 (44 %) had revascularization procedures. All were hypertensive, with a mean systolic and diastolic blood pressure of 161.5 ± 36 and 106.5 ± 31 mmHg, respectively. RAS was present in 45 (76.3 %) children. Twenty-four revascularization procedures were performed in 20 children (44 %), of whom five had contralateral nephrectomies. Outcome was available for 17 patients at the 3- and 6-months follow-up, with cure, improvement and failure rates at 3 months of 2/17 (11.8 %), 7/17 (41.2 %) and 8/19 (47 %), respectively, and similar rates at 6 months. Associations between outcome and age (p = 0.51), sex (p = 0.32), number of pre-surgery anti-hypertensives (p = 0.18) and stenosis sites (p = 0.22) were not statistically significant. CONCLUSIONS Revascularization was beneficial to the management of blood pressure control in about half of our RVH patients.
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Affiliation(s)
- Taiwo Augustina Ladapo
- Pediatric Nephrology, Department of Pediatrics, College of Medicine, University of Lagos and Lagos University Teaching Hospital, PMB 12003, Idi-Araba, Lagos, Nigeria,
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Effect of Huanshuai Recipe Oral Liquid ([characters: see text]) on renal dysfunction progression in patients with atherosclerotic renal artery stenosis. Chin J Integr Med 2015; 21:811-6. [PMID: 25847775 DOI: 10.1007/s11655-015-2046-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To investigate the effect of Huanshuai Recipe Oral Liquid ([characters: see text], HSR) on retarding the progression of renal dysfunction in patients with atherosclerotic renal artery stenosis (ARAS). METHODS A total of 52 ARAS patients with the Chinese medicine (CM) syndrome of qi deficiency and blood stasis, phlegm and dampness retention were recruited and randomly assigned into the treatment group (36 cases) and the control group (16 cases). Both groups received a basic treatment (high-quality low-protein diet, blood pressure control, lipid-lowering, correcting the acidosis, etc.). In addition, the treatment group received 20 mL HSR and the control group received placebo, 3 times a day for 6 months. Renal function (serum creatinine, blood urea nitrogen and uric acid) and blood lipids (cholesterol, triglycerides and low density lipoprotein) were examined monthly. The estimated glomerular filtration rate (eGFR) and CM syndrome score were compared between groups. RESULTS After treatment, compared with the control group, the serum creatinine level, uric acid level and CM syndrome score of the treatment group were significantly decreased (P<0.05 or P<0.01), and the eGFR in the treatment group were significantly increased (P<0.05). CONCLUSION HSR can effectively improve the renal function and clinical symptoms of ARAS patients.
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Aronow HD, Li J, Parikh SA. Where and when device therapy may be useful in the management of drug-resistant hypertension. Curr Cardiol Rep 2014; 16:546. [PMID: 25326400 DOI: 10.1007/s11886-014-0546-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Device therapy for the treatment of uncontrolled and resistant hypertension has evolved significantly over the past several decades. Both renal artery disease and sympathetic hyperactivity have been linked to resistant hypertension. This manuscript will review the current evidence base supporting device therapy (e.g., renal artery revascularization, sympathetic nervous system modulation) for resistant hypertension.
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Affiliation(s)
- Herbert D Aronow
- Michigan Heart, 5325 Elliott Dr., Ste. #202, Ypsilanti, MI, 48197, USA,
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Lin YH, Chou CH, Wu XM, Chang YY, Hung CS, Chen YH, Tzeng YL, Wu VC, Ho YL, Hsieh FJ, Wu KD. Aldosterone induced galectin-3 secretion in vitro and in vivo: from cells to humans. PLoS One 2014; 9:e95254. [PMID: 25180794 PMCID: PMC4152338 DOI: 10.1371/journal.pone.0095254] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 03/25/2014] [Indexed: 12/20/2022] Open
Abstract
Context Patients with primary aldosteronism are associated with increased myocardial fibrosis. Galectin-3 is one of the most important mediators between macrophage activation and myocardial fibrosis. Objective To investigate whether aldosterone induces galectin-3 secretion in vitro and in vivo. Methods and Results We investigated the possible molecular mechanism of aldosterone-induced galectin-3 secretion in macrophage cell lines (THP-1 and RAW 264.7 cells). Aldosterone induced galectin-3 secretion through mineralocorticoid receptors via the PI3K/Akt and NF-κB transcription signaling pathways. In addition, aldosterone-induced galectin-3 expression enhanced fibrosis-related factor expression in fibroblasts. We observed that galectin-3 mRNA from peripheral blood mononuclear cells and serum galectin-3 levels were both significantly increased in mice implanted with aldosterone pellets on days 7 and 14. We then conducted a prospective preliminary clinical study to investigate the association between aldosterone and galectin-3. Patients with aldosterone-producing adenoma had a significantly higher plasma galectin-3 level than patients with essential hypertension. One year after adrenalectomy, the plasma galectin-3 level had decreased significantly in the patients with aldosterone-producing adenoma. Conclusion This study demonstrated that aldosterone could induce galectin-3 secretion in vitro and in vivo.
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Affiliation(s)
- Yen-Hung Lin
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chia-Hung Chou
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Xue-Ming Wu
- Department of Internal Medicine, Taoyuan General Hospital, Taoyuan, Taiwan
| | - Yi-Yao Chang
- Department of Cardiology, Cardiovascular Center, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Chi-Sheng Hung
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ying-Hsien Chen
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yu-Lin Tzeng
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Vin-Cent Wu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yi-Lwun Ho
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
- * E-mail:
| | - Fon-Jou Hsieh
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Kwan-Dun Wu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Parikh SA, Shishehbor MH, Gray BH, White CJ, Jaff MR. SCAI expert consensus statement for renal artery stenting appropriate use. Catheter Cardiovasc Interv 2014; 84:1163-71. [PMID: 25138644 DOI: 10.1002/ccd.25559] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 05/25/2014] [Indexed: 11/08/2022]
Abstract
The pathophysiology of atherosclerotic renal artery stenosis (RAS) includes activation of the renin-angiotensin-aldosterone axis with resultant renovascular hypertension. Renal artery stenting has emerged as the primary revascularization strategy in most patients with hemodynamically significant atherosclerotic RAS. Despite the frequency with which hemodynamically significant RAS is observed and high rates of technical success of renal artery stenting, there remains considerable debate among experts regarding the role of medical therapy versus revascularization for renovascular hypertension. Modern, prospective, multicenter registries continue to demonstrate improvement in systolic and diastolic blood pressure with excellent safety profiles in patients with RAS. Modern randomized, controlled clinical trials of optimal medical therapy versus renal stenting particularly designed to demonstrate preservation in renal function after renal artery stenting have demonstrated limited benefit. However, these trials frequently excluded patients that may benefit from renal artery stenting. This document was developed to guide physicians in the modern practical application of renal stenting, to highlight the current limitations in the peer-reviewed literature, to suggest best-practices in the performance of renal stenting and to identify opportunities to advance the field.
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Affiliation(s)
- Sahil A Parikh
- University Hospitals Case Medical Center, Harrington Heart and Vascular Institute and Case Western Reserve University School of Medicine, Cleveland, Ohio
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Abstract
Fibromuscular dysplasia (FMD) is a nonatherosclerotic, noninflammatory angiopathy of unknown cause affecting medium-sized (most commonly renal) arteries and causing renovascular hypertension. The most common medial multifocal type of FMD (with the “string of beads” appearance) is more than four times more prevalent in females than in males. FMD accounts for up to 10% of cases of renovascular hypertension. Compared with patients with atherosclerotic renal artery stenosis, patients with FMD are younger, have fewer risk factors for atherosclerosis, and a lower occurrence of atherosclerosis in other vessels. The etiology is multifactorial, including vessel wall ischemia and smoking, as well as hormonal and genetic factors. Intra-arterial digital subtraction angiography is still the gold standard for exclusion or confirmation of renal artery stenosis caused by FMD, at least in young patients, who more often have lesions in branches of the renal artery. For FMD patients with atherosclerosis and those who are older (>50–55 years), significant renal artery stenosis may be confirmed or excluded with ultrasonography. The FMD lesion is typically truncal or distal, whereas atherosclerotic lesions are more often proximal or ostial. Treatment options are medical, endovascular (percutaneous transluminal renal angioplasty [PTRA]), and surgical. Invasive treatment should be considered when hypertension cannot be controlled with antihypertensive drugs and in patients with impaired renal function or ischemic nephropathy. PTRA has become the treatment of choice and normally yields good results, especially in unifocal disease and young patients. Pressure gradients are normally completely abolished, and there is no indication for stent placement. Surgical revascularization is indicated after PTRA complications; thrombosis, perforation, progressive dissection, repeated PTRA failure or restenosis. Centralization of handling is recommended.
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Affiliation(s)
- Anders Gottsäter
- Department of Vascular Diseases, Skåne University Hospital, Malmö, Sweden
| | - Bengt Lindblad
- Department of Vascular Diseases, Skåne University Hospital, Malmö, Sweden
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Dekkers T, ter Meer M, Lenders JWM, Hermus ARM, Schultze Kool L, Langenhuijsen JF, Nishimoto K, Ogishima T, Mukai K, Azizan EAB, Tops B, Deinum J, Küsters B. Adrenal nodularity and somatic mutations in primary aldosteronism: one node is the culprit? J Clin Endocrinol Metab 2014; 99:E1341-51. [PMID: 24758183 DOI: 10.1210/jc.2013-4255] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
CONTEXT Somatic mutations in genes that influence cell entry of calcium have been identified in aldosterone-producing adenomas (APAs) of adrenal cortex in primary aldosteronism (PA). Many adrenal glands removed for suspicion of APA do not contain a single adenoma but nodular hyperplasia. OBJECTIVE The objective of the study was to assess multinodularity and phenotypic and genotypic characteristics of adrenals removed because of the suspicion of APAs. DESIGN AND METHODS We assessed the adrenals of 53 PA patients for histopathological characteristics and immunohistochemistry for aldosterone (P450C18) and cortisol (P450C11) synthesis and for KCNJ5, ATP1A1, ATP2B3, and CACNA1D mutations in microdissected nodi. RESULTS Glands contained a solitary adenoma in 43% and nodular hyperplasia in 53% of cases. Most adrenal glands contained only one nodule positive for P450C18 expression, with all other nodules negative. KCNJ5 mutations were present in 22 of 53 adrenals (13 adenoma and nine multinodular adrenals). An ATP1A1 and a CACNA1D mutation were found in one multinodular gland each and an ATP2B3 mutation in five APA-containing glands. Mutations were always located in the P450C18-positive nodule. In one gland two nodules containing two different KCNJ5 mutations were present. Zona fasciculata-like cells were more typical for KCNJ5 mutation-containing nodules and zona glomerulosa-like cells for the other three genes. CONCLUSIONS Somatic mutations in KCNJ5, ATP1A1, or CACNA1D genes are not limited to APAs but are also found in the more frequent multinodular adrenals. In multinodular glands, only one nodule harbors a mutation. This suggests that the occurrence of a mutation and nodule formation are independent processes. The implications for clinical management remain to be determined.
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Affiliation(s)
- T Dekkers
- Departments of Internal Medicine (T.D., J.W.M.L., J.D.), Pathology (M.t.M., B.T., B.K.), Endocrinology (A.R.M.H.), Radiology (L.S.K.), and Urology (J.F.L.), Radboud University Medical Center, 6500 HB Nijmegen, The Netherlands; Departments of Urology (K.N.) and Biochemistry (K.M.), School of Medicine, Keio University, Tokyo 160-8582, Japan; Department of Chemistry (T.O.), Faculty of Sciences, Kyushu University, Fukuoka 812-8581, Japan; Clinical Pharmacology Unit (E.A.B.A.), Department of Medicine, University of Cambridge, Addenbrooke's Centre for Clinical Investigation, Cambridge DB2 2OO, United Kingdom; and Department of Pathology (B.K.), Maastricht University Medical Center, 6202 AZ Maastricht, The Netherlands
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Ham SW, Weaver FA. Ex vivo renal artery reconstruction for complex renal artery disease. J Vasc Surg 2014; 60:143-50. [DOI: 10.1016/j.jvs.2014.01.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/24/2014] [Accepted: 01/24/2014] [Indexed: 10/25/2022]
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Stevens A, Shamseer L, Weinstein E, Yazdi F, Turner L, Thielman J, Altman DG, Hirst A, Hoey J, Palepu A, Schulz KF, Moher D. Relation of completeness of reporting of health research to journals' endorsement of reporting guidelines: systematic review. BMJ 2014; 348:g3804. [PMID: 24965222 PMCID: PMC4070413 DOI: 10.1136/bmj.g3804] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/27/2014] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To assess whether the completeness of reporting of health research is related to journals' endorsement of reporting guidelines. DESIGN Systematic review. DATA SOURCES Reporting guidelines from a published systematic review and the EQUATOR Network (October 2011). Studies assessing the completeness of reporting by using an included reporting guideline (termed "evaluations") (1990 to October 2011; addendum searches in January 2012) from searches of either Medline, Embase, and the Cochrane Methodology Register or Scopus, depending on reporting guideline name. STUDY SELECTION English language reporting guidelines that provided explicit guidance for reporting, described the guidance development process, and indicated use of a consensus development process were included. The CONSORT statement was excluded, as evaluations of adherence to CONSORT had previously been reviewed. English or French language evaluations of included reporting guidelines were eligible if they assessed the completeness of reporting of studies as a primary intent and those included studies enabled the comparisons of interest (that is, after versus before journal endorsement and/or endorsing versus non-endorsing journals). DATA EXTRACTION Potentially eligible evaluations of included guidelines were screened initially by title and abstract and then as full text reports. If eligibility was unclear, authors of evaluations were contacted; journals' websites were consulted for endorsement information where needed. The completeness of reporting of reporting guidelines was analyzed in relation to endorsement by item and, where consistent with the authors' analysis, a mean summed score. RESULTS 101 reporting guidelines were included. Of 15,249 records retrieved from the search for evaluations, 26 evaluations that assessed completeness of reporting in relation to endorsement for nine reporting guidelines were identified. Of those, 13 evaluations assessing seven reporting guidelines (BMJ economic checklist, CONSORT for harms, PRISMA, QUOROM, STARD, STRICTA, and STROBE) could be analyzed. Reporting guideline items were assessed by few evaluations. CONCLUSIONS The completeness of reporting of only nine of 101 health research reporting guidelines (excluding CONSORT) has been evaluated in relation to journals' endorsement. Items from seven reporting guidelines were quantitatively analyzed, by few evaluations each. Insufficient evidence exists to determine the relation between journals' endorsement of reporting guidelines and the completeness of reporting of published health research reports. Journal editors and researchers should consider collaborative prospectively designed, controlled studies to provide more robust evidence. SYSTEMATIC REVIEW REGISTRATION Not registered; no known register currently accepts protocols for methodology systematic reviews.
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Affiliation(s)
- Adrienne Stevens
- Centre for Practice-Changing Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada, K1H 8L6
| | - Larissa Shamseer
- Centre for Practice-Changing Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada, K1H 8L6 Department of Epidemiology and Community Medicine, University of Ottawa, K1H 8M5 Ottawa, Canada
| | - Erica Weinstein
- Albert Einstein College of Medicine, Yeshiva University, Bronx, NY 10461, USA
| | - Fatemeh Yazdi
- Centre for Practice-Changing Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada, K1H 8L6
| | - Lucy Turner
- Centre for Practice-Changing Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada, K1H 8L6
| | - Justin Thielman
- Centre for Practice-Changing Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada, K1H 8L6
| | - Douglas G Altman
- Centre for Statistics in Medicine, University of Oxford, Oxford OX3 7LD, UK
| | - Allison Hirst
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford OX3 9DU, UK
| | - John Hoey
- Population and Public Health Initiative, Queen's University, Kingston, ON, Canada, K7L 3N6
| | - Anita Palepu
- Centre for Health Evaluation and Outcome Sciences, St Paul's Hospital, Vancouver, BC, Canada, V6Z 1Y9 Department of Medicine, University of British Columbia, Vancouver, BC, Canada, V5Z 1M9
| | - Kenneth F Schulz
- International Clinical Sciences Support Center, FHI 360, Durham, NC 27713, USA
| | - David Moher
- Centre for Practice-Changing Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada, K1H 8L6 Department of Epidemiology and Community Medicine, University of Ottawa, K1H 8M5 Ottawa, Canada
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Tafur-Soto J, White CJ. Selecting patients likely to benefit from renal artery stenting. Interv Cardiol 2014. [DOI: 10.2217/ica.14.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Ghirardo G, De Franceschi M, Vidal E, Vidoni A, Ramondo G, Benetti E, Motta R, Ferraro A, Zanon GF, Miotto D, Murer L. Transplant renal artery stenosis in children: risk factors and outcome after endovascular treatment. Pediatr Nephrol 2014; 29:461-7. [PMID: 24305958 DOI: 10.1007/s00467-013-2681-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 10/17/2013] [Accepted: 10/25/2013] [Indexed: 01/04/2023]
Abstract
BACKGROUND Transplant renal artery stenosis (TRAS) is an increasingly recognised cause of post-transplant hypertension. METHODS We retrospectively analysed 216 paediatric renal recipients transplanted between 2001 and 2011 to assess TRAS prevalence and percutaneous transluminal angioplasty (PTA) efficacy. To assess risk factors, we compared children with TRAS with a propensity score-matched cohort of recipients without TRAS. RESULTS Of the 216 paediatric patients who were transplanted in the study period, 44 were hypertensive (prevalence 20.3 %) and ten presented with TRAS (prevalence 4.6 %, median age at transplantation 14 years, range 6.78-17.36 years). Hypertensive patients without TRAS were prescribed one to two anti-hypertensive agents, whereas patients with TRAS required one to five medications. In the TRAS group, one recipient presented with vascular complications during surgery, and in three patients the graft had vascular abnormalities. TRAS was detected by Doppler ultrasonography (US) performed due to hypertension in nine of the patients with TRAS, but in the tenth case the TRAS was clinically silent and detected by routine Doppler-US screening. TRAS diagnosis was refined using angio-computed tomography or angio-magnetic resonance imaging. All patients underwent PTA without complications. Significant improvement after PTA was observed in the standard deviation scores for blood pressure [3.2 ± 1.4 (pre-PTA) vs. 1.04 ± 0.8 (post-PTA); p = 0.0006) and graft function [creatinine clearance: 69 ± 17.08 (pre-PTA) vs. 80.7 ± 21.5 ml/min/1.73 m(2) (post-PTA); p = 0.006] We observed no significant differences between the two cohorts for cold ischaemia time, recipient/donor weight ratio, delayed graft function, cytomegalovirus infections and acute rejection episodes. CONCLUSIONS Our study reports a low but significant TRAS prevalence among the paediatric patients who were transplanted at our centre in the study period and confirms that PTA is an effective and safe therapeutic option in paediatric renal transplant recipients. Known risk factors do not appear to be related to the development of TRAS.
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Affiliation(s)
- Giulia Ghirardo
- Pediatric Nephrology, Dialysis and Transplant Unit, Department of Pediatrics, University Hospital of Padua, Via Giustiniani 2, 35128, Padova, Italy,
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Short- and mid-term results of balloon angioplasty for renal artery fibromuscular dysplasia. Cardiovasc Interv Ther 2014; 29:293-9. [DOI: 10.1007/s12928-014-0253-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 02/02/2014] [Indexed: 10/25/2022]
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