BACKGROUND: Renal Denervation (RDN) is a novel non-pharmacological technique to treat hypertension. This technique lowers blood pressure by blocking the sympathetic nerve fibers around the renal artery, then causing a decrease in system sympathetic nerve excitability. This study aimed to visualize and analyze research hotspots and development trends in the field of RDN for hypertension through bibliometric analysis.
METHODS: In total, 1479 studies were retrieved on the Web of Science Core Collection (WoSCC) database from 2004 to 2023. Using CiteSpace (6.2.R4) and VOSviewer (1.6.18), visualization maps were generated by relevant literature in the field of RDN for hypertension to demonstrate the research status and frontiers.
RESULTS: The number of publications was found to be generally increasing. Europe and the United States were the first countries to carry out research on different techniques and related RDN clinical trials. The efficacy and safety of RDN have been repeatedly verified and gained increasing attention. The study involves multiple disciplines, including the cardiovascular system, peripheral vascular disease, and physiological pathology, among others. Research hotspots focus on elucidating the mechanism of RDN in the treatment of hypertension and the advantages of RDN in appliance therapy. Additionally, the research frontiers include improvement of RDN instruments and techniques, as well as exploration of the therapeutic effects of RDN in diseases with increased sympathetic nerve activity.
CONCLUSIONS: The research hotspots and frontiers reflect the status and development trend of RDN in hypertension. In the future, it is necessary to strengthen international collaboration and cooperation, conduct long-term clinical studies with a large sample size, and continuously improve RDN technology and devices. These measures will provide new options for more patients with hypertension, thereby improving their quality of life.

BACKGROUND: Isolated rapid eye movement sleep behavior disorder (iRBD) serves as a prodromal phase of Parkinson\'s disease (PD) and dementia with Lewy bodies (DLB). Blunted tachycardia (BT) during postural changes indicates neurogenic orthostatic hypotension, a marker of autonomic dysfunction. We aimed to investigate whether BT is associated with cardiac sympathetic neurogenic denervation. Additionally, we conducted a preliminary short-term follow-up to examine the potential prognostic significance of BT regarding phenoconversion and mortality.
METHODS: Forty-three patients with iRBD at Shiga University of Medical Science Hospital underwent active standing tests to identify BT, defined by a specific ratio of decrease in systolic blood pressure to inadequate increase in heart rate after standing, and orthostatic hypotension. 123I-metaiodobenzylguanidine myocardial scintigraphy (123I-MIBG) and dopamine transporter single-photon emission computed tomography (DAT-SPECT) were performed. Participants were followed up for 3.4 ± 2.4 years for phenoconversion and 4.0 ± 2.3 years for mortality assessment, and the risk of events was analyzed using log-rank tests.
RESULTS: Among the 43 participants (mean age, 72.3 ± 7.9 years; 8 female), 17 met the BT criteria. We found no significant comorbidity-related differences in hypertension or diabetes between the BT(+) and BT(-) groups. Orthostatic hypotension was more prevalent in the BT(+) group than in the BT(-) group (47.1% vs 7.7%, p = 0.003). BT(+) patients were older with a lower early and delayed MIBG uptake; however, no significant differences were observed in DAT accumulation. Phenoconversion was observed in seven (41.2%) BT(+) and seven (26.9%) BT(-) patients. Three deaths were recorded in the BT(+) group (17.6%) and three in the BT(-) group (11.5%). No significant differences were observed in the risk of phenoconversion or mortality between the groups.
CONCLUSIONS: We have identified the possibility that BT reflects cardiac sympathetic neurogenic denervation in patients with iRBD. Future research is needed to elucidate the potential prognostic value of BT.

暂无摘要。

Renal denervation may be indicated in patients with treatment-resistant essential hypertension to decrease sympathetic nervous activity and optimise blood pressure. We present the case of a woman in her 50s with long-standing essential hypertension, a previous transient ischaemic attack, obesity and a family history of cardiovascular disease, who presented with persistent 24-hour ambulatory hypertension despite ongoing lifestyle modifications and being on five antihypertensive agents with no evidence of an alternative primary aetiology. She had intermittent palpitations and blurring of vision alongside evidence of left ventricular hypertrophy on a CT scan. She underwent renal denervation, following which, not only was she able to cease all antihypertensive therapy but managed to maintain optimised blood pressure with subsequent reversal of left ventricular hypertrophy. Trials have demonstrated modest but inconsistent reductions in blood pressure whereas our case represents a \'super-response\' likely due to a higher number of circumferential ablations in comparison to previous studies.

UNASSIGNED: Pulmonary arterial hypertension (PAH) is characterized by persistently elevated pulmonary artery pressure and vascular resistance. Sympathetic overactivity in hypertension participates in pulmonary vascular remodeling and heart failure. The present study aims to explore the efficacy of highly selective thoracic sympathectomy (HSTS) on lowering pulmonary artery pressure, reversing pulmonary vascular remodeling, and improving right ventricular function in rats. A total of 24 Sprague-Dawley rats were randomly assigned into the control group ( n = 8) and experimental group ( n = 16). Rats in the control group were intraperitoneally injected with 0.9% normal saline, and those in the experimental group were similarly administered with received monocrotaline (MCT) injections at 60 mg/kg. Two weeks later, rats in the experimental group were further subdivided randomly into the MCT-HSTS group ( n = 8) and MCT-sham group ( n = 8), and they were surgically treated with HSTS and sham operation, respectively. Two weeks later, significantly lowered mean pulmonary artery pressure (mPAP), pulmonary artery systolic pressure (sPAP), and the ratio of sPAP to femoral artery systolic pressure (sFAP) were detected in the MCT-HSTS group than those of the MCT-sham group. In addition, rats in the MCT-HSTS group presented a significantly lower ratio of vascular wall area to the total vascular area (WT%), right ventricular hypertrophy index, and degrees of right ventricular fibrosis and lung fibrosis in comparison to those of the MCT-sham group. HSTS significantly downregulated protein levels of inflammasomes in pulmonary artery smooth muscle cells (PASMCs). Collectively, HSTS effectively reduces pulmonary artery pressure, pulmonary arteriolar media hypertrophy, and right ventricular hypertrophy in MCT-induced PAH rats. It also exerts an anti-inflammatory effect on PASMCs in PAH rats by suppressing inflammasomes and the subsequent release of inflammatory cytokines.

BACKGROUND: Adipose and muscle tissue wasting outlines the cachectic process during tumor progression. The sympathetic nervous system (SNS) is known to promote tumor progression and research suggests that it might also contribute to cancer-associated cachexia (CAC) energetic expenditure through fat wasting.
METHODS: We sympathectomized L5178Y-R tumor-bearing male BALB/c mice by intraperitoneally administering 6-hydroxydopamine to evaluate morphometric, inflammatory, and molecular indicators of CAC and tumor progression.
RESULTS: Tumor burden was associated with cachexia indicators, including a 10.5% body mass index (BMI) decrease, 40.19% interscapular, 54% inguinal, and 37.17% visceral adipose tissue loss, a 12% food intake decrease, and significant (p = 0.038 and p = 0.0037) increases in the plasmatic inflammatory cytokines IL-6 and IFN-γ respectively. Sympathectomy of tumor-bearing mice was associated with attenuated BMI and visceral adipose tissue loss, decreased interscapular Ucp-1 gene expression to basal levels, and 2.6-fold reduction in Mmp-9 relative gene expression, as compared with the unsympathectomized mice control group.
CONCLUSIONS: The SNS contributes to CAC-associated morphometric and adipose tissue alterations and promotes tumor progression in a murine model.

暂无摘要。

UNASSIGNED: Incessant Ventricular Tachycardia is a condition characterized by multiple episodes of Ventricular Tachycardia (VT) in 24 hours, persisting despite efforts to stop the arrhythmia. In this condition, sympathectomy as the surgical procedure is considered a permanent intervention and the last resort when medications prove ineffective. This procedure comprises the cutting or clamping of sympathetic nerves to prevent the transmission of nerve signals. Therefore, this study aims to present a case report of post-sympathectomy nursing management in a patient with Incessant Ventricular Tachycardia.
UNASSIGNED: A 59-year-old female patient was admitted to the high-care unit with a diagnosis of post-sympathectomy, Incessant Ventricular Tachycardia due to Arrhythmogenic Cardiomyopathy. Nursing problems based on NANDA included decreased cardiac output, gas exchange impairment, and activity intolerance. Furthermore, the nursing interventions for the condition included self-care management and collaboration with an anesthesiologist and cardiologist. The interventions encompassed cardiac care, airway management, and activity therapy. Tele-nursing was also conducted through video calls to monitor the patient after hospital care.
UNASSIGNED: The planned nursing care was effective in preventing common complications that often occur after the surgical procedure. The most important key aspect is regular maintenance and monitoring. The patient was discharged on the third day after the surgery with no complaints of shortness of breath, palpitations, and gradual resumption of activities.
UNASSIGNED: Sympathectomy procedures could successfully be used to treat patients through multidisciplinary collaboration. Furthermore, nurses could emphasize post-operative care management to expedite recovery and improve patient quality of life.

顽固性高血压会导致严重的心脑血管事件，目前仍缺乏行之有效的治疗方法。该文报道1例顽固性高血压合并2型糖尿病的青年患者，三维指导下行经血管腔内交感神经消融术联合肾交感神经消融术治疗，效果良好。该病例为肾交感神经消融术及经血管腔内交感神经消融术治疗顽固性高血压和2型糖尿病提供了新思路。.

Objective: To investigate the long-term therapeutic effects and safety of renal denervation (RDN) on hypertensive patients with different cardiovascular risks, as well as its impact on adverse events, cardiovascular death and all-cause mortality. Methods: This was a single-center, single-arm, real-world retrospective study. Patients with refractory hypertension who underwent RDN at Tianjin First Central Hospital from July 6, 2011 to December 23, 2015 were enrolled and divided into either a high or intermediate-low risk group based on baseline cardiovascular risk. The treatment responsiveness of hypertensive patients with different cardiovascular stratification to RDN was assessed by comparing the results of office blood pressure, home blood pressure, and 24-h ambulatory blood pressure monitoring at 1, 5, and 11 years after RDN. Long-term safety of RDN was assessed by creatinine, and estimated glomerular filtration rate (eGFR) at 1 and 11 years after RDN. In addition, the total defined daily dose (DDD) of antihypertensive medications and the incidence of long-term adverse events, cardiovascular deaths, and all-cause deaths after RDN were followed up 11 years after RDN in person or by telephone. Results: A total of 62 patients with refractory hypertension, aged (50.2±15.0) years, of whom 35 (56.5%) were male, were included. There were 35 cases in high-risk group and 27 cases in low and medium risk group. The decrease in clinic systolic blood pressure (high risk vs. low-medium risk: (-38.0±15.1) mmHg vs. (-25.0±16.6) mmHg(1 mmHg=0.133kPa),P=0.002), home self-measured systolic blood pressure ((-28.4±12.7) mmHg vs. (-19.7±13.1) mmHg,P=0.011) and clinic systolic blood pressure 11 years after RDN ((-43.0±18.4) mmHg vs. (-27.8±17.9) mmHg,P=0.003) in the high-risk group was significantly higher than that in the low-medium risk group. The differences in heart rate and the decrease in total DDD number of antihypertensive drugs between the two groups were not statistically significant (all P>0.05). Creatinine and eGFR levels in the two groups at 1 and 11 years after RDN were not statistically significant when compared with the baseline values (all P>0.05). The cumulative cardiovascular mortality rate was 1.6% (1/62) and 8.1% (5/62), and the cumulative all-cause mortality rate was 3.2% (2/62) and 11.3% (7/62) at 5 and 11 years after RDN, respectively. The differences in the incidence rate of adverse events, cardiovascular mortality, and all-cause mortality rate between the two groups were not statistically significant (all P>0.05). Conclusions: RDN has long-term antihypertensive effect and good safety. Hypertensive patients who belong to the high-risk stratification of cardiovascular risk may respond better to RDN treatment.
目的： 探讨经导管去肾交感神经术（RDN）对不同心血管风险高血压患者的长期治疗效果、安全性，以及对不良事件、心血管死亡和全因死亡等终点事件的影响。 方法： 本研究为单中心、单臂的真实世界回顾性研究。纳入2011年7月6日到2015年12月23日在天津市第一中心医院行RDN治疗的难治性高血压患者，并根据基线心血管风险将患者分为高危组和中低危组。通过比较两组RDN后1、5、11年的诊室血压、家庭自测血压和24 h动态血压监测结果，评估不同心血管危险程度的高血压患者对RDN的治疗响应性；通过随访RDN术后1、11年的肌酐、估算肾小球滤过率（eGFR）评估RDN的长期安全性。通过诊室和电话随访RDN术后11年降压药物总每日限定剂量（DDD）及RDN术后长期不良事件、心血管死亡和全因死亡的发生情况。 结果： 共纳入62例难治性高血压患者，年龄（50.2±15.0）岁，其中男性35例（56.5%）。高危组35例，中低危组27例。高危组患者RDN术后5年的诊室收缩压［（-38.0±15.1）mmHg比（-25.0±16.6）mmHg（1 mmHg=0.133 kPa），P=0.002］、家庭自测收缩压［（-28.4±12.7）mmHg比（-19.7±13.1）mmHg，P=0.011］以及RDN术后11年诊室收缩压［（-43.0±18.4）mmHg比（-27.8±17.9）mmHg，P=0.003］较基线的下降幅度均明显高于低中危组。心率以及降压药总DDD数下降值两组比较差异均无统计学意义（P均>0.05）。RDN术后1、11年两组的肌酐、eGFR水平与基线值比较，差异均无统计学意义（P均>0.05）。全部患者中RDN术后5、11年的累积心血管死亡率分别为1.6%（1/62）和8.1%（5/62），累积全因死亡率分别为3.2%（2/62）和11.3%（7/62），两组的不良事件发生率、心血管死亡率以及全因死亡率差异均无统计学意义（P均>0.05）。 结论： RDN具有长期降压作用且安全性良好。心血管风险高危的高血压患者可能对RDN治疗的响应性更好。.