Comprehensive Analysis of Scientific Output in Hip and Knee Arthroscopy.

PURPOSE OF THE STUDY A global bibliometric comparison of the level of scientific interest and output in the two research areas hip and knee arthroscopy (H-ASC and K-ASC) was carried out. In addition, the different degrees of publication activity in the countries and institutes performing this research were investigated. MATERIAL AND METHODS Publications from 1945-2020 listed in the Web of Science Core Collection were included in the study. Using the web application Science Performance Evaluation (SciPE), quantitative and qualitative aspects were evaluated. Subsequently, the date of publication, author information, and other metadata were analysed. RESULTS Since 1945, 3,924 studies have been published on K-ASC and 2,163 on H-ASC. The majority of the publications which have appeared since 2016 dealt with the topic of H-ASC (H-ASC: 241.2 publications/year; K-ASC: 217.4 publications/year). The USA published the most on both topics (H-ASC: 1,123 publications; K-ASC: 1,078 publications). More countries and institutes participated in K-ASC (3,008 institutes, 82 countries) than in H-ASC (103 institutes, 57 countries). The ten institutes with the most publications accounted for 36.71% and 12.34% of all publications on H-ASC and K-ASC, respectively. H-ASC received 78.12% of its funding from private sponsors while K-ASC was supported mainly by governmental/nonprofit sponsors (70.92%). CONCLUSIONS This study provides the first scientific comparison between H-ASC and K-ASC. Measured by qualitative and quantitative aspects, K-ASC was the most flourishing research area overall. In the last ten to five years, interest has shifted towards HASC with an increasing number of publications and a higher rate of citations. Key words: knee arthroscopy, hip arthroscopy, bibliometric comparison.

[Contrast medium-induced acute kidney injury-Consensus paper of the working group "Heart and Kidney" of the German Cardiac Society and the German Society of Nephrology]. / Kontrastmittelinduzierte akute Nierenschädigung ­ Konsensuspapier der Arbeitsgemeinschaft "Herz ­ Niere" der Deutschen Gesellschaft für Kardiologie ­ Herz- und Kreislaufforschung e. V. und der Deutschen Gesellschaft für Nephrologie e. V.

This consensus paper summarizes the expert consensus and recommendations of the working group "Heart and Kidney" of the German Cardiac Society (DGK) and the German Society of Nephrology (DGfN) on contrast medium-induced acute kidney injury. Potentially nephrotoxic contrast agents containing iodine are frequently used in interventional medicine and for computer tomography diagnostics. Acute kidney injury occurs in approximately 8-17% of patients exposed to contrast media. The risk factors and underlying pathophysiology are discussed and recommendations for the prophylaxis and treatment of contrast medium-induced acute nephropathy are presented.

[Valvular heart disease in patients with chronic kidney disease]. / Herzklappenvitien bei chronischer Niereninsuffizienz.

Valvular heart disease is a common comorbidity in patients with impaired renal function, especially in those with end-stage renal disease undergoing dialysis. Sclerosis and calcification of the heart valves and the valve ring are particularly relevant in the etiology of the diseases. These typically occur at the aortic and mitral valves and can lead to both insufficiency and stenosis of the affected valve. In the current guidelines of the European Society for Cardiology published in 2017, surgical treatment remains the standard of care for most forms of severe valvular heart disease; however, the presence of chronic kidney disease impairs clinical outcomes and is associated with higher mortality rates when compared to patients with preserved renal function. Catheter-based treatment options have emerged as an effective and safe alternative for patients >75 years and/or with increased surgical risk. Consequently, in patients with appropriate anatomy and elevated risk, interventional treatment options should also be discussed in the heart team.

[Cardiovascular pharmacotherapy and coronary revascularization in end-stage renal failure]. / Kardiovaskuläre Pharmakotherapie und koronare Revaskularisation bei terminaler Niereninsuffizienz.

There is a close physiological relationship between the kidneys and the heart. Cardiovascular diseases are the most prevalent cause of death in patients with chronic kidney disease (CKD), whereas CKD may directly accelerate the progression of cardiovascular diseases and is considered to be a cardiovascular risk factor. In patients with mild CKD, i.e. an estimated glomerular filtration rate (eGFR) >60 ml/min/1.73 m2, treatment of coronary artery disease and chronic heart failure is not essentially different from patients with preserved renal function; however, as most pivotal trials have systematically excluded patients with advanced renal failure, many treatment recommendations in this patient group are based on observational studies, post hoc subgroup analyses and meta-analyses or pathophysiological considerations, which are not supported by controlled studies. Therefore, prospective randomized studies on the management of heart failure and coronary artery disease are needed, which should specifically focus on the growing number of patients with advanced renal functional impairment.

[Blood pressure targets in patients with diabetes mellitus : What are optimum values?] / Blutdruckziele bei Patienten mit Diabetes mellitus : Was sind optimale Werte?

Diabetes mellitus and arterial hypertension are the most prevalent diseases in the aging population. Both are important risk factors for the development of cardiovascular complications and are associated with a high mortality. Both diseases are often first recognized late. The prognosis of patients with diabetes mellitus is favorably influenced by an optimal adjustment of blood sugar and blood pressure, as confirmed in large randomized clinical trials. Patients with diabetes mellitus and a blood pressure >130/80 mm Hg should first receive life style counseling with respect to nutrition and activity. Drug treatment for reduction of blood pressure is recommended for a blood pressure ≥140/90 mm Hg.

[Comments on the guidelines (2018) of the European Society of Cardiology (ESC) and the European Society of Hypertension (ESH) on the management of arterial hypertension]. / Kommentar zu den Leitlinien (2018) der Europäischen Gesellschaft für Kardiologie (ESC) und der Europäischen Gesellschaft für Hypertonie (ESH) für das Management der arteriellen Hypertonie.

Arterial hypertension represents one of the most frequent chronic diseases that can lead to complications, such as stroke, dementia, heart attack, heart failure and renal failure. By 2025 the number of hypertensive patients will increase to approximately 1.6 billion people worldwide. The new guidelines of the European Society of Cardiology (ESC) and the European Society of Hypertension (ESH) on the management of arterial hypertension replace the guidelines of the ESC/ESH from 2013. The 2018 guidelines of the ESC/ESH were adopted by the German Cardiac Society and the German Hypertension League. In these comments national characteristics are worked out and the essential new aspects of the guidelines are critically discussed. These include, for example, the definition of hypertension, the importance of out of office blood pressure measurements, revised blood pressure targets, the modified algorithm for drug treatment and the relevance of device-based hypertension treatments. Important aspects for the management of hypertensive emergencies are also presented.

[Baroreceptor activation therapy for therapy-resistant hypertension: indications and patient selection : Recommendations of the BAT consensus group 2017]. / Barorezeptorakivierungstherapie bei therapierefraktärer Hypertonie: Indikation und Patientenselektion : Empfehlungen der BAT-Konsensusgruppe 2017.

Baroreceptor activation therapy (BAT) has been available for several years for treatment of therapy-refractory hypertension (trHTN). This procedure is currently being carried out in a limited number of centers in Germany, also with the aim of offering a high level of expertise through sufficient experience; however, a growing number of patients who are treated with BAT experience problems that treating physicians are confronted with in routine medical practice. In order to address these problems, a consensus conference was held with experts in the field of trHTN in November 2016, which summarizes the current evidence and experience as well as the problem areas in handling BAT patients.

[Anticoagulation in patients with chronic kidney disease : Recommendations from the working group "Heart-Kidney" of the German Cardiac Society and the German Society of Nephrology]. / Antikoagulation bei Patienten mit chronischer Niereninsuffizienz : Empfehlungen der Arbeitsgemeinschaft "Herz ­ Niere" der Deutschen Gesellschaft für Kardiologie ­ Herz- und Kreislaufforschung und der Deutschen Gesellschaft für Nephrologie.

Indications for anticoagulation are thromboembolic events, prosthetic heart valves, and atrial fibrillation with a corresponding risk score. Clinical trials have excluded patients with advanced chronic kidney disease and these data cannot be always generalized to patients with chronic kidney disease. Non-vitamin K antagonist oral anticoagulants (NOACs) are mostly not recommended or are contraindicated in advanced stages of chronic kidney disease. Observational studies have shown that dialysis patients with atrial fibrillation do not profit from coumarin anticoagulants; prospective studies are lacking.

Do patients with diabetes type 2 or chronic heart failure understand a medication plan?

A standardized medication plan (MP) was recently enacted into German law (§ 31a SGB V). The purpose of our study was to assess if patients with chronic diseases requiring polymedication understand the standardized MP and can transfer the given information into practice. 100 patients who took at least five medicines regularly were prospectively included in a cross-sectional study: 50 patients with the primary diagnosis chronic heart failure (CHF), and 50 with diabetes mellitus type 2 (DMT2). We performed a structured test-scenario studying the handling of a provided MP then evaluated the execution of the information on the MP by filling pill boxes and requested patients' opinion. An established weighted scoring system, the "Evaluation Tool to test the handling of the Medication Plan" (ET-MP) was applied to quantitate the ability of the patients to handle the MP. In addition, signs of depression, cognitive function and self-care behavior in chronic heart failure were characterized using the PHQ-9, Mini-Cog, and G9-EHFScB-9 questionnaires, respectively. The understanding of the MP was poor and irrespective of the underlying primary diagnosis. Only 32% of all patients were able to handle the MP without difficulties (ET-MP score >90%), the median ET-MP score was 83 [(IQR) 50-98]. Comprehension of the MP was better in patients aged <70 years compared to ≥70 years (p<0.01). Patients ≥10 years of education achieved higher ET-MP results than patients with <10 years of education (p<0.01). Patients with signs of cognitive impairment exhibited significantly lower ET-MP scores than patients without cognitive impairment (p<0.001). There were no significant correlations of the ET-MP score with number of daily medications, living situation, sex, the Charlson Comorbidity Index, the PHQ-9 score, and use of a dosing aid or possession of a medication list.

Renal denervation for treatment of uncontrolled hypertension in an Asian population: results from the Global SYMPLICITY Registry in South Korea (GSR Korea).

Reports detailing the response of hypertensive patients to renal denervation (RDN) in Asian patients are limited. We evaluated 6- and 12-month outcomes after RDN in an Asian population and compared outcomes to a primarily Caucasian population. The Global SYMPLICITY Registry (GSR) is a prospective, all-comer, worldwide registry that evaluates the safety and effectiveness of RDN and includes the Korean registry substudy (GSR Korea) and a Caucasian subset (GSR Caucasian). Given differences in baseline characteristics among GSR Korea (n=93) as compared with GSR Caucasian (n=169) patients, including lower baseline office systolic blood pressure (SBP), lower body mass index and differences in medications, propensity score adjustment was performed when comparing the change in SBP between subsets. The 6- and 12-month change in SBP in GSR Korea was -19.4±17.2 and -27.2±18.1 mm Hg, respectively (P<0.001 for both vs baseline). GSR Caucasian had a SBP change similar to GSR Korea at 6 months (-20.9±21.4 mm Hg, unadjusted P=0.547, adjusted P=0.998), whereas at 12 months the change was significantly less pronounced (-20.1±23.9 mm Hg, unadjusted P=0.004, adjusted P=0.002). There were no protocol-defined procedure-related adverse events and no chronic adverse events associated with the device in an Asian population. RDN provided a significant reduction in 6- and 12-month office SBP among Asian patients, with a favorable safety profile. The 12-month SBP reduction was larger than that observed in Caucasian patients.

[Chronic heart failure : current guideline recommendations and innovations]. / Chronische Herzinsuffizienz : Aktuelle Leitlinienempfehlungen und neue Erkenntnisse.

Chronic heart failure is one of the most common chronic diseases worldwide with increasing prevalence and incidence. Due to the high morbidity and mortality a standardized and evidence-based therapy is essential. The present article gives an overview of the innovations from 2014 based on the current guidelines of the European Society of Cardiology. First, improvements of established medication regimens regarding beta blockers, mineralocorticoid receptor antagonists and treatment options for heart rate reduction and disease management programs will be explained. Second, new pharmacological developments, such as the new substance class of angiotensin receptor blockers and neprilysin inhibitors (ARNI), will be presented. Finally, new insights into common comorbidities of chronic heart failure patients, such as atrial fibrillation and hyperkalemia will be discussed.

Resting heart rate is associated with renal disease outcomes in patients with vascular disease: results of the ONTARGET and TRANSCEND studies.

BACKGROUND: Resting heart rate (RHR) is associated with cardiovascular disease outcomes in high-risk patients. It is not known whether RHR is predictive of renal outcomes such as albuminuria, end-stage renal disease (ESRD) or doubling of creatinine. We evaluated whether RHR could predict renal endpoints in patients at a high risk of cardiovascular disease. We also tested the effects of RHR at different levels of systolic blood pressure (SBP). METHODS: We analysed data from 28 757 patients in the ONTARGET and TRANSCEND trials. RHR and SBP were available for a mean of 4.9 ± 0.4 visits (range 3-5) within the first 2 years of the studies. Albuminuria was determined at baseline, at 2 years and at study end. RESULTS: Mean RHR was predictive of incident micro-albuminuria [hazard ratio (HR) for RHR ≥80 vs. <60 beats min(-1) 1.49, 95% confidence interval (CI) 1.29-1.71, P < 0.0001], incident macro-albuminuria (HR 1.84, 95% CI 1.39-2.42, P < 0.0001), doubling of creatinine (HR 1.47, 95% CI 1.00-2.17, P = 0.050) and ESRD (HR 1.78, 95% CI 1.00-3.16, P = 0.050), and the combined renal end-point (HR 1.51, 95% CI 1.32-1.74, P < 0.0001). Associations were robust at SBPs from <120 to ≥150 mmHg, with the lowest risk at a SBP of 130-140 mmHg. CONCLUSION: Resting heart rate is a potent predictor of these renal outcomes, as well as their combination, in patients with cardiovascular disease. RHR at all SBP levels should be considered as a possible renal disease risk predictor and should be investigated as a treatment target with RHR-reducing agents.

[Interventional hypertension therapy in diabetes mellitus. Effects on blood pressure and glucose metabolism?]. / Interventionelle Hypertonietherapie bei Diabetes mellitus. Effekte auf Blutdruck und Glukosestoffwechsel?

Hypertension is the most common chronic cardiovascular disease with increasing prevalence all over the world. Despite the availability of many effective antihypertensive drugs, blood pressure control to target values remains low. In the pathophysiology of therapy resistant hypertension, increased activity of the sympathetic nervous system with an imbalance between sympathetic and parasympathetic activity has been identified as a main contributor to the development and maintenance of hypertension. Catheter-based denervation of the renal sympathetic nerves has been described as reducing blood pressure and decreasing sympathetic activity in patients with resistant hypertension. Supplementary beneficial effects on common cardiovascular comorbidities, such as diabetes type 2, have been reported. The present review aims to give an overview about percutaneous renal denervation for treatment of hypertension and potential new therapeutic options to improve glycemic control.

[Dialysis and ultrafiltration therapy in patients with cardio-renal syndrome: recommendations of the working group "heart-kidney" of the German Cardiac Society and the German Society of Nephrology]. / Dialyse- und Ultrafiltrationsverfahren bei kardio-renalem Syndrom. Empfehlung der Arbeitsgemeinschaft "Herz--Niere" der Deutschen Gesellschaft für Kardiologie--Herz- und Kreislaufforschung e.V. und der Deutschen Gesellschaft für Nephrologie e.V.

Renal failure is common in patients with severe heart failure. This complex pathophysiological interaction has been classified as cardio-renal syndrome. In these patients hydropic decompensation is the main cause of hospitalization. In patients with refractory heart failure, characterized by diuretic resistance and congestion due to volume overload, ultrafiltration has to be considered. In acute decompensated heart failure with worsening of renal function, extracorporeal ultrafiltration is the preferred treatment modality. On the other hand, patients suffering from chronic decompensated heart failure, particularly patients with ascites, will profit from the treatment specific advantages of peritoneal ultrafiltration. Prerequisite for an optimized care of patients with cardio-renal syndrome is the close collaboration among intensive care doctors, cardiologists and nephrologists.

Interpreting treatment-induced blood pressure reductions measured by ambulatory blood pressure monitoring.

It is well known that 24-h ambulatory blood pressure monitoring (ABPM) provides a more accurate picture of a patient's blood pressure (BP) compared with clinic BP measurement. Twenty-four-hour ABPM better predicts hypertension-related risks such as end-organ damage including left ventricular hypertrophy, cardiovascular (CV) events and mortality. Threshold BP values for hypertension based on 24-h ABPM results have been established, including daytime and night-time averages. Nevertheless, the relationship between 24-h ABPM and clinic BP measurement in patients on antihypertensive therapy, and in particular how each may change in response to antihypertensive therapy, is less clear. This review will provide an overview of current knowledge on the relation between clinic BP and ambulatory BP reductions in clinical trials on antihypertensive therapies. Reduction in CV risk and its correlation with the magnitude of reduction in both clinic and ambulatory BP are explored. The most striking result is that reduction in clinic BP and ambulatory BP do not correspond in a 1:1 fashion, that is, smaller changes in 24-h ABPM correspond to significantly larger changes in clinic BP.

[Heart and kidneys. Renal denervation as therapy for hypertension]. / Herz und Niere. Hochdrucktherapie durch renale Denervation.

Arterial hypertension is a major cardiovascular risk factor with a high prevalence in western industrial countries and the proportion of patients with blood pressure at target values remains low. Patients with therapy-resistant hypertension, defined as failure to achieve target blood pressure despite a triple antihypertensive drug regimen including a diuretic, are at very high risk which supports the need for greater efforts towards improving hypertension outcomes in this population. Secondary causes of hypertension are often found in patients with resistant hypertension. Activation of the sympathetic nervous system has been identified as a main contributor to the development and progression of high blood pressure. Catheter-based renal denervation offers a new interventional treatment option resulting in a significant long-term reduction in blood pressure (> 36 months) and increased blood pressure control (up to 40% of the treated population). The basis for successful treatment is an appropriate patient selection, including life-style modification, exclusion of pseudoresistance, termination of substances increasing blood pressure and an optimized drug treatment. Further clinical studies are warranted and ongoing to determine the role of renal denervation in antihypertensive treatment.

Treatment of hypertension in the elderly: data from an international cohort of hypertensives treated by cardiologists.

Hypertension in the elderly is a major risk factor for cardiovascular disease. We aimed to analyze determinants of blood pressure (BP) control across different age groups. Population of a large global survey on hypertension treatment and control including 18927 patients was analyzed. A logistic regression analysis was conducted to estimate BP control rates and the prevalence of antihypertensive drug usage according to age. Systolic BP control decreased from 29.6% (95% confidence intervals (CI) 26.0;33.5) at 18-40 years to 22.4% (20.8;24.2) at >75 years (P<0.0001), and diastolic BP control increased from 31.6% (27.9;35.6) to 57.3% (55.2;59.3), respectively (P<0.0001). BP control was worse in diabetic patients, but did not differ substantially with co-morbid conditions, except for a better control in patients with myocardial infarction (MI) (P<0.05). The use of ≥ 3 antihypertensive drugs increased with age from 16.1 to 37.8% (P<0.0001) due to a more frequent use of loop diuretics (P<0.0001), thiazides (P<0.0001), angiotensin-converting enzyme (ACE) inhibitors (P<0.0001) and calcium channel blockers (P<0.0001). About one third of patients received non-guideline-recommended drug-drug combinations. BP control is largely unsuccessful with increasing age. Owing to frequent inadequacies in the combination of antihypertensive drugs, future guidelines and educational programs should devote increased attention to the choice of optimal drug-drug combinations in the elderly.

[Revascularization of renal artery stenosis--state of the art]. / Revaskularisation der Nierenarterienstenose: State of the Art.

Atherosclerotic renal artery stenoses (aRAS) are often associated with an aorto-iliac type of peripheral occlusive artery disease and may result in deterioration of blood pressure control, chronic kidney disease and myocardial dysfunction. Stenting of aRAS has almost replaced surgical revascularisation. However, the benefit of endovascular treatment of aRAS was challenged by the results of the STAR and ASTRAL trials demonstrating similar outcomes for revascularisation and conservative treatment. Due to severe limitations in trial design, the study results can only be applied to a small proportion of the affected patient population. A clinical benefit of renal stenting can only be expected if the indication for endovascular procedure was correct, in particular if the hemodynamic relevance of the lesion was verified by non-invasive (duplex) or invasive (pressure gradient) methods. The known predictors (pulse pressure > 50 ± 10 mmHg, high diastolic blood pressure, elevated BNP levels, renal insufficiency) for clinical success are often not sufficiently implemented in the decision-making process. Unquestioned by international guidelines is the indication for revascularisation of aRAS of a single functioning kidneys, severe bilateral lesions, resistant hypertension, worsening of renal function, and in each kind of severe RAS of non-atherosclerotic nature.

[Expert consensus statement on interventional renal sympathetic denervation for hypertension treatment]. / Interventionelle renale Sympathikusdenervation zur Behandlung der therapieresistenten Hypertonie.

This commentary summarizes the expert consensus and recommendations of the working group 'Herz und Niere' of the German Society of Cardiology (DGK), the German Society of Nephrology (DGfN) and the German Hypertension League (DHL) on renal denervation for antihypertensive treatment. Renal denervation is a new, interventional approach to selectively denervate renal afferent and efferent sympathetic fibers. Renal denervation has been demonstrated to reduce office systolic and diastolic blood pressure in patients with resistant hypertension, defined as systolic office blood pressure ≥ 160 mm Hg and ≥ 150 mm Hg in patients with diabetes type 2, which should currently be used as blood pressure thresholds for undergoing the procedure. Exclusion of secondary hypertension causes and optimized antihypertensive drug treatment is mandatory in every patient with resistant hypertension. In order to exclude pseudoresistance, 24-hour blood pressure measurements should be performed. Preserved renal function was an inclusion criterion in the Symplicity studies, therefore, renal denervation should be only considered in patients with a glomerular filtration rate > 45 ml/min. Adequate centre qualification in both, treatment of hypertension and interventional expertise are essential to ensure correct patient selection and procedural safety. Long-term follow-up after renal denervation and participation in the German Renal Denervation (GREAT) Registry are recommended to assess safety and efficacy after renal denervation over time.