Sven A.F. Tulner

OrthoDirect | De Schouderkliniek · Orthopedic Surgery

Objective To systematically review the literature to analyze the effect of lumbar elastic tape application on trunk mobility, surpassing the minimal detectable change of the used outcome measurement tool, and to analyze the additional effect of applied tension and direction of elastic tape application in low back pain and healthy subjects. Data so...

Radical resection of primary or solitary secondary malignant sternal tumours is indicated in patients without metastases. Sternal reconstruction may be indicated in large defects to prevent pulmonary complications, to achieve protection of intra-thoracic organs and to obtain a good aesthetic result. In this article, a modified surgical technique is...

Recently we coined the term supercutaneous plating using a locking compression plate (LCP) as an external fixator. The use of this technique in peri-articular areas is facilitated by the development of anatomical plates with various screw sizes. The purpose of this report is to describe our results using the metaphyseal locking plate (LCP) as an ex...

Restrictive mitral annuloplasty (RMA) is increasingly applied to treat functional mitral regurgitation in heart failure patients. Previous studies indicated beneficial clinical effects with low recurrence rates. However, the underlying pathophysiology is complex and outcome in terms of left ventricular function is not well known. We investigated ch...

Previous studies demonstrated beneficial short-term effects of surgical ventricular restoration on mechanical dyssynchrony and left ventricular function and improved midterm and long-term clinical parameters. However, long-term effects on systolic and diastolic left ventricular function are still largely unknown. We studied 9 patients with ischemic...

Previous studies have demonstrated beneficial acute effects of surgical ventricular restoration (SVR) on mechanical dyssynchrony and left ventricular (LV) function, and improved mid- and long-term clinical parameters. However, chronic effects on systolic and diastolic LV function are still largely unknown. We studied 9 patients with ischemic dilate...

Heart failure patients are increasingly subjected to surgery. Left ventricular (LV) function is generally assessed in awake patients, but intra-operative LV function is not well studied. To investigate the relation between LV function indices obtained in the catheterization laboratory and those obtained intra-operatively. We enrolled 11 patients wi...

Treatment of heart failure by advanced surgical procedures such as ventricular restoration (SVR) and restrictive mitral annuloplasty (RMA) is increasingly applied. We studied clinical efficacy of heart failure surgery in patients with severe heart failure. Thirty-three patients (New York Heart Association (NYHA) class III/IV, left ventricular eject...

Surgical ventricular restoration is increasingly applied in patients with ischemic dilated cardiomyopathy. Previous studies show promising results with regard to survival and clinical outcome. However, a comprehensive midterm analysis of this approach on left ventricular (LV) and right ventricular function is not yet available. We investigated bive...

Surgical ventricular restoration aims at improving cardiac function by normalization of left ventricular shape and size. Recent studies indicate that surgical ventricular restoration is highly effective with an excellent 5-year outcome in patients with ischemic dilated cardiomyopathy. We used pressure-volume analysis to investigate acute changes in...

We thank Knaapen et al for their interest in our work.1 We agree with them that our simple approach to calculating end-systolic elastance may be considered a limitation, and we value their suggestion that we apply single-beat algorithms to estimate end-systolic elastance from steady-state pressure-volume loops. Although load interventions by caval...

Acute hemodynamic effects of cardiac resynchronization therapy (CRT) were reported previously, but detailed invasive studies showing hemodynamic consequences of long-term CRT are not available. We studied 22 patients scheduled for implantation of a CRT device based on conventional criteria (New York Heart Association class III or IV, left ventricul...

Recent studies show beneficial long-term effects of restrictive mitral annuloplasty in patients with end-stage heart failure. However, concerns are raised about possible adverse effects on early postoperative systolic and diastolic function, which might limit application of this approach in patients with heart failure. Therefore we evaluated the ac...

Recent studies indicate that normothermic cardiopulmonary bypass (CPB) with intermittent antegrade warm blood cardioplegia (IAWBC) may have metabolic and clinical advantages, but limited data exist on its effects on myocardial function. Therefore, we investigated the acute effects of this approach on systolic and diastolic left ventricular function...

The treatment of posttraumatic osteomyelitis of the tibia requires meticulous debridement and adequate soft tissue coverage. At our institution, we perform a staged procedure consisting of surgical debridement followed by muscle coverage. If necessary, implantation of a cancellous iliac bone graft was always performed as a three-stage treatment. We...

Mechanical dyssynchrony is an important codeterminant of cardiac dysfunction in heart failure. Treatment, either medical, surgical, or by pacing, may improve cardiac function partly by improving mechanical synchrony. Consequently, the quantification of ventricular mechanical (dys)synchrony may have important diagnostic and prognostic value and may...

Unlabelled: Interpretation of perioperative measurements of cardiac function during cardiac surgery is complicated by changes in loading conditions induced by anesthesia, cardiopulmonary bypass (CPB), and the surgical procedure itself. Quantification of left ventricular (LV) function by pressure-volume relations as obtained by the conductance cath...

Design considerations and description of manufacturing techniques used in production of compressor blades made of carbon fiber-epoxy resin prepreg are followed by presentation of test results performed on these engineering parts. It was found that the basic flexural frequency is almost twice as great as that of a similar steel blade. The alternatin...

In this thesis, we evaluated the acute and chronic hemodynamic effects of non-pharmacological heart failure therapies. In particular, the effects of surgical treatment and biventricular pacing therapy were investigated by left ventricular pressure-volume loop analyses. We demonstrated that restrictive mitral annuloplasty effectively restored mitral...