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Gießen, Germany

Maier G.S.,Justus Liebig University | Maier G.S.,Johannes Gutenberg University Mainz | Maier G.S.,Universitatsklinikum Giessen | Horas K.,University of Sydney | And 4 more authors.
International Orthopaedics | Year: 2014

Purpose: Vitamin D is increasingly being recognized as an important mediator of immune function and may have a preventive role in the pathogenesis of periprosthetic joint infection. To the best of our knowledge, no other study has examined possible associations between periprosthetic joint infection and vitamin D deficiency. We investigated the rate of vitamin D deficiency in patients treated for periprosthetic joint infection and whether vitamin D deficiency is independent of other risk factors for vitamin D deficiency in patients with periprosthetic joint infection. Methods: Serum 25-hydroxyvitamin D (25OHD) levels of every patient scheduled to receive a total prosthesis either of the hip, knee, or shoulder in the orthopaedic department of the Johannes-Guttenberg-University Hospital in Mainz, Germany (109 patients), were measured after admission. Furthermore, serum 25OHD levels were measured for every patient presenting with periprosthetic joint infection (n=50) or aseptic loosening of the prosthesis (n=31) scheduled to undergo revision surgery. The prevalence of normal (>30 ng/ml), insufficient (20-30 ng/ml), and deficient (<20 ng/ml) 25OHD levels was determined. Results: All tested patient subgroups showed low vitamin D levels. Statistical analysis found no significant difference in vitamin D levels comparing patients with prosthesis and patients with aseptic prosthesis loosening (p=0.58). Significant differences in 25OHD levels were found comparing patients with periprosthetic joint infection and patients scheduled for primary arthroplasty (p<0.001). In addition, we found a significant difference (p<0,001) in 25OHD levels of patients with periprosthetic joint infection compared with patients with aseptic prosthesis loosening. Conclusion: We found a high frequency of vitamin D deficiency in patients being treated by primary arthroplasty and those with aseptic joint prosthetic loosening and periprosthetic joint infection. Vitamin D deficiency was severe in patients with periprosthetic joint infection. © 2014 Springer-Verlag. Source


Bajanowski T.,Universitatsklinikum Essen | Puschel K.,Universitatsklinikum Hamburg Eppendorf | Dettmeyer R.,Universitatsklinikum Giessen
Pathologe | Year: 2012

Sudden cardiac death is one of the most common causes of death and a significant number of sudden deaths occurs especially in young people. Sudden cardiac death is also frequently represented in forensic autopsy practice. In such cases pathological findings in the heart can often explain the reason for the acute death. These pathological changes include not only myocardial infarction, coronary thrombosis and all forms of myocarditis/endocarditis but also rare diseases, such as hereditary structural or arrythmogenic anomalies, lesions of the cardiac conduction system or primary cardiac tumors. © Springer-Verlag 2012. Source


Maier G.S.,Justus Liebig University | Maier G.S.,Johannes Gutenberg University Mainz | Maier G.S.,Universitatsklinikum Giessen | Jakobs P.,Johannes Gutenberg University Mainz | And 3 more authors.
Clinical Orthopaedics and Related Research | Year: 2013

Background: Vitamin D plays an essential role in bone health and muscle function. Some studies have shown a widespread rate of vitamin D deficiency in the general population, but few have reported on the vitamin D status of orthopaedic patients. Questions/purposes: We investigated (1) the extent of hypovitaminosis D in orthopaedic patients, (2) seasonal variations in vitamin D levels, and (3) possible risk factors for insufficient vitamin D levels. Methods: Vitamin D levels in 1119 patients consecutively admitted to an orthopaedic surgery department in 2011 were measured. To investigate the correlation between climate factors and vitamin D levels, the sunshine hours for each month in 2011 were collected by Deutscher Wetterdienst (the German weather service) in the region where most tested patients lived. The prevalence of normal (> 30 ng/mL), insufficient (20-30 ng/mL), and deficient (< 20 ng/mL) 25-hydroxyvitamin D levels was determined. Univariate and multivariate analyses were used to assess risk factors for insufficient vitamin D levels. Results: Overall, 84% of patients had insufficient levels of vitamin D and 60% were vitamin D deficient. Only 15% were in the target range of 30 to 60 ng/mL. The prevalence of low vitamin D levels was greater during winter and months with fewer sunshine hours. Vitamin D levels did not vary according to age, sex, and disease. Individuals with obesity, hypertension, and osteoporosis were more likely to have low vitamin D levels compared with their healthy counterparts. Conclusions: There is an alarmingly high rate of hypovitaminosis D and vitamin D deficiency among orthopaedic patients in this region of Germany, whose latitude (50 N) is approximately the same as those of Vancouver (49, 15' N) and Paris (48, 51' N). Given the well-known effects on bone metabolism and muscle health, low vitamin D levels may negatively affect patients. Screening and treating hypovitaminosis D appears to be important in this patient population. Level of Evidence: Level II, prognostic study. See the Guidelines for Authors for a complete description of levels of evidence. © 2013 The Association of Bone and Joint Surgeons®. Source


Stummer W.,Universitatsklinikum Munster | Tonn J.-C.,Ludwig Maximilians University of Munich | Mehdorn H.M.,Universitatsklinikum Schleswig Holstein Campus Kiel | Nestler U.,Universitatsklinikum Giessen | And 4 more authors.
Journal of Neurosurgery | Year: 2011

Object. Accumulating data suggest more aggressive surgery in patients with malignant glioma to improve outcome. However, extended surgery may increase morbidity. The randomized Phase III 5-aminolevulinic acid (ALA) study investigated 5-ALA-induced fluorescence as a tool for improving resections. An interim analysis demonstrated more frequent complete resections with longer progression-free survival (PFS). However, marginal differences were found regarding neurological deterioration and the frequency of additional therapies. Presently, the authors focus on the latter aspects in the final study population, and attempt to determine how safety might be affected by cytoreductive surgery. Methods. Patients with malignant gliomas were randomized for fluorescence-guided (ALA group) or conventional white light (WL) (WL group) microsurgery. The final intent-to-treat population consisted of 176 patients in the ALA and 173 in the WL group. Primary efficacy variables were contrast-enhancing tumor on early MR imaging and 6-month PFS. Among secondary outcome measures, the National Institutes of Health Stroke Scale (NIH-SS) score and the Karnofsky Performance Scale (KPS) score were used for assessing neurological function. Results. More frequent complete resections and improved PFS were confirmed, with higher median residual tumor volumes in the WL group (0.5 vs 0 cm3, p = 0.001). Patients in the ALA group had more frequent deterioration on the NIH-SS at 48 hours. Patients at risk were those with deficits unresponsive to steroids. No differences were found in the KPS score. Regarding outcome, a combined end point of risks and neurological deficits was attempted, which demonstrated results in patients in the ALA group to be superior to those in participants in the WL group. Interestingly, the cumulative incidence of repeat surgery was significantly reduced in ALA patients. When stratified by completeness of resection, patients with incomplete resections were quicker to deteriorate neurologically (p = 0.0036). Conclusions. Extended resections performed using a tool such as 5-ALA-derived tumor fluorescence, carries the risk of temporary impairment of neurological function. However, risks are higher in patients with deficits unresponsive to steroids. Source


Beetz R.,Johannes Gutenberg University Mainz | Wagenlehner F.,Universitatsklinikum Giessen
Urologe - Ausgabe A | Year: 2013

In infants and young children, urinary tract infections (UTI) often present with unspecific symptoms. Appropriate techniques of urine sampling play an important role for accurate microbiological diagnosis. In infants urine sampling by bladder puncture or transurethral catheter is recommended. In young infants with suspected pyelonephritis, calculated antibiotic treatment should be initiated parenterally with a combination of a third generation cephalosporin or an aminoglycoside with ampicillin. After the age of 3-6 months group 3 oral cephalosporins can be used in uncomplicated pyelonephritis. With the first febrile UTI early sonography is recommended to provide information about renal parenchymal involvement and to exclude malformations of the kidneys and urinary tract. Strategies for the recognition of vesicoureteral reflux and renal damage are under discussion. Recently published guidelines by the American Academy of Pediatrics for the diagnosis and management of UTI in febrile children and infants aged 2-24 months will most likely influence the still pending German guidelines. © 2013 Springer-Verlag Berlin Heidelberg. Source

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