Dieter Mayer

Publications (60) View all

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  Available from: Dieter Mayer

  Article: Branch ligatures and blood aspiration for post-traumatic superficial temporal artery pseudoaneurysm: surgical technique.

  Zoran Rancic, Felice Pecoraro, Gianluigi Nigro, Roger Simon, Thomas Frauenfelder, Dieter Mayer, Mario Lachat
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  ABSTRACT: The aim of this study is to report a new minimally invasive technique of superficial temporal artery (STA) pseudoaneurysm treatment. Several surgical options have been employed to treat STA pseudoaneurysms. To address this rare condition, the employed techniques are ligation and excision of the aneurysm, endovascular coil embolization or percutaneous ultrasound-guided thrombin injection. Between techniques no significant differences are reported in terms of outcomes. The decision to adopt a technique depends on STA pseudoaneurysm morphology and surgeon preference. In the present report, STA pseudoaneurysm afferent and efferent branches were identified by ultrasound in a 92-year-old female. Under local anaesthesia, these branches were ligated through small skin incisions. STA pseudoaneurysm decompression was obtained by an 'over the needle aspiration'. A compressive dressing was left in space for 48 h.
  General Thoracic and Cardiovascular Surgery 02/2013;
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  Article: Alginate Dressing and Polyurethane Film Versus Paraffin Gauze in the Treatment of Split-Thickness Skin Graft Donor Sites: A Randomized Controlled Pilot Study.

  Dominik Kaiser, Jürg Hafner, Dieter Mayer, Lars E French, Severin Läuchli
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  ABSTRACT: OBJECTIVES:: To compare postoperative healing of split-thickness skin graft (STSG) donor sites using traditional dressings (paraffin gauze) or modern wound dressings (alginate dressing and polyurethane film) in a randomized controlled trial. METHOD:: Thirty patients were randomly assigned to treatment of an STSG donor site with an alginate dressing and a polyurethane film or nonadherent paraffin gauze. Outcome variables were pain (measured with a visual analog scale), amount of dressing changes, healing time, cosmetic outcome, treatment costs, and overall satisfaction with the procedure. RESULTS:: There was no significant difference in pain (postoperative day 1: 2.1 vs 1.2, P = .26; postoperative days 5-7: 1.0 vs 0.9, P = .47; final removal: 1.9 vs 1.0, P = .19) and time to healing (18.1 vs 15.4 days, P = .29) between alginate/polyurethane film dressing and nonadherent paraffin gauze. The semiocclusive dressings with polyurethane film required multiple dressing changes, whereas the nonadherent paraffin gauze could be left in place until complete epithelialization. Treatment costs were substantially lower for paraffin gauze. CONCLUSIONS:: Semiocclusive dressings with alginate dressings and polyurethane film showed no advantages over treatment with paraffin gauze. With lower costs and better patient acceptance, paraffin gauze dressings were the preferred treatment for STSG donor sites.
  Advances in skin & wound care 02/2013; 26(2):67-73.
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  Article: CT Angiography at 24 Months Demonstrates Durability of EVAR With the Use of Chimney Grafts for Pararenal Aortic Pathologies.

  Konstantinos P Donas, Felice Pecoraro, Theodosios Bisdas, Mario Lachat, Giovanni Torsello, Zoran Rancic, Martin Austermann, Dieter Mayer, Thomas Pfammatter, Stefan Puchner
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  ABSTRACT: Purpose : To present the 24-month radiological follow-up data for patients with pararenal aortic pathologies treated with chimney and periscope grafts during endovascular repair. Methods : Between January 2008 and December 2011, 124 high-risk patients with complex pararenal aortic pathologies were treated using the chimney technique at 2 European vascular and cardiovascular centers with advanced experience of the described technique. In particular, 50 patients were treated at Site 1 and 74 at Site 2. Forty (32.2%) patients (32 men; mean age 79.2±4.9 years) completed computed tomographic angiography follow-up at 24 months postoperatively. Results : The overall technical success was 100%, and the early- and midterm procedure-related mortality was 0%. Three (2.4%) patients had a perioperative type Ia endoleak that persisted; two were treated by transbrachial perigraft embolization and cuff implantation. The last patient is under radiological surveillance due to a "low-flow" type Ia endoleak and stable sac size. A type II endoleak was detected in 7 (5.6%) patients. During the 2-year follow-up, significant shrinkage (>5 mm; n=22) or stable aneurysm diameter (n=14) was seen in 36 (90%) of the cases. Overall, mean aneurysm sac shrinkage was 12% (p=0.002) and 10% (p=0.014) for the 2 centers, respectively (overall p=0.008). The causes for sac progression in the 4 (10%) patients were a type Ia endoleak, 2 type II endoleaks, and endotension. Conclusion : The present study demonstrates that the use of chimney and/or periscope endografts for pararenal aortic pathologies achieves and maintains successful exclusion of the aneurysm in 90% of the cases at 24 months of radiological follow-up. In centers experienced with this approach, the chimney technique may represent a reliable therapeutic modality in selected patients.
  Journal of Endovascular Therapy 02/2013; 20(1):1-6. · 2.86 Impact Factor
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  Article: Martorell Hypertensive Ischemic Leg Ulcer: An Underdiagnosed Entity©

  Afsaneh Alavi, Dieter Mayer, Jürg Hafner, R Gary Sibbald
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  ABSTRACT: PURPOSE:: To enhance the learner's competence with knowledge of care for patients with Martorell hypertensive ischemic leg ulcers. TARGET AUDIENCE:: This continuing education activity is intended for physicians and nurses with an interest in skin and wound care. OBJECTIVES:: After participating in this educational activity, the participant should be better able to:1. Demonstrate knowledge of the pathogenesis of Martorell hypertensive ischemic leg ulcers (HYTILU) and differentiation of this ulcer from other causes of painful leg ulcers.2. Apply current treatment recommendations for Martorell HYTILU to patient case scenarios. ABSTRACT: Martorell hypertensive ischemic leg ulcer represents rapidly progressive and extremely painful ulcers that are frequently underdiagnosed. These occur most commonly on the lateral-dorsal calf and are associated with hypertension and diabetes. This article will synthesize a review of the literature for the accurate diagnosis and treatment of this painful debilitating condition.
  Advances in skin & wound care 12/2012; 25(12):563-572.
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  Article: Technique of supraceliac balloon control of the aorta during endovascular repair of ruptured abdominal aortic aneurysms.

  Todd L Berland, Frank J Veith, Neal S Cayne, Manish Mehta, Dieter Mayer, Mario Lachat
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  ABSTRACT: Endovascular aneurysm repair is being used increasingly to treat ruptured abdominal aortic aneurysms (RAAAs). Approximately 25% of RAAAs undergo complete circulatory collapse before or during the procedure. Patient survival depends on obtaining and maintaining supraceliac balloon control until the endograft is fully deployed. This is accomplished with a sheath-supported compliant balloon inserted via the groin contralateral to the side to be used for insertion of the endograft main body. After the main body is fully deployed, a second balloon is placed within the endograft, and the first balloon is removed so that extension limbs can be placed in the contralateral side. A third balloon can be placed via the contralateral side and ipsilateral extensions deployed as necessary. This technique of supraceliac balloon control is important to achieving good outcomes with RAAAs. In addition to minimizing blood loss, this technique minimizes visceral ischemia and maintains aortic control until the aneurysm rupture site is fully excluded.
  Journal of vascular surgery: official publication, the Society for Vascular Surgery [and] International Society for Cardiovascular Surgery, North American Chapter 11/2012; · 3.52 Impact Factor