scholarly journals Mid-term results of endoscopic perforator vein interruption for chronic venous insufficiency: Lessons learned from the North American Subfascial Endoscopic Perforator Surgery registry

1999 ◽  
Vol 29 (3) ◽  
pp. 489-502 ◽  
Author(s):  
Peter Gloviczki ◽  
John J. Bergan ◽  
Jeffrey M. Rhodes ◽  
Linda G. Canton ◽  
Scott Harmsen ◽  
...  
2008 ◽  
Vol 10 (4) ◽  
pp. 631-642 ◽  
Author(s):  
Susan M. Chang ◽  
Kathleen R. Lamborn ◽  
John G. Kuhn ◽  
W.K. Alfred Yung ◽  
Mark R. Gilbert ◽  
...  

2021 ◽  
Author(s):  
Emily Perchlik ◽  
Donald MacDonald

<p>North American bridge design is dominated by a culture of risk aversion and economic constraint. While objectives of safety and efficiency should be the baseline of any project, they are sometimes set as the sole benchmarks for a successful bridge design within the North American context. When the end game is to simply meet the baseline of safety and efficiency, goals related to user experience and aesthetic impacts are often considered superfluous. This paper showcases lessons learned from designing within this context.</p><p>Stories from bridge designs showcase the ups and downs of bootstrapping higher design goals into footbridge projects in the Wild West.</p>


2011 ◽  
Vol 26 (5) ◽  
pp. 197-202 ◽  
Author(s):  
J T Christenson ◽  
C Prins ◽  
G Gemayel

Objective Increased intramuscular and subcutaneous tissue pressures are often found in patients with severe chronic venous insufficiency venous ulcer disease. Additional subcutaneous para-tibial fasciotomy promotes early ulcer healing. This study evaluates the mid-term effect of eradication of superficial reflux with additional fasciotomy in patients with increased tissue pressures. Method Between January 2006 and June 2009, 58 patients underwent fasciotomy. Tissue pressures (intramuscular and subcutaneous) were measured. Sixty-nine limbs with 91 venous ulcers were treated. Mean duration of the venous ulcer was 3.4 years. Underlying disease was post-thrombotic syndrome (PT) in 19 patients (33%, 24 limbs, 27 ulcers) and non-post-thrombotic (non-PT) severe chronic venous insufficiency in 39 (67%, 45 limbs, 64 ulcers). All patients were C6 at the time of surgery. Preoperative tissue pressures were 23.5 ± 6.1 mmHg (intramuscularly) and 9.8 ± 3.2 mmHg (subcutaneously). Results Ninety ulcers (99%) healed postoperatively (42 with and 48 without skin grafting). Tissue pressures significantly decreased following surgery and remained low at three months postoperatively. Ten ulcers in six patients recurred six to 20 months postoperatively (11%), resulting in 86.4 actuarial freedom from venous ulcer recurrence at three years following surgery. Four patients (1 non-PT and 3 PT) had re-fasciotomy; all healed initially but two ulcers (2 patients, PT) recurred at 11 and 12 months. Those patients underwent re-fasciotomy, one healed and one recurred six months later. Conclusion Eradication of superficial reflux with additional subcutaneous fasciotomy for chronic and recurrent venous ulcer improves ulcer healing or success of skin grafting. Mid-term results are excellent particularly in patients with non-PT disease. Recurrence is more frequently seen in patients with PT syndrome. In patients with ulcer recurrence and high tissue pressures, re-fasciotomy can be helpful to promote healing, particularly in patients with primary venous disease.


2014 ◽  
Vol 7 (1) ◽  
pp. 63-82 ◽  
Author(s):  
J.D. Miller ◽  
A.W. Schaafsma ◽  
D. Bhatnagar ◽  
G. Bondy ◽  
I. Carbone ◽  
...  

This paper summarises workshop discussions at the 5th international MYCORED meeting in Ottawa, Canada (June 2012) with over 200 participants representing academics, government and industry scientists, government officials and farming organisations (present in roughly equal proportions) from 27 countries. Workshops centred on how mycotoxins in food and feed affect value chains and trade in the region covered by the North American Free Trade Agreement. Crops are contaminated by one or more of five important mycotoxins in parts of Canada and the United States every year, and when contaminated food and feed are consumed in amounts above tolerable limits, human and animal health are at risk. Economic loss from such contamination includes reduced crop yield, grain quality, animal productivity and loss of domestic and export markets. A systematic effort by grain producers, primary, transfer, and terminal elevators, millers and food and feed processers is required to manage these contaminants along the value chain. Workshops discussed lessons learned from investments in plant genetics, fungal genomics, toxicology, analytical and sampling science, management strategies along the food and feed value chains and methods to ameliorate the effects of toxins in grain on animal production and on reducing the impact of mycotoxins on population health in developing countries. These discussions were used to develop a set of priorities and recommendations.


2020 ◽  
Vol 92 (2) ◽  
pp. 46-50
Author(s):  
Magadi Rangaswamy Keshav Murthy ◽  
Nikhil Gupta ◽  
Arun Kumar Gupta ◽  
Abu Masood Ansari ◽  
Dinesh Kardam ◽  
...  

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