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Dr. Ryan Austin Dds

1630 Market Ctr Dr Suite 100
O Fallon MO 63368
636 004-4380
Medical School: Other - Unknown
Accepts Medicare: No
Participates In eRX: No
Participates In PQRS: No
Participates In EHR: No
License #: 2013016296
NPI: 1649619073
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The Impact of Protein Nutritional Supplementation for Massive Weight Loss Patients Undergoing Abdominoplasty. - Aesthetic surgery journal / the American Society for Aesthetic Plastic surgery
As more patients undergo bariatric surgery to assist with weight loss, the demand for post-bariatric body contouring surgery, to address both functional and aesthetic concerns, is increasing. However, high wound healing complication rates remain a significant problem for these patients. One theory is that chronic malnourishment and hypoproteinemia may contribute significantly to these wound healing complications.The purpose of this study was to determine the effect of pretreatment protein nutritional supplementation on wound healing in post-bariatric surgery massive weight loss patients undergoing abdominoplasty. Our hypothesis was that protein supplementation would decrease wound healing complications.A retrospective review was performed of 23 post-bariatric surgery patients undergoing abdominoplasty who received pretreatment protein nutritional supplementation. This group was compared with a historical control group of 23 post-bariatric surgery patients who underwent abdominoplasty in the period immediately before the implementation of the protein supplementation protocol. Patient demographics and procedural characteristics were similar for the two groups.Forty-six patients were identified who had undergone abdominoplasty, half of whom were prescribed the protein supplementation protocol. Overall wound healing complication rates were significantly lower in the protein-supplemented group (0.0% vs. 21.8%, p = 0.04). There was no significant difference between the protein supplementation and historical control groups in regards to total complication rate.Pretreatment protein supplementation is a simple intervention that can significantly decrease wound healing complications in post-bariatric surgery massive weight loss patients undergoing abdominoplasty. LEVEL OF EVIDENCE 4: Therapeutic.© 2015 The American Society for Aesthetic Plastic Surgery, Inc. Reprints and permission:
Vertical Scar Reduction Mammaplasty. - Plastic and reconstructive surgery
Since 1989, the authors have performed vertical scar reduction mammaplasty on over 3000 patients. In 2006, the authors described their technique. Since then, the authors have made several modifications that they believe have improved both the reliability of the procedure and the outcomes that they are able to achieve. Key modifications are described in this article and the accompanying video.
Exposure to plastic surgery during undergraduate medical training: A single-institution review. - Plastic surgery (Oakville, Ont.)
Applications to surgical residency programs have declined over the past decade. Even highly competitive programs, such as plastic surgery, have begun to witness these effects. Studies have shown that early surgical exposure has a positive influence on career selection.To review plastic surgery application trends across Canada, and to further investigate medical student exposure to plastic surgery.To examine plastic surgery application trends, national data from the Canadian Resident Matching Service database were analyzed, comparing 2002 to 2007 with 2008 to 2013. To evaluate plastic surgery exposure, a survey of all undergraduate medical students at the University of Toronto (Toronto, Ontario) during the 2012/2013 academic year was conducted.Comparing 2002 to 2007 and 2008 to 2013, the average number of national plastic surgery training positions nearly doubled, while first-choice applicants decreased by 15.3%. The majority of Canadian academic institutions experienced a decrease in first-choice applicants; 84.7% of survey respondents indicated they had no exposure to plastic surgery during their medical education. Furthermore, 89.7% believed their education had not provided a basic understanding of issues commonly managed by plastic surgeons. The majority of students indicated they receive significantly less plastic surgery teaching than all other surgical subspecialties. More than 44% of students not considering plastic surgery as a career indicated they may be more likely to with increased exposure.If there is a desire to grow the specialty through future generations, recruiting tactics to foster greater interest in plastic surgery must be altered. The present study suggests increased and earlier exposure for medical students is a potential solution.
Supply versus demand: a review of application trends to Canadian surgical training programs. - Canadian journal of surgery. Journal canadien de chirurgie
Despite increases in medical school enrolment, applications to surgical residency programs in Canada have been in decline over the past decade, with an increasing number of unmatched surgical residency positions. We examined the current status of surgical residency in Canada and analyzed application trends (2002–2013) for surgical training programs across Canada. Our findings suggest that most undergraduate medical schools across Canada are having difficulty fostering interest in surgical careers. We propose that a lack of adequate early exposure to the surgical specialties during undergraduate training is a critical factor. Moving forward, we must examine how the best-performing institutions and surgical programs have maintained interest in pursuing surgical careers and adapt our recruitment methods to both maintain and grow future interest. As Mary Engelbreit said, "If you don't like something, change it; if you can't change it, change the way you think about it."
Peripherally inserted central venous catheter safety in burn care: a single-center retrospective cohort review. - Journal of burn care & research : official publication of the American Burn Association
The use of peripherally inserted central catheter (PICC) line for central venous access in thermally injured patients has increased in recent years despite a lack of evidence regarding safety in this patient population. A recent survey of invasive catheter practices among 44 burn centers in the United States found that 37% of burn units use PICC lines as part of their treatment protocol. The goal of this study was to compare PICC-associated complication rates with the existing literature in both the critical care and burn settings. The methodology involved is a single institution retrospective cohort review of patients who received a PICC line during admission to a regional burn unit between 2008 and 2013. Fifty-three patients were identified with a total of seventy-three PICC lines. The primary outcome measurement for this study was indication for PICC line discontinuation. The most common reason for PICC line discontinuation was that the line was no longer indicated (45.2%). Four cases of symptomatic upper extremity deep vein thrombosis (5.5%) and three cases of central line-associated bloodstream infection (4.3%, 2.72 infections per 1000 line days) were identified. PICC lines were in situ an average of 15 days (range 1 to 49 days). We suggest that PICC line-associated complication rates are similar to those published in the critical care literature. Though these rates are higher than those published in the burn literature, they are similar to central venous catheter-associated complication rates. While PICC lines can be a useful resource in the treatment of the thermally injured patient, they are associated with significant and potentially fatal risks.
A comparison of Biobraneâ„¢ and cadaveric allograft for temporizing the acute burn wound: Cost and procedural time. - Burns : journal of the International Society for Burn Injuries
In many circumstances early burn excision and autografting is unsafe or even impossible. In these situations, skin substitute dressings can be utilized for temporary wound coverage. Two commonly used dressings for this purpose are cadaveric allograft and Biobrane™.Five year retrospective cohort study evaluating upper extremity burns treated with temporary wound coverage (Biobrane™ or allograft). The primary outcome was to determine the impact choice of wound coverage had on operative time and cost. The secondary outcome was the need for revision of upper extremity debridement prior to definitive autografting.45 patients were included in this study: 15 treated with cadaveric allograft and 30 treated with Biobrane™ skin substitute. Biobrane™ had a significantly lower procedure time (21.12 vs. 54.78 min per %TBSA excised, p=0.02) and cost (1.30 vs. 2.35 dollars per minute per %TBSA excised, p=0.002). Both techniques resulted in 2 revisions due to complications.Biobrane™ is superior to cadaveric allograft as a temporizing skin substitute in the acute burn wound, both in terms of procedure time and associated cost. We believe that this is largely due to the relative ease of application of Biobrane™. Furthermore, given its unique characteristics, Biobrane™ may serve as a triage and transport option for severe burns in the military and mass casualty settings.Copyright © 2014 Elsevier Ltd and ISBI. All rights reserved.
Intracranial pseudoaneurysm associated with orbitozygomatic complex fracture. - The Journal of craniofacial surgery
Fractures of the orbitozygomatic complex are one of the most common facial fractures encountered by plastic surgeons. Many would consider this to be primarily a cosmetic deformity; however, these injuries can be associated with acute life-threatening complications. Intracranial pseudoaneurysm, although rare, is a well-documented complication of blunt facial trauma, which most plastic surgeons are unaware of. We present the case of a 20-year-old woman who developed an intracranial pseudoaneurysm after blunt facial trauma to illustrate the importance of (1) understanding this rare but highly morbid complication, (2) assessing high-risk patients for pseudoaneurysm, and (3) delaying reconstruction in high-risk patients.
Genome re-sequencing and functional analysis places the Phytophthora sojae avirulence genes Avr1c and Avr1a in a tandem repeat at a single locus. - PloS one
The aim of this work was to map and identify the Phytophthora sojae Avr1c gene. Progeny from a cross of P. sojae strains ACR10×P7076 were tested for virulence on plants carrying Rps1c. Results indicate that avirulence segregates as a dominant trait. We mapped the Avr1c locus by performing whole genome re-sequencing of composite libraries created from pooled samples. Sequence reads from avirulent (Pool1) and virulent (Pool2) samples were aligned to the reference genome and single nucleotide polymorphisms (SNP) were identified for each pool. High quality SNPs were filtered to select for positions where SNP frequency was close to expected values for each pool. Only three SNP positions fit all requirements, and these occurred in close proximity. Additional DNA markers were developed and scored in the F₂ progeny, producing a fine genetic map that places Avr1c within the Avr1a gene cluster. Transient expression of Avr1c or Avr1a triggers cell death on Rps1c plants, but Avr1c does not trigger cell death on Rps1a plants. Sequence comparisons show that the RXLR effector genes Avr1c and Avr1a are closely related paralogs. Gain of virulence on Rps1c in P. sojae strain P7076 is achieved by gene deletion, but in most other strains this is accomplished by gene silencing. This work provides practical tools for crop breeding and diagnostics, as the Rps1c gene is widely deployed in commercial soybean cultivars.
Next-generation mapping of genetic mutations using bulk population sequencing. - Methods in molecular biology (Clifton, N.J.)
Next-generation sequencing platforms have made it possible to very rapidly map genetic mutations in Arabidopsis using whole-genome resequencing against pooled members of an F2 mapping population. In the case of recessive mutations, all individuals expressing the phenotype will be homozygous for the mutant genome at the locus responsible for the phenotype, while all other loci segregate roughly equally for both parental lines due to recombination. Importantly, genomic regions flanking the recessive mutation will be in linkage disequilibrium and therefore also be homozygous due to genetic hitchhiking. This information can be exploited to quickly and effectively identify the causal mutation. To this end, sequence data generated from members of the pooled population exhibiting the mutant phenotype are first aligned to the reference genome. Polymorphisms between the mutant and mapping line are then identified and used to determine the homozygous, nonrecombinant region harboring the mutation. Polymorphisms in the identified region are filtered to provide a short list of markers potentially responsible for the phenotype of interest, which is followed by validation at the bench. Although the focus of recent studies has been on the mapping of point mutations exhibiting recessive phenotypes, the techniques employed can be extended to incorporate more complicated scenarios such as dominant mutations and those caused by insertions or deletions in genomic sequence. This chapter describes detailed procedures for performing next-generation mapping against an Arabidopsis mutant and discusses how different mutations might be approached.
The root transcriptome for North American ginseng assembled and profiled across seasonal development. - BMC genomics
Ginseng including North American ginseng (Panax quinquefolius L.) is one of the most widely used medicinal plants. Its success is thought to be due to a diverse collection of ginsenosides that serve as its major bioactive compounds. However, few genomic resources exist and the details concerning its various biosynthetic pathways remain poorly understood. As the root is the primary tissue harvested commercially for ginsenosides, next generation sequencing was applied to the characterization and assembly of the root transcriptome throughout seasonal development. Transcripts showing homology to ginsenoside biosynthesis enzymes were profiled in greater detail.RNA extracts from root samples from seven development stages of North American ginseng were subjected to 454 sequencing, filtered for quality and used in the de novo assembly of a collective root reference transcriptome consisting of 41,623 transcripts. Annotation efforts using a number of public databases resulted in detailed annotation information for 34,801 (84%) transcripts. In addition, 3,955 genes were assigned to metabolic pathways using the Kyoto Encyclopedia of Genes and Genomes. Among our results, we found all of the known enzymes involved in the ginsenoside backbone biosynthesis and used co-expression analysis to identify a number of candidate sequences involved in the latter stages ginsenoside biosynthesis pathway. Transcript profiles suggest ginsenoside biosynthesis occurs at distinct stages of development.The assembly generated provides a comprehensive annotated reference for future transcriptomic study of North American ginseng. A collection of putative ginsenoside biosynthesis genes were identified and candidate genes predicted from the lesser understood downstream stages of biosynthesis. Transcript expression profiles across seasonal development suggest a primary dammarane-type ginsenoside biosynthesis occurs just prior to plant senescence, with secondary ginsenoside production occurring throughout development. Data from the study provide a valuable resource for conducting future ginsenoside biosynthesis research in this important medicinal plant.

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