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Dive into the research topics where Eric G. Halvorson is active.

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Featured researches published by Eric G. Halvorson.


Annals of Plastic Surgery | 2010

Utility of the omentum in pelvic floor reconstruction following resection of anorectal malignancy: patient selection, technical caveats, and clinical outcomes.

Charles Scott Hultman; Matthew Sherrill; Eric G. Halvorson; Clara N. Lee; John F. Boggess; Michael O. Meyers; Benjamin A. Calvo; Hong J. Kim

This study assesses the usefulness of the omentum in the reconstruction of complex perineal defects, following abdominoperineal resection or pelvic exenteration, for anorectal malignancy.Between 2000 and 2008, 70 patients (mean age: 59 years) with anorectal malignancy underwent abdominoperineal resection (n = 57) or pelvic exenteration (n = 13) and were reconstructed by primary repair alone (n = 13), primary repair with omentum (n = 16), myocutaneous flap alone (n = 28), or myocutaneous flap with omentum (n = 13). Patients with and without omental flaps were compared by Student t test and &khgr;2 analysis. Omental flaps were based on a single pedicle, tunneled in the retrocolic plane lateral to the ligament of Treitz, and transposed across the sacrum to the pelvic floor.In total, 29 patients had pelvic floor and perineal reconstruction with the omentum, and 41 patients had reconstruction without the omentum. Incidence of major pelvic complications (abscess, urinoma, deep vein thrombosis, flap dehiscence, hernia, bowel obstruction, fistula) was greater in the “no omentum” group (25/41 patients, 61%), compared with the “omentum” group (6/29 patients, 21%) (P < 0.01). No differences were observed regarding age, stage, incidence of radiotherapy, blood loss, length of stay, or mortality.Use of the omentum as a primary flap, or in combination with a myocutaneous flap, in the reconstruction of complex perineal defects, is associated with a decreased incidence of postoperative complications, strongly supporting the use of the omentum in pelvic floor reconstruction.


Annals of Plastic Surgery | 2013

Laser-assisted indocyanine green angiography: a critical appraisal.

Cindy Wu; Sendia Kim; Eric G. Halvorson

BackgroundLaser-assisted indocyanine green angiography (ICG-A) has been promoted to assess perfusion of random skin, pedicled, and free flaps. Few studies address its potential limitations. MethodsThirty-seven patients who underwent reconstructive procedures with ICG-A were studied retrospectively to determine the correlation between clinical findings and ICG-A. Indocyanine green angiography underestimated perfusion when areas of less than or equal to 25% uptake were not debrided and remained perfused. Indocyanine green angiography overestimated perfusion when areas with greater than 25% uptake developed necrosis. ResultsOf 14 random skin flaps, ICG-A underestimated perfusion in 14% and overestimated in 14%. In 16 patients undergoing perforator flap breast reconstruction, ICG-A correlated with computed tomographic angiogram (CTA) in 85%. Indocyanine green angiography underestimated perfusion in 7% and overestimated in 7%. In 8/11 patients undergoing fasciocutaneous flaps, ICG-A aided in donor site selection. In 3/6 ALT flaps, a better unilateral blush was found that correlated with Doppler. In all 3, a dominant perforator was found. In 11 patients, there was a 9% underestimation of flap perfusion. In 3 pedicled flaps, there was a 66% underestimation and 33% overestimation of perfusion. ConclusionsIndocyanine green angiography often confirmed our clinical/radiologic findings in abdominal perforator and fasciocutaneous flaps. It tended to underestimate perfusion in pedicle and skin flaps. When clinical examination was obvious, ICG-A rendered clear-cut findings. When clinical examination was equivocal, ICG-A tended to provide ambiguous findings, demonstrating that a distinct cutoff point does not exists for every patient or flap. Indocyanine green angiography is a promising but expensive technology that would benefit from standardization. Further research is needed before ICG-A can become a reliable tool for surgeons.


Journal of Surgical Research | 2012

Get on your boots: Preparing fourth-year medical students for a career in surgery, using a focused curriculum to teach the competency of professionalism

Charles Scott Hultman; AnnaMarie Connolly; Eric G. Halvorson; Pamela A. Rowland; Michael O. Meyers; David C. Mayer; Amelia F. Drake; George F. Sheldon; Anthony A. Meyer

INTRODUCTION Few educational programs exist for medical students that address professionalism in surgery, even though this core competency is required for graduate medical education and maintenance of board certification. Lapses in professional behavior occur commonly in surgical disciplines, with a negative effect on the operative team and patient care. Therefore, education regarding professionalism should begin early in the surgeons formative process, to improve behavior. The goal of this project was to enhance the attitudes and knowledge of medical students regarding professionalism, to help them understand the role of professionalism in a surgical practice. METHODS We implemented a 4-h seminar, spread out as 1-h sessions over the course of their month-long rotation, for 4th-year medical students serving as acting interns (AIs) in General Surgery, a surgical subspecialty, Obstetrics/Gynecology, or Anesthesia. Teaching methods included lecture, small group discussion, case studies, and journal club. Topics included Cognitive/Ethical Basis of Professionalism, Behavioral/Social Components of Professionalism, Managing Yourself, and Leading While You Work. We assessed attitudes about professionalism with a pre-course survey and tracked effect on learning and behavior with a post-course questionnaire. We asked AIs to rate the egregiousness of 30 scenarios involving potential lapses in professionalism. RESULTS A total of 104 AIs (mean age, 26.5 y; male to female ratio, 1.6:1) participated in our course on professionalism in surgery. Up to 17.8% of the AIs had an alternate career before coming to medical school. Distribution of intended careers was: General Surgery, 27.4%; surgical subspecialties, 46.6%; Obstetrics/Gynecology, 13.7%; and Anesthesia, 12.3%. Acting interns ranked professionalism as the third most important of the six core competencies, after clinical skills and medical knowledge, but only slightly ahead of communication. Most AIs believed that professionalism could be taught and learned, and that the largest obstacle was not enough time in the curriculum. The most effective reported teaching methods were mentoring and modeling; lecture and journal club were the effective. Regarding attitudes toward professionalism, the most egregious examples of misconduct were substance abuse, illegal billing, boundary issues, sexual harassment, and lying about patient data, whereas the least egregious examples were receiving textbooks or honoraria from drug companies, advertising, self-prescribing for family members, and exceeding work-hour restrictions. The most important attributes of the professional were integrity and honesty, whereas the least valued were autonomy and altruism. The AIs reported that the course significantly improved their ability to define professionalism, identify attributes of the professional, understand the importance of professionalism, and integrate these concepts into practice (all P < 0.01). CONCLUSIONS Although medical students interested in surgery may already have well-formed attitudes and sophisticated knowledge about professionalism, this core competency can still be taught to and learned by trainees pursuing a surgical career.


Annals of Plastic Surgery | 2012

The impact of preoperative CT angiography on breast reconstruction with abdominal perforator flaps

Winnie Tong; Robert Dixon; Heidi Ekis; Eric G. Halvorson

Purpose: Because of the anatomic variability of the deep inferior epigastric artery, preoperative CT angiography (pCTA) has gained popularity for planning abdominal perforator flap breast reconstruction. This study evaluates how pCTA has affected preoperative planning, operative time, and outcome. Methods: We performed a retrospective study of abdominal free flap breast reconstruction at our institution over a 4-year period, with pCTA performed routinely after the first year. Operative time and outcomes were compared between procedures with and without pCTA. Incidental findings were recorded. Results: Between 2006 and 2010, 102 abdominal perforator flap surgeries were performed on 69 patients; of whom, 51 patients had pCTA and 18 did not. pCTA changed preoperative planning in 50% of cases by identifying the best perforator in unilateral cases or perforators with long intramuscular course. Preoperative plan based on pCTA corresponded to operative procedures in 89% of cases. The sensitivity and positive predictive value of pCTA to localize perforators were 79% and 92%, respectively. Operative time was significantly reduced with pCTA for both unilateral (636 vs. 496 minutes, P = 0.017) and bilateral cases (746 vs. 629 minutes, P = 0.05). Rates of fat necrosis, partial flap necrosis, and complete flap loss were comparable between the 2 groups. Incidentalomas were found in 36% of patients. Conclusions: pCTA appears to reduce operative time by minimizing time spent identifying perforators, assisting in side selection for unilateral reconstruction, and optimizing planning when a long intramuscular course is identified. The effect of a learning curve cannot be excluded and is the chief limitation of this study.


Annals of Plastic Surgery | 2012

The transition from pedicle transverse rectus abdominis myocutaneous to perforator flap: what is the cost of opportunity?

Winnie Tong; Andrea Bazakas; C. Scott Hultman; Eric G. Halvorson

Purpose: This study evaluates how the transition from pedicled transverse rectus abdominis myocutaneous (pTRAM) to perforator flaps at an academic center has affected outcome and reimbursement. Methods: In 2006, our practice transitioned to almost exclusively perforator flaps for breast reconstruction. This study retrospectively compares pTRAM flaps performed from 2002 to 2006 (group 1) with perforator flaps from 2006 to 2010 (group 2). Operative time, complications, and reimbursement were compared between the 2 groups. Results: We performed 93 pTRAM flaps in 69 patients in group 1 and 102 perforator flaps in 69 patients in group 2. Operative time was shorter in group 1 for unilateral breast reconstruction (399 vs. 543 minutes, P = 0.0001), but no significant difference was noted for bilateral cases (547 vs. 658 minutes, P = 0.1). Fat necrosis requiring reoperation (23.7% vs. 5.9%, P = 0.0004) and partial flap necrosis (20.6% vs. 7.2%, P = 0.045) were more frequent in group 1. There was a higher frequency of abdominal hernia (8.8% vs. 1.6%, P = 0.2) but fewer hematomas (1.5% vs. 10%, P = 0.06) in group 1, although statistical significance was not reached between the 2 groups. Mean adjusted payment per case was


Plastic and Reconstructive Surgery | 2012

Once Is Not Enough: Withholding Postoperative Prophylactic Antibiotics in Prosthetic Breast Reconstruction Is Associated with an Increased Risk of Infection

John L. Clayton; Andrea Bazakas; Clara N. Lee; C. Scott Hultman; Eric G. Halvorson

3658.67 for group 1 versus


Journal of The American Academy of Dermatology | 2013

Transarterial embolization followed by surgical excision of skin lesions as treatment for angiolymphoid hyperplasia with eosinophilia

Andrea Bazakas; Sten Solander; Barry Ladizinski; Eric G. Halvorson

5256.48 for group 2 (P = 0.004), whereas payment per minute was


Journal of Surgical Research | 2012

Get on Your Boots: Preparing Fourth Year Medical Students for a Career in Surgery, Using a Competency-Based Curriculum to Teach Professionalism

Charles Scott Hultman; AnnaMarie Connolly; Eric G. Halvorson; Pamela A. Rowland; Michael O. Meyers; George F. Sheldon; Amelia F. Drake; Anthony A. Meyer

9.25 for group 1 versus


Plastic and Reconstructive Surgery | 2013

To scip ... or not to scip ... the surgical care improvement project protocol

Eric G. Halvorson; Andrea Bazakas; John L. Clayton; Clara N. Lee; C. Scott Hultman

9.13 for group 2 (P = 0.9). Perforator flaps appear to be as profitable as pTRAM flaps with lower morbidity. Conclusions: The transition from pTRAM to perforator flap can be done successfully with appropriate resources and support. The development of a perforator flap practice represents an opportunity cost in optimizing patient care and should be an option to patients seeking breast reconstruction.


Journal of Surgical Research | 2012

Sometimes You Can't Make it on Your Own: The Impact of a Professionalism Curriculum on the Behaviors, Attitudes, and Values of an Academic Plastic Surgery Practice

Charles Scott Hultman; Michael O. Meyers; Pamela A. Rowland; Eric G. Halvorson; Anthony A. Meyer

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Andrea Bazakas

University of North Carolina at Chapel Hill

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Charles Scott Hultman

University of North Carolina at Chapel Hill

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Michael O. Meyers

University of North Carolina at Chapel Hill

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Anthony A. Meyer

University of North Carolina at Chapel Hill

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C. Scott Hultman

University of North Carolina at Chapel Hill

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Clara N. Lee

University of North Carolina at Chapel Hill

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Pamela A. Rowland

University of North Carolina at Chapel Hill

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Amelia F. Drake

University of North Carolina at Chapel Hill

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AnnaMarie Connolly

University of North Carolina at Chapel Hill

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George F. Sheldon

University of North Carolina at Chapel Hill

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