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Dive into the research topics where Karan Chopra is active.

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Featured researches published by Karan Chopra.


Annals of Plastic Surgery | 2014

Early postoperative outcomes associated with the anterolateral thigh flap in Gustilo IIIB fractures of the lower extremity.

Michael R. Christy; Avron Lipschitz; Eduardo D. Rodriguez; Karan Chopra; Nance Yuan

PurposeA core concept in plastic surgery has been the replacement of “like-with-like” tissue. Applying this concept to the lower extremity, the anterolateral thigh (ALT) perforator flap has become a frequently used free flap for restoration of soft tissue defects involving the distal lower extremity. The objective of this study was to evaluate the rate of early postoperative complications associated with the ALT perforator free flap for coverage of high-energy traumatic open fractures of the lower extremity (Gustilo IIIB) and explore related patient risk factors. MethodsA retrospective chart review of 74 patients undergoing free tissue transfer for lower extremity limb coverage was performed. Early postoperative complications were defined as any 1 or more of the following having occurred within 6 months from surgical reconstruction: hematoma, wound infection, deep venous thrombosis, thromboembolism, partial flap loss, complete flap loss, continued osteomyelitis, and progression to amputation occurring within the first 6 months after the injury. Statistical analyses were performed using GraphPad software. Fisher exact test was performed to identify risk factors associated with greater morbidity. ResultsOf all patients, 26 (35%) were identified as those habitually using tobacco product and 48 (64%) were identified as nonusers of tobacco product. Moreover, 10 patients (14%) had other risk factors for atherosclerotic disease and 64 patients (86%) did not have other risk factors for atherosclerosis. Mean (SD) time to reconstruction was 4.74 (1.3) days (range, 3–8 days). Of all defects, 34 (46%) were reconstructed using adipocutaneous flaps and 40 (54%) were reconstructed using fasciocutaneous flaps. The most frequent complication was partial flap loss or superficial epidermolysis 4 (5.4%). Fisher exact test was performed, showing that patients who used tobacco product (cigarette smokers) and had other risk factors for atherosclerosis were significantly more at risk for complications (P < 0.001). ConclusionsIn this retrospective review, those patients who had a positive history of tobacco use at the time of injury and those with risk factors for atherosclerosis had a significantly increased risk of flap complications. Although this is not surprising given the vasoconstrictive effects of nicotine and the impaired blood flow to the lower extremity in patients with atherosclerosis, this study will allow the surgeon to better counsel patients who have a history of tobacco use through complex reconstruction of the lower extremity. This analysis is a preliminary investigation into the safety and efficacy of the ALT fasciocutaneous or adipocutaneous flap to reconstruct high-energy open fractures of the lower extremity.


Annals of Plastic Surgery | 2017

The Dawn of Transparency: Insights from the Physician Payment Sunshine Act in Plastic Surgery

Rizwan Ahmed; Joseph Lopez; Sunjae Bae; Allan B. Massie; E. Chow; Karan Chopra; Babak J. Orandi; Bonnie E. Lonze; James W. May; Justin M. Sacks; Dorry L. Segev

Background The Physician Payments Sunshine Act (PSSA) is a government initiative that requires all biomedical companies to publicly disclose payments to physicians through the Open Payments Program (OPP). The goal of this study was to use the OPP database and evaluate all nonresearch-related financial transactions between plastic surgeons and biomedical companies. Methods Using the first wave of OPP data published on September 30, 2014, we studied the national distribution of industry payments made to plastic surgeons during a 5-month period. We explored whether a plastic surgeons scientific productivity (as determined by their h-index), practice setting (private versus academic), geographic location, and subspecialty were associated with payment amount. Results Plastic surgeons (N = 4195) received a total of US


Journal of Plastic Reconstructive and Aesthetic Surgery | 2015

Manson's point: A facial landmark to identify the facial artery

Daniel Calva; Karan Chopra; Michael Sosin; Carla De La Cruz; Branko Bojovic; Eduardo D. Rodriguez; Paul N. Manson; Michael R. Christy

5,278,613. The median (IQR) payment to a plastic surgeon was US


Journal of Craniofacial Surgery | 2014

Clinical application of the FACES score for face transplantation.

Karan Chopra; Srinivas M. Susarla; Danielle Goodrich; Steven Bernard; James E. Zins; Frank A. Papay; W. P. Andrew Lee; Chad R. Gordon

115 (US


International Wound Journal | 2017

Acellular dermal matrix reduces capsule formation in two-stage breast reconstruction†‡§

Karan Chopra; Bryan Buckingham; Jamil A. Matthews; Jennifer Sabino; Kashyap K. Tadisina; Ronald P. Silverman; Nelson H. Goldberg; Sheri Slezak; Devinder P Singh

35–298); mean, US


Annals of Plastic Surgery | 2014

Complex craniofacial reconstruction using stereolithographic modeling.

Karan Chopra; Matthew K. Folstein; Paul N. Manson; Brian R. Gastman

158. The largest payment to an individual was US


International Wound Journal | 2016

Porcine acellular dermal matrix (PADM) vascularises after exposure in open necrotic wounds seen after complex hernia repair

Arvind U. Gowda; Sarah M. Chang; Karan Chopra; Jamil A. Matthews; Jennifer Sabino; Jeffrey A. Stromberg; Hamid R. Zahiri; Joel Pinczewski; Luther H. Holton; Ronald P. Silverman; Devinder P Singh

341,384. The largest payment category was non-CEP speaker fees (US


Journal of Plastic Reconstructive and Aesthetic Surgery | 2015

Superior epigastric artery perforator (SEAP) flap: A novel approach to autologous breast reconstruction

Neilendu Kundu; Karan Chopra; Robert Morales; Risal Djohan; Thomas Chung; Brian R. Gastman

1,709,930) followed by consulting fees (US


Craniomaxillofacial Trauma and Reconstruction | 2018

Facial Fracture Patterns Associated with Traumatic Optic Neuropathy

Shahrooz S. Kelishadi; Matthew R. Zeiderman; Karan Chopra; Joseph A. Kelamis; Gerhard S. Mundinger; Eduardo D. Rodriguez

1,403,770). Plastic surgeons in private practice received higher payments per surgeon compared with surgeons in academic practice (median [IQR], US


Aesthetic Surgery Journal | 2018

Painful Complications After Cosmetic Surgery: Management of Peripheral Nerve Injury

Karan Chopra; Georgios Kokosis; Benjamin Slavin; Eric H. Williams; A. Lee Dellon

165 [US

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Devinder P Singh

Anne Arundel Medical Center

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Allan B. Massie

Johns Hopkins University School of Medicine

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Bonnie E. Lonze

Johns Hopkins University School of Medicine

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E. Chow

Johns Hopkins University School of Medicine

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Justin M. Sacks

Johns Hopkins University School of Medicine

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