Katie E Weichman

Gracie Square Hospital, New York, NY, New York City, NY, USA

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Publications (4)9.52 Total impact

  • Article: Antibiotic Selection for the Treatment of Infectious Complications of Implant-Based Breast Reconstruction.
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    ABSTRACT: BACKGROUND: Infection requiring explantation remains the most devastating complication associated with implant-based breast reconstruction. There are many treatment algorithms to prevent reconstructive failure in face of infection using both oral and intravenous antibiotics. In the absence of patient-specific culture data, antibiotic selection is generally directed toward broad-spectrum coverage based on historical data. We hypothesize that reviewing our institution's microbiology data obtained from explanted implant-based breast reconstructions would provide a rational basis for antibiotic selection in the future. METHODS: A retrospective review of 902 consecutive immediate implant-based breast reconstructions at a single institution from November 2007 to May 2011 was conducted. Implant reconstructions requiring explantation or drainage by interventional radiology were identified. Patient demographics, implant characteristics, presence of skin necrosis, microbiological data, and outcomes were reviewed. RESULTS: Forty-three (4.76%) implant reconstructions requiring explantation or drainage by interventional radiology met the inclusion criteria for this study. Five patients (11.6%) had round, smooth silicone implants, and 36 (88.4%) had textured tissue expanders. Twenty-six implants were explanted because of infection; 3, because of exposure from skin necrosis; and 11, because of the combination of flap necrosis and infection; and 1, secondarily because of cancer invasion into the skin. Reconstruction was salvaged in 21 breasts (51.2%): 12 (57.1%) by implant reconstruction, 5 (23.8%) by pedicled latissimus dorsi flaps, and 4 (19.1%) with a microvascular free flap. Thirty explants had microbiology data available. The most common organism isolated was Staphylococcus epidermidis (10), followed by methicillin-sensitive Staphylococcus aureus (5), Serratia marcescens (5), Pseudomonas aeruginosa (4), enterococcus (3), Escherichia coli (2), Enterobacter (2), group B streptococcus (1), and Morganella morganii (1). Forty percent of the organisms were resistant to cefazolin; however, 86% were sensitive to gentamicin, 80% were sensitive to Levaquin, and 63% were sensitive to ciprofloxacin. CONCLUSIONS: Infection associated with implant-based breast reconstructions continues to threaten explantation and reconstructive failure. Based on our microbiological data, initial cellulitis amenable to oral antibiotics should be treated with oral fluoroquinolones as a first-line treatment. If this regimen fails, intravenous imipenem or gentamicin and vancomycin should be initiated. Obviously, clinical judgment regarding specific patient risk factors and compliance should play a role in decision making, but these data provide an evidence-based rationale for first-line oral antibiotic selection.
    Annals of plastic surgery 03/2013; · 1.29 Impact Factor
  • Article: Microsurgical breast reconstruction for nipple-sparing mastectomy.
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    ABSTRACT: : Nipple-sparing mastectomy warrants thorough preoperative evaluation to effectively achieve risk reduction, high patient satisfaction, and improved aesthetic outcome. To the authors' knowledge, this review represents the largest series of microsurgical breast reconstructions following nipple-sparing mastectomies. : All patients undergoing nipple-sparing mastectomy with microsurgical immediate breast reconstruction treated at New York University Medical Center (2007-2011) were identified. Patient demographics, breast cancer history, intraoperative details, complications, and revision operations were examined. Descriptive statistical analysis, including t test or regression analysis, was performed. : In 51 patients, 85 free flap breast reconstructions (n = 85) were performed. The majority of flaps were performed for prophylactic indications [n = 55 (64.7 percent)], mostly through vertical incisions [n = 40 (47.0 percent)]. Donor sites included abdominally based [n = 66 (77.6 percent)], profunda artery perforator [n = 12 (14.1 percent)], transverse upper gracilis [n = 6 (7.0 percent)], and superior gluteal artery perforator [n = 1 (1.2 percent)] flaps. The most common complications were mastectomy skin flap necrosis [n = 11 (12.7 percent)] and nipple necrosis [n = 11 (12.7 percent)]. There was no correlation between mastectomy skin flap or nipple necrosis and choice of incision, mastectomy specimen weight, body mass index, or age (p > 0.05). However, smoking history was associated with nipple necrosis (p < 0.01). : This series represents a high-volume experience with nipple-sparing mastectomy followed by immediate microsurgical reconstruction. When appropriately executed, it can deliver low complication rates. : Therapeutic, IV.
    Plastic and reconstructive surgery 02/2013; 131(2):139e-47e. · 2.74 Impact Factor
  • Article: Treatment and Outcomes of Fingertip Injuries at a Large Metropolitan Public Hospital.
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    ABSTRACT: BACKGROUND:: Fingertip injuries are the most common hand injuries presenting for acute care. Treatment algorithms have been described based on defect size, bone exposure, and injury geometry. However, most of the outcomes data is associated with specific procedures and there is a dearth of comparative data across injury type. We hypothesized that despite accepted algorithms many fingertip injuries can be treated conservatively. METHODS:: A prospectively collected retrospective review of all fingertip injuries presenting to Bellevue Hospital between January 2011 and May 2011 was conducted. Patients were entered into an electronic database upon presentation. Follow-up care was tracked through the electronic medical record. Patients lost to follow-up were questioned via telephone. Patients were analyzed based on age, mechanism of injury, handedness, occupation, wound geometry, defect size, bone exposure, emergency room procedures performed, need for surgical intervention, and outcome. RESULTS:: 100 fingertips were injured. Injuries occurred by crush(46%), laceration(30%), and avulsion(24%). 64% of patients healed without surgery, 18% required operative intervention, and 18% were lost to follow up. Patients requiring operative intervention were more likely to have a larger defect, 3.28cm vs. 1.75 cm(p<0.005), volar oblique injury, 50% vs. 8.8%(p<0.005), exposed bone, 81.3% vs. 35.3%(p<0.005) and an associated distal phalanx fracture, 81.3% vs. 47.1%(p<0.05). Patients requiring surgical intervention had a longer average return to work time when compared to those not requiring surgical intervention, 4.33 vs. 2.98 weeks(p<0.001). CONCLUSION:: Despite current accepted algorithms, many fingertip injuries can be treated non-operatively to achieve optimal sensation, fine motor, and earlier return to work. LEVEL OF EVIDENCE:: Therapeutic Level 3.
    Plastic and reconstructive surgery 09/2012; · 2.74 Impact Factor
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    Article: The use of acellular dermal matrix in immediate two-stage tissue expander breast reconstruction.
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    ABSTRACT: Acellular dermal matrix is commonly used in implant-based breast reconstruction to allow for quicker tissue expansion with better coverage and definition of the lower pole of the breast. This study was performed to analyze complications associated with its use in immediate two-stage, implant-based breast reconstruction and to subsequently develop guidelines for its use. A retrospective analysis of 628 consecutive immediate two-stage tissue expander breast reconstructions at a single institution over a 3-year period was conducted. The reconstructions were divided into two groups: reconstruction with acellular dermal matrix and reconstruction without it. Demographic information, patient characteristics, surface area of acellular dermal matrix, and complications were analyzed and compared. A total of 407 patients underwent 628 immediate two-stage, implant-based breast reconstructions; 442 reconstructions (70.3 percent) used acellular dermal matrix and 186 (29.6 percent) did not. The groups had similar patient characteristics; however, major complications were significantly increased in the acellular dermal matrix group (15.3 versus 5.4 percent; p = 0.001). These complications included infection requiring intravenous antibiotics (8.6 versus 2.7 percent; p = 0.001), flap necrosis requiring excision (6.7 versus 2.7 percent; p = 0.015), and explantation of the tissue expander (7.7 versus 2.7 percent; p = 0.004). Use of acellular dermal matrix in immediate two-stage, implant-based breast cancer reconstruction is associated with a significant increase in major complications. Therefore, it should only be used in specific patients and in minimal amounts. Indications for its use include single-stage permanent implant reconstruction and inadequate local muscle coverage of the tissue expander. Therapeutic, III.
    Plastic and reconstructive surgery 05/2012; 129(5):1049-58. · 2.74 Impact Factor