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1.
Histopathology ; 82(5): 755-766, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36631400

RESUMO

AIMS: Oncotype DX recurrence score (RS) is a clinically validated assay, which predicts the likelihood of disease recurrence in oestrogen receptor-positive/HER2-negative (ER+/HER2-) breast cancer (BC). In this study we aimed to compare the performance of Oncotype DX against the conventional clinicopathological parameters using a large BC cohort diagnosed in a single institution. METHODS AND RESULTS: A cohort (n = 430) of ER+/HER2- BC patients who were diagnosed at the Nottingham University Hospitals NHS Trust and had Oncotype DX testing was included. Correlation with the clinicopathological and other biomarkers, including the proliferation index, was analysed. The median Oncotype DX RS was 17.5 (range = 0-69). There was a significant association between high RS and grade 3 tumours. No grade 1 BC or grade 2 tumours with mitosis score 1 showed high RS. Low RS was significantly associated with special tumour types where none of the patients with classical lobular or tubular carcinomas had a high RS. There was an inverse association between RS and levels of ER and progesterone receptor (PR) expression and a positive linear correlation with Ki67 labelling index. Notably, six patients who developed recurrence had an intermediate RS; however, four of these six cases (67%) were identified as high-risk disease when the conventional clinical and molecular parameters were considered. CONCLUSION: Oncotype DX RS is correlated strongly with the conventional clinicopathological parameters in BC. Some tumour features such as tumour grade, type, PR status and Ki67 index can be used as surrogate markers in certain scenarios.


Assuntos
Neoplasias da Mama , Recidiva Local de Neoplasia , Humanos , Feminino , Antígeno Ki-67/metabolismo , Prognóstico , Recidiva Local de Neoplasia/patologia , Receptores de Estrogênio/metabolismo , Neoplasias da Mama/patologia , Biomarcadores Tumorais/metabolismo
2.
Br J Nurs ; 32(10): S24-S29, 2023 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-37219975

RESUMO

BACKGROUND: Teleconsultations were introduced for cancer surgery follow-up to ease pressure on hospital services and facilitate patients' access to those services. There is limited evidence on patients' perceptions of this swift shift in service provision. AIMS: The purpose of this qualitative systematic review was to explore patient experiences of teleconsultations within NHS cancer surgery follow-up services to better understand patient perceptions, satisfaction and acceptability of teleconsultations within cancer services. METHODS: Medline, Embase, PubMed and Google Scholar were searched up to 1 July 2022. Qualitative studies were synthesised using the Braun and Clarke framework. FINDINGS: There were three overarching themes: accessibility; patient experience; and consultation. CONCLUSION: Teleconsultations were widely accepted among cancer surgical patients. However, there were reports of a lack of rapport building and emotional support because of the absence of visual cues and patient camaraderie.


Assuntos
Consulta Remota , Humanos , Pacientes , Reino Unido
3.
Int J Clin Pract ; 75(9): e14446, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34105842

RESUMO

INTRODUCTION: The potential of digital health services has become apparent in recent years, more so now following the coronavirus disease outbreak. However, despite majority of UK population integrating digital-based platforms into their everyday life, there is low engagement with NHS digital services, citing lack of patient-centered approaches to the design of such services. As such, this cross-sectional questionnaire aims to understand the patient perspective pertaining the utility of web-based information in aiding their breast cancer pathway at a large volume tertiary breast institute. METHODS: Adult patients attending the outpatients' post-operative follow-up clinic for any breast-related surgery were included. Questionnaires were provided from 1 August 2019 to 31 December 2019, focusing on awareness of the website, usage and usefulness of information offered relating to their breast surgery journey, with opportunities for open feedback. RESULTS: Of the 104 patients completed the questionnaire, 70% (n = 73) were unaware of the breast institute's website. Patients' wanted a wide range of information, including signposting to support groups and perioperative information such as patient experiences/journey on the operative day (n = 46, 44%/n = 60, 58%) and videos explaining procedures. The most frequent free text included requests for information regarding financial support and parking, and "signposting" to other support services. DISCUSSION: Patients welcome the breast services' website, but we need to improve awareness of this resource and include more holistic information, relating not only to their diagnosis and treatment but also to practical/support services they can access to make their patient journey smoother.


Assuntos
Neoplasias da Mama , Adulto , Neoplasias da Mama/cirurgia , Estudos Transversais , Atenção à Saúde , Feminino , Humanos , Assistência Centrada no Paciente , Inquéritos e Questionários
4.
Br J Cancer ; 123(10): 1584, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32939057

RESUMO

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

5.
Br J Cancer ; 123(10): 1513-1520, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32773767

RESUMO

BACKGROUND: Oestrogen receptor (ER) in invasive breast cancer (BC) predicts response to endocrine therapy (ET) and provides prognostic value. In this study, we investigated the value of ER expression in ductal carcinoma in situ (DCIS) in terms of outcome and the impact on ET decision. METHODS: In total, 643 pure DCIS, diagnosed at Nottingham University Hospitals, were assessed for ER. Clinicopathological data were correlated against ER status, together with assessment of recurrence rate. RESULTS: ER positivity was observed in 74% (475/643) of cases. ER positivity was associated with clinicopathological variables of good prognosis; however, outcome analysis revealed that ER status was not associated with local recurrence. In the intermediate- and high-grade ER-positive DCIS, 58% (11/19) and 63% (15/24) of the recurrences were invasive, respectively, comprising 7% and 6% of all ER-positive DCIS, respectively. Invasive recurrence in low-grade DCIS was infrequent (2%), and none of these patients died of BC. The ER status of the recurrent invasive tumours matched the primary DCIS ER status (94% in ipsilateral and 90% of contralateral recurrence). CONCLUSION: The strong correlation between DCIS and invasive recurrence ER status and the clinical impact of ET justify discussion of the use of ET in ER-positive DCIS treated by breast-conserving surgery. The excellent outcome of low-grade DCIS, which was almost always ER-positive, does not, in the opinion of authors, justify the use of risk-reducing ET. Therefore, the decision on ET for DCIS should be personalised and consider grade, ER status and other characteristics.


Assuntos
Neoplasias da Mama/diagnóstico , Carcinoma in Situ/diagnóstico , Carcinoma Ductal de Mama/diagnóstico , Receptores de Estrogênio/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos Hormonais/uso terapêutico , Biomarcadores Tumorais/análise , Biomarcadores Tumorais/metabolismo , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/metabolismo , Neoplasias da Mama/mortalidade , Carcinoma in Situ/tratamento farmacológico , Carcinoma in Situ/metabolismo , Carcinoma in Situ/mortalidade , Carcinoma Ductal de Mama/tratamento farmacológico , Carcinoma Ductal de Mama/metabolismo , Carcinoma Ductal de Mama/mortalidade , Quimioterapia Adjuvante , Estudos de Coortes , Feminino , Humanos , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Receptores de Estrogênio/análise , Estudos Retrospectivos , Análise de Sobrevida , Análise Serial de Tecidos , Resultado do Tratamento
6.
J Surg Res ; 235: 58-65, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30691846

RESUMO

BACKGROUND: Abdominal scars can affect the patency of deep inferior epigastric artery (DIEA) perforators and are a concern when planning free flap breast reconstruction (FFBR). Computed tomography angiography (CTA) is routinely used for preoperative DIEA flap imaging. We investigated CTA utility in predicting the most clinically useful DIEA perforators in scarred abdomens. METHODS: A single surgeon's CTA FFBR patients were studied. All were imaged by one radiologist. CTA reports, abdominal scars, and flap intraoperative details were analyzed. The operative findings were then correlated with the CTA "predictions." RESULTS: A hundred and six patients with preoperative CTAs underwent 132 FFBRs, 44% (58) from scarred and 56% (74) from virgin abdomens. All flap transfers were successful. Concordance between perforators identified by CTA preoperatively and those selected by the surgeon intraoperatively was 95% (scarred 93%; non-scarred 96%, P = 0.470). There was a significant difference in the proportion of single-perforator flaps between the two groups (scarred 46%; non-scarred 28%, P = 0.041). "Scarred" flaps were heavier (789 vs 676 g, P = 0.0244) than those harvested from virgin abdomens. CONCLUSIONS: CTA accurately predicted perforator choice in flaps from scarred and virgin abdomens. "Scarred" flaps are more likely to be heavier and based on one perforator suggesting that scarring may have an effect on intraflap vascular anatomy. Further investigations are needed to delineate the mechanism by which this occurs.


Assuntos
Cicatriz/diagnóstico por imagem , Angiografia por Tomografia Computadorizada/métodos , Mamoplastia/métodos , Retalho Perfurante , Adulto , Idoso , Artérias Epigástricas/diagnóstico por imagem , Artérias Epigástricas/cirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Retrospectivos
7.
J Reconstr Microsurg ; 34(4): 250-257, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29510419

RESUMO

BACKGROUND: Traumatic amputation of one or more digits can have a serious detrimental effect on social and economic standings which can be mitigated by successful replantation. Little has been recorded on preoperative management before replantation and how this affects the outcomes of the replanted digit. METHODS: A retrospective cohort study was conducted and data collected over an 18-month period. Three protocols for preoperative management were examined: minimal (basic wound management), complete Buncke (anticoagulation, dry dressing on amputate placed on indirect ice and absence of a digital block), and incomplete (any two or three criteria from complete Buncke in addition to the minimal) protocols. Data was collected on survival rate, secondary operations, and complication rate. Function was defined by sensation, range of movement, and strength. RESULTS: Seventy four of 177 digits were replanted with an overall survival rate of 86.5%. The rates for minimal, incomplete, and complete protocols were 95%, 87%, and 91%, respectively, and not significantly different. The complication rate was significantly different between the complete (20%) and minimal (60%) protocols (p = 0.0484). Differences in sensation and grip strength were statistically significant between protocols (p = 0.0465 and p = 0.0430, respectively). Anticoagulation, no digital block and dry gauze all showed reduced complication rates in comparison to their counterparts. CONCLUSIONS: The Buncke protocol, which includes anticoagulation, no digital block, and dry gauze, was found to significantly reduce the complication rate which suggests that it prevents compromise of tissue integrity. Significant differences were found between protocols for sensation and grip strength. A higher-powered study is needed to investigate the effects of preoperative management on complication rates and functional outcomes.


Assuntos
Amputação Traumática/cirurgia , Traumatismos dos Dedos/cirurgia , Força da Mão/fisiologia , Microcirurgia , Recuperação de Função Fisiológica/fisiologia , Reimplante , Adolescente , Adulto , Idoso , Amputação Traumática/fisiopatologia , Amputação Traumática/psicologia , Criança , Pré-Escolar , Feminino , Traumatismos dos Dedos/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Pré-Operatórios/métodos , Estudos Retrospectivos , Retorno ao Trabalho , Fatores Socioeconômicos , Resultado do Tratamento , Adulto Jovem
9.
Aesthet Surg J ; 34(7): 1099-110, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24990884

RESUMO

BACKGROUND: The Ulthera System (Ulthera, Inc, Mesa, Arizona) employs microfocused ultrasound to cause discrete focal heating of the dermis and stimulate neocollagenesis and elastin remodeling. OBJECTIVES: The authors investigated tightening and lifting of cheek tissue, improvement in jawline definition, and reduction in submental skin laxity in patients treated with the Ulthera System. METHODS: A total of 103 adults were enrolled in this prospective nonrandomized clinical trial. Three-dimensional photographs obtained at baseline and 3 months posttreatment were assessed qualitatively by 3 blinded reviewers and quantitatively with AutoCAD software (Informer Technologies, Redwood City, California). The relationship between outcomes and body mass index (BMI) was examined as well. Patients rated pain during the procedure and provided subjective assessment of their outcome at 90 days. Adverse events were documented. RESULTS: Ninety-three patients were evaluated. Blinded reviewers observed improvement in skin laxity in 58.1% of patients. During quantitative assessments, overall improvement in skin laxity was noted in 63.6% of evaluated patients. No change was detected in 54.5% of patients whose BMI exceeded 30 kg/m2 or in 12.2% of patients whose BMI was ≤30 kg/m2. At day 90, 65.6% of patients perceived improvement in the skin laxity of the lower half of their face/neck. The average procedural pain scores for the cheek, submental, and submandibular regions were 5.68, 6.09, and 6.53, respectively. Wheals, which resolved without intervention or long-term sequelae, were reported for 3 patients. CONCLUSIONS: To the authors' knowledge, this is the largest clinical study of the effectiveness of the Ulthera System for rejuvenation of the lower face. At day 90, improvements were reported by two-thirds of patients and by nearly 60% of blinded reviewers. Outcomes were better in patients with BMI≤30 kg/m2. LEVEL OF EVIDENCE: 2.


Assuntos
Técnicas Cosméticas/instrumentação , Face , Rejuvenescimento , Envelhecimento da Pele , Terapia por Ultrassom/instrumentação , Adulto , Fatores Etários , Índice de Massa Corporal , Técnicas Cosméticas/efeitos adversos , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor/etiologia , Satisfação do Paciente , Estudos Prospectivos , Texas , Fatores de Tempo , Resultado do Tratamento , Terapia por Ultrassom/efeitos adversos
10.
Artigo em Inglês | MEDLINE | ID: mdl-38296723

RESUMO

BACKGROUND: Despite the increase in the proportion of female plastic surgeons in the United Kingdom (UK), all-male panels continue to prevail. This article sought to establish whether the genders of speakers at conferences hosted by leading UK plastic surgery associations, the British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS), and the British Association of Aesthetic Plastic Surgeons (BAAPS), are representative of the consultant workforce. METHODS: Data on the gender distribution of plastic surgeons in the workforce over the last decade were obtained from NHS Digital Workforce Statistics. The demographics of invited speakers were sought from conference agendas for both BAPRAS (from 2012 to 2022) and BAAPS (from 2014 to 2021) posted on their association's websites. RESULTS: The proportion of female consultants increased from 16% in 2012 to 22% in 2022. The average proportion of female speakers at BAPRAS conferences was 16% ± 9% SD that was similar to the proportion of female consultants in practice (p = 0.432). In contrast, the average proportion of female speakers at BAAPS conferences was lower than those in practice (7.88% ± 8.29% SD, p = 0.0032). At BAAPS, 43% of speakers were UK plastic surgeons. CONCLUSIONS: Although the podium speakers at BAPRAS were reflective of the consultant population, BAAPS had little to no representation of UK based female plastic surgeons. Therefore, the conference organisers need to intentionally ensure that representation at podium is reflective of the workforce.

11.
Wound Repair Regen ; 21(5): 740-5, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23926906

RESUMO

The purpose of this study was to compare two negative-pressure wound healing systems (NPWT), -75 mmHg with a silicone-coated (SC) dressing and -125 mmHg with polyurethane foam dressing (standard of care). In addition, this study compared the effects of two different dressing interfaces, SC dressing and gauze, with -75 mmHg pressure. For both comparisons, two groups of five pigs were evaluated over a 21-day time course. Two excisional wounds were made on each animal and NPWT dressings were applied. A canvas saddle was constructed to hold the NPWT device so the animal had free range of the pen. Dressings were changed twice a week and wound measurements were taken. Specimens for histology and gene expression analyses were taken on day 7 and 21. These data show that there is increased expression in a few genes associated with remodeling and inflammatory processes in the NPWT-125 with polyurethane foam as compared with the NPWT-75 with SC dressing. These two systems, however, are equivalent with respect to wound healing, histology, and gene expression over 21 days of healing. Further, we demonstrate that there is no difference in measure of healing between the SC dressing and a basic gauze dressing.


Assuntos
Bandagens , Tecido de Granulação/patologia , Tratamento de Ferimentos com Pressão Negativa , Poliuretanos/farmacologia , Silicones/farmacologia , Cicatrização , Ferimentos e Lesões/fisiopatologia , Animais , Modelos Animais de Doenças , Feminino , Regulação da Expressão Gênica , Tecido de Granulação/fisiopatologia , Suínos , Resultado do Tratamento , Ferimentos e Lesões/patologia , Ferimentos e Lesões/terapia
13.
Aesthet Surg J ; 33(6): 854-61, 2013 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-23908302

RESUMO

BACKGROUND: Injectable forms of anesthesia for nonsurgical facial rejuvenation, although efficacious, are uncomfortable for the patient. Preclinical studies have demonstrated that laser pretreatment at low energies enhances absorption of topical lidocaine. OBJECTIVES: The authors assess the safety and efficacy of laser-assisted transdermal delivery of topical anesthetic. METHOD: Ten patients were split into 2 groups (A and B). All patients received 15 g of BLT (20% benzocaine, 6% lidocaine, and 4% tetracaine triple anesthetic cream) for 20 minutes with no occlusion. Then the cream was removed and the first blood draw taken. Group A patients were pretreated with the full ablative laser and group B patients with a fractional ablative laser to the full face. A further 15 g BLT was applied for another 20 minutes. Group A patients then underwent full ablative laser treatment, and group B received fractionated ablative laser treatment. Blood draws were taken at 60, 90, 120, 180, and 240 minutes after the initial topical anesthetic application, and the serum was analyzed for lidocaine and monoethylglycinexylidide (MEGX) levels. Patients were asked to rate the pain felt at intervals during the procedure. RESULTS: No patient required supplemental nerve blocks. Pain scores were equivalent at the end of the first pass for both groups (P = .436). Group A patients had significantly lower pain scores at the start of the second laser treatment (P = .045), but pain scores became equivalent by the end (P = .323). Combined serum lidocaine and MEGX levels were significantly higher in group A patients up to 90 minutes (peak average of 0.61 µg/mL for group A and 0.533 µg/mL for group B; P = .0253), which corresponded to greater initial analgesic effect. CONCLUSIONS: Data from this study demonstrate that topical anesthetic for facial rejuvenation can be enhanced with laser pretreatment while maintaining safe blood serum levels. Further studies should examine optimal application amount and time to allow safe multipass facial rejuvenation without the need for invasive nerve blocks.


Assuntos
Analgesia/métodos , Anestésicos Combinados/administração & dosagem , Anestésicos Locais/administração & dosagem , Técnicas Cosméticas , Dor Facial/prevenção & controle , Terapia a Laser , Lidocaína/administração & dosagem , Rejuvenescimento , Envelhecimento da Pele , Administração Cutânea , Analgesia/efeitos adversos , Análise de Variância , Anestésicos Combinados/efeitos adversos , Anestésicos Combinados/sangue , Anestésicos Combinados/farmacocinética , Anestésicos Locais/efeitos adversos , Anestésicos Locais/sangue , Anestésicos Locais/farmacocinética , Benzocaína/administração & dosagem , Biotransformação , Técnicas Cosméticas/efeitos adversos , Técnicas Cosméticas/instrumentação , Desenho de Equipamento , Dor Facial/diagnóstico , Dor Facial/etiologia , Humanos , Terapia a Laser/efeitos adversos , Terapia a Laser/instrumentação , Lasers de Gás , Lasers de Estado Sólido , Lidocaína/efeitos adversos , Lidocaína/análogos & derivados , Lidocaína/sangue , Lidocaína/farmacocinética , Pomadas , Medição da Dor , Absorção Cutânea , Inquéritos e Questionários , Tetracaína/administração & dosagem , Texas , Resultado do Tratamento
14.
Aesthet Surg J ; 33(8): 1175-85, 2013 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-24197935

RESUMO

BACKGROUND: The use of autologous fat for augmentation has become common practice among plastic surgeons for both cosmetic and reconstructive procedures. Previously reported data suggest that the method of fat extraction can have profound effects on adipocyte viability and subsequent fat graft survival. OBJECTIVE: The authors describe a pilot study comparing a new tissue liquefaction liposuction device (TLL; HydraSolve Lipoplasty System; Andrew Technologies, Irvine, California) with a standard syringe aspiration method with respect to adipocyte viability, fat graft survivability, and fat graft quality. METHODS: Lipoaspirate from 5 patients was harvested using either TLL or the standard method. Samples were centrifuged and assayed for cell viability. All lipoaspirate samples were grafted into nude rats and harvested 42 and 84 days later. Graft survival and quality were assessed. RESULTS: There was no difference in adipocyte viability between the lipoaspirate conditions. At 42 days, there was no significant difference in fat graft weight and the TLL grafts were more fibrotic than the standard control grafts, but this was improved with the increased centrifuge rate. At 84 days, fat grafts were equivalent with respect to graft weight and histology. CONCLUSIONS: Lipoaspirate harvested with the TLL device and centrifuged at 3000 rpm resulted in fat grafts that were equivalent in weight and histology to those from lipoaspirate harvested with the standard syringe aspiration technique.


Assuntos
Adipócitos/transplante , Tecido Adiposo/transplante , Sobrevivência de Enxerto , Lipectomia , Coleta de Tecidos e Órgãos/métodos , Tecido Adiposo/citologia , Animais , Sobrevivência Celular , Desenho de Equipamento , Humanos , Lipectomia/instrumentação , Modelos Animais , Ratos , Ratos Nus , Fatores de Tempo , Coleta de Tecidos e Órgãos/instrumentação , Transplante Heterólogo
15.
Aesthet Surg J ; 33(1): 109-16, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23277622

RESUMO

BACKGROUND: Chronic wound healing problems can pose a significant clinical challenge. Transdermal delivery of adipose-derived stem cells (ADSC) may be a possible solution to healing these recalcitrant, debilitating wounds. Pretreatment of the skin with a fractionated laser has already been shown to assist transdermal drug delivery both in vitro and in vivo and may be an ideal approach to facilitating delivery of ADSC to the target tissue. OBJECTIVES: The authors investigate in a porcine model whether ADSC can be delivered transdermally following pretreatment with a fractional laser. METHODS: After ethics approval was obtained, the abdomens of 2 adult female domestic pigs were pretreated with an erbium:YAG fractionated ablative laser. Following laser treatment, 20 × 10(6) bromodeoxyuridine (BrdU)-labeled ADSC were applied topically to the first animal for 4 hours. The same number of BrdU-labeled ADSC was applied to the second animal for 48 hours. The animals were euthanized at the end of their respective treatment periods, and the BrdU-labeled ADSC were counted after tissue harvest. RESULTS: At 4 hours, an average of 2.40 × 10(6) cells, or 12.0% of the total cells applied, were found in the tissue. At 48 hours, an average of 1.1 × 10(6) cells, or 5.5% of the total cells applied, were seen. CONCLUSIONS: This pilot study demonstrates that ADSC can be delivered transdermally through skin that has been pretreated with a laser. Potential future applications of this approach might include wound-healing or aesthetic indications. Further studies need to be conducted to determine the optimal number of ADSC to use in this approach, the best methods of application, and the effect of transdermally delivered ADSC on wound healing.


Assuntos
Adipócitos/citologia , Terapia a Laser/métodos , Transplante de Células-Tronco/métodos , Cicatrização , Administração Cutânea , Animais , Bromodesoxiuridina/metabolismo , Feminino , Suínos
16.
Lasers Surg Med ; 44(2): 168-74, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22302761

RESUMO

BACKGROUND AND OBJECTIVE: It has been shown in vitro that pretreatment of skin with fractional lasers enhances transdermal delivery of drugs. The aim of this study is to demonstrate in vivo firstly that laser enhances transdermal drug absorption and secondly that this can be manipulated by altering laser settings. STUDY DESIGN/MATERIALS AND METHODS: Four pigs were used in the IACUC approved animal study. On day 0, 5 g of 4% topical lidocaine was applied under occlusion for 60 minutes to a 400 cm(2) area on the abdomen. Blood was drawn at 0, 60, 90, 120, 180, and 240 minutes. On day 7, the Er:YAG laser was used at 500, 250, 50, and 25 µm ablative depth, respectively, over a 400 cm(2) area on the abdomen. Five grams of 4% topical lidocaine was applied immediately with occlusion for 60 minutes, and then removed. Blood was drawn at 0, 60, 90, 120, 180, and 240 minutes. The serum was extracted and analyzed for lidocaine and its metabolite monoethylglycinexylidide (MEGX). RESULTS: Serum levels of lidocaine and MEGX were undetectable in untreated skin. Following laser treatment both lidocaine and MEGX were detectable. Peak levels of lidocaine were significantly higher (P = 0.0002) at 250 µm (0.62 mg/L), compared to 500 µm (0.45 mg/L), 50 µm (0.48 mg/L), and 25 µm (0.3 mg/L). Peak levels of MEGX were significantly higher (P ≤ 0.0001) at 250 µm (0.048 mg/L), compared to 500 µm (0.018 mg/L), 50 µm (0.036 mg/L), and 25 µm (0.0144 mg/L). CONCLUSIONS: This study demonstrates that laser pretreatment significantly increases absorption of topical lidocaine so that it is detectable in the blood and that manipulating laser settings can affect drug absorption. Future work will look at translating this effect into clinical benefit.


Assuntos
Anestésicos Locais/administração & dosagem , Sistemas de Liberação de Medicamentos/métodos , Lasers de Estado Sólido , Lidocaína/administração & dosagem , Absorção Cutânea/efeitos da radiação , Administração Cutânea , Anestésicos Locais/sangue , Anestésicos Locais/farmacocinética , Animais , Sistemas de Liberação de Medicamentos/instrumentação , Lidocaína/análogos & derivados , Lidocaína/sangue , Lidocaína/farmacocinética , Suínos
17.
Lasers Surg Med ; 44(1): 4-10, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22246982

RESUMO

INTRODUCTION: Studies examining the histopathological changes that occur in human skin following fractional laser treatment have been performed mainly in animals or abdominal tissue prior to abdominoplasty. This study looks at the effect of double pulse fractional CO(2) laser compared to single pulse treatments to assess differences in tissue injury in the face and abdomen. METHODS: Twelve healthy subjects randomized into two groups, had two 1 cm(2) areas (infraumbilical and forehead) treated with the fractional CO(2) laser (Deep Fx, Lumenis). Settings used were 15 mJ double pulse, and 30 mJ single pulse, 300 Hz, 10% density and compared to the historic control of 15 patients treated at 15 mJ single pulse [Bailey et al. (2011), Lasers Surg Med 43: 99-107]. Treated sites were biopsied and analyzed with H&E and TUNEL staining to measure width and depth of the microthermal zones (MTZ) of ablation. RESULTS: When comparing 15 mJ double pulse to single pulse there were significant differences both in depth (abdominal skin, P = 0.002 and facial skin, P = 0.001) and width (facial skin, P = 0.0002) of MTZ. When comparing double pulsing at 15 mJ with single pulsing at 30 mJ there were significant differences between MTZ depths in the abdomen (P < 0.01) but not in either the MTZ depth (P = 0.69) or the width in the face (P = 0.502). DISCUSSION: This study demonstrates the differences between histopathological laser injury patterns in the face compared to the abdomen when single pulsing is used. It also demonstrates that double pulsing at 15 mJ is statistically similar to single pulsing at 30 mJ in the face. We think this could have ramifications for clinical practice where by double pulsing at lower energies may result in better clinical outcomes than increasing energies or using multiple passes at single pulse. Clinical studies needs to be performed to investigate this further.


Assuntos
Derme/patologia , Derme/efeitos da radiação , Lasers de Gás , Terapia com Luz de Baixa Intensidade/métodos , Abdome/patologia , Abdome/efeitos da radiação , Adulto , Idoso , Biópsia por Agulha , Fracionamento da Dose de Radiação , Relação Dose-Resposta à Radiação , Face/patologia , Face/efeitos da radiação , Feminino , Humanos , Imuno-Histoquímica , Marcação In Situ das Extremidades Cortadas , Terapia com Luz de Baixa Intensidade/efeitos adversos , Masculino , Pessoa de Meia-Idade , Doses de Radiação , Valores de Referência , Medição de Risco , Adulto Jovem
18.
Lasers Surg Med ; 44(2): 131-42, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22180289

RESUMO

BACKGROUND AND OBJECTIVE: The skin is highly variable. This variation, although helpful for function, causes inconsistencies when assessed using subjective scales. The purpose of this study is to measure differences in skin on the face and abdomen using non-invasive, objective devices as a method to eliminate subjective error and help reduce intra- and inter-observer variability in clinical analysis. STUDY DESIGN/MATERIALS AND METHODS: Eighty-eight subjects between the ages of 18 and 61 were enrolled in this study. These subjects varied in age, ethnicity, and Fitzpatrick score. Facial analysis was performed by clinical evaluation and utilizing non-invasive objective devices which included the DermaScan C 20 MHz HFUS (Cyberderm, Broomall, PA), Tru Vu (Johnson and Johnson), BTC 2000 (SRLI Technologies, Nashville, TN), Derma Unit SSC3 (CK Electronic, Köln, Germany), and the Chromometer. RESULTS: Non-invasive devices were shown to be consistent and accurate through repeated measurement at each of the anatomical points with error rates of less than 5%. Chromometer measurements were able to categorize patients into Fitzpatrick level. DermaScan measurements demonstrated decreasing skin thicknesses associated with increasing age, smoking, and female gender. Derma Unit SSC 3 showed gender and sun exposure related differences in sebum concentration, pH, and moisture content. The Derma Unit SSC 3 sebum concentration also showed correlation with Tru Vu readings for clogged pores and bacterial activity. CONCLUSION: The skin assessment scales that are in use today are often prone to variability and inaccuracy due to their subjectivity. Use of the described objective non-invasive facial analysis method provides an accurate, objective analysis of human skin which can be used to measure changes pre- and post-operatively, or even screen patients prior to procedure to identify non-responders or those prone to adverse events. Utilization of these devices introduces a foundation on which a strong evidence-based approach to aesthetic medicine can be built.


Assuntos
Dermatologia/instrumentação , Exame Físico/instrumentação , Fenômenos Fisiológicos da Pele , Abdome , Adolescente , Adulto , Fatores Etários , Dermatologia/métodos , Estética , Face , Feminino , Humanos , Concentração de Íons de Hidrogênio , Masculino , Pessoa de Meia-Idade , Exame Físico/métodos , Sebo/metabolismo , Fatores Sexuais , Pele/química , Pele/metabolismo , Envelhecimento da Pele , Pigmentação da Pele , Adulto Jovem
19.
Ann Plast Surg ; 68(6): 555-8, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21629082

RESUMO

Seroma formation has been shown to be a multifactorial process in part due to dead space and the formation of raw surfaces, which produce large quantities of serous exudate. The purpose of this study is to evaluate the effect of quilting/progressive tension sutures (to reduce dead space) and fibrin sealant (to seal the raw surface) in combination on the seroma rate and length of drain placement in patients undergoing latissimus dorsi breast reconstruction. A retrospective review of 43 patients undergoing latissimus dorsi flap breast reconstruction was performed. The patients were divided into 2 groups: quilting sutures alone versus those with quilting sutures and fibrin sealant. Data regarding age, body mass index, smoking history, timing of reconstruction, type of breast surgery, radiation history, complications, length of drain placement, use of fibrin glue, and use of quilting/progressive tension sutures were collected for each patient. Results were analyzed statistically using unpaired t tests (P < 0.05). The quilting group included 19 patients with 24 donor sites. The mean drain placement duration was 21.5 days (range, 9-69 days). One patient in 19 developed a seroma, which was treated and resolved with aspiration. The seroma rate for the quilting only group was 5%. The quilting and sealant group included 23 patients with 26 donor sites. The quilting and sealant group had a mean duration of drain placement of 13.9 days (range, 6-38 days). This was a statistically reduced length of drainage (P = 0.04) compared with quilting only. The quilting and sealant group had 1 patient in 23 develop a seroma with a rate of 4% which compared with quilting only was not statistically significant (P = 0.4). The combination of quilting sutures and fibrin sealant directed at the 2 main mechanisms of seroma formation, (dead space and serous exudate, respectively) can decrease the duration of postoperative drain placement and does maintain low seroma rates.


Assuntos
Drenagem/métodos , Mamoplastia/métodos , Seroma/prevenção & controle , Retalhos Cirúrgicos , Técnicas de Sutura , Coleta de Tecidos e Órgãos/métodos , Adesivo Tecidual de Fibrina , Humanos , Mamoplastia/efeitos adversos , Mastectomia/métodos , Estudos Retrospectivos , Seroma/etiologia , Retalhos Cirúrgicos/efeitos adversos , Coleta de Tecidos e Órgãos/efeitos adversos
20.
Ann Plast Surg ; 68(3): 240-5, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-21629084

RESUMO

Patient satisfaction in breast surgery is dependent on achieving a balance among all aesthetic subunits. The purpose of this study is to identify which subunit of the breast women consider important and correlate this clinically to improve patient satisfaction following breast surgery. A total of 313 subjects (ages, 20-80) were surveyed using a 25-point survey instrument collected via a telemedicine form. The data was analyzed to determine clinical significance. Of the subjects, 63% selected the upper inner quadrant as the most important subunit. Furthermore, 66% of the subjects indicated defects located in this region would lead them to seek operative intervention and this was consistent for all subgroups. Based on these results, defects in the upper inner quadrant of the breast are more likely to cause patient dissatisfaction. Patient outcomes following surgery can be enhanced by restoring volume and minimizing scars in this upper medial subunit of the breast.


Assuntos
Mama/cirurgia , Mamoplastia/classificação , Mamoplastia/métodos , Mastectomia/métodos , Preferência do Paciente/estatística & dados numéricos , Satisfação do Paciente/estatística & dados numéricos , Adulto , Idoso , Idoso de 80 Anos ou mais , Mama/anatomia & histologia , Neoplasias da Mama/cirurgia , Cicatriz/classificação , Cicatriz/cirurgia , Estética , Feminino , Humanos , Pessoa de Meia-Idade , Mamilos/cirurgia , Vigilância da População , Inquéritos e Questionários , Texas , Adulto Jovem
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