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- An Unexpected Infection in a Venous Leg Ulcer: a Case ReportPublication . Veríssimo, M; Guimarães, D; Casal, D; Carvalho, S; Matias, M; Barbosa, R; Bexiga, JProvidencia rettgeri is a Gram-negative bacillus that is most usually seen in urinary tract infections. Skin and soft tissue infections with P rettgeri are rare and there few case reports described in the literature. A 43-yearold woman presented to the emergency department with a leg ulcer of 3 months duration. Microbiological results isolated P rettgeri and Pseudomonas aeruginosa. She underwent surgical debridement and split-thickness skin grafting alongside IV antibiotic therapy and dressing care, with complete resolution of the wound 3 months after admission. The differential diagnosis of leg ulcers is wide and must include infection and venous insufficiency. Although venous ulcers are common, typically they are not responsible for rapid evolving ulcers that destroy tissues below the muscular fascia. In this case report, the authors hypothesise that P rettgeri had a major role in the severity of the ulcer in an otherwise healthy woman. A greater understanding of how P rettgeri affects wound pathophysiology is needed in order to distinguish between colonisation versus infection and discriminate bacterial synergy, as well as having better treatment guidelines.
- Comparison of Pain Management Strategies to Reduce Opioid Use Postoperatively in Free Flap Breast Reconstruction: Pain Catheter versus Nerve Block in Addition to Refinements in the Oral Pain Management RegimePublication . Stefansdottir, A; Vieira, L; Johnsen, A; Isacson, D; Rodriguez, A; Mani, MBackground Perioperative management in autologous breast reconstruction has gained focus in recent years. This study compares two pain management protocols in patients undergoing abdominal-based free flap breast reconstruction: a past protocol (PP) and a current protocol (CP)-both intended to reduce opioid consumption postoperatively. The PP entails use of a pain catheter in the abdominal wound and the CP consists of an intraoperative nerve block in addition to refinements in the oral pain management. We hypothesize that the CP reduces opioid consumption compared to PP. Methods From December 2017 to January 2020, 102 patients underwent breast reconstruction with an abdominal-based free flap. Two postoperative pain management strategies were used during the period; from December 2017 to September 2018, the PP was used which entailed the use of a pain catheter with ropivacaine applied in the abdominal wound with continuous distribution postoperatively in addition to paracetamol orally and oxycodone orally pro re nata (PRN). From October 2018 to January 2020, the CP was used. This protocol included a combination of intraoperative subfascial nerve block and a postoperative oral pain management regime that consisted of paracetamol, celecoxib, and gabapentin as well as oxycodone PRN. Results The CP group ( n = 63) had lower opioid consumption compared to the PP group ( n = 39) when examining all aspects of opioid consumption, including daily opioid usage in morphine milligram equivalents and total opioid usage during the stay ( p < 0.001). The CP group had shorter length of hospital stay (LOS). Conclusion Introduction of the CP reduced opioid use and LOS was shorter.
- Review of Piezoelectrical Materials Potentially Useful for Peripheral Nerve RepairPublication . Casal, D; Casimiro, MH; Ferreira, L; Leal, JP; Rodrigues, G; Lopes, R; Lino Moura, D; Gonçalves, L; Lago, J; Pais, D; Santos, PIt has increasingly been recognized that electrical currents play a pivotal role in cell migration and tissue repair, in a process named "galvanotaxis". In this review, we summarize the current evidence supporting the potential benefits of electric stimulation (ES) in the physiology of peripheral nerve repair (PNR). Moreover, we discuss the potential of piezoelectric materials in this context. The use of these materials has deserved great attention, as the movement of the body or of the external environment can be used to power internally the electrical properties of devices used for providing ES or acting as sensory receptors in artificial skin (e-skin). The fact that organic materials sustain spontaneous degradation inside the body means their piezoelectric effect is limited in duration. In the case of PNR, this is not necessarily problematic, as ES is only required during the regeneration period. Arguably, piezoelectric materials have the potential to revolutionize PNR with new biomedical devices that range from scaffolds and nerve-guiding conduits to sensory or efferent components of e-skin. However, much remains to be learned regarding piezoelectric materials, their use in manufacturing of biomedical devices, and their sterilization process, to fine-tune their safe, effective, and predictable in vivo application.
- Comparison of Outcomes in Immediate Implant-Based Breast Reconstruction: Acellular Dermal Matrix versus Inferior Dermal FlapPublication . Mata Ribeiro, L; Meireles, R; Brito, I; Costa, P; Rebelo, M; Barbosa, R; Choupina, M; Pinho, C; Ribeiro, MBackground Implant-based breast reconstruction has evolved tremendously in the last decades, mainly due to the development of new products and techniques that make the procedure safer and more reliable. The purpose of this study was to compare the outcomes in immediate one-stage breast reconstruction between acellular dermal matrix (ADM) and inferior dermal flap (IDF). Methods We conducted a retrospective comparative study of patients submitted to immediate breast reconstructions with an anatomical implant and ADM or IDF in a single center between 2016 and 2018. Outcomes evaluated included major complications, early complications, reinterventions, readmissions, and reconstruction failure. Simple descriptive statistics and univariate analysis were performed. Results A total of 118 breast reconstructions (85 patients) were included in the analysis. Patients in the IDF group had a higher body mass index (median = 27.0) than patients in the ADM group (median = 24). There were no statistically significant differences among both groups regarding immediate major complication, early complications, readmissions, and reinterventions. Conclusion There are no significant differences in complications between the ADM and IDF approach to immediate implant breast reconstruction. In patients with higher body mass index and large, ptotic breasts, we recommend an immediate implant reconstruction with IDF.
- Necrotizing Fasciitis Caused by Photobacterium damselae: The First Case in PortugalPublication . Guimarães, D; Ribeiro, L; Vieira, L; Coelho, RNecrotizing fasciitis is a severe soft tissue infection with a high mortality rate and therefore requires emergent surgical treatment. Several microorganisms can cause this infection, Photobacterium damselae being one of them, with only eight cases previously published in the literature. We report the first ever case of necrotizing fasciitis, caused by this microorganism, in Portugal. In this case report the patient survived after several debridement procedures and reconstruction of the upper limb with acellular dermal matrix and skin graft. A brief review of the Photobacterium damselae soft tissue infection reports as well as the clinical presentation, diagnosis, pathophysiology and treatment of necrotizing fasciitis can also be found in this paper.
- Retrospective Study of 114 Free Flaps for Head and Neck Oncological Reconstruction in a Portuguese Tertiary Cancer CenterPublication . Silva, A; Caixeirinho, P; Vilares, M; Semedo, C; Martins, M; Zagalo, C; Casal, DIntroduction: The Portuguese experience in microsurgical reconstruction of the head and neck after oncological surgery is scantly described. The primary aim of this study was to characterize the use of microvascular reconstruction after head and neck tumor resection in a Portuguese tertiary oncological centerMaterial and Methods: The authors retrospectively evaluated 114 microvascular free flap procedures performed for head and neck reconstruction after oncological resection in a department of Head and Neck Surgery of a Portuguese tertiary oncological center. Patients were operated on from January 2012 to May 2018. Data on patient demographic features, tumour characteristics, perioperative complications, postoperative aesthetic and functional results, survival time and time to recurrence were extracted. Results: Most tumours mandating microsurgical reconstruction were mucosal squamous cell carcinomas (85%) and were located in the oral region (95.6%). Around 45% of the patients had a T4a tumour and 30% a T2 tumour. Cervical metastases were present in 45.6% of the cases. The radial forearm flap and the fibular flap were the most commonly used microsurgical reconstructive options (58% and 41%, respectively). More than 80% of patients had no post-operative complications. Partial necrosis of the flap occurred in 6.1% of patients, while total flap necrosis occurred in 3.5% of cases. Aesthetic and functional results were considered at least satisfactory in all patients in which the flaps survived. Discussion: This study is by far the largest series of microsurgical head and neck reconstruction after oncological surgery reported by a single tertiary centre in Portugal. Survival and functional benefits are similar to those reported in other large oncological centres in the world. Conclusion: Microvascular reconstruction seems like a reliable treatment option in head and neck oncological surgery at our institution.
- Systematic Review and Meta-Analysis of Unconventional Perfusion Flaps in Clinical PracticePublication . Casal, D; Cunha, T; Pais, D; Videira, P; Coloma, J; Zagalo, C; Almeida, MA; Goyri O'Neill, JBackground: Although unconventional perfusion flaps have been in clinical use since 1975, many surgeons are still deterred from using them, because of some reports of high necrosis rates. Methods: The authors performed a systematic review and meta-analysis of all articles written in English, French, German, Spanish, and Portuguese on the clinical use of unconventional perfusion flaps and indexed to PubMed from 1975 until July 15, 2015. Results: A total of 134 studies and 1445 patients were analyzed. The estimated survival rate of unconventional perfusion flaps was 89.5 percent (95 percent CI, 87.3 to 91.3 percent; p < 0.001). Ninety-two percent of unconventional perfusion flaps (95 percent CI, 89.9 to 93.7 percent; p < 0.001) presented complete or nearly complete survival. Most defects mandating unconventional perfusion flap reconstruction were caused by trauma (63.6 percent), especially of the hand and fingers (75.1 percent). The main complication of all types of flaps was a variable degree of necrosis (7.5 percent of all unconventional perfusion flaps presented marginal necrosis; 9.2 percent and 5.5 percent had significant and complete necrosis, respectively). There was a positive correlation between the rate of postoperative infection and the need for a new flap (Pearson coefficient, 0.405; p = 0.001). Flaps used to reconstruct the upper limb showed better survival than those transferred to the head and neck or to the lower limb (p < 0.001). Conclusion: Unconventional perfusion flaps show high survival rates and should probably be used more liberally, particularly in the realm of upper limb reconstruction. Clinical question/level of evidence: Therapeutic, V.
- Predicting Incomplete Basal Cell Carcinoma Excisions - a Large Multidisciplinary Retrospective Analysis in a Tertiary CenterPublication . Duarte, B; Vieira, L; Pessoa e Costa, T; Ribeiro, L; João, A; Cabete, J; Varanda Pereira, AIntroduction: Surgical treatment of basal cell carcinomas is often performed by physicians with different surgical backgrounds. Collecting data from different surgical departments would better reflect their real-life surgical management.Objectives: To identify the rate, recurrence risk, and predictive factors accordingly to their relative contribution for an incomplete basal cell carcinoma excision in a large multidisciplinary real-life settingMethods: Retrospective cohort study of 2305 surgically treated lesions in different departments of a tertiary center.Results: There was a rate of incomplete excisions (15%) and a recurrence rate (35.5% vs. 6.8% in incomplete vs. complete excisions (p < .001)). A third of incompletely excised basal cell carcinoma (BCC) will recur over time. Stratified by relevancy, high-risk histological subtypes (micronodular (OR 5.10 - p < .001) and morpheaform (OR 5.42 - p < .001), smaller specimen sizes ( <0.5 cm or 0.5-1 cm, OR 3.99 and 2.49, respectively, p < .001) high-risk locations (OR 3.06 on the nose, OR 2.77 on the eyelids, p < .001), and recurrent BCCs (OR 1.72, p < .001). are the best predictors of an incomplete excision.Conclusions: Acknowledging the rate, recurrence risk and predictive factors for incomplete excisions may be beneficial for optimal preoperative planning and to prevent unwarranted re-interventions, morbidity, and healthcare costs.
- Seasonal Impact in Burn Profiles in a Dedicated Burn UnitPublication . Mata Ribeiro, L; Vieira, L; Sousa, J; Silva Guerra, AIntroduction: The number of burns in Portugal remains considerably large and therefore constitutes a major public health problem. There is a shortage of studies describing the epidemiological and clinical impact of seasonality on burn centre admissions, particularly in high income countries. Methods: This retrospective analysis included all patients (>18 years old) with acute burns admitted to a specialized Burn Center in Lisbon (Hospital São José) between 20 of September 2010 and 19 of September 2017 (7 years). Clinical data was obtained from electronic medical records. The patients were categorized into four groups, according to each season. Results: Six hundred and sixteen (616) patients were included in this analysis, the majority being male (55.2%). There were no significant differences between the number of patients admitted in each season nor in gender distribution. Older patients were admitted during winter. Hospitalisation time was higher for patients admitted in the winter and surface area injured was higher for those admitted during summer. Fire burns were the most common aetiology in all seasons. Work related burns and suicide attempts were more frequent in the summer. Most patients had more than one anatomical area affected (73.9%) and winter was specifically associated with more frequent isolated lower limb burns. Winter and fire burns were associated with deeper injuries. More patients underwent surgery during winter (80.7%) than in the remaining seasons (average 65%) but the average number of surgeries per season did not change significantly. The overall mortality rate was 6.8% and the need for mechanical ventilation was 28.9%. Concerning both variables we did not find major differences across seasons. Mortality was associated with older patients, deeper and more extensive burns and need for mechanical ventilation. Conclusion: Winter seems to be associated with older patients and with the most severe burns (deeper and more often needing surgery). This study was designed to fill the gap in seasonal burn profile in Portugal and it helps in establishing preventive strategies and better resource allocation.
- Impact of Body Mass Index, Age and Tobacco Use on the Outcomes of Immediate Breast Reconstruction with Implants and Acellular Dermal MatrixPublication . Mata Ribeiro, L; Meireles, R; Brito, I; Costa, P; Rebelo, M; Barbosa, R; Choupina, M; Pinho, C; Ribeiro, MBackground This study aimed to analyze the effect of body mass index (BMI), age, and tobacco use on alloplastic breast reconstruction. Methods We conducted a retrospective study of patients who submitted to immediate breast reconstructions with an anatomical implant and acellular dermal matrix in a single center between 2016 and 2018. Outcomes evaluated included immediate complications, early complications, reinterventions, readmissions, and reconstruction failure. Patients were divided into two groups concerning each potential risk factor (BMI < or ≥25; age < or ≥ 50 years; and smokers vs nonsmokers). Simple descriptive statistics and univariate analysis were performed. Results A total of 101 breast reconstructions (73 patients) were included in the analysis. The mean BMI was 24, and the mean age was 44.5 years old. Smokers accounted for 14 breast reconstructions (13.9%). The rate of early infections, mastectomy flap necrosis, and implant removal was significantly higher in overweight patients. The total volume of breast drainage was higher in the age ≥ 50 years group. Smoking did not alter the outcomes. Conclusions A BMI ≥ 25 is a risk factor for early infections and reconstructive failure. Age ≥ 50 years is associated with a higher volume of breast drainage but does not seem to impact the success of the reconstruction. Smoking does not appear to affect the outcomes significantly in this type of reconstruction. Surgeons should consider delaying the reconstruction or using autologous tissue when patients are overweight.