| 5671. |
- Farnebo, Simon, et al.
(författare)
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The research question: the What, Why and How in hand surgery
- 2024
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Ingår i: Journal of Hand Surgery, European Volume. - : SAGE PUBLICATIONS LTD. - 1753-1934 .- 2043-6289.
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Identifying a good research question is one of the most important steps when laying the foundation of a research project. A good research question can aim to answer a hotly debated clinical issue, challenge a pre-existing dogma or make a contribution to specific aspects of a broader field of study. The difficulty in defining the question lies with pinpointing an important research topic or an area that is characterized by a lack of knowledge (the What), grasping the significance of how a precisely defined study can potentially impact on clinical practices (the Why) and determining the optimal study design tailored to answer the specific question (the How). These three domains constitute pivotal concepts in the process of shaping the research question.
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| 5672. |
- Farrell, James, et al.
(författare)
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Thoracic Morphology and Bronchial Narrowing Are Related to Pulmonary Function in Adolescent Idiopathic Scoliosis
- 2021
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Ingår i: Journal of Bone and Joint Surgery. American volume. - : LIPPINCOTT WILLIAMS & WILKINS. - 0021-9355 .- 1535-1386. ; 103:21, s. 2014-2023
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Tidskriftsartikel (refereegranskat)abstract
- Background: In adolescent idiopathic scoliosis (AIS), lung function impairment is not necessarily related to the coronal spinal deformity. Recently, right-sided bronchial narrowing has been reported in thoracic AIS. The aim of this study was to describe the relation of chest and spinal deformity parameters, bronchial narrowing, and lung volumes with pulmonary function in preoperative AIS. Methods: Spinal radiographs, low-dose computed tomographic (CT) scans of the spine including the chest, and pulmonary function tests were retrospectively collected for 85 preoperative patients with thoracic AIS in 2 centers and were compared with 14 matched controls. Three-dimensional lung and airway reconstructions were acquired. Correlation analysis was performed in which radiographic spinal parameters, CT-based thoracic deformity parameters (rib-hump index [RHi], spinal penetration index, endothoracic hump ratio, hemithoracic-width ratio), lung volume asymmetry, and bronchial cross-sectional area were compared with percent-of-predicted spirometry results. Results: Forty-one patients (48%) had a percent-of-predicted forced expiratory volume in 1 second (FEV1%) or percent-of-predicted forced vital capacity (FVC%) of <65%, and 17 patients (20%) had obstructive lung disease. All thoracic deformity parameters correlated significantly with FEV1% and FVC%; RHi was found to be the best correlate (r(s) = -0.52 for FEV1% and -0.54 for FVC%). Patients with AIS with impaired pulmonary function had hypokyphosis, a larger rib hump, increased spinal and thoracic rotation, a narrower right hemithorax, and increased intrusion of the spine into the chest. Spinal intrusion correlated with right-sided bronchial narrowing, relative right lung volume loss, and decreased FEV1% and FVC%. Multivariate regression including spinal and thoracic deformity parameters, lung volume asymmetry, and airway parameters could explain 57% of the variance in FEV1% and 54% of the variance in FVC%. Conclusions: Chest intrusion by the endothoracic hump is related to right-sided bronchial narrowing and lung function loss in preoperative AIS. The findings support the theory that ventilatory dysfunction in thoracic AIS is not only restrictive but frequently has an obstructive component, especially in patients with hypokyphosis. RHi is the most predictive chest parameter for lung function loss.
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| 5673. |
- Farris, Alton B., et al.
(författare)
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Banff Digital Pathology Working Group: Image Bank, Artificial Intelligence Algorithm, and Challenge Trial Developments
- 2023
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Ingår i: Transplant International. - : FRONTIERS MEDIA SA. - 0934-0874 .- 1432-2277. ; 36
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Tidskriftsartikel (refereegranskat)abstract
- The Banff Digital Pathology Working Group (DPWG) was established with the goal to establish a digital pathology repository; develop, validate, and share models for image analysis; and foster collaborations using regular videoconferencing. During the calls, a variety of artificial intelligence (AI)-based support systems for transplantation pathology were presented. Potential collaborations in a competition/trial on AI applied to kidney transplant specimens, including the DIAGGRAFT challenge (staining of biopsies at multiple institutions, pathologists visual assessment, and development and validation of new and pre-existing Banff scoring algorithms), were also discussed. To determine the next steps, a survey was conducted, primarily focusing on the feasibility of establishing a digital pathology repository and identifying potential hosts. Sixteen of the 35 respondents (46%) had access to a server hosting a digital pathology repository, with 2 respondents that could serve as a potential host at no cost to the DPWG. The 16 digital pathology repositories collected specimens from various organs, with the largest constituent being kidney (n = 12,870 specimens). A DPWG pilot digital pathology repository was established, and there are plans for a competition/trial with the DIAGGRAFT project. Utilizing existing resources and previously established models, the Banff DPWG is establishing new resources for the Banff community.
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| 5674. |
- Farrokhnia, Nina, et al.
(författare)
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Validating the PSOGI classification of peritoneal disease from non-carcinoid epithelial appendiceal neoplasms in the curative and palliative setting : an observational retrospective study
- 2022
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Ingår i: Journal of Gastrointestinal Oncology. - : AME Publishing Company. - 2078-6891 .- 2219-679X. ; 13:2, s. 859-870
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Tidskriftsartikel (refereegranskat)abstract
- Background: Few studies on long-term survival have been published since the new updated pseudomyxoma peritonei (PMP) classification was published in 2016. The aim was to investigate long-term survival according to the Peritoneal Surface Oncology Group International (PSOGI) classification and compare prognostic factors. Methods: From Uppsala University Hospital, consecutive patients referred for cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) from 2004 to 2017 with peritoneal disease from non-carcinoid mucinous epithelial appendiceal neoplasms were included in the study. The peritoneal disease was divided into four groups: mucin only, low-grade mucinous carcinoma peritonei (MCP-1), high-grade (MCP-2), and high-grade with signet ring cells (MCP-3). Survival curves were rendered, and prognostic factors were compared. Results: The study included 223 patients: 36 with mucin only, 112 with MCP-1, 70 with MCP-2, and 5 with MCP-3. Thirty-eight patients had a palliative debulking or open/close procedure. The 5-and 10-year overall survival was 97% and 97% for mucin only, 83% and 70% for MCP-1, 69% and 49% for MCP-2, with no patients still under follow-up after 5 years in the MCP-3 group. In a multivariable analysis, completeness of cytoreduction (CC) score 2-3 and PSOGI class MCP-3 were significantly associated with lower survival. The 5-year overall survival in the palliative setting was 40% vs. 44% (MCP-1 vs. MCP-2, P>0.05) with median survival 51 vs. 53 months, respectively. Conclusions: The PSOGI classification of PMP provides a solid differentiation of prognostic groups after CRS/HIPEC treatment, but not in the palliative setting.
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| 5675. |
- Farserotu, John, et al.
(författare)
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Smart Skin for tactile prosthetics
- 2012
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Ingår i: [Host publication title missing]. - 9781467312349 ; , s. 1-8
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Konferensbidrag (refereegranskat)abstract
- This paper provides an overview of a concept for a Smart Skin, for enabling tactile prosthetics that provide for a natural sensation of touch. The solution embeds miniature, ultra-low power, wireless sensors into the silicone coating of the prosthetic. The solution offers advantages in terms of scalability, ability to place the sensors almost anywhere, fault tolerance and potential ease of manufacturing.
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| 5676. |
- Farzaneh, Farokh
(författare)
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CLEFT LIP AND PALATE. CLINICAL STUDIES REGARDING SPEECH AND FACIAL GROWTH
- 2009
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Cleft lip and palate (CLP), the most common of all craniofacial anomalies, has an incidence about 2 per 1000 births in the Scandinavian countries. The Department of Plastic and Reconstructive Surgery in Malmö has been a regional centre in southern Sweden for the treatment of patients with CLP since 1954 with about 40 new cases of clefts each year. Speech and facial growth are important objectives in the treatment for CLP and these are thought to depend on the primary surgery during infancy. Between 1954 and 1976 we operated on the lip using Millard´s technique and the palate was repaired early according to von Langenbeck’s technique (L-group). From 1976 to 1996, the lip was repaired by a two-stage procedure – the Johansson-Randall concept. Palate repair was postponed to about 18 months of age and performed using Wardill’s technique (W-group). Hence, there was a unique opportunity to study two long periods during which different strategies of primary repair were used according to standardized protocols. Altogether 97 adult patients were investigated for this long term follow-up. The first two studies describe the outcome in patients with unilateral CLP (UCLP) regarding speech (I) and facial growth (II). Only slight speech quality differences were observed between the two groups. The findings possibly favour the L-groups, though at the expense of an increased need for a complementary speech improving operation. The L- and W-groups showed similar results regarding facial growth. Studies III and IV describe similarly the long-term outcome in patients with bilateral CLP (BCLP), respectively. Also in patients with BCLP, only minor differences were noted between groups L and W. However, as in UCLP, the outcome regarding speech possibly favoured the L-group. Concerning facial growth, the results were again compatible. UCLP is generally associated with the better results regarding speech and facial growth, in the long-term perspective. BCLP is associated with the more marked deviation of facial morphology, and the rate of complementary operations, including those intended to improve speech, is more frequent.
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| 5677. |
- Farzaneh, Farokh, et al.
(författare)
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Speech results in adult Swedish patients born with bilateral complete cleft lip and palate.
- 2009
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Ingår i: Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery. - : Informa UK Limited. - 1651-2073 .- 0284-4311. ; 43:4, s. 207-213
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Tidskriftsartikel (refereegranskat)abstract
- Thirty-six adult patients (26 men and 10 women) who had been operated on for bilateral complete cleft lip and palate (BCLP) were evaluated with regard to long-term follow-up consisting of clinical investigation, perceptual speech analysis, and self-estimation of quality of speech. Twenty-six had had a von Langenbeck repair at the age of 14 months (L-14 group), and 10 a Wardill repair at the age of 18 months (W-18 group). Statistical comparisons between the groups were made by univariate and multiple logistic regression analyses. Both groups had a large percentage of hypernasality despite a high incidence of velopharyngeal flaps in both. There were no significant differences between the groups regarding any of the analysed speech variables. The outcomes of hypernasality, nasal escape, velopharyngeal friction sounds, hyponasality, and general impression indicate, however, a slightly better result for the L-14 group.
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| 5678. |
- Farzaneh, Farokh, et al.
(författare)
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Speech results in adult Swedish patients born with unilateral complete cleft lip and palate.
- 2008
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Ingår i: Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery. - : Informa UK Limited. - 1651-2073 .- 0284-4311. ; 42:1, s. 7-13
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Tidskriftsartikel (refereegranskat)abstract
- Sixty-one adult patients (34 men and 27 women) who were operated on for unilateral complete cleft lip and palate (UCLP) were followed up from 1996-2001 by clinical investigation, perceptual speech analysis, and self-estimation of quality of speech. Thirty-four had had a von Langenbeck repair at the age of 8 months (L-8 group), and 27 a Wardill repair at the age of 18 months (W-18 group). Statistical comparisons were made by univariate and multiple logistic regression analyses. The L-8 group had a slightly better general outcome but at the expense of a greater incidence of velopharyngeal flaps. There was no significant difference in hypernasality, being 7/34 (21%) of the patients in the L-8 group, compared with 9/27 (33%) in the W-18 group. Compared with findings reported previously of patients with isolated cleft palate (CP) who were treated and investigated under the same circumstances, the speech outcome in the group with UCLP was found to be significantly better.
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| 5679. |
- Farzaneh, Farokh, et al.
(författare)
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Tissue expansion 1984-1999: A 15-year review.
- 2006
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Ingår i: Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery. - : Informa UK Limited. - 1651-2073 .- 0284-4311. ; 40:2, s. 89-92
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Tidskriftsartikel (refereegranskat)abstract
- We assessed all patients who underwent tissue expansion, excluding breast reconstructions, between 1984 and 1999. A total of 237 patients had 257 expansions, normally for distorted scars, 202 of 257 cases (79%). Their mean age was 27 (range 7- 67) years, most being women, 149 of 237 (63%). The mean duration of expansion was 16 weeks (range 0.4-118). The most common site was the skull (61/257). Prophylactic antibiotics were used in 224 of 257 (86%) at the time of expander insertion and 147 of 257 (56%) at the removal of the expander. Sixty-two patients (24%) had minor complications and 34 (13%) had major complications. Tissue expansion can be used with a currently acceptable failure rate though we continue to strive to lower this further.
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| 5680. |
- Farzaneh, Farokh, et al.
(författare)
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von Langenbeck procedures at 8 months or Wardill at 18 months for primary repair of cleft palate in adult Swedish patients with unilateral complete cleft lip and palate: A study of facial growth.
- 2008
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Ingår i: Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery. - : Informa UK Limited. - 1651-2073 .- 0284-4311. ; 42:2, s. 67-76
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this study was to compare facial growth in patients with unilateral complete cleft lip and palate (UCLP) in whom the palate was repaired with the von Langenbeck procedure at 8 months (L-8), or the Wardill procedure at 18 months (W-18). A total of 151 unaffected subjects were used as a reference series. Sixty-one adult patients, 34 in the L-8 group and 27 in the W-18 group, were investigated clinically and with lateral skull radiography and also filled out a questionnaire about their dental condition. Multiple linear regression was used to analyse the effects of the surgical strategy, sex, and the presence of a velopharyngeal flap on several dependent variables indicating sagittal jaw relations, vertical jaw relations, and inclination of incisors. The UCLP group was characterised by a short (n-sp) and retrusive maxilla (s-n-ss) and a retrusive mandible for women (s-n-sm), larger maxillary inclination (NSL/NL), more retroclined lower incisors (IL(I)/ML), shorter upper facial heights (n-sp) and normal total face height (n-gn) than the reference group. In the UCLP group there were significant differences between men and women in mandibular prognathism (s-n-sm), maxillary/mandibular relations (ss-n-sm), maxillary inclination (NSL/NL), total anterior facial height (n-gn), and upper anterior facial height (n-sp). Lateral crossbite was found in 20% of the UCLP group. The prevalence was similar in the L-8 and W-18 groups. Almost 80% of the patients in the UCLP group considered that their dental condition was good. The choice of surgical strategy had no significant influence on the variables measured on facial morphology.
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