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1.
J Am Coll Surg ; 236(3): 476-483, 2023 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-36729765

RESUMO

BACKGROUND: In 2015, the American College of Surgeons (ACS) created a new hospital improvement program to enhance the performance of pediatric care in US hospitals. The Children's Surgery Verification (CSV) Quality Improvement Program is predicated on the idea that pediatric surgical patients have improved outcomes when treated at children's hospitals with optimal resources. Achieving ACS level I CSV designation at pediatric trauma centers may lead to greater benefits for pediatric trauma patients; however, the specific benefits have yet to be identified. We hypothesize that achieving the additional designation of ACS level I CSV is associated with decreased narcotic use perioperatively and improved efficiency when managing pediatric patients with femur fractures. STUDY DESIGN: This study is a retrospective analysis of traumatic pediatric orthopaedic femur fractures treated at a verified level I pediatric trauma center before and after CSV designation (2010 to 2014 vs 2015 to 2019). Efficiency parameters, defined as time from admission to surgery, duration of surgery, and duration of hospital stay, and narcotic administration in oral morphine equivalents (OMEs) were compared. RESULTS: Of 185 traumatic femur fractures analyzed, 80 occurred before meeting ACS level I CSV criteria, and 105 occurred after. Post-CSV, there was a significant decrease in mean wait time from admission to surgery (16.64 hours pre-CSV, 12.52 hours post-CSV [p < 0.01]) and duration of hospital stay (103.49 hours pre-CSV, 71.61 hours post-CSV [p < 0.01]). Narcotic usage was significantly decreased in both the preoperative period (40.61 OMEs pre-CSV, 23.77 OMEs post-CSV [p < 0.01]) and postoperative period (126.67 OMEs pre-CSV, 45.72 OMEs post-CSV [p < 0.01]). CONCLUSIONS: Achieving ACS level I CSV designation is associated with increased efficiency and decreased preoperative and postoperative narcotic use when treating pediatric trauma patients.


Assuntos
Fraturas Ósseas , Cirurgiões , Criança , Humanos , Estados Unidos , Estudos Retrospectivos , Entorpecentes , Centros de Traumatologia , Hospitais Pediátricos , Fêmur
2.
Bone ; 143: 115761, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33217628

RESUMO

Pulsed electromagnetic field (PEMF) treatments stimulate bone formation activities though further work is needed to optimize its therapeutic benefit. PEMF can generate local potential gradients and electric currents that have been suggested to mimic bone electrochemical responses to load. In line with this reasoning, a recent publication reported that PEMF application on isolated bone tissue induced detectable micro-vibrations (doi:https://doi.org/10.1109/TMAG.2016.2515069). To determine the ability of PEMF to intervene in a rat model of osteoporosis, we tested its effect on trabecular and cortical bone following ovariectomy. Four PEMF treatments, with increasing sinusoidal amplitude rise with time (3850 Hz pulse frequency and 15 Hz repetition rate at 10 tesla/sec (T/s), 30 T/s, 100 T/s, or 300 T/s), were compared to the efficacy of an osteoporosis drug, alendronate, in reducing levels of trabecular bone loss in the proximal tibia. Herein, the novel findings from our study are: (1) 30 T/s PEMF treatment approached the efficacy of alendronate in reducing trabecular bone loss, but differed from it by not reducing bone formation rates; and (2) 30 T/s and 100 T/s PEMF treatments imparted measurable alterations in lacunocanalicular features in cortical bone, consistent with osteocyte sensitivity to PEMF in vivo. The efficacy of specific PEMF doses may relate to their ability to modulate osteocyte function such that the 30 T/s, and to a lesser extent 100 T/s, doses preferentially antagonize trabecular bone resorption while stimulating bone formation. Thus, PEMF treatments of specific magnetic field magnitudes exert a range of measurable biological effects in trabecular and cortical bone tissue in osteoporotic rats.


Assuntos
Doenças Ósseas Metabólicas , Campos Eletromagnéticos , Alendronato/farmacologia , Alendronato/uso terapêutico , Animais , Remodelação Óssea , Feminino , Humanos , Ovariectomia , Ratos , Microtomografia por Raio-X
3.
Curr Osteoporos Rep ; 17(4): 157-168, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31227998

RESUMO

PURPOSE OF REVIEW: In perilacunar/canalicular remodeling (PLR), osteocytes dynamically resorb, and then replace, the organic and mineral components of the pericellular extracellular matrix. Given the enormous surface area of the osteocyte lacuna-canalicular network (LCN), PLR is important for maintaining homeostasis of the skeleton. The goal of this review is to examine the motivations and critical considerations for the analysis of PLR, in both in vitro and in vivo systems. RECENT FINDINGS: Morphological approaches alone are insufficient to elucidate the complex mechanisms regulating PLR in the healthy skeleton and in disease. Understanding the role and regulation of PLR will require the incorporation of standardized PLR outcomes as a routine part of skeletal phenotyping, as well as the development of improved molecular and cellular outcomes. Current PLR outcomes assess PLR enzyme expression, the LCN, and bone matrix composition and organization, among others. Here, we discuss current PLR outcomes and how they have been applied to study PLR induction and suppression in vitro and in vivo. Given the role of PLR in skeletal health and disease, integrated analysis of PLR has potential to elucidate new mechanisms by which osteocytes participate in skeletal health and disease.


Assuntos
Matriz Óssea/metabolismo , Remodelação Óssea/fisiologia , Osteócitos/metabolismo , Matriz Óssea/ultraestrutura , Anidrases Carbônicas/metabolismo , Catepsina K/metabolismo , Linhagem Celular , Homeostase , Humanos , Concentração de Íons de Hidrogênio , Imageamento Tridimensional , Metaloproteinases da Matriz/metabolismo , Microscopia Confocal , Microscopia Eletrônica de Varredura , Osteócitos/enzimologia , Osteócitos/ultraestrutura , ATPases Translocadoras de Prótons/metabolismo , Microtomografia por Raio-X
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