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https://www.readbyqxmd.com/read/29450878/antepartum-risk-factors-for-moderate-to-severe-neonatal-hypoxic-ischemic-encephalopathy-a-swedish-national-cohort-study
#1
Lena Liljestrom, Anna-Karin Wikstrom, Johan Agren, Maria Jonsson
INTRODUCTION: Our aim was to identify antepartum risk factors for neonatal hypoxic ischemic encephalopathy (HIE), with a focus on maternal body mass index and height. MATERIAL AND METHODS: National population-based cohort study of 692 428 live-born infants ≥ 36 gestational weeks in Sweden, 2009-2015. Data from the Swedish Medical Birth Register and the Swedish Neonatal Quality Register were linked. Short maternal stature was defined as ≤ 155 cm, and overweight as body mass index ≥ 25 kg/m 2 ...
February 16, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29444695/the-impact-of-manual-rotation-of-the-occiput-posterior-position-on-spontaneous-vaginal-delivery-rate-study-protocol-for-a-randomized-clinical-trial-rmos
#2
C Verhaeghe, E Parot-Schinkel, P E Bouet, S Madzou, F Biquard, P Gillard, P Descamps, G Legendre
BACKGROUND: The frequency of posterior presentations (occiput of the fetus towards the sacrum of the mother) in labor is approximately 20% and, of this, 5% remain posterior until the end of labor. These posterior presentations are associated with higher rates of cesarean section and instrumental delivery. Manual rotation of a posterior position in order to rotate the fetus to an anterior position has been proposed in order to reduce the rate of instrumental fetal delivery. No randomized study has compared the efficacy of this procedure to expectant management...
February 14, 2018: Trials
https://www.readbyqxmd.com/read/29443820/unstable-c1-fracture-managed-with-internal-fixation-using-lateral-mass-screws-a-case-report
#3
Jonathan C Yu, Thomas E Niemeier, Sakthivel R Manoharan
CASE: A 47-year-old woman presented with an unstable C1 fracture after falling down several stairs. She was found to have a sagittal split fracture of the right C1 lateral mass extending into the posterior arch. The fracture was treated with a direct posterior osteosynthesis of C1 using lateral mass screws. CONCLUSION: Surgical management of unstable C1 fractures has traditionally involved posterior fusion of C1 to C2 or fusion from the occiput to C2. These fusion procedures can be quite functionally limiting...
February 14, 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29430326/-adult-grisel-syndrome-and-cervical-skull-instability-transnasal-endoscopic-odontoidectomy-and-occipito-cervical-fusion-case-report-and-literature-review
#4
Roberto Herrera, Héctor Rojas, Ariel Estramian, Julieta Gómez, José Luis Ledesma, José Pablo, Julián Pastore
Background: Craniocervical junction pathology is infrequent in daily neurosurgical practice. In general, most of these lesions are of traumatic or rheumatic origin. Atlantoaxial instability of inflammatory origin (Grisel syndrome) is a rare entity of which only 16 adult cases have been reported in the literature. This pathology is characterized by the development of an osteolytic lesion at the level of the atlantoaxial joint after an infectious event, usually of the upper airways. Case Description: We present the case of a 76-year-old patient who attended our office for clinical symptoms of spinal instability secondary to an osteolytic lesion, with involvement of C1 and C2...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29403245/machined-cervical-interfacet-allograft-spacers-for-the-management-of-atlantoaxial-instability
#5
Mazda K Turel, Mena G Kerolus, Vincent C Traynelis
Background: The use of cervical interfacet spacers (CISs) to augment stability and provide solid arthrodesis at the atlantoaxial joint has not been studied in detail. The aim of this work is to report the outcomes with the use of machined allograft CISs at C1-2. Methods: A retrospective review of 19 patients who underwent an atlantoaxial fusion with the use of CISs was performed. All patients had instability documented with flexion and extension lateral radiographs...
October 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/29390372/dynamic-paraspinal-muscle-impingement-causing-acute-hemiplegia-after-c1-posterior-arch-laminectomy-a-case-report
#6
Naoki Notani, Masashi Miyazaki, Toyomi Yoshiiwa, Toshinobu Ishihara, Shozo Kanezaki, Hiroshi Tsumura
RATIONALE: Acute neurological deficits following spinal surgery commonly result from epidural hematoma, surgical trauma, vascular compromise, and graft or hardware impingement, with the cause identified by magnetic resonance imaging (MRI). We present a rare case of dynamic paraspinal muscle impingement after C1 posterior arch laminectomy, which was diagnosed by myelography, with no significant findings on MRI. PATIENT CONCERNS: An 81-year-old, severely obese male, was referred to our department for the treatment of vertebral disease of the lumbar spine...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29381931/biomechanical-evaluation-of-a-novel-integrated-artificial-axis-a-finite-element-study
#7
Yongqiang Zheng, Jianhua Wang, Suixiang Liao, Dongsheng Zhang, Jinshan Zhang, Limin Ma, Hong Xia
Various modified instruments are used for the anterior reconstruction of the tumor lesion affecting the second cervical vertebra, but there have been no reports regarding individual integrated artificial axis (IAA) prosthesis fabricated by selective laser melting. In the present work, a new type of IAA prosthesis has been designed with a 3-dimensional (3D) finite element model of normal occiput-the fourth cervical vertebra being established to assess its biomechanics. For easy comparison, another 3D finite element model is also established for the T-shaped Harms cage and an additional posterior fixation was performed on each model...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29366610/-occiput-posterior-presentation-at-delivery-materno-foetal-outcomes-and-predictive-factors-of-rotation
#8
V Othenin-Girard, M Boulvain, M-J Guittier
OBJECTIVES: To describe the maternal and foetal outcomes of an occiput posterior foetal position at delivery; to evaluate predictive factors of anterior rotation during labour. METHODS: Descriptive retrospective analysis of a cohort of 439 women with foetuses in occiput posterior position during labour. Logistic regression analysis to quantify the effect of factors that may favour anterior rotation. RESULTS: Most of foetuses (64%) do an anterior rotation during labour and 13% during the expulsive phase...
January 20, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29301014/pedicled-vascularized-bone-grafts-for-posterior-occipitocervical-and-cervicothoracic-fusion-a-cadaveric-feasibility-study
#9
Michael A Bohl, Michael A Mooney, Joshua S Catapano, Kaith K Almefty, Jay D Turner, Steve W Chang, Mark C Preul, Edward M Reece, U Kumar Kakarla
BACKGROUND: Arthrodesis is critical for achieving favorable outcomes in reconstructive spine surgery. Vascularized bone grafts (VBGs) have been successfully used to augment fusion rates in a variety of skeletal pathologies, and pedicled VBG has numerous advantages over free transfer VBG. Pedicled VBG has not previously been described for the posterior occipitocervicothoracic spine. OBJECTIVE: To identify, describe, and assess potential donor sites for pedicled VBGs from occiput to T12 using a cadaver model and to describe important technical considerations for graft harvest and placement...
December 30, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29279708/metachronous-development-of-meningothelial-meningioma-basal-cell-carcinoma-and-glioblastoma-multiforme-in-a-patient-with-pancreatic-incidentaloma
#10
Emanuil Naydenov, Venceslav Bussarsky, Kostadin Angelov, Marin Penkov, Sevdalin Nachev, Savina Hadjidekova, Draga Toncheva
We report the unique case of a 61-year-old male patient with known pancreatic incidentaloma who additionally developed 3 other histologically different tumors: left sphenoid wing meningothelial meningioma, basal cell carcinoma of the occiput, and right occipital lobe glioblastoma multiforme. The latter were totally removed with a favorable clinical outcome. The patient's family history was unremarkable, and no data on any previous head and neck irradiation were found.
September 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/29243973/cervical-sagittal-alignment-in-patients-with-adolescent-idiopathic-scoliosis-is-it-corrected-by-surgery
#11
Jae Hwan Cho, Chang Ju Hwang, Young Hyun Choi, Dong-Ho Lee, Choon Sung Lee
OBJECTIVE Cervical sagittal alignment (CSA) is related to function and quality of life, but it has not been frequently studied in patients with adolescent idiopathic scoliosis. This study aimed to reveal the change in CSA following corrective surgery, compare the cervical sagittal parameters according to curve types, and assess related factors for postoperative aggravation of CSA. METHODS The authors studied 318 consecutive patients with adolescent idiopathic scoliosis who underwent corrective surgery at a single center...
December 15, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29178393/what-makes-a-good-head-positioner-for-preventing-occipital-pressure-ulcers
#12
Rona Katzengold, Amit Gefen
Patients who are stationary endure prolonged soft tissue distortions and deformations at contact areas between their body and the support surface, which may lead to the onset of pressure ulcers (PUs) over time. A novel technology for patient positioning employs innovation in materials science, specifically viscoelastic materials with shape memory properties that compose the Z-Flo™ head positioner (Mölnlycke Health Care, Gothenburg, Sweden). Head positioners are generally known to reduce the occurrence of PUs in scalp tissues and the ears, but quantitative assessments of their biomechanical efficacy are missing in the literature...
November 27, 2017: International Wound Journal
https://www.readbyqxmd.com/read/29154264/the-effect-of-a-single-massage-based-on-the-tensegrity-principle-on-postural-stability-in-young-women
#13
Błażej Cieślik, Ireneusz Podsiadły, Michał Kuczyński, Bożena Ostrowska
OBJECTIVE: The aim of this study was to investigate the effects of normalized muscle tension via tensegrity-based massage on postural stability in a sample of female young adults. METHODS: Nineteen females aged 21.8 ± 1.9 years were recruited presenting abnormal tension at muscles adhering to any of the following structural sites: superior iliac spine, lateral sacropelvic surface, linea aspera at 1/2 of femur length, and superior nuchal line of the occiput. Balance and postural control were assessed during bipedal stance using a force platform in multiple conditions: hard surface or soft foam surface with the head in either a neutral posture or tilted backward...
November 6, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29137599/neonatal-outcomes-of-deliveries-in-occiput-posterior-position-when-delayed-pushing-is-practiced-a-cohort-study
#14
Kristina Dahlqvist, Maria Jonsson
BACKGROUND: To examine the impact of occiput posterior position, compared to occiput anterior position, on neonatal outcomes in a setting where delayed pushing is practiced. The specific aim was to estimate the risk of acidaemia. METHODS: Cohort study from a university hospital in Sweden between 2004 and 2012. Information was collected from a local database of 35,546 births. Umbilical artery sampling was routine. Outcomes were: umbilical artery pH < 7.00 and <7...
November 14, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29109633/comparison-of-ease-of-intubation-in-sniffing-position-and-further-neck-flexion
#15
Kiran Kumar Gudivada, Nirmala Jonnavithula, Sai Lakshman Pasupuleti, Chaitanya Prathyusha Apparasu, Syama Sundar Ayya, Gopinath Ramachandran
Background and Aims: Optimization of patient's head and neck position for the best laryngeal view is the most important step before laryngoscopy and intubation. The objective of this prospective crossover study was to determine the differences, if any, between the gold standard sniffing position (SP) and the further head elevation (HE) (neck flexion) with regard to the incidence of difficult laryngoscopy, intubation difficulty, and variables of the I ntubation Difficulty Scale (IDS) in adult patients undergoing elective surgery under general anesthesia...
July 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29091466/micro-mechanical-properties-of-different-sites-on-woodpecker-s-skull
#16
Yikun Ni, Lizhen Wang, Xiaoyu Liu, Hongquan Zhang, Chia-Ying Lin, Yubo Fan
The uneven distributed microstructure featured with plate-like spongy bone in woodpecker's skull has been found to further help reduce the impact during woodpecker's pecking behavior. Therefore, this work was to investigate the micro-mechanical properties and composition on different sites of Great Spotted woodpecker's (GSW) skull. Different sites were selected on forehead, tempus and occiput, which were also compared with those of Eurasian Hoopoe (EH) and Lark birds (LB). Micro structural parameters assessed from micro computed tomography (μCT) occurred significantly difference between GSW, EH and LB...
November 1, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29084406/a-retrospective-study-of-cervical-spine-mri-findings-in-children-with-abusive-head-trauma
#17
Lance S Governale, Farah W Brink, Charles P Pluto, Victoria A Schunemann, Rachel Weber, Jerome Rusin, Beth A Fischer, Megan M Letson
BACKGROUND/AIMS: Increasing attention has been given to the possible association of cervical spine (c-spine) injuries with abusive head trauma (AHT). The aims of this study were to describe c-spine MRI findings in hospitalized AHT patients. METHODS: This is a retrospective study of children under the age of 5 years with AHT admitted to hospital in 2004-2013. Those with c-spine MRI were identified, and the images were reviewed. RESULTS: 250 AHT cases were identified, with 34 (14%) undergoing c-spine MRI...
2018: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29078945/fetal-malpresentation-and-malposition-diagnosis-and-management
#18
REVIEW
Rachel A Pilliod, Aaron B Caughey
Fetal malpresentation and fetal malposition are frequently interchanged; however, fetal malpresentation refers to a fetus with a fetal part other than the head engaging the maternal pelvis. Fetal malposition in labor includes occiput posterior and occiput transverse positions. Both fetal malposition and malpresentation are associated with significant maternal and neonatal morbidity, which have significant impact on patients and providers. Accurate diagnosis of both conditions is necessary for appropriate management...
December 2017: Obstetrics and Gynecology Clinics of North America
https://www.readbyqxmd.com/read/29056023/-effects-of-improved-v-y-advancement-flap-with-major-artery-perforator-on-repairing-skin-and-soft-tissue-defects
#19
S T Zhou, M T Huang, J Z Zeng, P F Liang, M H Zhang
Objective: To explore the effect of improved V-Y advancement flap with major artery perforator on repairing several skin and soft tissue defects in whole body. Methods: From March 2015 to June 2017, 4 cases with pressure ulcer in sacrococcygeal region, 4 cases with pressure ulcer at ischial tuberosity, 2 cases with scalp and skull defects at occiput, 1 case with secondary wound after tumor resection in axillary region, and 2 cases with skin and soft tissue defects caused by other trauma were hospitalized, with disease duration ranging from 1 week to 6 months...
October 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29053084/intubation-biomechanics-validation-of-a-finite-element-model-of-cervical-spine-motion-during-endotracheal-intubation-in-intact-and-injured-conditions
#20
Benjamin C Gadomski, Snehal S Shetye, Bradley J Hindman, Franklin Dexter, Brandon G Santoni, Michael M Todd, Vincent C Traynelis, Robert P From, Ricardo B Fontes, Christian M Puttlitz
OBJECTIVE Because of limitations inherent to cadaver models of endotracheal intubation, the authors' group developed a finite element (FE) model of the human cervical spine and spinal cord. Their aims were to 1) compare FE model predictions of intervertebral motion during intubation with intervertebral motion measured in patients with intact cervical spines and in cadavers with spine injuries at C-2 and C3-4 and 2) estimate spinal cord strains during intubation under these conditions. METHODS The FE model was designed to replicate the properties of an intact (stable) spine in patients, C-2 injury (Type II odontoid fracture), and a severe C3-4 distractive-flexion injury from prior cadaver studies...
January 2018: Journal of Neurosurgery. Spine
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