Caracterización de pacientes con mielopatía espondilótica cervical intervenidos por disectomía anterior

Introduction: cervical spondylotic myelopathy is a common disease, which accounts for a quarter of all upper-limb paresthesia. Anterior graft discectomy is one of the most widely used surgical techniques in the world to treat this disease.Objective: to characterize patients with cervical spondylotic myelopathy who underwent surgery using the anterior discectomy with graft technique.Methods: a retrospective, descriptive, longitudinal study was conducted in 35 patients with cervical spondylotic myelopathy who underwent surgery using the anterior graft discectomy technique at “Lucia Iñiguez Landín” Clinical Surgical Teaching Hospital from January 2017 to December 2019. The variables studied were: age, sex, race, personal pathological history, signs and symptoms (before the surgery), cervical level affected, sequelae and complications.Results: male patients predominated (59,9 %), with ages between 45 and 60 years (45,71 %) and with personal pathological history of obesity (40 %). The prevailing clinical manifestations before surgery were hyperreflexia (65,71 %) and paresthesia (62,85 %). The most affected cervical segment was C5-C7 (91,42 %). The main complications were generalized hyperreflexia (17,14 %) and pain (8,57 %).Conclusions: patients with cervical spondylotic myelopathy surgically treated by the anterior discectomy with graft technique were mostly male, in ages after the fourth decade of life. Patients presented hyperreflexia before the surgery, and could develop generalized hyperreflexia as a complication.Introducción: la mielopatía espondilótica cervical es una enfermedad frecuente, que representa la cuarta parte de las parestesias en miembros superiores.  La disectomía anterior con injerto es una de las técnicas quirúrgicas más utilizadas en el mundo para tratar esta enfermedad.Objetivo: Caracterizar los pacientes con mielopatía espondilótica cervical intervenidos quirúrgicamente por la técnica disectomía anterior con injerto.Método: Se realizó un estudio observacional, descriptivo, longitudinal retrospectivo en 35 pacientes con mielopatía espondilótica cervical intervenidos quirúrgicamente por la técnica de disectomía anterior con injerto en el Hospital Clínico Quirúrgico Docente “Lucia Iñiguez Landín” en el período de enero del 2017 a diciembre del 2019. Las variables estudiadas fueron: edad, sexo, color de piel, antecedentes patológicos personales, signos y síntomas (antes de la operación), nivel cervical afectado, secuelas y complicaciones.Resultados: Se encontró predominio de pacientes masculinos (59,9 %), con edades entre 45 y 60 años (45,71 %) y con antecedentes patológicos personales de obesidad (40 %). Las manifestaciones clínicas que predominaron antes de la intervención quirúrgica fueron la hiperreflexia (65,71 %) y la parestesia (62,85 %). El segmento cervical más afectado fue C5-C7 (91,42 %). Las principales complicaciones fueron la hiperreflexia generalizada (17,14 %) y el dolor (8,57).Conclusiones: los pacientes con mielopatía espondilótica cervical intervenidos quirúrgicamente por la técnica disectomía anterior con injerto fueron de sexo masculino en su mayoría, con edades pasadas de la cuarta década de vida. Los pacientes presentaron hiperreflexia antes de la operación, pudiendo desarrollar hiperreflexia generalizada como complicación

Functional Changes in Muscle Afferent Neurones in an Osteoarthritis Model: Implications for Impaired Proprioceptive Performance

Impaired proprioceptive performance is a significant clinical issue for many who suffer osteoarthritis (OA) and is a risk factor for falls and other liabilities. This study was designed to evaluate weight-bearing distribution in a rat model of OA and to determine whether changes also occur in muscle afferent neurones.Intracellular recordings were made in functionally identified dorsal root ganglion neurones in acute electrophysiological experiments on the anaesthetized animal following measurements of hind limb weight bearing in the incapacitance test. OA rats but not naïve control rats stood with less weight on the ipsilateral hind leg (P = 0.02). In the acute electrophysiological experiments that followed weight bearing measurements, action potentials (AP) elicited by electrical stimulation of the dorsal roots differed in OA rats, including longer AP duration (P = 0.006), slower rise time (P = 0.001) and slower maximum rising rate (P = 0.03). Depolarizing intracellular current injection elicited more APs in models than in naïve muscle afferent neurones (P = 0.01) indicating greater excitability. Axonal conduction velocity in model animals was slower (P = 0.04).The present study demonstrates changes in hind limb stance accompanied by changes in the functional properties of muscle afferent neurones in this derangement model of OA. This may provide a possible avenue to explore mechanisms underlying the impaired proprioceptive performance and perhaps other sensory disorders in people with OA

Analysis of arterial intimal hyperplasia: review and hypothesis

which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Background: Despite a prodigious investment of funds, we cannot treat or prevent arteriosclerosis and restenosis, particularly its major pathology, arterial intimal hyperplasia. A cornerstone question lies behind all approaches to the disease: what causes the pathology? Hypothesis: I argue that the question itself is misplaced because it implies that intimal hyperplasia is a novel pathological phenomenon caused by new mechanisms. A simple inquiry into arterial morphology shows the opposite is true. The normal multi-layer cellular organization of the tunica intima is identical to that of diseased hyperplasia; it is the standard arterial system design in all placentals at least as large as rabbits, including humans. Formed initially as one-layer endothelium lining, this phenotype can either be maintained or differentiate into a normal multi-layer cellular lining, so striking in its resemblance to diseased hyperplasia that we have to name it "benign intimal hyperplasia". However, normal or "benign " intimal hyperplasia, although microscopically identical to pathology, is a controllable phenotype that rarely compromises blood supply. It is remarkable that each human heart has coronary arteries in which a single-layer endothelium differentiates earl

Induction chemotherapy followed by chemoradiotherapy versus chemoradiotherapy alone as neoadjuvant treatment for locally recurrent rectal cancer: study protocol of a multicentre, open-label, parallel-arms, randomized controlled study (PelvEx II)

Background A resection with clear margins (R0 resection) is the most important prognostic factor in patients with locally recurrent rectal cancer (LRRC). However, this is achieved in only 60 per cent of patients. The aim of this study is to investigate whether the addition of induction chemotherapy to neoadjuvant chemo(re)irradiation improves the R0 resection rate in LRRC. Methods This multicentre, international, open-label, phase III, parallel-arms study will enrol 364 patients with resectable LRRC after previous partial or total mesorectal resection without synchronous distant metastases or recent chemo- and/or radiotherapy treatment. Patients will be randomized to receive either induction chemotherapy (three 3-week cycles of CAPOX (capecitabine, oxaliplatin), four 2-week cycles of FOLFOX (5-fluorouracil, leucovorin, oxaliplatin) or FOLFORI (5-fluorouracil, leucovorin, irinotecan)) followed by neoadjuvant chemoradiotherapy and surgery (experimental arm) or neoadjuvant chemoradiotherapy and surgery alone (control arm). Tumours will be restaged using MRI and, in the experimental arm, a further cycle of CAPOX or two cycles of FOLFOX/FOLFIRI will be administered before chemoradiotherapy in case of stable or responsive disease. The radiotherapy dose will be 25 × 2.0 Gy or 28 × 1.8 Gy in radiotherapy-naive patients, and 15 × 2.0 Gy in previously irradiated patients. The concomitant chemotherapy agent will be capecitabine administered twice daily at a dose of 825 mg/m2 on radiotherapy days. The primary endpoint of the study is the R0 resection rate. Secondary endpoints are long-term oncological outcomes, radiological and pathological response, toxicity, postoperative complications, costs, and quality of life. Discussion This trial protocol describes the PelvEx II study. PelvEx II, designed as a multicentre, open-label, phase III, parallel-arms study, is the first randomized study to compare induction chemotherapy followed by neoadjuvant chemo(re)irradiation and surgery with neoadjuvant chemo(re)irradiation and surgery alone in patients with locally recurrent rectal cancer, with the aim of improving the number of R0 resections

Early revascularization is beneficial across all ages and a wide spectrum of cardiogenic shock severity : a pooled analysis of trials

A pooled analysis in cardiogenic shock due to acute coronary syndromes is desirable to assess the effect of early revascularization (ERV) across all ages and a wide spectrum of disease severity