Search results for " Nerve"

Manejo perioperatorio de pacientes portadores de sistemas electrónicos implantables para el control del dolor crónico

2019

A second-degree atrioventricular block with double escape rhythm secondary to paroxysmal vagal hypertonia.

2017

Gait Impairment in a Rat Model of Focal Cerebral Ischemia

2012

The availability of proper tests for gait evaluation following cerebral ischemia in rats has been limited. The automated, quantitative CatWalk system, which was initially designed to measure gait in models of spinal cord injury, neuropathic pain, and peripheral nerve injury, is said to be a useful tool for the study of motor impairment in stroke animals. Here we report our experiences of using CatWalk XT with rats subjected to transient middle cerebral artery occlusion (MCAO), during their six-week followup. Large corticostriatal infarct was confirmed by MRI in all MCAO rats, which was associated with severe sensorimotor impairment. In contrast, the gait impairment was at most mild, which i…

Total mesorectal excision - does the choice of dissection technique have an impact on pelvic autonomic nerve preservation?

2011

Background The aim of this experimental study was to assess the quality of pelvic autonomic nerve preservation of different dissection techniques.

Pelvic Autonomic Nerve Preservation during Total Mesorectal Excision (TME) from Werner Kneist

2017

According to the German guideline for “Colorectal Cancer,” total mesorectal excision (TME) removes the cancer located at the central and lower thirds of the rectum and the pelvic floor while preserving the superior hypogastric plexus (SHP), the hypogastric nerves, and the inferior hypogastric plexus (IHP) (recommendation level A, level of evidence 1b, strong consensus). Intraoperative nerve damage is to be avoided to preserve postoperative quality of life with the premise of radical surgery. It is particularly necessary to preserve autonomously controlled urogenital and anorectal functions. Among other things, this presumes a fundamental understanding of current events on surgical topograph…

Surgical and anatomical basis of autonomic nerve-preserving mesorectal excision for rectal cancer

2003

Adequate knowledge of the anatomy of the pelvis is a prerequisite to carry out a correct surgical technique in resection of rectal cancer. In this way, we can perform radical surgery, preserve the autonomic nerves and decrease local recurrence and urinary and sexual morbidity. The key to all this and the difference in results depends on a meticulous and detailed surgical technique.

The impact of sacral root anatomy on selective electrical stimulation for bladder evacuation.

1998

Although different structures have been studied with electrostimulation to elicit bladder evacuation, only the sacral root remains feasible for clinical application at present. However, the resultant concomitant contractions of the bladder and sphincteric muscles have been the principal problem over the last few decades. Attempts to identify fibers within the sacral ventral root that innervate the detrusor predominantly have been made by microsurgery alone or in combination with advanced electrical blocking techniques. This article evaluates our past and present efforts to achieve voiding in light of the mixed nature of sacral root anatomy.

Focus on functional delayed central sleep apnea following cervical laminectomy. An example of respiratory dysfunction in restorative neurosurgical pr…

2017

In sleep-related breathing disorders, sleep apnea is a clinical symptom that can be categorized as obstructive sleep apnea (OSA) or mixed apnea by analysis using poly-somnography. The occurrence of delayed central sleep apnea (CSA) is an extremely rare complication of cervical laminectomy for spondylotic myelopathy. So far only three studies concerning such an event have been reported in the literature. Naim-ur-Rahman, in 1994, reported a case of postoperative CSA following C3-C6 laminectomy, and Visocchi and colleagues, in 2014, in two studies, stressed the lack of association with any other neurological sign of spinal cord damage. No definitive mechanism has been recognized so far for del…

Facial nerve schwannoma involving middle cranial fossa: When the unilateral sensorineural hearing loss guide to the correct diagnosis

2011

The Facial Nerve Schwannoma is a rare tumor and it seldom involved the middle cranial fossa. Facial nerve schwannoma has various manifestations, including facial palsy but unfortunately facial nerve is very resistant to compression and often facial nerve paralysis or a facial weakness are not present. We present a case of giant facial nerve schwannoma involved the middle cranial fossa without facial nerve paralysis. In these cases the unilateral hearing loss (if present) guide to a correct diagnosis.

Case report: absence of the right piriformis muscle in a woman

2018

We report a very rare case of a unilaterally absent piriformis muscle in a 60 year old woman. Accompanying variations comprised a common gluteal artery (instead of two distinct superior and inferior gluteal arteries), and an absent gemellus inferior muscle. The contralateral left side showed a normally developed piriformis muscle. In hominoids, the piriformis is constant, but is regularly missing in several other vertebrates. The piriformis muscle is an anatomical landmark for ultrasound investigations and ultrasound-guided interventions in the deep gluteal region such as a superior gluteal nerve block or even a sacral plexus block, also for any surgical approach such as total hip arthropla…