Aim:Prevention of paralegia,a serious complication,during the removal of intramedullary tumors have been well *** no assured prophylaxis have yet been *** cord ischemia is believed to be the major cause of *** conduct...
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Aim:Prevention of paralegia,a serious complication,during the removal of intramedullary tumors have been well *** no assured prophylaxis have yet been *** cord ischemia is believed to be the major cause of *** conducted an experimental study to define the relationship between the change of TceMEP in different levels of permanent spinal cord ischemic injury of Reversible phase and the neurologic deficits or histopathological *** l:The characteristics of the spinal cord blood supply were studyed in a rabbits *** latex rubber was selectively injected into the lumbar arteries and distriution to the anterior spinal artery was Observed and photographed;Experiment 2:The lumbar arteries were selectively ligation in different *** TceMEPs were recorded within5 minutes after the *** function was asessed after anaesthesia conscious and 2 days after ligation,and their spinal cords were removed for histologic *** relationship between the variation of the TceMEP and the Motor function or Pathological damage after spinal cord injury was ***:The lumbar artery of Rabbit is Chevron's and convenient for *** Characteristic of cross-regional and the role of collateral of Spinal cord blood *** amplitude is stable within five minutes after spinal cord *** amplitude changes of reversible stage is positive relationship with motor function of " Wake-up test" and 2 days after ligation,The Pearson correlation coefficient is 0.977 and0.933,p< *** amplitude changes of reversible stage is positive relationship with Pathological damage,The Pearson correlation coefficient is 0.971,p<***:TceMEP is sensitive to spinal cord ischemia *** cord ischemic injury can be detected in an early and reversible stage with TceMEP monitoring *** can be taken to prevent the occurrence of irreversible spinal cord injury,TceMEPs,therefor
BACKGROUND:Nasopharygealfibroangioma(NPF) can be approached through lateral rhinotomy,the middle skull fossa approach and the transcranial-facial combined *** is complicated and thus results in more insults,and when a...
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BACKGROUND:Nasopharygealfibroangioma(NPF) can be approached through lateral rhinotomy,the middle skull fossa approach and the transcranial-facial combined *** is complicated and thus results in more insults,and when adopted,the total resection rate of tumor is still *** nasal endoscope is minimally invasive,the dead angles of a craniotomy,such as sphenoid sinus,maxillary sinus,and nasopharynx are easily approached by an *** rhinotomy have to make facial incision and affects maxillary bone *** combined the craniotomy and endoscopic approach intending to take advantages of the two ***:Twelve NPF patients who underwent craniotomy with endoscopic assistance from March 2002 to July 2008 at the Beijing Tongren Hospital were *** patients were *** ages ranged from 11 to 33 *** main symptoms were visual deterioration,exophthalmos,nasal obstruction,epistaxis and pharynx nasal is *** diagnosis was based on CT,MRI and digital subtraction angiography(DSA).All patients had intracranial encroachment and all underwent DSA and embolism treatment were taken before *** patients had a pterionalcraniotomy,five had a frontal-temporal-orbital-zygomatic *** of the tumor was resected piecemeal,then removed through the sphenoidal ***,using an endoscope in the nasal cavity,tumor in nasal cavity was resected and removed through the sphenoidal sinus,observing the dead angle of the craniotomy and confirming that sinus drainage was ***:The tumor was removed completely in 11 patients and partially resected in one patient because of *** patient had an infection after the operation and one patient had cerebrospinal rhinorrhea 3 years after surgery that was remediated by endoscopic ***:Craniotomy with endoscopic assistance in the treatment of NPF was minimally invasive,safe and efficient,and avoided facial incision.
Objective:Different levels of Spinal cord ischemia Animal models were established by the methods of selective ligation lumbar artery from cranio-caudal direction between renal artery and aortic bifurcation,The change ...
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Objective:Different levels of Spinal cord ischemia Animal models were established by the methods of selective ligation lumbar artery from cranio-caudal direction between renal artery and aortic bifurcation,The change of Transcranial electrical stimulation motor evoked potentials were studied to enable its use for future studies of spinal cord ***:33 Newzerland rabbits were randomly divided into6 groups:with 5 rabbits at each Experimental group,group 1ligation of lumbar artery at 1 leve 1(LI);group 2 at 2levels(L1-L2);group 3 at 3 levels(L1-L3);group 4 at 4evels(L1-L4);group 5 at 51evels(L1-L5);with 8 rabbits at the sham group,no ligation;Transcranial electrical stimulation motor evoked potentials were recored at Different time points,before Vascular ligation,30 minutes after vascular ligation,2 days after vascular *** function were assessed after Narcotic conscious and 2 days after vascular *** Specimens were taken two days after ligation for histopathologic ***:(1)、With the increase of the number of ligation,The transient extension of the Latency became clear,but There were no significant differences in Statistical analysis,Analysis of variance After ligation at the same time in each group and t test Before and after ligation,the P>0.05;(2),1,2ligation will not cause ischemic spinal cord damage,There were no significant differences,Before and after ligation,the P>0.05;With the increase in the number of ligation,the ratio of Amplitude before and after ligation Gradually reduce,the p <0.05 in the 3-5 ligation ***:(1)、Ligation of Segmental spinal cord vessels in 1 or 2 levels Will not cause ischemic damage of spinal cord,Different levels of Animal model of spinal cord ischemia can be made after 3、4 or 5 levels of ligation.(2)、The Amplitude is More sensitive to Spinal cord ischemia than Latency.(3)>spinal cord function can be predicted by Early changes in the amplitude.
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