ABSTRACT
The purpose of this study was to evaluate the effect of posterior septectomy size on surgical exposure and surgical freedom during the endoscopic transsphenoidal approach to the sella and parasellar region. Dissections were performed on 10 embalmed cadaver heads. Dissections started with wide bilateral sphenoidotomies, lateralization of middle turbinates, and a 5-mm posterior septectomy. The posterior septectomy was increased in 5-mm increments to a maximum of 35 mm, followed by bilateral middle turbinectomies. Surgical exposure was defined as the distance between the ipsilateral and contralateral limit of exposure as allowed by the posterior septum along a midsphenoid horizontal meridian. Surgical freedom was defined as the angle between the ipsilateral and contralateral limit. The mean baseline width of the posterior sphenoid sinus was 29.4 ± 3.7 mm. With a 5-mm septectomy, the mean width of surgical exposure was 21.1 ± 2.8 mm. The surgical exposure increased significantly with progressively larger posterior septectomy until a 20-mm posterior septectomy, after which no further increase in surgical exposure or freedom was obtained. Bilateral lateral opticocarotid recesses were accessible with a 15-mm posterior septectomy. The addition of bilateral middle turbinectomies did not significantly increase lateral exposure within the sphenoid sinus compared with middle turbinate lateralization.
ABSTRACT
BACKGROUND: The American Heart Association/American Stroke Association has recently endorsed telestroke. Telestroke has enhanced stroke diagnosis, increased tPA administration and improved long-term outcomes. However, many of the publication on telemedicine so far have been review articles. OBJECTIVES: We investigated the epidemiological features of telestroke patients and evaluated the difference between the transferred and non-transferred cohorts. METHODS: We collected data on telestroke consultation, between January 2012 and June 2013, regarding patient's age, gender, diagnosis, NIHSS, onset-to-spoke time (OTS), tPA administration and transfer status. Further data was obtained on transferred patients regarding discharge and endovascular interventions. RESULTS: The means of age, NIHSS and OTS time were the following: 67.59 years, 7.65 and 11.28h respectively. The proportion of transferred patients was 12.04% (280/2324); lower than what was previously reported. The overall rate of IV tPA administration was 11.98%. Transferred patients had a significantly higher NIHSS mean (10.93 vs. 6.73; P<0.001), and were more likely to have received IV-tPA at onset (25.57 vs. 9.67; P<0.001). The age, gender proportion, stroke mimic proportion, and the mean of OTS did not differ between the two-groups (0.49 vs. 0.31; P=0.38). A logistic regression showed that NIHSS (OR=1.06, P<0.001) and tPA administration at onset (OR=2.78, P<0.001) predict the transfer. Of the transferred patients, 4.5% received endovascular intervention. The mortality rate of transferred patients was 12.9%. Other outcomes were the following: 52% discharge to rehabilitation facilities, 29% discharge to home, and 8% discharge to long-term nursing facilities. CONCLUSION: Telestroke network is increasing the frequency of tPA usage in acute ischemic stroke and may decrease the need for transfer. Our aim was to optimize the stroke therapy to shorten the hospital stay and to increase the discharge home. This allows a better functional outcome and an additional benefit of cost-saving for the hospitals.
