Mechanism of extension of spinal anaesthesia by extradural injection of local anaesthetic.
نویسندگان
چکیده
We have examined the effect of extradual injection of 0.5% bupivacaine or normal saline on the progression of spinal anaesthesia in 28 patients undergoing Caesearean section. Three groups were studied. Subarachnoid anaesthesia was established in all patients. Group A (n = 10), the control, received no extradural injection for 20 min. Group B (n = 9) received extradural bupivacaine 10 ml and group C (n = 9) received extradual saline 10 ml 5 min after the subarachnoid injection. Sensory levels were compared at 5-min intervals and extension of the block was found to be similar in groups B and C and significantly faster than the control (P < 0.05). The quality of anaesthesia and incidence of adverse effects was similar for all three groups. We conclude that the mechanism of extension of spinal anaesthesia by extradural injection of local anaesthesia is largely a volume effect.
منابع مشابه
Sensitivity, specificity and predictive value of the sensation of warmth as a method of detecting inadvertent subarachnoid injection of local anaesthetic when performing extradural blocks.
In order to test if the rate of onset of sensation of warmth in the legs after the injection of 0.5% bupivacaine might discriminate between subarachnoid and extradural injection, 150 urological patients were allocated randomly to receive either spinal anaesthesia with isobaric (IS) or hyperbaric (HS) 0.5% bupivacaine, or extradural anaesthesia with isobaric 0.5% bupivacaine. The volume of the l...
متن کاملRopivacaine test dose in extradural anaesthesia.
Ropivacaine test dose in extradural anaesthesia Morton and colleagues 1 have described the use of 0.75% ropiva-caine for extradural anaesthesia, and in the process have clearly demonstrated the unsuitability of this agent as a test dose. The aim of an extradural test dose is to identify inadvertent i.v. or intrathecal catheter placement. It should have high sensitivity, but produce symptoms tha...
متن کاملExtradural abscess following local anaesthetic and steroid injection for chronic low back pain.
A case is described of extradural abscess following extradural injection of local anaesthetic and steroid for the management of chronic low back pain. The common signs and symptoms are reviewed, possible causes discussed and the association with diabetes stressed.
متن کاملAccidental subdural catheterization: radiological evidence of a possible mechanism for spinal cord damage.
We describe the inadvertent subdural insertion of a lumbar extradural catheter in a primiparous woman in labour. A small quantity of local anaesthetic resulted in extensive motor and sensory block. Computed tomography performed after contrast injection demonstrated unequivocally that the catheter was in the subdural space. The catheter and injected fluid produced considerable displacement of th...
متن کاملZones of differential sensory block during extradural anaesthesia.
We have measured spinal segmental levels of anaesthesia to light touch (LT), pinprick (PP) and cold temperature discrimination (TE) during 2% lignocaine extradural anaesthesia in 22 patients, to determine if zones of differential sensory block develop during extradural anaesthesia and, if so, the extent to which TE extends beyond PP or LT levels and how age affects differential block. The media...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- British journal of anaesthesia
دوره 69 5 شماره
صفحات -
تاریخ انتشار 1992