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首页> 外文期刊>British journal of ophthalmology >Intraocular pressure and pulsatile ocular blood flow after retrobulbar and peribulbar anaesthesia.
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Intraocular pressure and pulsatile ocular blood flow after retrobulbar and peribulbar anaesthesia.

机译：眼球后和眼球周麻醉后的眼压和脉动眼血流量。

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AIMS: This study investigated the effect of peribulbar and retrobulbar local anaesthesia on intraocular pressure (IOP) and pulsatile ocular blood flow (POBF), as such anaesthetic techniques may adversely affect these parameters. METHODS: 20 eyes of 20 patients who were to undergo phacoemulsification cataract surgery were prospectively randomised to receive peribulbar or retrobulbar anaesthesia. The OBF tonometer (OBF Labs, Wiltshire, UK) was used to simultaneously measure IOP and POBF before anaesthesia and 1 minute and 10 minutes after anaesthesia. Between group comparisons of age, baseline IOP, and baseline POBF were performed using the non-parametric Mann-Whitney test. Within group comparisons of IOP and POBF measured preanaesthesia and post-anaesthesia were performed using the non-parametric Wilcoxon signed ranks test for both groups. RESULTS: There was no statistically significant IOP increase post-anaesthesia in either group. In the group receiving peribulbar anaesthesia, there was a significant reduction in POBF initially post-anaesthesia which recovered after 10 minutes. In the group receiving retrobulbar anaesthesia, there was a persistent statistically significant reduction in POBF. CONCLUSIONS: Retrobulbar and peribulbar injections have little effect on IOP. Ocular compression is not needed for IOP reduction when using local anaesthesia for cataract surgery. Conversely, POBF falls, at least for a short time, when anaesthesia for ophthalmic surgery is administered via a retrobulbar route or a peribulbar route. This reduction may be mediated by pharmacologically altered orbital vascular tone. It may be safer to use other anaesthetic techniques in patients with ocular vascular compromise.
机译：目的：本研究调查了眼球周围和眼球后局部麻醉对眼内压（IOP）和搏动性眼血流量（POBF）的影响，因为这种麻醉技术可能会对这些参数产生不利影响。方法：对接受超声乳化白内障手术的20例患者中的20眼进行前瞻性随机分组，以进行球周或球后麻醉。使用OBF眼压计（OBF Labs，英国威尔特郡）在麻醉前以及麻醉后1分钟和10分钟同时测量IOP和POBF。使用非参数Mann-Whitney检验进行年龄，基线眼压和基线POBF的组间比较。在组内对IOP和POBF进行比较，使用非参数Wilcoxon符号秩和检验对两组进行麻醉前和麻醉后的测量。结果：两组麻醉后眼压均无统计学意义的增加。在接受球周麻醉的组中，麻醉后最初的POBF明显降低，并在10分钟后恢复。在接受球后麻醉的组中，POBF持续存在统计学上的显着降低。结论：球后和球周注射对眼压的影响很小。当使用局部麻醉进行白内障手术时，不需要眼压来减少IOP。相反，当通过后球途径或球周途径进行眼科手术的麻醉时，POBF至少在短时间内下降。这种减少可以通过药理学改变的眼眶血管张力来介导。对于眼部血管受损的患者，使用其他麻醉技术可能更安全。

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