Sub-Tenon Anesthesia

Guise, Philip A

doi:10.1097/00000542-200304000-00025

Cited by 114 publications

(24 citation statements)

References 15 publications

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“…SCH during the conjunctival incision is one of the disadvantages of sub-Tenon’s anesthetic injection, and incidence of SCH during sub-Tenon’s anesthesia has been reported to be 7%–56% 32,33. Generally, it is limited to the area of conjunctival dissection.…”

Section: What Are the Causes Of Subconjunctival Hemorrhage?mentioning

confidence: 99%

Subconjunctival hemorrhage: risk factors and potential indicators

Tarlan¹,

Kıratlı²

2013

OPTH

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Subconjunctival hemorrhage is a benign disorder that is a common cause of acute ocular redness. The major risk factors include trauma and contact lens usage in younger patients, whereas among the elderly, systemic vascular diseases such as hypertension, diabetes, and arteriosclerosis are more common. In patients in whom subconjunctival hemorrhage is recurrent or persistent, further evaluation, including workup for systemic hypertension, bleeding disorders, systemic and ocular malignancies, and drug side effects, is warranted.

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Section: What Are the Causes Of Subconjunctival Hemorrhage?mentioning

confidence: 99%

Subconjunctival hemorrhage: risk factors and potential indicators

Tarlan¹,

Kıratlı²

2013

OPTH

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“…A study on 6000 sub-Tenon’s blocks found that over 68% of patients had no discomfort at all during performance of the block and less than 1.5% reported more than mild to moderate pain 28. This was in contrast to patients having a retrobulbar block.…”

Section: Advantages Of Sub-tenon’s Anesthesiamentioning

confidence: 99%

“…Studies have shown that the incidence of minor sub-conjunctival hemorrhage is increased in patients on aspirin, clopidogrel, and warfarin, but there is no increase in major hemorrhages 28,31. There is currently no data to support the safety of sub-Tenon’s anesthesia in patients taking dabigatran (Pradaxa ® ; Boehringer Ingelheim Pharma GmbH and Co, KG, Ingelheim am Rhein, Germany), and recommendations are to withhold this drug for two to five days prior to surgery 32…”

Section: Advantages Of Sub-tenon’s Anesthesiamentioning

confidence: 99%

Sub-Tenon's anesthesia: an update

Guise¹

2012

LRA

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“…[15] The frequency of SCH during STA injections is often a consequence of the procedure and has been reported to occur in up to 56% of cases. [420] The most likely source of bleeding is the conjunctival vessels, which get injured, cut or sheared during the process of creating a conjunctival entry site for the cannula to pass into the sub-Tenon's space. Although this does not necessarily have any direct morbidity associated with it, a chemosed hemorrhagic conjunctiva not only results in an unsightly postoperative eye but can also make visualization during cataract surgery more challenging owing to pooling of ocular surface fluids.…”

Section: Discussionmentioning

confidence: 99%

Single-injection percutaneous peribulbar anesthesia with a short needle versus sub-Tenon′s anesthesia for cataract extraction

2011

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Purpose:This study compared the efficacy of single-injection percutaneous peribulbar anesthesia (PBA) with a short needle with sub-Tenon's anesthesia (STA) to produce optimal operating conditions for cataract extraction in patients with complicated cataract.Methods:Two hundred patients with complicated cataract were enrolled in this prospective, double-blinded, randomized study. Adequate akinesia was a surgical requisite for all cases included in the study because of the expected difficult surgery. The patients were divided into two equal groups to receive either peribulbar anesthesia (PBA) with a 16-mm needle or sub-Tenon's anesthesia. Surgical akinesia (as a primary end point), analgesia, incidence of complications, as well as patient and surgeon satisfaction (as secondary end points) were assessed.Results:Both techniques provided similar analgesia during the operation and similar rates of incidence of chemosis with no serious complications; while the PBA group provided higher degree of akinesia 10 minutes after injection of the local anesthetic, a lower incidence of subconjunctival hemorrhage (SCH) and higher patient and surgeon satisfaction compared to the STA group.Conclusion:We concluded that when globe akinesia is necessary during surgery, the single-injection technique for percutaneous peribulbar anesthesia with a short needle proved to be more suitable than the STA in providing akinesia for cataract surgery. Also, this PBA technique demonstrated a lower incidence of SCH and was preferred to STA by the patients and surgeon.

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Sub-Tenon Anesthesia

Abstract: The experience at Auckland Hospital provides further support for the avoidance of passing sharp needles into the orbit.

Cited by 114 publications

References 15 publications

Subconjunctival hemorrhage: risk factors and potential indicators

Subconjunctival hemorrhage: risk factors and potential indicators

Sub-Tenon's anesthesia: an update

Single-injection percutaneous peribulbar anesthesia with a short needle versus sub-Tenon′s anesthesia for cataract extraction

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