Klinische Monatsblätter für Augenheilkunde
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Klin Monbl Augenheilkd · Sep 2012
Randomized Controlled Trial[Significant improvement in compliance with the face-down position after vitrectomy and gas tamponade].
The positioning of a patient in a "prone position" ("face down position", fdp) after pars plana vitrectomy with gas tamponade has been discussed controversially since the beginning of macular surgery. The "prone positioning" is almost standard although the duration varies. In most of the study designs for macular surgery "face-down positioning" is advised. However it is not clearly described how the "prone position" was achieved. In most of the studies it is not shown if the patients had suitable aids and how long and how efficiently they used them. Experience while practising this shows that the patient's compliance is a great challenge. Patients are mostly unable to comply, which could result in refusal. ⋯ By placing supports at the disposal of the patients, it is possible to improve significantly the compliance after surgery. To succeed in using the prone position also at home it is necessary to supply the patient with a support which is comfortable, cheap and easy to handle.
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Klin Monbl Augenheilkd · Mar 2002
Randomized Controlled Trial Comparative Study Clinical Trial[Measurement of intraocular pressure using the Tono-Pen in comparison with Goldmann applanation tonometry - a clinical study in 100 eyes].
In clinical practice ophthalmologists often need a tonometer which is independent of a slit lamp. Such a hand-held device is the Tono-Pen. We compared the precision of two equal Tono-Pens with Goldmann applanation tonometry. ⋯ Measurement of IOP with the Tono-Pen is comparable to Goldmann applanation tonometry if an average of 3 measurements is used. The difference between two equal Tono-Pens indicates the need for improvement of the quality check during production.
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Klin Monbl Augenheilkd · Jul 2001
Randomized Controlled Trial Clinical Trial[Biochemical stress monitoring during cataract surgery; phenylephrine 10% shows no changes in serum-catecholamines in comparison with phenylephrine 5%].
There is a controversy about the concentration of topical phenylephrine recommended for diagnostic or therapeutic mydriasis. Phenylephrine 10% leads to a faster and more pronounced mydriasis but cardio-vascular side-effects like hypertension and arrhythmia have been reported. A maximal pupillary dilatation is a prerequisite for successful cataract surgery. The aim of this study was to evaluate the risk-benefit ratio of phenylephrine 10% in comparison to 5% in the daily practice of the cataract-surgery unit in our clinic by clinical assessment and monitoring of biochemical stress parameters. ⋯ These results demonstrate that a controlled application of phenylephrine 10%--under observation of contraindications--yields no increased risk for the occurrence of cardio-vascular side-effects in comparison with phenylephrine 5%. Therefore, we recommend the use of phenylephrine 10% in the described dosage as routine medication for cataract surgery.
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Klin Monbl Augenheilkd · Nov 1999
Randomized Controlled Trial Comparative Study Clinical Trial[Perioperative circulatory side effects of topical 5% phenylephrine for mydriasis].
To study the systemic effects of topically applied 5% phenylephrine. To investigate intraoperative injection of epinephrine in the anterior chamber as an alternative. ⋯ In normotonic or medically treated arterial hypertensive patients, preoperative mydriasis using 5% phenylephrine is safe--proceeding the way described above. Compression of the lacrimal drainage system can be performed by the patients effectively. Intraoperative intracameral epinephrine does not replace preoperative phenylephrine.
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Klin Monbl Augenheilkd · May 1996
Randomized Controlled Trial Clinical Trial[0.15 mg clonidine as oral premedication in retrobulbar anesthesia].
In the present clinical study, oral premedication of 0.15 mg clonidine has been explored with view to anxiolytic effects and physiological stress parameters. ⋯ In our opinion, oral clonidine (0.15 mg) is useful for premedication of surgery under RBA.