六氟化硫从塑料注射器中的逸出速率。
The rate of sulfur hexafluoride escape from a plastic syringe.
作者信息
Humayun M S, Yeo J H, Koski W S, Michels R G
机构信息
Wilmer Ophthalmological Institute, Johns Hopkins Hospital, Baltimore, MD 21205.
出版信息
Arch Ophthalmol. 1989 Jun;107(6):853-4. doi: 10.1001/archopht.1989.01070010875033.
Sulfur hexafluoride (SF6) gas is widely used for internal tamponade during retinal reattachment surgery and is commonly injected into the eye from a 10-mL plastic syringe. The rate of diffusion of SF6 out of a plastic syringe has not bee studied. We measured the percentage of SF6 gas in a 10-mL plastic syringe by gas chromatography, confirmed by infrared spectrometry. Measurements were obtained immediately after aspiration, and at 30 s and 10, 15, 60, 90, and 120 minutes, and 18 hours. A marked decrease in SF6 concentration, from 97% at 30 s to 76% at 60 minutes and 2% at 18 hours, was noted. The results were highly reproducible. Sulfur hexafluoride gas should be injected into the patient's eye as soon as possible after aspiration from the tank to ensure accurate concentrations.
六氟化硫（SF6）气体在视网膜复位手术中广泛用于眼内填充，通常通过10毫升塑料注射器注入眼内。六氟化硫从塑料注射器中的扩散速率尚未得到研究。我们通过气相色谱法测量了10毫升塑料注射器中六氟化硫气体的百分比，并通过红外光谱法进行了确认。在抽吸后立即以及在30秒、10、15、60、90和120分钟以及18小时时进行测量。注意到六氟化硫浓度显著下降，从30秒时的97%降至60分钟时的76%以及18小时时的2%。结果具有高度可重复性。从储存罐抽吸后应尽快将六氟化硫气体注入患者眼中，以确保准确的浓度。
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