Dobrin P B
Surgery. 1982 Jun;91(6):671-9.
Balloon embolectomy catheters were studied in 3 mm dog carotid arteries to compare liquid-filled balloons with gas-filled balloons. Balloons were filled with syringes containing 1 cc fluid (1F), 1 cc gas (1G), and 50 cc gas (50G). Results showed that lateral wall pressures (LWPs) were precisely controlled with fluid-filled balloons but were poorly controlled with gas-filled balloons because gas-filled balloons exhibited spontaneous changes in diameter and LWP. Also, when Edwards 4F balloons were filled in clinically satisfactory criteria, out of direct vision, the following LWPs (in millimeters of mercury) were obtained: 54.4 +/- 8 with 1F, 95.2 +/- 13.8 with 1G, and 216 +/- 19.8 with 50G following balloon inflation; 28.1 +/- 5.7 with 1F and 34.2 +/- 7.1 with 1G following balloon deflation. Balloons filled with 50G collapsed completely during balloon deflation. Statistically lower (P less than 0.05) LWPs were obtained with fluid-filled balloons versus gas-filled balloons and with deflation versus inflation. Gas-filled balloons produced slightly lower shear forces than did fluid-filled balloons (P less than 0.05), but only through regions of stenosis and only at low LWPs-namely 25 and 75 mm Hg LWP. Gas-filled balloons produced no reduction in shear force at higher LWPs. It was concluded that fluid-filled balloons are preferable to gas-filled balloons for use in the operating room because fluid-filled balloons provide lower LWPs greater surgeon control, and only slightly increased shear forces. With both fluid-filled and gas-filled balloons, lower LWPs can be achieved by distending balloons to apparently satisfactory levels and then deflating them to slightly lower levels.
在3毫米的犬颈动脉中研究了球囊取栓导管，以比较充液球囊和充气球囊。用装有1毫升液体（1F）、1毫升气体（1G）和50毫升气体（50G）的注射器对球囊进行填充。结果显示，充液球囊能精确控制侧壁压力（LWP），而充气球囊对LWP的控制较差，因为充气球囊的直径和LWP会自发变化。此外，当按照临床满意标准在直视外对爱德华兹4F球囊进行填充时，球囊充气后获得以下LWP（单位为毫米汞柱）：1F为54.4±8，1G为95.2±13.8，50G为216±19.8；球囊放气后，1F为28.1±5.7，1G为34.2±7.1。填充50G的球囊在放气过程中完全塌陷。与充气球囊相比，充液球囊以及放气时的LWP在统计学上更低（P小于0.05）。充气球囊产生的剪切力略低于充液球囊（P小于0.05），但仅在狭窄区域且仅在低LWP时（即LWP为25和75毫米汞柱时）如此。在较高LWP时，充气球囊不会使剪切力降低。得出的结论是，在手术室中使用时，充液球囊比充气球囊更可取，因为充液球囊能提供更低的LWP、给予外科医生更好的控制，且剪切力仅略有增加。对于充液球囊和充气球囊，通过将球囊扩张到明显满意的水平然后再将其放气到略低的水平，均可实现更低的LWP。
