[The advantages of laser assist in parenchyma-sparing pulmonary resection].
1992
: The advantages of laser irradiation were investigated retrospectively, using a total of 89 parenchyma-sparing pulmonary resection (PSPR) for localized lung lesions which included 42 conventional wedge resection (CWR), 8 PSPR using electrocoagulator (PE) and 39 PSPR using CO2 laser or Nd:YAG laser (PCYL). The major axes of the lesions in PNYL (25.4 +/- 10 mm) were significantly (p = 0.0387) longer than that in CWR (20.3 +/- 11.3 mm). The amount of bleeding during operation was similar in three groups. The mean value of the amount of postoperative exudation from the thoracic drains in PCYL (615 ml) was only 60 ml more than that in CWR. Bloody sputum was observed for 4.8 days in PCYL and 5.0 days in CWR, whereas 7.1 days in PE. Air leak was observed 33.3% in PCYL, 37.5% in PE, whereas 22.5% in CWR, that continued for 1.7 days (mean value) in PCYL, 1.6 days in PE and 2.0 days in CWR. Decrease (differences between preoperative and postoperative lung functions/volume of the lesions) in FVC and FEV1.0 in PCYL (mean values = 221, 158) and PE (174, 135) were less than that in CWR (339, 204). Laser assist in PSPR revealed advantages in hemostasis comparing with PE, and in parenchyma-sparing comparing with CWR. And no clear difference between PCYL and CWR in bleeding during operation, the amount of postoperative exudation and postoperative air leak. CO2 laser is reported that has higher potential in vaporization or cutting but lower ability in hemostasis comparing with Nd:YAG laser, so authors would express that Nd:YAG laser assist is most safe and effective in parenchyma-sparing lung resection.
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