Rabbit Ear Chamberによる微細循環動態の研究法について（その2）

On in vivo observation of the behavior of microcirculation by the rabbit ear chamber technique (2)

　既報したrabbit ear chamberを用い，mi-crophotoelctric plethysmography（-m；M PPG）をさらに発展させ，微細循環における個々の血管および血流動態を種類別および部位別に誘導記録できるsegmental MPPGを考案し，種々の循環動態を記録し，それが顕微鏡直視下の所見をよく半定量的かつ連続的に誘導していることを確めた。この際，周波数が1分当りほぼ1ないし3サイクルの基本的周期変化の外に，4ないし8サイクルおよび8ないし12サイクルの周期変化が微細循環に明らかに認められ，またplasma skimmingおよび血球流の不連続現象も記録された。

　The authors developed the segmental micro-photoelectric plethysmography (-m; MPPG) which is a method for recording the behaviors of individual vessels in the microcirculation accompanied by microscopic direct observation. The segmental MPPG was taken photoelectrically from the vascular images projected on a focussing glass, and reflected various fluctuations of blood flow in the individual vessels in quantitative and continuous manners. Rhythmic fluctuations of 4-8 and 8-12 cpm were distinctly noticed beyond the basic fluctuation of 1-3 cpm in the microcirculatory blood flow, and the phenomena of plasma skimming and the discrete of blood cell stream were also noticed on the segmental MPPG.