Roethlisberger-Holm K
Department of Medicine and Surgery, Swedish University of Agricultural Sciences, Uppsala.
Zentralbl Veterinarmed A. 1993 Sep;40(7):516-24. doi: 10.1111/j.1439-0442.1993.tb00660.x.
Recording of intratracheal pressure during exercise as a method for evaluating upper airway obstruction in the horse has previously been carried out on the treadmill. In the present study the method was applied to normal horses, outdoors under field conditions, to assess its usefulness for analysis of respiratory problems mainly occurring under racing conditions. The horses examined performed a standardized exercise test during which the intratracheal pressure was recorded with a tape recorder receiving amplified signals from a transducer connected to a percutaneously inserted intratracheal catheter. The exercise test was carried out under three different conditions: with (1) sulky or (2) rider outdoors and (3) on treadmill indoors. The latter test was included for comparison between field conditions and treadmill exercise. From the recordings obtained, several respiratory variables were calculated. The pressure graphs essentially resembled those obtained previously in tests performed exclusively on the treadmill. There were, however, some differences between the reactions of the horses to the three tests, which seem to necessitate a control material studied under comparable conditions. The technique is simple and the equipment for the outdoor tests is comparatively inexpensive, qualities which seem to make these tests suitable for studies of upper airway obstructions in clinical routine. Further, the outdoor tests may permit investigations of disorders of the respiratory tract that occur mainly under racing conditions.
此前曾在跑步机上对运动中的马进行气管内压力记录，作为评估其上呼吸道阻塞情况的一种方法。在本研究中，该方法应用于正常马匹，在野外条件下进行，以评估其对分析主要在比赛条件下出现的呼吸问题的有用性。接受检查的马匹进行了一项标准化运动试验，在此期间，通过磁带录音机记录气管内压力，该录音机接收来自与经皮插入气管导管相连的传感器的放大信号。运动试验在三种不同条件下进行：（1）在户外有双轮轻便马车或（2）有骑手，以及（3）在室内跑步机上。纳入后者的试验是为了比较野外条件和跑步机运动情况。根据所获得的记录，计算了几个呼吸变量。压力图与先前仅在跑步机上进行的试验中获得的压力图基本相似。然而，马匹对这三种试验的反应存在一些差异，这似乎需要在可比条件下研究对照材料。该技术简单，户外试验设备相对便宜，这些特性似乎使这些试验适用于临床常规中上呼吸道阻塞的研究。此外，户外试验可能允许对主要在比赛条件下出现的呼吸道疾病进行调查。
