Waterman A E, Hashim M A
Department of Veterinary Surgery, Langford, Bristol.
Vet Rec. 1991 Sep 21;129(12):261-4. doi: 10.1136/vr.129.12.261.
Fifty dogs were investigated in order to correlate the length and position of the lower oesophageal sphincter (LOS) with external measurements. Various external measurements were taken while the dogs were anaesthetised and positioned in lateral recumbency. An oesophageal tube was then introduced into the oesophagus and thoracic radiographs were taken. The 'real internal length of the oesophagus' was calculated as the length from the lower jaw incisor tooth to the position of the oesophageal tube at the costal border of the diaphragm. A highly significant linear correlation was found between this internal length and the external length from lower jaw incisor tooth to the anterior border of the head of the 10th rib. Using oesophageal manometry, the length and position of the LOS was also studied in 25 clinically normal bitches. The mean length of the LOS was found to be 4.6 +/- 0.92 cm. The position of the LOS was a mean of 4.4 +/- 1.69 cm cranial to the costal border of the diaphragm. The findings of this study indicate that the external measurements can be used to position catheters for accurate oesophageal manometry in the dog.
为了将食管下括约肌（LOS）的长度和位置与外部测量值相关联，对50只狗进行了研究。在狗麻醉并侧卧时进行了各种外部测量。然后将一根食管管插入食管并拍摄胸部X光片。“食管的实际内部长度”计算为从下颌切牙到食管管在横膈膜肋缘处位置的长度。发现该内部长度与从下颌切牙到第10肋头部前缘的外部长度之间存在高度显著的线性相关性。使用食管测压法，还对25只临床正常的母犬的LOS长度和位置进行了研究。发现LOS的平均长度为4.6±0.92厘米。LOS的位置平均位于横膈膜肋缘上方4.4±1.69厘米处。本研究结果表明，外部测量值可用于在狗身上准确放置导管以进行食管测压。
