Die Beeinflussung des Kältezitterns durch lokale Temperaturänderung im Wirbelkanal

✍ Scribed by Werner Rautenberg; Eckhart Simon

• Publisher: Springer
• Year: 1964
• Tongue: English
• Weight: 831 KB
• Volume: 281
• Category: Article
• ISSN: 0031-6768
• DOI: 10.1007/bf00362355

✦ Synopsis

1. Dogs, lightly anesthetized with Pernocton, were exposed to low environmental temperatures, or their core temperature was lowered by means of a thermode placed into the oesophagus. When shivering and an increase in oxygen consumption had been evoked, the temperature of the vertebral canal was changed by means of ~ thermode placed into the peridural space. Shivering was increased by cooling, and was decreased by warming the vertebral canal.

2. The additional increase in oxygen consumption produced by cooling the vertebral canal under the conditions of a low environmental temperature or a low core temperature was greater than the increase in oxygen consumption produced by cooling the vertebral eanal under the conditions of elevated skin and core temperatures (4,3 ml. min -1. kg -1 and 2,9 ml. min 2. kg-~ instead of 1,1 ml. min -1 • kg-l).

3. The decrease in oxygen cõnsumption caused by warming the vertebral cana] was 2,6 tal" min-*, kg-* in dogs exposed to low ambient temperatures, and 1,8 ml • min -1 • kg -1 in animals with ]ow core temperatures.

4. The results show that heat production can be influenced by cooling as weil as by warming the thermosensitive structures located in the vertebral canal.