结论：XTT能改善冠脉循环，减少心肌耗氧量，对缺血心肌具有保护作用。
Conclusion XTT has protective effects on myocardial ischemia through improving the coronary circulation, decreasing cardial oxygen consumption in dogs.
实现这个目的有多种途径，所有这些都以减少这期间的心肌耗氧量为目标。
This is achieved a variety of ways, all of which are aimed toward reducing the myocardial oxygen requirement of the heart during that period.
结论：术前心理干预可减少脊髓损伤后行脊髓减压患者围手术期心肌耗氧量。
CONCLUSION: Preoperative psychological intervention can reduce the myocardial oxygen consumption in the perioperative patients after spinal cord injury under decompression of spinal cord.
小剂量时可扩张静脉，使静脉回流减少，左室舒末压下降，使心脏前负荷降低，降低心肌耗氧量。
If minor doses are used, they can expand veins, lessen the vein reflux, cut down diastolic pressure or left ventricular end and cut down the load of the heart, and reduce the oxygen consumption.
小剂量时可扩张静脉，使静脉回流减少，左室舒末压下降，使心脏前负荷降低，降低心肌耗氧量。
If minor doses are used, they can expand veins, lessen the vein reflux, cut down diastolic pressure or left ventricular end and cut down the load of the heart, and reduce the oxygen consumption.
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