Randomized Controlled Trial

Influence of thoracic epidural analgesia on cardiovascular autonomic control after thoracic surgery.

Br J Anaesth. 2003 Oct 1; 91 (4): 525-31.
Randomized Controlled Trial

Effects of spinal or general anesthesia on F₂-isoprostanes and isofurans during ischemia/reperfusion of the leg in patients undergoing knee replacement surgery.

Free Radic. Biol. Med. 2011 May 1;50(9):1171-6.
Comparative Study

Correlation properties and complexity of perioperative RR-interval dynamics in coronary artery bypass surgery patients.

Anesthesiology. 2000 Jul 1; 93 (1): 69-80.