[The influence of intraoperative fluid therapy on the postoperative outcome in "fast track" colon surgery]

[Haemodynamic monitoring in the perioperative phase. Available systems, practical application and clinical data]

A regular hydration status and compensated vascular filling are targets of perioperative fluid and volume management and, in parallel, represent precautions for sufficient stroke volume and cardiac output to maintain tissue oxygenation. The physiological and pathophysiological effects of fluid and volume replacement mainly depend on the pharmacological properties of the solutions used, the magnitude of the applied volume as well as the timing of volume replacement during surgery. In the perioperative setting surgical stress induces physiological and hormonal adaptations of the body, which in conjunction with an increased permeability of the vascular endothelial layer influence fluid and volume management. The target of haemodynamic monitoring in the operation room is to collect data on haemodynamics and global oxygen transport, which enable the anaesthetist to estimate the volume status of the vascular system. Particularly in high risk patients this may improve fluid and volume therapy with respect to maintaining cardiac output. A goal-directed volume management aiming at preventing hypovolaemia may improve the outcome after surgery. The objective of this article is to review the monitoring devices that are currently used to assess haemodynamics and filling status in the perioperative setting. Methods and principles for measuring haemodynamic variables, the measured and calculated parameters as well as clinical benefits and shortcomings of each device are described. Furthermore, the results for monitoring devices from clinical studies of goal-directed fluid and volume therapy which have been published will be discussed.

[Fast track in vascular surgery]

Vascular comorbidities are common in vascular surgery, being associated with perioperative complications. Since it was demonstrated that the postoperative course could be optimized by introduction of the fast track concept in general surgery, application to vascular surgery may also be of benefit. The fast track concept was introduced in our institution on May 1st 2008 with special adjustments for vascular surgery. The authors describe the development and implementation of a clinical pathway, which proved to be of value in vascular surgery.

Elektive Kolonresektionen in Deutschland

BACKGROUND

Fast-track rehabilitation after elective colon resection is an interdisciplinary multimodal procedure, which combines surgical and anesthesiological aspects. This leads to an improved and accelerated recovery and avoids perioperative complications. This survey focuses on the extent and use of such concepts in Germany.

METHODS

In January 2006, a questionnaire was sent to 1270 anesthesiology departments in Germany in which they were asked to describe the standard anesthesia procedures based on a conventional sigmoid resection.

RESULTS

The response rate was 385 out of 1270 (30.3%). Preoperative fasting of solid food 12 h before the operation was practiced in 52% and for 6 h in 44% of the clinics. For fluid intake the fasting time was 6 h in 47% and 2 h in 41%. Prophylactic measures for postoperative nausea and vomiting (PONV) were administered in 33% of clinics. Propofol (68%) was the leading narcotic, fentanyl (56%) and sufentanil (48%) were the most commonly used intraoperative analgesics and 75% of clinics used epidural analgesia.

CONCLUSION

In Germany the anesthesiological treatment after elective colon surgery adheres broadly to the evidence-based recommendations for fast-track concepts.

Fast-Track-Rehabilitation am Beispiel der Kolonchirurgie

Fast-track rehabilitation refers to an interdisciplinary multimodal procedure to improve and accelerate recovery and avoid perioperative complications. The concept aims at reducing morbidity and discharging patients faster. It includes preoperative patient information, atraumatic surgical technique, stress reduction, pain therapy mostly via regional anesthetic techniques (frequently, thoracic epidural anesthesia), optimized fluid and temperature management, early enteral feeding, prophylaxis of gastrointestinal atony and postoperative nausea and vomiting, fast postoperative patient mobilization, and earlier hospital discharge. Fast-track protocols exist for all kind of surgical procedures but are best established for colon surgery.