• Thomas Kratz, Frank Dette, Jan Schmitt, Thomas Wiesmann, Hinnerk Wulf, and Martin Zoremba.
• Department of Anesthesia and Intensive Care Medicine, University Hospital, Philipps-University of Marburg, Marburg, Germany.
• Technol Health Care. 2015 Jan 1; 23 (3): 313-22.

BackgroundAdequate pain management is essential for preventing hemodynamic instability which can affect the perfusion of vital organs during the perioperative period, particularly in geriatric patients. For hip arthroplasty, peripheral nerve block is frequently used, limiting the adverse effects of opioid and non-opioid analgesics.ObjectiveThe aim was to survey the impact of a supplementary single shot femoral nerve block (FNB) on hemodynamic stability and pain level.MethodsAfter registration at German Clinical Trial Register (DRKS-ID): DRKS00000752. and Ethics Committee approval (University Hospital of Marburg), 80 patients who underwent elective hip surgery were included. Half of them were randomly assigned to receive a FNB followed by general anesthesia; a control group received only general anesthesia as standard procedure (STD). Blood pressure and heart rate were measured and recorded every five minutes during surgery and stay at the postanesthesia care unit (PACU).ResultsFifty-two patients were included for statistical analysis. The FNB group had significantly lower systolic blood pressures during and after surgery and lower diastolic blood pressure postoperatively, heart rate, as well as opioid and non-steroidal anti-inflammatory consumption.ConclusionsFemoral nerve block improved perioperative hemodynamic stability mostly likely attributable to an overall reduced sympathico adrenergic tone.

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