G. Rooke and J. Reves, Anesthesiology and Geriatric Medicine, Anesthesiology, vol.96, issue.1, pp.2-4, 2002.
DOI : 10.1097/00000542-200201000-00006

B. Ferrell and M. Shaffner, Pharmacoeconomics and medical outcomes in pain management, Semin Anesth, vol.16, pp.152-161, 1997.

R. Karani and D. Meier, Systemic Pharmacologic Postoperative Pain Management in the Geriatric Orthopaedic Patient, Clinical Orthopaedics and Related Research, vol.425, pp.26-34, 2004.
DOI : 10.1097/01.blo.0000132403.53010.6f

W. Edward and R. Breed, The treatment of acute postoperative pain in postanesthesia care unit, Anesthesiol Clin, vol.8, pp.235-65, 1990.

S. Dahmani, H. Dupont, J. Mantz, and J. Desmonts, Predictive factors of early morphine requirements in the post-anaesthesia care unit (PACU), British Journal of Anaesthesia, vol.87, issue.3, pp.385-394, 2001.
DOI : 10.1093/bja/87.3.385

F. Aubrun, S. Monsel, O. Langeron, P. Coriat, and B. Riou, Postoperative titration of intravenous morphine, European Journal of Anaesthesiology, vol.18, issue.3, pp.159-65, 2001.
DOI : 10.1097/00003643-200103000-00004

F. Aubrun, S. Monsel, O. Langeron, P. Coriat, and B. Riou, Postoperative Titration of Intravenous Morphine in the Elderly Patient, Anesthesiology, vol.96, issue.1, pp.17-23, 2002.
DOI : 10.1097/00000542-200201000-00009

X. Paqueron, A. Lumbroso, P. Mergoni, F. Aubrun, O. Langeron et al., Is morphine-induced sedation synonymous with analgesia during intravenous morphine titration?, British Journal of Anaesthesia, vol.89, issue.5, pp.697-701, 2002.
DOI : 10.1093/bja/89.5.697
URL : http://bja.oxfordjournals.org/cgi/content/short/89/5/697

L. Gagliese, M. Jakson, P. Ritvo, A. Wowk, and J. Katz, Age Is Not an Impediment to Effective Use of Patient-controlled Analgesia by Surgical Patients, Anesthesiology, vol.93, issue.3, pp.601-610, 2000.
DOI : 10.1097/00000542-200009000-00007

P. Macintyre and D. Jarvis, Age is the best predictor of postoperative morphine requirements, Pain, vol.64, issue.2, pp.357-364, 1995.
DOI : 10.1016/0304-3959(95)00128-X

H. Keita, N. Geachan, S. Dahmani, E. Couderc, A. C. Quazza et al., Comparison between patient-controlled analgesia and subcutaneous morphine in elderly patients after total hip replacement, British Journal of Anaesthesia, vol.90, issue.1, pp.53-60, 2003.
DOI : 10.1093/bja/aeg019

L. Pico, S. Hernot, N. Zlotine, I. Samii, K. Fletcher et al., Peroperative titration of morphine improves immediate postoperative analgesia after total hip arthroplasty, Canadian Journal of Anesthesia/Journal canadien d'anesth??sie, vol.40, issue.4, pp.309-323, 2000.
DOI : 10.1007/BF03020943

J. Owen, D. Sitar, L. Berger, L. Brwnell, P. Duke et al., Age-related morphine kinetics, Clinical Pharmacology and Therapeutics, vol.34, issue.3, pp.364-372, 1983.
DOI : 10.1038/clpt.1983.180

J. Burns, N. Hodsman, T. Mclintock, G. Gillies, and G. Kenny, The influence of patient characteristics on the requirements for postoperative analgesia., Anaesthesia, vol.2, issue.1, pp.2-6, 1989.
DOI : 10.1016/S0140-6736(80)91264-7

R. Kaiko, Age and morphine analgesia in cancer patients with postoperative pain, Clinical Pharmacology and Therapeutics, vol.28, issue.6, pp.823-829, 1980.
DOI : 10.1038/clpt.1980.241

R. Kaiko, S. Wallenstein, A. Rogers, P. Grabinski, and R. Houde, Narcotics in the Elderly, Medical Clinics of North America, vol.66, issue.5, pp.1079-89, 1982.
DOI : 10.1016/S0025-7125(16)31383-9

J. Belleville, W. Forrest, E. Miller, and B. Brown, Influence of Age on Pain Relief From Analgesics, JAMA, vol.217, issue.13, pp.1835-1876, 1971.
DOI : 10.1001/jama.1971.03190130039008

S. Muravchick and . Editor, Miller RD Anesthesia for the elderly, Anesthesia. 4, pp.2143-56, 1994.

R. Osborne, J. S. Grbenik, K. Trew, and D. , The pharmacokinetics of morphine and morphine glucuronides in kidney failure, Clinical Pharmacology and Therapeutics, vol.54, issue.2, pp.158-67, 1993.
DOI : 10.1038/clpt.1993.127

C. Chauvin, P. Sandouk, J. Scherrmann, R. Farinotti, and P. Strumza, Morphine Pharmacokinetics in Renal Failure, Anesthesiology, vol.66, issue.3, pp.327-358, 1987.
DOI : 10.1097/00000542-198703000-00011

C. Kalkman, K. Visser, J. Moen, G. Bonsel, and D. Grobbee, Preoperative prediction of severe postoperative pain, Pain, vol.105, issue.3, pp.415-438, 2003.
DOI : 10.1016/S0304-3959(03)00252-5

T. Bisgaard, B. Klarskov, J. Rosenberg, and H. Kehlet, Characteristics and prediction of early pain after laparoscopic cholecystectomy, Pain, vol.90, issue.3, pp.261-270, 2001.
DOI : 10.1016/S0304-3959(00)00406-1

L. Gagliese and J. Katz, Age differences in postoperative pain are scale dependent: a comparison of measures of pain intensity and quality in younger and older surgical patients, Pain, vol.103, issue.1, pp.11-20, 2003.
DOI : 10.1016/S0304-3959(02)00327-5

L. Gagliese, N. Weizblit, W. Ellis, and V. Chan, The measurement of postoperative pain: A comparison of intensity scales in younger and older surgical patients, Pain, vol.117, issue.3, pp.412-432, 2005.
DOI : 10.1016/j.pain.2005.07.004

F. Aubrun, N. Salvi, P. Coriat, and B. Riou, Sex- and Age-related Differences in Morphine Requirements for Postoperative Pain Relief, Anesthesiology, vol.103, issue.1, pp.156-60, 2005.
DOI : 10.1097/00000542-200507000-00023