Dripps RD, Vandam LD. Long-term follow-up of patients who received 10.098 spinal anesthetics: failure to discover major neurological sequelae. JAMA. 1954;156:1486-1491.

Vandam LD, Dripps RD. Exacerbation of pre-existing neurologic disease after spinal anesthesia. N Engl J Med. 1956;255:843-849.

Phillips OC, Ebner H, Nelson AT. Neurologic complications following spinal anesthesia with lidocaine: a prospective review of 10.440 cases. Anesthesiology. 1969;30:284-289.

Auroy Y, Narchi P, Messiah A. Serious complications related to regional anesthesia. Anesthesiology. 1997;87:479-486.

Dahegren N, Törnebrandt K. Neurological complications after anaesthesia: A follow-up of 18000 spinal and epidural anaesthetics performed over three years. Acta Anaesthesiol Scand. 1995;39:872-880.

Gentili F, Hudson AR, Hunter D. Nerve injection injury with local anesthetic agents: A light and electron microscopic, fluorescent microscopic, and horseradish peroxidase study. Neurosurgery. 1980;6:263-272.

Bert AA, Laasberg LH. Aseptic meningitis following spinal anesthesia a complication of the past?. Anesthesiology. 1985;62:674-677.

Wang BC, Spielholz NI, Hillman DE. Subarachnoid sodium bisulfite (the antioxidant in nesacaine) causes chronic neurological deficit. Anesthesiology. 1982;57:A194.

Rigler ML, Drasner K, Krejcie TC. Cauda equina syndrome after continuous spinal anesthesia. Anesth Analg. 1991;72:275-281.

Myers RR., Sommer C. Methodology for spinal neurotoxicity studies. Reg Anesth. 1993;18:439-447.

Ready LB, Plumer MH, Haschke RH. Neurotoxicity of intrathecal local anesthetics in rabbits. Anesthesiology. 1985;63:364-370.

Horlocker TT, McGregor DG, Matsushige DK. A retrospective review of 4767 consecutive spinal anesthetics: central nervous system complications. Anesth Analg. 1997;84:578-584.

Herman N. Neurologic complication of regional anesthesia. Semin Anesth Perioper Med Pain. 1998;17:64-72.

Reynolds F. Damage to the conus medullaris following spinal anaesthesia. Anaesthesia. 2001;56:235-247.

Dripps RD. A comparison of the malleable needle and catheter techniques for continuous spinal anesthesia. NY State J Med. 1950;50:1595-1599.

Puolakka R, Haasio J, Pitkänen M. Technical aspects and postoperative sequelae of spinal and epidural anesthesia: a prospective study of 3.230 orthopedic patients. Reg Anesth Pain Med. 2000;25:488-497.

Neal MJ. Update on postdural puncture headache. Tech Reg Anesth Pain Manage. 1998;2:202-210.

Horlocker TT. Complications of spinal and epidural anesthesia. Anesthesiol Clin North Am. 2000;18:461-485.

Galinski S, Choi PT-L, Lucas S. The quality of PDPH literature in obstetrical anesthesia: results from an obstetrical PDPH bibliographic database. Anesthesiology. 1999;91:A1138.

Neves JFNP, Monteiro GA, Almeida JR. Raquianestesia para cesariana: avaliação da cefaléia com agulhas de Quincke e Whitacre 25G e 27G. Rev Bras Anestesiol. 1999;49:173-175.

Villar GCP, Rosa C, Cappelli EL. Incidência de cefaléia pós-raquianestesia em pacientes obstétricas com uso de agulha de Whitacre calibre 27G: Experiencia com 4570 casos. Rev Bras Anestesiol. 1999;49:110-112.

Imbelloni LE, Sobral MGC, Carneiro ANG. Cefaléia pós-raqui- anestesia e o desenho das agulhas: Experiência com 5050 casos. Rev Bras Anestesiol. 2001;51:43-52.

Halpern S, Preston R. Postdural puncture headache and spinal needle design: Metaanalyses. Anesthesiology. 1994;81:1376-1383.

Haffalvi BI. The dynamics of postspinal headache. Headache. 1977;17:64-67.

Imbelloni LE, Sobral MGC, Carneiro ANG. Influência do calibre da agulha, da via de inserção da agulha e do número de tentativas de punção na cefaléia pós-raquianestesia: Estudo prospectivo. Rev Bras Anestesiol. 1995;45:377-382.

Pedrosa GC, Jardim JL, Palmeira MA. Tampão sangüíneo peridural e alta hospitalar precoce: análise de 60 pacientes portadores de cefaléia pós-raquianestesia. Rev Bras Anestesiol. 1996;46:8-12.

Wedel DJ, Horlocker TT. Risks of regional anesthesia: infectious, septic. Reg Anesth. 1996;21:57-61.

Kalichmam MW, Calcutt NA. Local anesthetic induced conduction block and nerve fiber injury in streptozotocin-diabetic rats. Anesthesiology. 1992;77:941-947.

Kane RE. Neurologic deficits following epidural or spinal anesthesia. Anesth Analg. 1981;60:150-161.

Tryba M. Epidural regional anesthesia and low molecular heparin: pro (German). Anästh Intensivmed Notfallmed Schmerzther. 1993;28:179-181.

Horlocker TT, Wedel DJ. Neuraxial block and low molecular weight heparin: balancing perioperative analgesia and thrombopro- phylaxis. Reg Anesth Pain Med. 1998;23:164-177.

Vandermeulen EP, Van Aken H, Vermylen J. Anticoagulants and spinal-epidural anesthesia. Anesth Analg. 1994;79:1165-1177.

Horlocker TT, Wedel DJ. Neurologic complications of spinal and epidural anesthesia. Reg Anesth Pain Med. 2000;25:83-98.

Rao TLK, El-Etr AA. Anticoagulation following placement of epidural and subarachnoid catheters: an evaluation of neurologic sequelae. Anesthesiology. 1981;55:618-620.

Ruff RL, Dougherty JH. Complications of lumbar puncture followed by anticoagulation. Stroke. 1981;12:879-881.

Schwander D, Bachmann F. Heparin and spinal or epidural anesthesia: decision analysis (review). Ann Fr Anesth Reanim. 1991;10:284-296.

Liu SS, Mulroy MF. Neuroaxial anesthesia and analgesia in presence of standard heparin. Reg Anesth Pain Med. 1998;23:157-163.

Schroeder DR. Statistic: detecting a rare adverse drug reaction using spontaneous reports. Reg Anesth Pain Med. 1998;23:183-189.

Horlocker TT, Wedel DJ, Offord KP. Does preoperative antiplatelet therapy increase the risk of hemorrhagic complications associated with regional anesthesia?. Anesth Analg. 1990;70:631-634.

CLASP: a randomized trial of low-dose aspirin for the prevention and treatment of pre-eclampsia among 9364 pregnant women. Lancet. 1994;343:619-629.

Horlocker TT, Wedel DJ, Schroeder DR. Preoperative antiplatelet therapy does not increase the risk of spinal hematoma associated with regional anesthesia. Anesth Analg. 1995;80:303-309.

Urmey WF, Rowlingson JC. Do antiplatelet agents contribute to the development of perioperative spinal hematoma?. Reg Anesth Pain Med. 1998;23:146-151.

Goldman WW, Sanford JP. An "Epidemic" of chemical meningitis. Am J Med. 1960;29:94-101.

Harding SA, Collis RE, Morgan BM. Meningitis after combined spinal-extradural anaesthesia in obstetrics. Br J Anaesth. 1994;73:545-547.

Rendell C. Chemical meningitis due to syringes stored in lysol. Anaesthesia. 1954;9:281-285.

Phillips OC. Aseptic meningitis following spinal anesthesia. Anesth Analg. 1970;49:867-871.

Gorce P, Varlet C, Quaknine B. Méningites après anesthésie locorégionale rachidienne. Ann Fr Anesth Réanim. 2000;19:375-381.

Schneeberger PM, Janssen M, Voss A. Alpha hemolytic streptococci: a major pathogen of iatrogenic meningitis following lumbar puncture. Case reports and a review of the literature. Infection. 1996;24:29-33.

Greene NM. Neurological sequelae of spinal anesthesia. Anesthesiology. 1961;22:682-689.

Martelete M. Sequelas neurológicas de anestesias peridurais: Relato de 4 casos. Rev Bras Anestesiol. 1981;31:245-250.

Jaradeh S. Cauda equina syndrome: a neurologist’s perspective. Reg Anesth. 1993;18:473-480.

Sourasky M, Leeds MD. Overdose in spinal analgesia. Br Med J. 1926;18:524.

Ferguson FR, Watkins KH. Paralysis of the bladder and associated neurological sequelae of spinal anaesthesia (cauda equina syndrome). Br J Surg. 1938;25:735-52.

Nicholson MJ, Eversole UH. Neurologic complications of spinal anesthesia. J Am Med Ass. 1946:132.

Schell RM, Brauer FS, Cole DJ. Persistent sacral nerve root deficits after continuous spinal anaesthesia. Can J Anaesth. 1991;38:908-911.

Rigler ML, Drasner K. Distribution of catheter-injected local anesthetic in a model of the subarachnoid space. Anesthesiology. 1991;75:684-692.

Lambert DH, Hurley RJ. Cauda equina syndrome and continuous spinal anesthesia. Anesth Analg. 1991;72:817-819.

Vianna PTG, Vane LA, Yong LC. Alterações morfológicas da medula espinhal em cães submetidos à injeção hiperbárica de tetracaína a 1,2%, lidocaína a 5% e glicose a 10%. Rev Bras Anestesiol. 1985;35(^sSuppl5):S1-S6.

Ganem EM, Vianna PTG, Marques M. Neurotoxicity of subarachnoid hyperbaric bupivacaine in dogs. Reg Anesth. 1996;21:234-238.

Cheng AC. Intended epidural anesthesia as possible cause of cauda equina syndrome. Anesth Analg. 1994;78:157-159.

Drasner K, Rigler ML, Sessler DI. Cauda equina syndrome following intended epidural anesthesia. Anesthesiology. 1992;77:582-585.

Lee DS, Bui T, Ferrarese J. Cauda equina syndrome after incidental total spinal anesthesia with 2% lidocaine. J Clin Anesth. 1998;10:66-69.

Loo CC, Irestedt L. Cauda equina syndrome after spinal anaesthesia with hyperbaric 5% lidocaine: a review of six cases of cauda equina syndrome reported to the Swedish pharmaceutical insurance 1993-1997. Acta Anaesthesiol Scand. 1999;43:371-379.

Drasner K. Repeat injection after a "failed spinal": at times, a potentially unsafe practice. Anesthesiology. 1991;75:713-714.

Drasner K. Lidocaine in spinal anesthesia: a vanishing therapeutic index?. Anesthesiology. 1997;87:469-472.

Schneider M, Ettlin T, Kaufmann M. Transient neurologic toxicity after hyperbaric subarachnoid anesthesia with 5% lidocaine. Anesth Analg. 1993;76:1154-1157.

Sjöström S, Bläss J. Severe pain in both legs after spinal anaesthesia with hyperbaric 5% lignocaine solution. Anaesthesia. 1994;49:700-702.

Hampl KF, Schneider MC, Thorin D. Hyperosmolarity does not contribute to transient radicular irritation after spinal anesthesia with hyperbaric 5% lidocaine. Reg Anesth. 1995;5:363-368.

Pollock JE, Neal JM, Stephenson CA. Prospective study of the incidence of transient radicular irritation in patients undergoing spinal anesthesia. Anesthesiology. 1996;84:1361-1367.

Hampl KF, Schneider MC, Pargger H. A similar incidence of transient neurologic symptoms after spinal anesthesia with 2% and 5% lidocaine. Anesth Analg. 1996;83:1051-1054.

Hampl KF, Heinzmann-Wiedmer S, Luginbuehl I. Transient neurologic symptoms after spinal anesthesia: A lower incidence with prilocaine and bupivacaine than with lidocaine. Anesthesiology. 1998;88:629-633.

Hodgson PS, Liu SS, Batra MS. Procaine compared with lidocaine for incidence of transient neurologic symptoms. Reg Anesth Pain Med. 2000;25:218-222.

Weert K, Traksel M, Gielsen M. The incidence of transient neurological symptoms after spinal anaesthesia with lidocaine compared to prilocaine. Anaesthesia. 2000;55:1003-1024.

Martinez-Bourio R, Arzuaga M, Quintana JM. Incidence of transient neurologic symptoms after hyperbaric subarachnoid anesthesia with 5% lidocaine and 5% prilocaine. Anesthesiology. 1998;88:624-628.

Liguori GA, Zayas VM, Chisholm MF. Transient neurologic symptoms after spinal anesthesia with mepivacaine and lidocaine. Anesthesiology. 1998;88:619-623.

Pollock JE. Management of the patient who develops transient neurologic symptoms after spinal anesthesia with lidocaine. Tech Reg Anesth Pain Manage. 2000;4:155-160.

Jong RH. Last round for a "heavy weight"?. Anesth Analg. 1994;78:3-4.

Beardesley D, Holman S, Gantt R. Transient neurologic deficit after spinal anesthesia: local anesthetic maldistribuition with pencil point needles?. Anesth Analg. 1995;81:314-320.

Naveira FA, Copeland S, Anderson M. Transient neurologic toxicity after spinal anesthesia, or is it myofascial pain?: Two case reports. Anesthesiology. 1998;88:268-270.

Dahlgren N. Transient radicular irritation after spinal anesthesia - replay 2. Acta Anaesthesiol Scand. 1996;40:865.

Pollock JE, Liu SS, Neal JM. Dilution of spinal lidocaine does not alter the incidence of transient neurologic symptoms. Anesthesiology. 1999;90:445-450.

Freedman JM, Li DK, Drasner K. Transient neurologic symptoms after spinal anesthesia: an epidemiologic study of 1,863 patients. Anesthesiology. 1998;89:633-641.

Carpenter RL. Hyperbaric lidocaine spinal anaesthesia: do we need an alternative?. Anesth Analg. 1995;81:1125-1128.

Pollock JE, deJong RH. Hyperbaric lidocaine for spinal anesthesia?. Am J Anesthesiol. 1997;24:161-165.

Pollock JE, Burkhead D, Neal D. Spinal nerve function in five volunteers experiencing transient neurologic symptoms after lidocaine subarachnoid anesthesia. Anesth Analg. 2000;90:658-665.