Intraspinal Narcotic Analgesia in the Treatment of Chronic PainAULD, ALBERT W., MD; MAKI-JOKELA, ANNE, RN; MURDOCH, D M, RNSpine: October 1985 - Volume 10 - Issue 8 - p 777-781 Original Article: PDF Only Buy Abstract Author InformationAuthors The results of intraspinal narcotic analgesia (INA) in 43 patients with chronic nonmalignant pain syndromes are reviewed. A protocol has been established to improve proper patient selection and includes three phases of study. Most of the patients have had INA for 2 years now. In those patients qualifying for continuous delivery systems (CDS), 65% had good to excellent relief of pain while 34% were considered failures for a variety of reasons. Apparent tolerance development in many of the patients was, in fact, due to technical problems with the epidural catheter instead. From Doctors' Hospital, Lake Worth, Florida and JF Kennedy Hospital, Lantana, Florida © Lippincott-Raven Publishers.