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At least 595 records · Page 33Linked to original sources
PubMed2002

Complications of general anesthesia using nitrous oxide in eyes with preexisting gas bubbles.

PURPOSE: To present the visual and anatomical outcomes for patients with intraocular gas placed during vitreoretinal surgery who subsequently underwent surgery wherein general anesthesia with nitrous oxide was used. METHODS: The authors reviewed the charts of patients who had undergone vitreoretinal surgery where a long-acting gas tamponade had been used. These patients underwent additional surgery for a variety of reasons at five different institutions and had nitrous oxide used during general anesthesia. The authors reviewed the preoperative and postoperative findings for patients receiving nitrous oxide following vitreoretinal surgery with gas tamponade. RESULTS: The authors reviewed findings for five eyes of five patients. All eyes that underwent general anesthesia using nitrous oxide had significant preexisting intraocular gas bubbles ranging from 40% to 90%, and the surgical procedures lasted from 1 to 4 hours. These eyes were followed from 2 months to 9 years (median follow-up, 4 years). Four of five eyes had a final vision of 20/200 or worse and significant optic atrophy at the time of the last follow-up examination. Three eyes had no light perception. CONCLUSION: The use of nitrous oxide during general anesthesia in gas-filled eyes may have disastrous visual results caused by gas expansion and elevated intraocular pressure. Patients must be advised of the potentially catastrophic results of undergoing general anesthesia before their intraocular gas bubble has resorbed. The use of nitrous oxide for patients with intraocular gas should be avoided. It may be prudent for patients with intraocular gas to wear notification bracelets warning anesthesiologists about the presence of intraocular gas lest emergency surgery be needed by a patient unable to advise anesthesia personnel about the potential danger.

Anesthesia, General↗
PubMed1991

Complications of epidural anesthesia: MR appearance of abnormalities.

Eight patients with acquired intradural arachnoid abnormalities caused by epidural anesthesia were evaluated with magnetic resonance (MR) imaging (eight patients) and intraoperative ultrasound imaging (four patients). Subarachnoid cysts were found in the lower cervical and thoracic spine in six patients. Irregularity of the surface of the cord was noted in seven cases. Associated intramedullary cysts and myelomalacia were seen in two patients. Arachnoiditis was unsuspected clinically in four patients; findings at MR imaging first suggested the cause of the patients' symptoms. The underlying mechanism for the intradural and cord abnormalities in seven of the eight patients was a chemically induced arachnoiditis produced by the administration of epidural anesthesia; in the eight case, an infection introduced at the time of the epidural injection was the cause of the abnormalities. The authors postulate that the preservative agents in the vials of anesthetic may have been the causative factor of this inflammation in the majority of the cases.

Adult↗
PubMedDate not supplied

Use of tympanostomy tubes in otitis media.

Tympanostomy tubes (TT) are frequently employed as treatment for otitis media (OM) although there is little-clinical or experimental evidence of their efficacy. Potential detriments of TT include cost, risk of inhalation anesthesia, intraoperative complications, and tympanic membrane (TM) damage. Potential benefits include elimination of the conductive hearing loss (CHL), reduction in the occurrence of acute purulent OM, and avoidance of sequelae. The cost/benefit ratio of TT has never been accurately determined and morbid complications of inhalation anesthesia and the surgical procedure appear to be rate. There is evidence that TT significantly reduce the CHL of OM as well as reduce the incidence of recurrent acute purulent OM and help avoid sequelae. It is therefore determined that the risk of TT insertion for middle ear effusion (occasional TM changes) can be justified, in properly selected patients, by the benefits (immediate improvement in hearing and reduction in the incidence of recurrent acute purulent OM).

Anesthesia, Inhalation↗
PubMed1981

Influence of acupuncture on the postoperative complications following ketamine anesthesia. The importance of manual stimulation of point R and shen menn.

The Authors have investigated the antihallucinogenic and sedative effects of auricular points R and shen menn during surgery under ketamine anesthesia. The results demonstrate that the insertion of the needle in point R is very efficient in reducing hallucinations of ketamine emergence, while the insertion of needle in auricular point shen menn causes only a brief period of sedation in the beginning of the emergence period. The acupunctural technique employed by the Authors has been shown to increase considerably approbation of ketamine anesthesia.

Acupuncture Therapy↗
PubMed1999

[A posterior horn syndrome presumably due to direct trauma to the sacral cord: a rare complication of epidural anesthesia].

I report here a case of a posterior horn syndrome presumably due to sacral cord injury during the procedure of epidural anesthesia. A 43-year-old female underwent hysterectomy for myoma uteri. The operation was initially planned to be performed under epidural anesthesia. When a needle was inserted at the level of Th 12/L 1, she felt severe pain in the medial aspect of the left thigh. After the operation under general anesthesia, intolerable pain continued in the buttocks, the medial aspect of the left thigh, and the posterolateral aspect of the left lower leg. Lumbar MR images demonstrated slight disc hernia but no intra- and extramedullary hematomas. Seven weeks after the operation, she was referred to my clinic for neurologic evaluation. Motor functions were intact. Knee jerks on both sides were hyperactive; other tendon reflexes were normal. Plantar reflexes were indifferent. Thermal and pin-prick sensations were lost in the left S1 dermatome, and moderately impaired in the left S2 dermatome. Light touch and vibration sense showed no remarkable changes. Her sensory disturbance could have been caused by a lesion involving the left posterior horn and lateral spinothalamic tract within the S1 segment of the spinal cord.

Adult↗
PubMed1999

[Complications of spinal anesthesia as the initial symptom in patients with spinal tumor--a report of two cases].

This report describes the onset of symptoms of spinal cord compression by tumor after spinal anesthesia. Two patients underwent caesarean section. Postoperatively, they complained of backache and heaviness in the legs. MRI demonstrated spinal tumor and laminectomy was performed in one case. Postoperatively symptoms improved rapidly. In another case, operation was not performed, but the patient recovered gradually. Onset of symptoms of spinal cord compression by tumor after lumbar puncture can be attributed to displacement of the mass or to vascular engorgement. If after the lumbar puncture, a patient complains numbness, loss of strength, and paresthesias in the legs, we should suspect the presence of the spinal tumor.

Adult↗