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Query: UMLS:C0030193 (pain)
 261,466 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Administration of propofol in paediatric anaesthesia is relatively recent. Cardiovascular effects are minimal. Respiratory depression observed is in part in relation with the decrease of CO2 response. EEG tracing does not show spikes or "burst suppression" for usual doses. Pharmacokinetics are similar to those reported for young adults with the exception of a larger central compartment volume. Dosage depends particularly on age, injection speed and premedication. Propofol is often used for induction, halogenated agents taking over with a narcotic and a myorelaxant. Main disadvantages is pain on injection which are reduced by addition of lignocaine. Spontaneous movements during induction appeared chiefly with low doses. The most important advantage of propofol is the rapidity and the quality of recovery. Propofol has its place in paediatric anaesthesia and in addition sedation in intensive care unit is an new unexplored field.
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PMID:[Propofol in pediatric anesthesia]. 177 70

Variables of ventilation were obtained preoperatively and during the first two postoperative days in 28 patients after thoracic surgery. All patients received 0.5% bupivacaine with epinephrine, 5 micrograms.ml-1 (5-10 ml), through an epidural catheter at the thoracic level supplemented by light general anesthesia. One hour after the initial dose of bupivacaine, patients were randomly allocated to one of two groups: an epidural (EP) sufentanil and an intravenous (IV) sufentanil group. Both groups received 0.125% bupivacaine via continuous epidural infusion postoperatively for three days. In addition, the EP group received 0.83 micrograms.ml-1 sufentanil added to the epidural infusion of 5-10 ml.hour-1, while the IV group received an identical dose of sufentanil via continuous intravenous infusion of 5-10 ml.hour-1. The ventilatory response to 5% CO2 was analyzed preoperatively and on postoperative Days 1 and 2. No significant depression in ventilatory response to CO2 could be detected by measurement of minute ventilation and mouth occlusion pressure at 100 milliseconds (P0.1). Pain measurement was assessed by blinded observers using the Inverse Visual Analog Scale, where 0 signifies most pain and 10 signifies least pain. The mean scores were above 7 in both groups and were attained at similar analgesic requirements. The incidence of side effects was not different. Only the initial mean sufentanil plasma levels in patients of the IV group were higher than those of the EP group. This study shows that the variables of ventilation were not affected by sufentanil administered via the epidural or the intravenous route, and that both techniques provided excellent pain relief when employed to supplement low-dose 0.125% bupivacaine epidurally.
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PMID:Ventilatory function and continuous high thoracic epidural administration of bupivacaine with sufentanil intravenously or epidurally: a double-blind comparison. 182 66

In a prospective study designed to evaluate four methods of endometrioma treatment by laparoscopy, 26 patients had the endometriomas excised, 24 had them opened and the lining stripped off, 30 had them opened and the lining evaporated by CO2 laser, and 44 had them opened and drained. Only women who had laparoscopy because of pelvic pain and who had no immediate desire for pregnancy were included in this study. Those who did not undergo a second-look laparoscopy were excluded. Pain disappeared completely from all subjects regardless of the method of treatment. At second-look laparoscopy, all women in the excision group, nine (37%) in the group who had the lining stripped, nine (30%) in the group who had the lining evaporated, and 12 (27%) in the drainage group had periadnexal adhesions. Residual endometriosis was found in 23, 25, 33, and 30% of these groups, respectively. Because there was a statistical difference between the excision group and each of the remaining three groups in the formation of adnexal adhesions and because there was no statistical difference among the four groups regarding the presence of residual endometriosis, we conclude that laparoscopic treatment of endometriomas should not include excision but rather drainage with or without elimination of the inner lining.
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PMID:Comparison of different treatment methods of endometriomas by laparoscopy. 153 Sep 89

One hundred women with cul-de-sac obliteration secondary to retrocervical deep fibrotic endometriosis (48 partial, 52 complete) were treated laparoscopically for infertility (46 cases), pain (46), hypermenorrhea (7) and a mass (1). The surgical techniques included aqua-dissection, electrosurgery, CO2 laser, scissors, probes to identify the upper posterior vagina and rectum, and multiple rectovaginal examinations. In all the procedures the anterior rectum was freed to the loose areolar tissue of the rectovaginal septum prior to excising deep fibrotic endometriosis. The viable intrauterine pregnancy rate among patients with infertility was 70% (32/46). Of patients presenting with pain, 89% (41/46) reported significant relief. The average operating time was 178 minutes. Laparoscopic cul-de-sac dissection, though time intensive, offers increased fertility potential and significant symptom relief.
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PMID:Laparoscopic treatment of cul-de-sac obliteration secondary to retrocervical deep fibrotic endometriosis. 183 40

A carbon dioxide laser, used in a rapidly pulsed mode, was evaluated for intra-articular use in horses. Under arthroscopic guidance, a lensed 5 mm laser probe attached directly to a hand-held carbon dioxide laser was inserted into one intercarpal joint of eight horses. In four horses, a cartilage crater 1 cm in diameter was created to the level of the subchondral bone of the articular surface of the third carpal bone. In four horses, the laser was directed perpendicular to the articular surface of the third carpal bone and activated to penetrate the cartilage and subchondral bone. The intercarpal joint of the opposite carpus in each horse was subjected to arthroscopic examination and insertion of the laser probe for an equivalent time. The laser was not activated and these joints served as sham operated controls. The horses were evaluated clinically for 8 weeks, then euthanatized, and the joints were examined radiographically, grossly, and histologically. Pulsed carbon dioxide laser vaporized cartilage readily but penetrated bone poorly. Cartilage vaporization resulted in no greater swelling, heat, pain on flexion, lameness, or synovial fluid reaction than the sham procedure. Laser drilling resulted in a shallow, charred hole with a tenacious carbon residue, and in combination with the thermal damage to deeper bone, resulted in increased swelling, mild lameness and a low-grade, but persistent synovitis. The carbon dioxide laser is a useful intra-articular instrument for removal of cartilage and has potential application in inaccessible regions of diarthrodial joints. It does not penetrate bone sufficiently to have application in subchondral drilling.
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PMID:Pulsed carbon dioxide laser for cartilage vaporization and subchondral bone perforation in horses. Part I: Technique and clinical results. 185 52

Brief cutaneous heat stimuli generated by a CO2 laser were used to elicit late somatosensory evoked cerebral potentials (SEPc) in 10 patients with syringomyelia. For comparison, early and late cerebral potentials in response to electrical nerve stimuli (SEPn) were recorded in the same session. In 8 patients with localized impairment of pain and temperature sensitivity we found complete absence of SEPc after stimulation of the affected area; in another patient with similar sensory deficits, the SEPc was grossly attenuated and delayed. In 1 patient with intact pain sensitivity but absent temperature sensitivity, a well defined SEPc could be recorded. Both early cortical SEPn and late SEPn in response to conventional nerve stimuli were normal in all patients and thus did not differentiate control and affected areas. These data indicate that alteration of SEPc correlates with altered pain sensitivity in patients with a circumscribed spinal lesion. SEPc may thus be used as a neurophysiological test in the assessment of hypalgesic dermatomes.
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PMID:Cerebral potentials evoked by painful, laser stimuli in patients with syringomyelia. 188 68

Pain-related somatosensory evoked potentials following CO2 laser stimulation (pain SEPs) and conventional electrically-stimulated SEPs (electric SEPs) were examined in 8 patients with syringomyelia who showed various forms of dissociated sensory loss. Unlike clinical examination using a pin or needle, pain SEP is considered to be an objective and quantitative test to investigate functions of peripheral and central sensory pathways responsible for pain-temperature sensation (A delta fibres and the spinothalamic tract). Pain SEPs were abnormal in all patients. The results were generally compatible with the degree of a clinical impairment of pain-temperature sensation. Subclinical abnormality was detected in 3 patients. Electric median nerve SEPs using the scalp reference (Fz) were normal in 6 out of 8 patients. However, anterior and posterior cervical responses using a noncephalic reference were absent or small in 7 patients. Electric SEPs following tibial nerve stimulation were normal in 7 patients. These findings suggest that the function of the ascending fibres through the dorsal columns is intact in most patients, whereas the dorsal horn, where a fixed cervical potential is generated, is impaired. Pain SEPs combined with electric SEPs therefore appear to be extremely useful for investigating physiological function in the sensory pathways in patients who show 'dissociated sensory loss' such as in syringomyelia.
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PMID:Pain-related somatosensory evoked potentials in syringomyelia. 188 83

Since Sept. 1, 1989, we have successfully performed 20 video-endoscopic, transnasal, laser-assisted lacrimal procedures on 18 patients ranging in age from 3 to 88 years. This technique avoided a cutaneous scar and caused less surgical trauma and bleeding than that seen in conventional lacrimal surgery, which shortened postoperative recovery time and lessened postoperative pain. With minor modifications in surgical technique, both dacryocystorhinostomy and conjunctivodacryocystorhinostomy were performed with either the potassium titanyl phosphate or carbon dioxide lasers. The use of the video endoscope allowed laser surgery to be performed across a broad range of intranasal structural variations and provided an excellent medium for teaching this new technique.
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PMID:Endoscopic laser-assisted lacrimal surgery. 189 36

Three postoperative analgesic protocols were assigned randomly to 24 healthy dogs after thoracotomy at the left fourth intercostal space. Morphine was administered parenterally to eight dogs after tracheal extubation; selective intercostal nerve blocks with bupivacaine hydrochloride and epinephrine were administered to eight dogs before closure of the thorax; and bupivacaine hydrochloride and epinephrine were administered through an interpleural catheter to eight dogs after tracheal extubation. Heart rate, respiratory rate, rectal temperature, hematocrit, plasma protein, blood gas, and pain score evaluations were recorded before surgery and 30 minutes, 1 hour, 2 hours, and 3 hours after extubation. Morphine caused significant decreases in blood pH and blood oxygen tensions, and significant increases in carbon dioxide tensions. Dogs treated with intercostal nerve blocks had no significant changes in these parameters, and dogs treated with interpleural bupivacaine had significant decreases in blood oxygen tension. All dogs had significant decreases in rectal temperature, and hypothermia was prolonged after morphine. Analgesia was initially adequate in most dogs, but some dogs in each treatment group had recurrence of pain and were treated with interpleural bupivacaine. One dog developed pneumothorax. Interpleural administration of bupivacaine produced analgesia equal to that produced by systemic administration of morphine or selective intercostal nerve block with bupivacaine. Bupivacaine was easily readministered through an interpleural catheter. Respiratory compromise was less in dogs treated with bupivacaine than in dogs treated with morphine. After intercostal thoracotomy, interpleural bupivacaine provided prolonged analgesia with fewer blood gas alterations than morphine.
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PMID:Analgesia in dogs after intercostal thoracotomy. A comparison of morphine, selective intercostal nerve block, and interpleural regional analgesia with bupivacaine. 190 Nov 83

Multiple cutaneous and superficial subcutaneous metastases from malignant melanoma in 30 patients were treated palliatively by carbon dioxide laser ablation when lesions were to numerous, too large or recurring too rapidly for multiple local excisions. The number of lesions per patient ranged from three to 250 (median 30). Patients were treated under local or general anaesthetic and as day cases or inpatients. After a median follow-up interval of 8 months fewer than 1 per cent of lasered metastases have recurred locally. Sixteen patients have developed cutaneous metastases at other sites requiring further treatment. Approximately 2000 lesions have been treated on 64 occasions. Patients reported little or no pain after the operation and required only simple dry dressings. Wounds were completely healed in 2-6 weeks with good cosmetic results. This simple and effective treatment is becoming an alternative to isolated limb perfusion.
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PMID:Carbon dioxide laser ablation of cutaneous metastases from malignant melanoma. 190 20


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