Résumé
BACKGROUND: The goal of this prospective study was to determine the effect of midazolam pretreatment on the desflurane requirement for blunting the sympathetic response after surgical incision (minimum alveolar concentration blockade of adrenergic responses, MAC(BAR)) when desflurane is combined with a target-controlled concentration of remifentanil at 1 ng/ml. METHODS: Sixty-five patients aged 30 to 60 years with American Society of Anesthesiologists physical status of I or II who were undergoing general anesthesia for thyroidectomy were registered for this study. The patients were randomly allocated to receive either 30 microg/kg of midazolam (Group M) or isovolemic saline (Group C) intravenously before anesthetic induction. All patients were anesthetized with propofol, rocuronium, desflurane and remifentanil at a target-controlled effect-site concentration of 3 ng/ml at intubation followed by 1 ng/ml throughout the study. Sympathetic responses to surgical incision were determined 10 minutes after stabilization of end-tidal desflurane and target-controlled remifentanil concentrations. The predetermined end-tidal desflurane concentrations and MAC(BAR) for each group were determined using an up-and-down sequential allocation technique. RESULTS: The MAC(BAR) of desflurane with 1 ng/ml remifentanil concentration was 7.1 and 6.8% without and with midazolam pretreatment, respectively, using Dixon's up-and-down method (P = 0.755). CONCLUSIONS: Midazolam administered intravenously before anesthetic induction does not impact the MAC(BAR) of desflurane with an effect-site concentration of remifentanil 1.0 ng/ml.
Sujets)
Humains , Anesthésie générale , Intubation , Midazolam , Propofol , Études prospectives , ThyroïdectomieRésumé
Lumbar epidural block is one of effective methods for treating low back pain with or without radiculopathy. However, neurologic complications can occur after epidural block due to several causes such as direct nerve injury or epidural hematoma. It is important to determine whether the neurologic complication is related to the procedure or is due to the underlying neurologic disease. We report two cases of patients who complained of weakness in their lower extremities after receiving a lumbar epidural block; they were ultimately diagnosed with amyotrophic lateral sclerosis.
Sujets)
Humains , Sclérose latérale amyotrophique , Hématome , Lombalgie , Membre inférieur , RadiculopathieRésumé
The goal of cancer treatment is generally pain reduction and function recovery. However, drug therapy does not treat pain adequately in approximately 43% of patients, and the latter may have to undergo a nerve block or neurolysis. In the case reported here, a 42-year-old female patient with lung cancer (adenocarcinoma) developed paraplegia after receiving T8-10 and 11th intercostal nerve neurolysis and T9-10 interlaminar epidural steroid injections. An MRI results revealed extensive swelling of the spinal cord between the T4 spinal cord and conus medullaris, and T5, 7-11, and L1 bone metastasis. Although steroid therapy was administered, the paraplegia did not improve.
Sujets)
Adulte , Femelle , Humains , Conus , Traitement médicamenteux , Injections épidurales , Nerfs intercostaux , Tumeurs du poumon , Imagerie par résonance magnétique , Métastase tumorale , Bloc nerveux , Paraplégie , Récupération fonctionnelle , Moelle spinaleRésumé
Hemodynamic monitoring is an essential element in the management of perioperative patients. In addition, anesthesiologists routinely used blood pressure (invasive or non invasive), heart rate, urinary output and central venous pressure as monitoring modalities. Esophageal doppler monitoring, as a minimally invasive hemodynamic assessment tool, has a good correlation with pulmonary artery catheterization in measuring cardiac output. We experienced a case of concealed retroperitoneal hemorrhage in a patient who underwent a laparoscopic subtotal gastrectomy. When surgeons tried to close trocar sites, the patient's blood pressure dropped rapidly. At laparoscopy, we could not find gross bleeding. However, we could detect hypovolemia by esophageal doppler monitoring (CardioQ, Deltex(TM), UK). The procedure was converted to open laparotomy. Thereafter, we could find retroperitoneal hemorrhage, and vascular repair was done successfully. The patient recovered without any other complications.
Sujets)
Humains , Pression sanguine , Débit cardiaque , Cathétérisme par sonde de Swan-Ganz , Pression veineuse centrale , Gastrectomie , Rythme cardiaque , Hémodynamique , Hémorragie , Hypovolémie , Laparoscopie , Laparotomie , Instruments chirurgicauxRésumé
Many medical institutions in Korea have recently been performing an antibody screening test as one of the essential elements of a pre-transfusion test. The Dia antigen is well known as one of the antigens with low incidence among Caucasians; however, it has been discovered with a relatively higher incidence among Mongoloid populations. The frequency of the Dia antigen among the Korean population is estimated to be 6.4-14.5%. But in Korea, a screening panel of cells from abroad without Dia positive cells has been commonly used when a patient has an unexpected antibody screening test. Here we report a case of acute hemolytic transfusion reaction due to Anti-Dia antibody. To prevent other transfusion reaction by anti-Dia antibody, addition of Dia positive cells as unexpected antibody screening test is recommended.
Sujets)
Humains , Incompatibilité sanguine , Incidence , Corée , Dépistage de masse , Composés de pyridiniumRésumé
Tension pneumothorax during one-lung ventilation (OLV) is a rare but life-threatening complication. A 79-year-old male patient who was diagnosed with lung cancer underwent Univent(R) Tube (Fuji Systems Corporation, Tokyo) intubation for left upper lobectomy. Two hours after the initiation of OLV, the patient could not tolerate it. Thus, oneand two-lung ventilation were alternatively applied to continue the operation. After the operation, an emergent chest radiograph was taken, and pneumothorax was found at the right (dependent) lung field.