Masui. The Japanese journal of anesthesiology
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Ultrasound guided nerve block has become popular in pediatric practice. We applied this technique to infants undergoing pyloromyotomy. ⋯ We performed ultrasound guided nerve block safely in infants undergoing pyloromyotomy.
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Transportable capnometers(EMMA) can be useful in the emergency department or Rapid Response System. Before EMMA can be implemented, it must be compared with currently employed capnography methods. Methods : The concentration of CO2 in a reference gas was measured by two EMMA machines and a side-stream capnometer (CAPNOX ), respectively. Next, Etco2 in twelve patients under general anesthesia was measured by both EMMA machines and the side-stream capnometer, respectively. Results were analyzed using Pearson's correlation coefficient and the Bland-Altman plot. Results : With regard to the reference gas ([CO2] of 38 mmHg), the EMMA machines reported CO, concentrations of 37.2 mmHg and 35 mmHg, and the capnometer reported 38 mmHg. For the 12 anesthetized patients, 47 Etco2 readings were taken. Pearson's correlation coefficient between the first EMMA machine and the capnometer was 0.98 (P<0.0001, bias 3.6 mmHg, 95% limits of agreement 1.3-5.9mmHg) and between the second EMMA machine and the capnometer was 0.99 (P<0.0001, bias 0.85 mmHg, 95% limits of agreement-0.7-2.4 mmHg). ⋯ In patients under general anesthesia, EMMA measured Etco2 within 4 mmHg of side-stream capnography, indicating sufficient accuracy for clinical use. At the same time, discrepancies in readings between individual machines must be taken into consideration.
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A 93-year-old woman with a vulvar cancer was scheduled for resection of the tumor and sentinel lymph node biopsy under general anesthesia. At the beginning of the operation, a total of 20 ml of 2.5% patent blue was injected into the tumor and the surroundings to identify sentinel lymph node. After the injection, arterial oxygen saturation measured by pulse oximetry gradually dropped to 80%. ⋯ Her perioperative course was uneventful. In case of desaturation after dye injection, it is important to rule out true hypoxemia immediately by performing arterial blood gas analysis. Conversely, CO-oximetry is not necessarily useful for accurate diagnosis.
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Intensive perioperative management is required for adrenalectomy in patients with pheocromocytoma because of the unstable hemodynamics and life threatening cardiovascular disturbances due to catecholamine surge from the neuroendocrine tumors. The aim of this study was to assess the perioperative factors contributing to the hemodynamic changes during surgery in pheochromocytoma. ⋯ The decreases of blood pressure after resections of the central veins are dependent on the perioperative blood NA levels, the level of NA in the perioperative urine testig, and tumor sizes.
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We reviewed the indications for and features of preoperative epidural catheterization under radiographic monitoring. This technique allows easy epidural catheterization and achieves reliable effects for postoperative analgesia, reducing the burden on patients, particularly those with morbid obesity, strong transformation of spine or unilateral operations such as total knee arthroplasty or pneumectomy. Standard methods are as follows: (1) the patient is placed in a prone position on the fluoroscopic table; and (2) the operator usually stands to the left of the patient. ⋯ It is important that the operator advances the catheter to the epidural space on the operative side (right, left or middle). Finally, confirmation is made under radiographic imaging that the catheter remains at the back of the epidural space. Preoperative epidural catheterization under radiographic monitoring is a safe, reliable, and educational method.