laryngeal mask airway versus endotracheal tube for intraocular surgery

The use of the laryngeal mask was compared with tracheal intubation in 20 patients who underwent intraocular ophthalmic surgery and received standardized anesthesia. The changes in intraocular pressure was significantly less in the LMA group at all time points after airway instrumentation. The change in mean arterial pressure was significant between the two groups but the heart rate changes were insignificant. The mean rate pressure product was significantly smaller in LMA group compared with ETT group after both insertion and removal. At the end of the procedure, a significantly higher percentage of patients tracheal tube coughed, reacted to head movement and suffered breath holding as they also complained of postoperative sore throat more than patients with LMA

evaluation of a photo-electronic oscillometric method of blood pressure measurement [Omron HEM 815F]

Readings from an Omron HEM 815F portable blood pressure monitor and a Dinamap 8100 are compared to those obtained from a mercury column sphygmomanometer in this study. Results showed a bias of -3.6 and -2.8 mmHg for systolic and diastolic readings respectively with the Omron HEM 815F, compared to Dinamap 8100 which showed bias of +11.9 and -3.2 mmHg. The limits of agreement for the systolic readings were +/- 23.8 mmHg from the bias [mean difference] with the Omron HEM 815F, compared to +/- 21.8 mmHg with the Dinamap 8100. The Omron HEM 815F is a small monitoring device that produces readings of comparable accuracy to those produced by the Dinamap 8100

comparison of the omron HEM 815F and direct arterial pressure monitoring during hypotensive anesthesia

The Omron HEM 815F was compared to direct intraarterial pressure monitories in 20 patients undergoing middle ear surgery, an operation that requires a period of hypotension which was achieved by using sodium nitroprusside infusion. Marked agreement was recorded for systolic arterial pressure and heart rate. However, there was no agreement of mean and diastolic pressures. Direct arterial pressure monitoring remains the method of choice