European journal of anaesthesiology
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Comparative Study
Evaluation of the Aesculon cardiac output monitor by subxiphoidal Doppler flow measurement in children with congenital heart defects.
To evaluate the noninvasive electrical velocimetry (Aesculon) monitor for cardiac output (CO) by subxiphoidal Doppler flow measurement in children. ⋯ We conclude that electrical velocimetry using the Aesculon monitor does not reliably reflect absolute CO values as compared with subxiphoidal Doppler flow measurement.
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Randomized Controlled Trial Comparative Study
Auditory function after spinal anaesthesia: the effect of differently designed spinal needles.
Recurrent, bilateral or unilateral, persistent or transient, mild or profound hearing loss has been reported after spinal anaesthesia. We studied the effects of the needle type (Quincke, ballpen, pencil-point spinal needles) on hearing loss after spinal anaesthesia with the use of pure-tone audiometry. ⋯ Because the use of ballpen and pencil-point needles reduces hearing loss after spinal anaesthesia, these needles are preferred.