Download Restitutional surgery of the ear and temporal bone by Malte Erik Wigand, Roland Laszig, Gerhard Rettinger PDF

9a Endaural exposure of the tympanic membrane (with central perforation) and suprameatal spine. The overhanging squamotympanic suture ( ) conceals Shrapnell’s membrane. b Craniodorsal widening of the external auditory canal. Full exposure of lateral attic wall (left ear). a a b Fig. 10 Establishment of the antrum control hole. a As the posterosuperior meatal wall is thinned out, the periantral cells (arrow) are opened, leading the way to the antrum. b The observation hole behind the long incudal process, exposing the lateral semicircular canal.

6 Intraoperative recording of cochlear nerve action potentials. Enlarged middle fossa approach (right ear). A gold foil electrode is glued to the pericochlear bone in the internal auditory canal, and is partly protected by the overlying meatal dura. Co: cochlea; SSC: superior semicircular canal. Colletti V, Fiorino FG, Mocella S, Policante Z. ECochG, CNAP and ABR monitoring during vestibular schwannoma surgery. Audiology 1998; 37: 27−37. Jannetta PJ, Møller AR, Møller MB. Technique of hearing preservation in small acoustic neuromas.

With an intravenous line in place, we administer midazolam in 1 mg increments. ) rectally. In all cases, we wait until the child can be readily separated from the parents. Standard monitoring consists of pulse oximetry, temperature, electrocardiography, and automated noninvasive blood pressure measurement, and is established before the induction of anesthesia. Inhaled anesthetics: if it is not possible to place an intravenous line before the patient enters the operating room, we use an oxygen/nitrous oxide mixture (1 : 1) and sevoflurane, administered via a pediatric anesthesia circuit.