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The Effect of Ptosis Surgery on Brow Position and the Utility of Preoperative Phenylephrine Testing.
Ophthalmic Plast Reconstr Surg
February 2017
*Division of Orbital and Ophthalmic Plastic Surgery, Doheny Eye Center, †Division of Orbital and Ophthalmic Plastic Surgery, Jules Stein Eye Institute, University of California, Los Angeles, Los Angeles, California; and ‡Department of Ophthalmology, University of Virginia, Charlottesville, Virginia, U.S.A.
Introduction: Many reports have suggested that upper eyelid position and brow height can be interdependent; however, the relation is not universally observed. This study aims to understand the prevalence of this phenomenon and examine the utility of phenylephrine testing in predicting brow height change after surgery.
Methods: Ptotic eyelids undergoing Muller's muscle conjunctiva resection surgery in which phenylephrine testing was performed were included.
Transcranial direct current stimulation effects in disorders of consciousness.
Arch Phys Med Rehabil
February 2014
Hellenic Center for Neurosurgical Research "Prof. Petros Kokkalis," Athens, Greece; Evangelismos Hospital, Department of Neurosurgery, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
Objective: To assess the efficacy of transcranial direct current stimulation (tDCS) on improving consciousness in patients with persistent unresponsive wakefulness syndrome (UWS) (previously termed persistent vegetative state [PVS]) or in a minimally conscious state (MCS).
Design: Prospective, case series trial with follow-up at 12 months.
Setting: General and research hospital.
Phonomyography of the corrugator supercilii muscle: signal characteristics, best recording site and comparison with acceleromyography.
Br J Anaesth
March 2002
Department of Anaesthesia, Centre Hospitalier de l'Université de Montréal, Québec, Canada.
Background: This study investigated the acoustic signal characteristics and best recording site of phonomyography at the corrugator supercilii muscle and compared phonomyography with acceleromyography.
Methods: In 12 patients (group I), after induction of anaesthesia and insertion of a laryngeal mask, a microphone (frequency range 2.5 Hz to 10 kHz) was placed on six different areas on the forehead and the peak-to-peak response after single-twitch stimulation of the facial nerve was measured.
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