Equipment Design

Publication Title: 
Interactive Cardiovascular and Thoracic Surgery

A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was whether it is safe to cut the temporary epicardial pacing wires (TEPWs) flush with the patient's skin surface prior to discharge. Altogether 105 relevant papers were identified of which 13 case reports represented the best evidence to answer the question. The author, journal, date, country of publication, complications, the culprit TEPW and relevant outcomes are tabulated. All case reports demonstrated a wide spectrum of complications.

Author(s): 
Shaikhrezai, Kasra
Khorsandi, Maziar
Patronis, Marios
Prasad, Sai
Publication Title: 
Clinical Oral Investigations

This study aimed at providing an answer to two clinical questions related to patients with masticatory muscle pain: 1) Does the use of a full-coverage hard acrylic occlusal appliance (stabilization splint) lead to a significant decrease of symptoms? and 2) Is the treatment success achieved with a stabilization splint more pronounced than the success attained with other forms of treatment (including placebo treatment) or no treatment?

Author(s): 
Türp, J. C.
Komine, F.
Hugger, A.
Publication Title: 
Surgical and radiologic anatomy: SRA

The use of Fuji films is simple but their manipulation and result interpretation seem to be difficult in the framework of medical research. The reliability and reproducibility of Fuji films have been proved by many previous studies. This study was undertaken to know precisely the articular zones of the elbow and to determine the compressive stress these areas undergo during different activities, in order to assess the importance of different articular contact areas.

Author(s): 
Chantelot, C.
Wavreille, G.
Dos Remedios, C.
Landejerit, B.
Fontaine, C.
Hildebrand, H.
Publication Title: 
Biomaterials

Electronic retinal implants for the blind are already a market reality. A world wide effort is underway to find the technology that offers the best combination of performance and safety for potential patients. Our approach is to construct an epi-retinally targeted device entirely encapsulated in diamond to maximise longevity and biocompatibility. The stimulating array of our device comprises a monolith of electrically insulating diamond with thousands of hermetic, microscale nitrogen doped ultra-nanocrystalline diamond (N-UNCD) feedthroughs.

Author(s): 
Hadjinicolaou, Alex E.
Leung, Ronald T.
Garrett, David J.
Ganesan, Kumaravelu
Fox, Kate
Nayagam, David A. X.
Shivdasani, Mohit N.
Meffin, Hamish
Ibbotson, Michael R.
Prawer, Steven
O'Brien, Brendan J.
Publication Title: 
Bioelectrochemistry (Amsterdam, Netherlands)

Acute microhemodynamic effects of static and alternating magnetic fields at a threshold level were investigated on modulating the muscle capillary mirocirculation in pentobarbital-anesthetized mice. The skin in a tibialis anterior was circularly removed with 1.5 mm diameter for intravital-microscopic recording of the capillary blood velocity in the tibialis anterior muscle. Fluorescein isothiocyanate (FITC)-labeled dextran (MW 150 kDa) was used for an in vivo fluorescent plasma marker of the muscle capillaries.

Author(s): 
Xu, S.
Okano, H.
Ohkubo, C.
Publication Title: 
IEEE transactions on bio-medical engineering

A model-based closed-loop control system is presented to regulate hypnosis with the volatile anesthetic isoflurane. Hypnosis is assessed by means of the bispectral index (BIS), a processed parameter derived from the electroencephalogram. Isoflurane is administered through a closed-circuit respiratory system. The model for control was identified on a population of 20 healthy volunteers. It consists of three parts: a model for the respiratory system, a pharmacokinetic model and a pharmacodynamic model to predict BIS at the effect compartment. A cascaded internal model controller is employed.

Author(s): 
Gentilini, A.
Rossoni-Gerosa, M.
Frei, C. W.
Wymann, R.
Morari, M.
Zbinden, A. M.
Schnider, T. W.
Publication Title: 
The American Journal of Clinical Hypnosis

The study attempted to assess the effectiveness of two devices in facilitating the induction of hypnosis in subjects preselected as low in hypnotizability. Undergraduates were exposed to no treatment (control) or one of four combinations of devices during the induction phase of being administered the Stanford Hypnotic Susceptibility Scale, Form B of Weitzenhoffer and Hilgard (1959). Analyses revealed only one of the conditions resulted in a significant difference in subjects' realness ratings of hypnotic items and an increase in hypnotizability score.

Author(s): 
Page, R. A.
Handley, G. W.
Rudin, S. A.
Publication Title: 
The American Journal of Emergency Medicine

The purpose of this study was to compare the Oxylator EM-100, a ventilator with a fixed flow and working pressure of 25 to 50 cm H(2)O, with a bag-valve device with respect to safety, efficiency, and efficacy when used by professionals. We conducted a prospective, controlled, caregiver-blind single center study. Induction was followed by ventilation with a bag-valve device oxylator in manual and automatic modes. Steps were repeated under hypnosis, after muscle relaxation with mask, and with an endotracheal tube. Forty patients, aged 48.8 +/- 13.5 years weighing 50 to 111 kg were studied.

Author(s): 
Noordergraaf, Gerrit J.
Van Dun, Peter J.
Schors, Marcel P.
De Jong, Wim
Noordergraaf, Abraham
Publication Title: 
Conference proceedings: ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference

Because of the complexity of raw electroencephalogram (EEG), for the anesthesiologist it is very difficult to evaluate the patient's hypnosis state. Because of this, several depth of anesthesia monitors have been developed, and are in current use at the operating room (OR). These monitors convert the information supplied by the EEG or derived signals into a simple, easy to understand index. Nowadays, general anesthesia is controlled only by the clinician, which decides what is the best drug combination for the patient, regarding all information given by monitors and sensors in the OR.

Author(s): 
Castro, Ana
Amorim, Pedro
Nunes, Catarina S.
Publication Title: 
Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie

PURPOSE: Deep anesthesia during microvascular decompression (MVD) for trigeminal neuralgia and cerebral aneurysm clipping may delay emergence. A new electroencephalographic (EEG) monitor, the EEGo, processes a raw EEG signal using time-delay analysis to display a reproducible signal transition from deep anesthesia through the excitement state to the awake state. We hypothesized that the EEGo monitor would be superior to the bispectral (BIS) monitor, not only in aiding emergence but also in detecting sudden changes in levels of hypnosis.

Author(s): 
Pauls, Ryan J.
Dickson, Timothy J.
Kaufmann, Anthony M.
Cappellani, Ronald B.
Ringaert, Kenneth R. A.
West, Michael
Silvaggio, Joseph A.
Wilkinson, Marshall F.
Girling, Linda G.
Mutch, W. Alan C.

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