Teresa Mendes de Almeida

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This paper presents a prototype of a platform for biomolecular recognition detection. The system is based on a magnetoresistive biochip that performs biorecognition assays by detecting magnetically tagged targets. All the electronic circuitry for addressing, driving and reading out signals from spin-valve or magnetic tunnel junctions sensors is implemented(More)
BACKGROUND We determined the association between combined spinal-epidural (CSE) anaesthesia and an increase in maternal intrapartum temperature and intrapartum fever. METHODS A randomized, open clinical trial was performed with 70 pregnant women, 35 receiving CSE and 35 receiving only non-pharmacological methods of pain relief during delivery. Association(More)
This paper presents a hand-held microsystem based on new fully integrated magnetoresistive biochips for biomolecular recognition (DNA hybridisation, antibody antigen interaction, etc.). These biochips use magnetic field arraying of magnetically tagged biomolecules and high sensitivity sensors which potentially detect single or few biomolecules.(More)
Massive subcutaneous emphysema is a relatively common complication in invasive techniques, surgical practice and some medical conditions. Subcutaneous emphysema is usually treated conservatively and may only cause minimal symptoms. Even when it is severe, subcutaneous emphysema rarely has pathophysiologic consequences, but it is extremely uncomfortable for(More)
Embedded Systems assume an increasing importance in biomedical applications such as clinical analysis and patient monitoring. The lack of generic architectures make the design of this type of autonomous embedded systems a cumbersome and expensive task. This paper proposes a generic architecture for developing biomedical embedded systems, considering both(More)
This paper presents a recently developed handheld biochip-based microsystem. The microsystem is based on a magneto-resistive array biochip composed of a number of sensing sites with magnetic tunneling junctions (MTJ) and diodes. To drive the MTJ, different techniques are addressed with different types of signals. Filtering strategies are also presented,(More)
UNLABELLED In ALS PEG tube placement attenuates malnutrition, secondary to bulbar dysphagia, and prevents other frequently fatal complications such as chocking and respiratory arrest. Respiratory insufficiency may be associated to the complications observed in this procedure. PEG tubes were placed in 26 patients (10M/16F) with dysphagia using the Gauderer(More)
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