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Biomedical subjects

J I Muñoz Bonet

Publications and source records attributed to J I Muñoz Bonet.

4 recordsLinked to original sources

[Definitions in mechanical ventilation].

Mechanical ventilation can be defined as the technique through which gas is moved toward and from the lungs through an external device connected directly to the patient. The clinical objectives of mechanical ventilation can be highly diverse: To maintain gas exchange, to reduce or substitute respiratory effort, to diminish the consumption of systemic and/or myocardiac O2, to obtain lung expansion, to allow sedation, anesthesia and muscle relaxation, and to stabilize the thoracic wall, etc. Ventilation can be carried out by negative extrathoracic pressure or intermittent positive pressure. According to the cycling mechanism, positive-pressure ventilators are classified as pressure-cycled, flow-cycled, or mixed, and according to the type of flow in continuous-flow ventilators, as intermittent flow or constant basic flow. Finally, high-frequency ventilators are classified according to their high-frequency mechanism as intermittent positive pressure, oscillatory high-frequency and high-frequency jet ventilators.

Child↗

[Cerebral infarct secondary to carotid artery dissection].

Dissection of the internal carotid artery is an important cause of ischemic stroke in children and young patients. Trauma and/or an underlying structural defect of the arterial wall have been suggested to be predisposing factors. The typical patient presents with ipsilateral headache or neck pain, ipsilateral Horner's syndrome and delayed ischemic symptoms. Diagnosis is given by ultrasound, transcranial Doppler, magnetic resonance imaging, magnetic resonance angiography and conventional angiography. Treatment of this type of injury includes anticoagulation therapy, antiplatelet therapy and surgery. We report a 14-year-old boy with internal carotid artery dissection who presented with ischemic stroke.

Adolescent↗

[Techniques and complementary techniques. Intubation, sedation and adaptation to mechanical ventilation].

Endotracheal intubation consists on placing a tube in the trachea either through the mouth (orotracheal intubation) or through the nose (nasotracheal intubation). Although maintaining the airway patent and providing adequate ventilation are not synonymous with intubation, this procedure provides a closed ventilation system while ensuring patency and protecting the airway. Intubation is fairly safe in oxygenated and physiologically stable patients but it is not free from serious complication and consequently it should always be considered as a dangerous technique, especially in critically-ill patients. In addition, given that the anatomy of the airway in children differs according to age, the techniques used to intubate show considerable variations. For all these reasons and despite the often urgent nature of airway problems in children, the placement of an endotracheal tube must be approached in a deliberate and calm manner if trauma to the airway and patient instability are to be avoided. Thus, whenever circumstances permit, intubation should be carefully prepared with assessment of factors that might cause problems such as the indication for intubation, possible airway abnormalities, risk of aspiration, and hemodynamic, respiratory and neurological status. Such and evaluation allows the most appropriate intubation technique to be chosen.

Anesthetics↗