Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Apr 1998
Comparative StudyFlow resistances of disposable double-lumen, single-lumen, and Univent tubes.
To compare the airflow resistances of modern double-lumen, single-lumen, and Univent (Fuji Systems Corp; Tokyo, Japan) tubes. ⋯ Flow resistances of modern disposable double-lumen tubes are lower than commonly perceived. In most clinical situations, there will be no decrease in flow resistance when a Rusch or Sheridan double-lumen tube is replaced by a single-lumen tube.
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J. Cardiothorac. Vasc. Anesth. · Apr 1998
Respiratory mechanics and gas exchange during one-lung ventilation for thoracic surgery: the effects of end-inspiratory pause in stable COPD patients.
To examine the effects of end-inspiratory pause (EIP) of different durations on pulmonary mechanics and gas exchange during one-lung ventilation (OLV) for thoracic surgery. ⋯ During the period of OLV in the lateral position of patients with preexisting pulmonary hyperinflation, the magnitude of PEEPi increased and oxygenation decreased significantly, whereas the efficacy of ventilation was not changed by the addition of an end-inspiratory pause to the ventilatory pattern. Because arterial oxygenation is affected by the presence of pulmonary hyperinflation, the method of ventilation should take into account the magnitude of preoperative pulmonary hyperinflation.
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J. Cardiothorac. Vasc. Anesth. · Apr 1998
Effects of inhaled nitric oxide on respiratory system mechanics, hemodynamics, and gas exchange after cardiac surgery.
To evaluate the hemodynamic and respiratory effects of inhaled nitric oxide (NO) in postoperative cardiac patients. ⋯ The effects of NO as a powerful and useful vasodilator agent were confirmed. However, it is important to be aware that the effects observed on respiratory mechanics may interfere with the final response of the respiratory system to NO.
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J. Cardiothorac. Vasc. Anesth. · Apr 1998
Airway compression in children due to congenital heart disease: value of flexible fiberoptic bronchoscopic assessment.
To evaluate the frequency and severity of airway compression due to congenital heart disease in children and validate the use of the fiberoptic bronchoscope to assess them. ⋯ Endoscopy in an awake patient is the only way to evaluate the functional component of a compression due to malacia; the resulting collapse of the airway can cause trapping of air and secretions. Furthermore, fiberoptic bronchoscopy offers a complete examination of the airways and can help detect airway abnormalities that are potential causes of complications. Fiberoptic bronchoscopy is a suitable and well-tolerated examination that is easy to perform at the bedside of the child. This technique optimizes the preoperative assessment of children with congenital heart disease.