Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Oct 1994
Letter Case ReportsIncorrectly labelled double-lumen tube.
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J. Cardiothorac. Vasc. Anesth. · Aug 1994
Use of monitoring devices during anesthesia for cardiac surgery: a survey of practices at public hospitals within the United Kingdom and Ireland.
A questionnaire was sent to all 42 public hospitals, within the United Kingdom (UK) and Ireland, known to conduct elective cardiac surgery. Information was sought with regard to the availability of intraoperative monitoring equipment. ⋯ Similarly, continuous monitoring of arterial oxygen tension and oxygen fraction in the gas flow to the bypass machine was not conducted in 28 and 32 hospitals, respectively. This survey revealed that essential anesthetic monitoring devices, as defined by the United Kingdom Association of Anesthetists, are not in routine usage during the pre-bypass and post-bypass phases of anesthesia for cardiac surgery within the British Isles.
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J. Cardiothorac. Vasc. Anesth. · Aug 1994
Transesophageal pulsed-Doppler echocardiographic evaluation of transmitral and pulmonary venous flow during ventilation with positive end-expiratory pressure.
During mechanical ventilation with high levels of positive end-expiratory pressure (PEEP) several hemodynamic changes occur, the mechanism of which has been the subject of various previous studies. The effects of increasing levels of PEEP during mechanical ventilation were measured on left atrial and left ventricular filling dynamics, as assessed by pulmonary venous and transmitral flow velocities, respectively. Using transesophageal echocardiography in 12 patients, Doppler flow velocities of pulmonary venous and transmitral flow were studied at baseline (0 cmH2O PEEP) and at 5, 10, 15, and 20 cm H2O with 10-minute intervals, and once more after removal of PEEP. ⋯ In contrast, early and late diastolic velocities and velocity time integrals did not change. In regard to transmitral flow, both early and late diastolic velocities significantly decreased from 51 +/- 7 cm/s and 50 +/- 9 cm/s at baseline to 38 +/- 7 cm/s at 20 cmH2O PEEP, respectively (P < 0.01). Early and late diastolic velocity time integrals decreased from 6.1 +/- 1.8 cm and 4.7 +/- 1.0 cm to 4.5 +/- 1.0 cm (NS) and 3.4 +/- 0.7 cm (P < 0.05), respectively.(ABSTRACT TRUNCATED AT 250 WORDS)