Articles: intubation.
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Prior to approval of the EOA, this device had not been documented to be effective in oxygenation and ventilation in the pre-hospital arena. The studies quoted to demonstrate its usefulness were done in the very controlled environment of the operating room or of the emergency department. Indeed, the studies on blood gases obtained immediately upon entry into the emergency department would indicate that the esophageal obturator airway is an inadequate and ineffectual pre-hospital airway. ⋯ It has been tested in the operating room and the emergency department. In a study done on unsuccessfully resuscitated patients, it was as effective as an ETT. However, no study has shown that the PTL can be used successfully in the pre-hospital setting by ambulance personnel.(ABSTRACT TRUNCATED AT 250 WORDS)
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Randomized Controlled Trial Clinical Trial
Effects of clonidine on narcotic requirements and hemodynamic response during induction of fentanyl anesthesia and endotracheal intubation.
The effects of clonidine, a centrally acting alpha 2-adrenergic receptor agonist, on depth of fentanyl anesthesia and on cardiovascular response to laryngoscopy and intubation were studied. Twenty-four patients undergoing aortocoronary bypass surgery (ACBS) with a history of arterial hypertension, coronary artery disease (NYHA class 3-4), and well-preserved left ventricular function were assigned randomly to either Group 1 (n = 12), who received standard premedication, or Group 2 (n = 12), who received clonidine 5 micrograms X kg-1 po in addition to standard premedication 90 min before estimated induction time. Depth of anesthesia was assessed by on-line aperiodic computerized analysis of the electroencephalogram (Lifescan EEG Monitor). ⋯ By contrast, fentanyl requirements in Group 2 were significantly reduced by 45% when compared with Group 1, i.e., from 110 +/- 23 to 61 +/- 19 micrograms X kg-1 (P less than 0.001). The authors conclude that at a similar anesthetic depth, as assessed by the EEG shift into the lower frequency range (0.5-3 Hz), a markedly reduced fentanyl dose effectively prevented the hyperdynamic cardiovascular response to laryngoscopy and intubation in the group of patients premedicated with clonidine. This is likely explained by the known synergistic inhibitory action of opiates and alpha 2-adrenoceptor agonists on central sympathetic outflow.
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A new fiberoptic endoscope is presented for the special situation of endotracheal intubation only in anesthesiological and intensive care. There is quite an improved cost efficiency due to decreased price, considering its variety of uses.
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Anesthesia and analgesia · Dec 1985
Clinical Trial Controlled Clinical TrialIntravenous lidocaine as a suppressant of coughing during tracheal intubation.
Effects of intravenously administered lidocaine on cough suppression during tracheal intubation under general anesthesia were evaluated in two studies. In study 1, 100 patients received either a placebo or 0.5, 1.0, 1.5, or 2.0 mg/kg lidocaine intravenously 1 min before tracheal intubation. All visible coughs were classified as coughing. ⋯ The same criteria for determining whether a patient did or did not cough during tracheal intubation were used as in study 1. The incidence of coughing decreased significantly (P less than 0.01) when 2 mg/kg of lidocaine was injected intravenously between 1 and 5 min before our attempting intubation. Cough reflex was suppressed completely by plasma concentrations of lidocaine in excess of 3 micrograms/ml.