Articles: intubation.
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There are little data available on success rates, complications, and efficacy of intubation in the pediatric age group by prehospital personnel. In a 12-month period, paramedics successfully intubated 32 of 36 (88.9%) patients for various indications, with a total of 67 attempts. Seventeen of 36 (47.2%) patients survived to hospital admission. ⋯ Paramedics used the straight blade in 21 of 37 patients (56.8%). The study demonstrates that paramedics can intubate pediatric patients with the same success rate as in adult patients. The data support the inclusion of pediatric endotracheal intubation in the scope of paramedic practice.
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Critical care medicine · Jul 1989
Comparative StudyAdditional work of breathing imposed by endotracheal tubes, breathing circuits, and intensive care ventilators.
A disadvantage of spontaneous breathing through an endotracheal tube (ETT) and connector attached to a breathing circuit and/or ventilator (breathing device) is an increase in the work of breathing. The work of breathing associated with ETT of 6 to 9-mm diameter and eight breathing devices was determined, using a lung simulator to mimic spontaneous inspiration at flow rates of 20 to 100 L/min and a tidal volume of 500 ml, at both zero end-expiratory pressure (ZEEP) and 10 cm H2O continuous positive airway pressure (CPAP). Work associated with the breathing devices alone (WCIR) ranged from -0.002 kg.m/L (Servo 900-C ventilator, 7-mm ETT, 20 L/min, ZEEP) to 0.1 kg.m/L (continuous flow circuit, 7-mm ETT, 100 L/min, CPAP), the latter representing 196% of the work of normal breathing. ⋯ This additional work imposed by the ETT varied considerably among devices. Spontaneous breathing through modern ventilators, circuits and ETT imposes a burden of increased work, most of which is associated with the presence of the ETT and connector. Whether this burden represents an impediment to the weaning patient, or has training value for the ultimate resumption of unassisted spontaneous ventilation, remains to be determined.
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Critical care medicine · Jul 1989
Case ReportsEndotracheal tube rupture, accidental extubation, and tracheal avulsion: three airway catastrophes associated with significant decrease in leak pressure.
We report three unusual, catastrophic cases in which a significant decrease in leak pressure around a tracheal tube was noted before the discovery of the ultimate airway problem. A brief review of potential causes of a decrease in leak pressure is included and management of these difficult cases is discussed.
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The haemodynamic responses to laryngoscopy and intubation after induction of anaesthesia with thiopentone alone or in combination with 1.5 mg.kg-1 lidocaine and/or 1.5 or 3.0 microgram.kg-1 fentanyl were measured in 150 patients over 64 years of age to determine whether lidocaine, fentanyl or both lidocaine and fentanyl attenuated the pressor response. Fentanyl reduced the rises in systolic, diastolic and mean arterial pressures, heart rate, and rate pressure product and lidocaine decreased the rises in arterial blood pressure and rate pressure product (P less than 0.05). Fentanyl decreased the incidence of marked fluctuations in haemodynamic variables, often seen in geriatric patients (P less than 0.05). ⋯ Fentanyl-treated patients had a higher incidence of hypotension (P less than 0.05). Respiratory depression developed in only one per cent of the fentanyl-treated patients. Both lidocaine and fentanyl are recommended adjuncts to induction of anaesthesia with thiopentone in geriatric patients.