Resuscitation
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Comparative Study
Effects of vasopressin on adrenal gland regional perfusion during experimental cardiopulmonary resuscitation.
Despite the important role of the adrenal gland during cardiac arrest, little is known about changes in the adrenal medullary or cortical blood flow in this setting. This study was designed to assess regional adrenal gland perfusion in the medulla and cortex during cardiopulmonary resuscitation (CPR), and after administration of adrenaline (epinephrine) versus vasopressin versus saline placebo. ⋯ Both vasopressin and adrenaline produced significantly higher medullary and cortical adrenal gland perfusion during CPR than did a saline placebo; but vasopressin resulted in significantly higher medullary adrenal gland blood flow when compared with adrenaline.
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Review Randomized Controlled Trial Clinical Trial
The Public Access Defibrillation (PAD) trial: study design and rationale.
The PAD Trial is a prospective, multicenter, randomized clinical study testing whether volunteer, non-medical responders can improve survival from out-of-hospital cardiac arrest (OOH-CA) by using automated external defibrillators (AEDs). These lay volunteers, who have no traditional responsibility to respond to a medical emergency as part of their primary job description, will form part of a comprehensive, integrated community approach to the treatment of OOH-CA. The study is being conducted at 24 field centers in the United States and Canada. ⋯ The primary endpoint is the number of OOH-CA victims who survive to hospital discharge. Secondary endpoints include neurological status, health-related quality of life (HRQL), cost, and cost-effectiveness. Data collection will last approximately 15 months and is expected to be completed in September 2003.
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Comparative Study
The assessment of three methods to verify tracheal tube placement in the emergency setting.
We studied prospectively the reliability of clinical methods, end-tidal carbon dioxide (ETCO(2)) detection, and the esophageal detector device (EDD) for verifying tracheal intubation in 137 adult patients in the emergency department. Immediately after intubation, the tracheal tube position was tested by the EDD and ETCO(2) monitor, followed by auscultation of the chest. The views obtained at laryngoscopy were classified according to the Cormack grade. ⋯ The frequencies of Cormack grade 1 or 2 were 83.9% in the non-cardiac arrest, and 95.1% in the cardiac arrest patients. In conclusion, the ETCO(2) monitor is the most reliable method for verifying tracheal intubation in non-cardiac arrest patients. During cardiac arrest and cardiopulmonary resuscitation, however, negative results by the ETCO(2) or the EDD are not uncommon, and clinical methods are superior to the use of these devices.
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Current guidelines advise discussion with patients before issuing a 'do not attempt resuscitation' (DNAR) order. We report five audit cycles of cardiopulmonary resuscitation (CPR) documentation after introducing a proforma, the last cycle following the latest guidelines. In first audit data were collected from 75 patient discharges. ⋯ Four subsequent point prevalence audits carried out on all inpatients following proforma introduction showed documentation improved to 102/109 (94%), 135/148 (91%), 131/140 (94%) and 102/119 (86%) in cycles two, three, four and five, respectively. The last three audits also revealed that consultants consistently made more DNAR orders than trainee doctors. However, following the introduction of the latest guidelines the proportion of patients in whom a decision was made, and the percentage of those decisions that were DNAR, fell.
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Comparative Study
'Event tree' analysis of out-of-hospital cardiac arrest data: confirming the importance of bystander CPR.
The British National Service Framework (NSF) for heart disease commended the 'Utstein style' for auditing out-of-hospital cardiac arrests. The NSF also set standards for pre-hospital treatment and response times. To increase the flexibility of Utstein, an 'event tree' technique is proposed as an audit tool. Event trees consist of nodes and branches on which numbers, percentages or probability values are entered. ⋯ The event trees, when combined with the Utstein template, demonstrated the importance of examining comprehensively datasets for both witnessed and unwitnessed cardiac arrests when monitoring performance standards. The analyses also emphasised the relevance of community programmes in Greater London for teaching basic life saving skills.