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A questionnaire survey of dentists regarding knowledge and perceived competence in resuscitation and occurrence of resuscitation emergencies.

Little information has been published on the knowledge and perceived competence of dentists in resuscitation or the occurrence of resuscitation emergencies in dental practice. Further, no such surveys have been done in Australia. A postal survey was therefore devised and the names of 350 dentists were randomly selected from the Australian Dental Association national membership registry. The response rate was approximately 45 per cent and the main results included: just under half of the respondents felt they were competent in basic resuscitation at the time of graduation, that is, in expired air resuscitation (EAR) and cardiopulmonary resuscitation (CPR); just less than two-thirds had undertaken resuscitation training since graduation; about three-quarters felt they would be able to perform EAR and almost two-thirds felt they would be able to perform CPR; almost 90 per cent gained a satisfactory score in a Resuscitation Quiz included in the survey; and just over 5 per cent had had to resuscitate a patient.

Adult↗

Searching for the optimal resuscitation method: recommendations for the initial fluid resuscitation of combat casualties.

Resuscitation can exacerbate cellular injury caused by hemorrhagic shock, and the type of fluid used for resuscitation may play an important role in this injury. Unlike some factors in the treatment of combat casualty, the method of resuscitation is under our control. The prevention of cellular injury through wiser resuscitation strategies would be more advantageous than attempting complex immunomodulation after the damage has already occurred. This article summarizes data from a number of studies to illustrate the differential effects of commonly used resuscitation fluids on cellular injury. Our findings show that resuscitation with hypotonic/isotonic crystalloids, including lactated Ringer's (LR) solution, and artificial colloid solutions, elicit severe immune activation and an up-regulation of cellular injury markers. This effect is not seen with plasma, natural colloids (albumin), and fresh whole blood. Hypertonic fluids cause suppression of neutrophil activation and a milder increase in the expression of cell injury markers compared with isotonic fluids. The effect of various resuscitation fluids on core cellular functions such as gene regulation is also summarized in this article. Finally, because of the uniqueness of combat care, a set of new recommendations for initial fluid resuscitation of combat casualties is proposed.

Animals↗

Sepsis in the baboon: factors affecting resuscitation and pulmonary edema in animals resuscitated with Ringer's lactate versus Plasmanate.

Septic shock and the formation of pulmonary edema were studied in 19 baboons. Four animals served as controls. Four were subjected to deep septic shock by infusion of live E. coli and then deliberately killed while in deep shock. Four were subjected to septic shock, resuscitated with Ringer's lactate (RL), and then killed 11/2 hours after resuscitation was started. Seven were subjected to shock and resuscitation attempted with Plasmanate (PL). Resuscitation with RL was successful for 11/2 hours in all four RL-animals. Resuscitation with PL was successful for 11/2 hours in three of the 7 PL-animals. There was an increased tendency for albumin to extravasate into the interstitium of the lungs after resuscitation. The amount of pulmonary edema, measured by both the thermodye technique and by analysis of post-mortem lung composition, was the same in animals resuscitated with RL and PL. Administration of pure colloid offers no protection to the lungs in resuscitating patients from septic shock.

Animals↗

European Resuscitation Council Guidelines 2000 for Newly Born Life Support. A statement from the Paediatric Life Support Working Group and approved by the Executive Committee of the European Resuscitation Council.

The European Resuscitation Council (ERC) last issued guidelines for the resuscitation of the newly born infant in 1999 [1]. This was an "Advisory Statement" of the International Liaison Committee on Resuscitation (ILCOR). Following this, the American Heart Association and the Neonatal Resuscitation Programme Steering Committee of the American Academy of Paediatrics and representatives of the World Health Organisation, together with representatives from ILCOR, undertook a series of evidence-based evaluations of the science of resuscitation which culminated in the publication of "Guidelines 2000 for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care" in August 2000 [2,3]. The Paediatric Life Support Working Party of the European Resuscitation Council has considered this document and the supporting scientific literature and presents the ERC Newly Born Guidelines in this paper. Readers will find few changes to the ILCOR Advisory Statement recommendations as the new evidence that has emerged since its publication in 1999 has been confirmatory of the ILCOR recommendations.

Advanced Cardiac Life Support↗

Towards new models of cardiopulmonary resuscitation teaching: the role of practical scenario training on surf lifesavers' perceptions of resuscitation efficacy.

INTRODUCTION: Surf lifesavers in Australia undertake numerous resuscitation scenarios in the course of their training and examination. The standard teaching and examination strategy is for the scenario to end with return of spontaneous circulation (ROSC) and then breathing. This study was performed to assess the effect of this training technique on lifesavers' expectation of successful resuscitation and to determine the effect of experience on these expectations. METHODS: Participants were lifesavers from Surf Life Saving Sydney Northern Beaches (SLSSNB). Data was collected by questionnaire. Questionnaires were applied to newly qualified lifesavers, a random sample of patrolling lifesavers and a strategic group of lifesavers with extensive experience in resuscitation. Anticipation of ROSC was recorded on a visual analogue scale (VAS). RESULTS: The mean VAS for the expected likelihood of successful resuscitation was 55.0+/-19.2% (95% CI: 51.3-58.6%). Published rates of ROSC range from 9 to 36.4%. Nearly 80% of our respondents expected better than 36.4% chance of ROSC. There was no difference in anticipation of ROSC between the three groups (F=0.41; 2,99df; P=0.67). Time since learning cardiopulmonary resuscitation (CPR) did not affect the expectancy of ROSC (F=0.92; 5,101df; P=0.47). Similarly, the number of resuscitations performed by an individual did not affect anticipation of successful outcome (F=0.13; 3,102df; P=0.94). CONCLUSIONS: Surf lifesavers in the Sydney Northern Beaches branch have an exaggerated expectation of the chances of successful CPR following cardiac arrest. This expectation did not change with time since learning CPR or participation in actual resuscitations. New models for CPR education need to be investigated.

Adult↗

Impact of survival probability, life expectancy, quality of life and patient preferences on do-not-attempt-resuscitation orders in a hospital. Resuscitation Committee.

Consensus exists that a do-not-attempt-resuscitation order (DNAR) is appropriate if a resuscitation attempt is futile. Less agreement exists when this point is reached. We investigated the influence of three major considerations for in-hospital DNAR orders: expected survival probability after resuscitation, prospects of the patients' current condition without a cardiac arrest and the patients' autonomous decision not to want resuscitation. We calculated an expected survival probability according to two multi-morbidity prediction scores for each patient, assuming the event of cardiac arrest. The prospects of the current condition without a cardiac arrest was estimated by the patients' physician, in terms of life expectancy and quality of life (level of dependency after discharge and pain). The patients' preference was documented from the medical records. A total of 470 patients were included in the study. Fifty-eight patients (12%) had a DNAR-order, 11 of these patients (19%) wanted no resuscitation. The patients' prospects (life expectancy, dependency after discharge), and age proved to be independently associated with the presence of a DNAR order. The odds ratio (OR) for the presence of a DNAR order was 37 (CL 14-107) for an estimated life expectancy less than 3 months, 13 (CL 4-41) for a life in a nursing home and four (CL 2-12) for an age of 80 years and older. Expected survival probability after resuscitation and pain were not independently associated with a DNAR order. We conclude that resuscitation is considered futile on the basis of the patients' age and prospects without cardiac arrest and that the impact of expected survival probability on these decisions is small.

Aged↗

Cardiopulmonary resuscitation in long-term care facilities: a survey of do-not-resuscitate orders in nursing homes.

Growing public debate regarding no cardiopulmonary resuscitation (no-CPR) policies in acute care hospitals, together with recent changes in the patient population of long-term care facilities, has led nursing homes to examine their need for resuscitation policies. To determine current cardiopulmonary resuscitation policies and procedures in nursing homes, medical directors and directors of nursing service in long-term care facilities in Portland, Oregon, were surveyed. Seventy-five percent responded; of these, only 41% reported having a resuscitation policy. Of those with no policy, 70% thought one was needed. Most nursing homes reported that resuscitation was infrequently discussed with patients and families. When a no-CPR determination was made, it was usually documented in the patient's chart. Training in basic life support was required for registered nurses in two thirds of the facilities. Few homes had equipment necessary for advanced life support. It is recommended that: a) nursing homes develop cardiopulmonary resuscitation policies; b) resuscitation orders be made part of the medical record; and c) nursing home personnel increase their ability to perform basic life support.

Aged↗

[Reactions to cardiopulmonary resuscitation: a study on emotions and communication behavior of the resuscitating physician].

Reactions of 20 physicians to cardiopulmonary resuscitation were examined by describing their emotions and communication in over 260 situations of resuscitation. All actions of physicians being helpful for the relatives in their grief change physicians' emotions after resuscitation. Though denial helps the physicians in confrontation with the relatives, it also seems to impair their emotional coping. Coping strategies of physicians are quite different: Young physicians show a pattern of emotional denial and activity in their resuscitation behaviour. Doctors being more experienced tend to deny less in this sense. Physicians with recent loss seem to cope very little emotionally. Active resuscitation behaviour results after resuscitation in being relieved for a short time, but coping is impaired because of the activity pattern. Speaking after resuscitation seems to improve coping.

Adaptation, Psychological↗

Spontaneous gasping increases the ability to resuscitate during experimental cardiopulmonary resuscitation.

OBJECTIVE: To evaluate the effect of spontaneous gasping on cardiorespiratory functions and the ability to resuscitate during experimental cardiac arrest. DATA SOURCES: Studies in rat and pig models during cardiac arrest and cardiopulmonary resuscitation (CPR). STUDY SELECTION: We retrospectively examined the role of spontaneous gasping during the course of experimental studies on cardiopulmonary resuscitation. DATA EXTRACTION: The data were extracted to illustrate the mechanisms of spontaneous gasping and its effects on pulmonary gas exchange and blood circulation during CPR. DATA SYNTHESIS: Spontaneous gasping increased PaO2 and decreased PaCO2 values during precordial compression in the absence of mechanical ventilation. The frequency of gasping during precordial compression was greater in successfully resuscitated animals. A significant linear correlation was established between coronary artery perfusion pressure and both the frequency (r2 = .90, p < .01) and the duration (r2 = 0.69, p < .01) of gasping during untreated ventricular fibrillation and before resuscitation was attempted. Like coronary perfusion pressure, the frequency and duration of gasping predicted the success of cardiac resuscitation attempts. CONCLUSIONS: Spontaneous gasping is associated with both pulmonary and hemodynamic effects during cardiac arrest in experimental animals. Spontaneous gasping is biologically useful and is predictive of a more favorable outcome of resuscitative efforts.

Animals↗

Active compression-decompression resuscitation: analysis of transmitral flow and left ventricular volume by transesophageal echocardiography in humans. Cardiopulmonary Resuscitation Working Group.

OBJECTIVES: This study was designed to test the hypothesis that active compression-decompression cardiopulmonary resuscitation increases transmitral flow and end-decompression left ventricular volume over levels achieved with standard manual cardiopulmonary resuscitation. BACKGROUND: Recently, cardiopulmonary resuscitation incorporating active compression and decompression of the chest has been demonstrated to improve hemodynamic status in a canine model and in humans after cardiac arrest. METHODS: The active compression-decompression device was applied midsternum in five consecutive patients and results compared sequentially (in random order) with those of standard manual cardiopulmonary resuscitation. Both techniques were performed at 80 compressions/min with a 1.5- to 2-in. (3.8 to 5.1 cm) compression depth and a 50% duty cycle. Transesophageal echocardiographic data obtained in each patient included the velocity-time integral of transmitral pulsed Doppler recordings and two-dimensional images of the left ventricle in the long-axis view. Planimetric volume measurements of the left ventricle were obtained at both end-compression and end-decompression. RESULTS: No difference was observed in end-compression volume between the two techniques (p = 0.81). Increased end-decompression volume (active compression-decompression technique 81.3 +/- 12.5 vs. standard technique 69.4 +/- 10.8, p < 0.05), stroke volume (active compression-decompression technique 32.6 +/- 6.8 vs. standard technique 17.6 +/- 5.2, p < 0.05) and velocity-time integral of transmitral flow (active compression-decompression technique 15.8 +/- 4.3 vs. standard technique 7.8 +/- 2.3, p < 0.05) were found in the active compression-decompression group. The transmitral velocity-time integral was highly correlated with left ventricular stroke volume (r = 0.90). CONCLUSIONS: Improved transmitral flow, end-decompression left ventricular volume and stroke volume are seen with active compression-decompression resuscitation, suggesting a biphasic cardiothoracic cycle of flow. Active decompression of the chest appears to be a beneficial adjunct to standard cardiopulmonary resuscitation.

Aged↗

Comparison of ventilation performance: standard resuscitation bag and the resuscitation bag controller.

Clinical evaluation of ventilation performance during resuscitation is largely subjective. A mechanical device, the resuscitation bag controller (RC), which encircles the bag and allows controlled compression may improve the precision and accuracy of ventilation with manual resuscitation bags (MRB). We hypothesize that more precise, controlled pressure ventilation can be delivered with the RC, compared to the MRB. Prehospital (N = 13) and hospital personnel (N = 12) who routinely perform manual ventilation were randomized to either method of ventilation. Operators were instructed to ventilate an intubated adult mannequin. The percent of breaths delivered within a specified range, 800 to 1200 mL, was compared using simple regression analysis. The precision of tidal volume (TV) and peak airway pressure (PAP) was compared between methods and groups using the coefficient of variation. Comparison for significant differences between methods and groups in the number of breaths with a TV less than 800 mL and those with pressures greater than 30 cm H20 was performed using chi square or Fisher's exact test. There were no significant differences in the percent of acceptable breaths or mean TV delivered between methods or groups. The precision (i.e., reproducibility of the same value) of TV for both methods was best for hospital personnel. PAPS were less than or equal to 30 cm H2O for 93% of all breaths. Hospital personnel delivered a significantly greater percent of inadequate (less than 0.8 L) breaths, 19 versus 7.4%, and excessive pressure breaths, 9.2 versus 4.2%, when compared to prehospital personnel. We conclude that the resuscitation bag controller offers little advantage over standard bag resuscitation for adult resuscitation.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

Evaluation of out-of-hospital cardiopulmonary resuscitation with resuscitative drugs: a prospective comparative study in Japan.

OBJECTIVE: This study aimed at evaluating two emergency medical service systems, one in which emergency life-saving technicians (ELSTs) are allowed to administer epinephrine (adrenaline) to patients with out-of-hospital cardiac arrest and one in which ELSTs are allowed to administer epinephrine, lidocaine, and atropine. METHODS: A modified, prospective community health trial was conducted from April 1 to October 31, 2003. Areas served by physician-manned ambulances, where out-of-hospital cardiopulmonary resuscitation (CPR) was performed with resuscitative drugs (experimental areas), were compared to areas served by ELST-manned ambulances, where resuscitative drugs were not administered outside the hospital (reference areas). The sequence of emergency procedures performed in the experimental areas was divided into three phases. Phase I included administration of epinephrine, which simulated administration of epinephrine by ELSTs. Phase II started with the use of lidocaine or atropine. Phases I and II simulated administration of epinephrine, lidocaine, and atropine by ELSTs. Phase III began with administration of another drug. Outcomes, resuscitation rates and 1-month survival rates were determined, and differences between the two types of areas were analyzed. RESULTS: For non-traumatic cardiac arrest, outcomes through phase II in the experimental areas were significantly better than those in the reference areas. Phase I-only outcomes in the experimental areas were better, but not significantly better, than those in the reference areas. CONCLUSION: Use of resuscitative drugs for non-traumatic prehospital CPR appears to be effective in terms of resuscitation rates and 1-month survival rates.

Aged↗

A comparison of standard and a modified method of two resuscitator adult cardiopulmonary resuscitation: description of a new system for research into advanced life support skills.

The study compares two methods of Advanced Life Support by a pair of resuscitators using a bag-valve-mask (BVM) technique. Standard two resuscitator cardiopulmonary resuscitation (CPR) was compared with a modified method of two resuscitator CPR. During the modified CPR one resuscitator held the face mask while the other resuscitator alternates between squeezing the self inflating bag and performing simulated cardiac compressions. Standard CPR was performed at a ventilation:compression ratio of 1:5 while modified CPR was performed at a ventilation:compression ratio of 2:15. Comparisons were made during induction of anaesthesia in 30 ASA I and II patients. Modified CPR produced a greater tidal volume (TV) (P < 0.001), a slower respiratory rate (RR) (P < 0.001) and a faster compression rate (CR) (P < 0.01) (means with (S.D.): modified CPR: TV 990 (220) ml, RR 6 (1) min(-1), CR 82 (8) min(-1); standard CPR: TV 570 (190) ml, RR 10 (2) min(-1), CR 65 (11) min(-1)). A new method for the simultaneous computerised recording of simulated cardiac compressions together with mask pressure and expired gas composition in anaesthetised patients is described.

Adult↗

Saline resuscitation after fixed-volume hemorrhage. Role of resuscitation volume and rate of infusion.

The authors have reported previously that small-volume resuscitation (1.8 x bled volume) with 0.9% NaCl restores blood volume and attenuates hormonal responses after large hemorrhage without correction of arterial hypotension. The authors studied the role of rate of infusion in this observation in chronically prepared dogs (aortic flow probe, right atrial pressure and volume, and arterial catheters) after 30% hemorrhage (24.1 +/- 0.4 mL/kg). After 30 minutes, subjects were observed either without treatment (no resuscitation) or with infusion of 43 mL/kg 0.9% NaCl over 3 hours by one of three protocols: (1) impulse infusion over 10 minutes, (2) variable rate infusion, bolus with tapering infusion, or (3) constant rate infusion. Significant improvement in cardiac output and in blood volume and significant decreases of vasopressin and arterial catecholamines were observed in all fluid-treated groups. This benefit was relatively independent of rate of infusion, although impulse infusion produced greater early improvement, which dissipated with time, and constant rate infusion produced better late results. In none of the fluid-treated groups were these improvements reflected in improved mean arterial pressure compared with the no resuscitation group. The authors conclude that small-volume, slow-rate saline infusion produces physiologic benefits that cannot be assessed by easily measured clinical parameters. Thus, early resuscitation after trauma could aid patients even if arterial pressure is unchanged. This benefit might be even greater in patients with uncontrolled bleeding because arterial pressure, and hence bleeding, may not be increased by resuscitation of this type. A reassessment of the value of prehospital fluid resuscitation in the injured patient is warranted.

Animals↗

Update on cardiac resuscitation for sudden death: International Guidelines 2000 on Resuscitation and Emergency Cardiac Care.

Cardiopulmonary resuscitation developed over the past one half century largely from empiric science and consensus opinions and recommendations. Treatment algorithms and protocols were originally developed to summarize existing recommendations for systematic and regimented use by a heterogenous group of health care providers. Now, resuscitation science and health care teams are focusing on major issues and continuing questions as sudden death rates remain undaunted and the population at risk is rapidly increasing. For the first time, the international resuscitation community has developed an international consensus on Guidelines for Resuscitation and Emergency Cardiac Care. More than 400 basic scientists, clinical trial investigators, and educators defined common priority and scientific areas during the Evidence Evaluation International Meeting in 1999. The science of resuscitation and emergency cardiac care was reviewed for evidence-based support in randomized clinical trials. In 2000, this review was used as a foundation to structure international guidelines. The participants from seven resuscitation councils and foundations realized that regional differences in systems may exist, but the underlying science should be the same. Presented in this article are some of the major issues and controversies discussed in adult advanced cardiac life support, primarily focusing on the major problem of prehospital adult cardiac arrest.

Cardiac Care Facilities↗

Managing the unique size-related issues of pediatric resuscitation: reducing cognitive load with resuscitation aids.

A resuscitation is a complicated event that requires for its optimal outcome the effective completion of a distinct series of actions, some simple, some complex, most occurring simultaneously or in close proximity. In children, these actions are determined not only by the clinical situation, but also by a series of age and size factors particular to each child. Different tasks require different levels of cognitive load, or mental effort. Cognitive load describes the mental burden experienced by the decision maker and will be higher when the task is less familiar or more demanding. In the setting of resuscitation, it refers to the cumulative demands of patient assessment, the ongoing decisions for each of the various steps, and decisions around procedural intervention (e.g., intubation). In children, the level of task complexity and, hence, cognitive load is increased by the unique component of variability of pediatric age and size, introducing logistical factors, many of which involve computations. The purpose of this paper is to examine the effects of age/size-related variables on the pediatric resuscitative process and to explore how these effects can be mitigated using resuscitation aids. The concept of cognitive load and its relation to performance in resuscitation is introduced and is used to demonstrate the effect of the various aids in the pediatric resuscitative process.

Age Factors↗

Colloid solutions for fluid resuscitation.

BACKGROUND: Colloids are widely used in the replacement of fluid volume, however doubts remain as to their benefits. Different colloids vary in their molecular weight and therefore in the length of time they remain in the circulatory system. Because of this and their other characteristics, they may differ in their safety and efficacy. OBJECTIVES: To compare the effects of different colloid solutions in patients thought to need volume replacement. SEARCH STRATEGY: The Cochrane Injuries Group specialised register, The Cochrane Controlled trials register (all years), MEDLINE (1994-98), EMBASE (1974-98) were searched. Bibliographies of trials retrieved were searched and drug companies manufacturing colloids were contacted for information. SELECTION CRITERIA: Randomised and quasi randomised trials comparing colloid solutions in critically ill and surgical patients thought to need volume replacement. The main outcomes measured were death, amount of whole blood transfused and incidence of adverse reactions. DATA COLLECTION AND ANALYSIS: Two authors independently extracted the data and assessed the quality of the trials. MAIN RESULTS: 46 trials met the inclusion criteria, with a total of 2884 participants. Many of the trials were small. In the majority of trials quality was poor or uncertain. Deaths were obtained from 27 trials. Twenty three trials recorded the amount of blood transfused, however quantitative analysis was not possible due to skewness and variable reporting. Thirteen trials recorded adverse reactions, but none occurred. For albumin or PPF versus hydroxyethyl starch (HES) 20 trials reported mortality. The pooled relative risk (RR) was 1.17 (95% CI 0.91, 1.50). For albumin or PPF versus gelatin 3 trials reported mortality. The RR was 0.99 (0.69, 1.42). For gelatin vs HES 3 trials reported mortality, RR was 0.97 (0.65, 1.44). RR was not estimable in the albumin vs dextran, gelatin vs dextran, and HES vs dextran groups. REVIEWER'S CONCLUSIONS: From this review, there is no evidence that one colloid solution is more effective or safe than any other, although the confidence intervals are wide and do not exclude clinically significant differences between colloids. Larger trials of fluid therapy are needed if clinically significant differences in mortality are to be detected or excluded.

Blood Proteins↗