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PubMedDate not supplied

Analysis of prehospital pediatric and adult intubation.

PURPOSE: Pediatric airway control, including endotracheal intubation (ETI), presents a clinical challenge in the prehospital setting. Endotracheal intubation is recommended for serious head injury (Glasgow Coma Scale score <=8). We evaluated the frequency of ETI in pediatric and adult patients with <=8 in the field, subsequently transported by a hospital-based, helicopter emergency medical service (HHEMS). METHODS: A retrospective, descriptive study of pediatric patients (<=14 years) and adult patients with GCS <=8 transported by HHEMS from January 1988 through March 1994 was conducted. Significance was determined by chi-square analysis. RESULTS: Inclusion criteria were met by 63 (15%) pediatric patients and 353 (85%) adults. Of the pediatric patients, 38 (60%) were intubated endotracheally; mean age was 7; mean injury severity score (ISS) was 28. Of adults, 267 (76%) were intubated endotracheally; mean age was 35; mean ISS was 33. A 16-percentage-point difference in frequency of successful ETI between groups was found to be significant (p <=0.01). Of 25 nonintubated pediatric (PED) patients, unsuccessful attempts were made on 20 (80%); 14 of 25 (56%) had significant head injuries evident on computerized tomography (CT) scan. Of 86 nonintubated adults, unsuccessful attempts were made on 29 (34%); 61 (71%) had significant head injuries. CONCLUSIONS: Pediatric coma patients were not intubated with the same frequency as adults. This discrepancy between groups was secondary to a higher failure rate in the pediatric group. Intubation was attempted in 92% of pediatric patients versus 84% of the adults. Unsuccessful intubation attempts in the pediatric group, 20 of 58 (34%), were compared with 29 of 296 (9.8%) in the adult group. Difficulty in pediatric airway control may require an increased level of training and experience.

Adult↗
PubMed2005

Aspiration of gastric contents: association with prehospital intubation.

We prospectively compared the incidence of pulmonary aspiration of gastric contents between patients endotracheally intubated in the prehospital (PH) setting and those intubated in the emergency department (ED). Tracheal aspirates were collected using a standard Leukens trap from all patients as soon as possible after endotracheal intubation. Tracheal aspirates were then tested for the presence of pepsin, a sensitive and specific marker of gastric contents, using a fibrinogen digestion technique. Over 8 months, 168 patients were enrolled. The pepsin assay was positive in 10 of 20 (50%) patients intubated in the PH group, as opposed to 33 of 148 (22%) of those intubated in the ED (chi2 P=.008; odds ratio, 3.5; 95% CI, 1.34-9.08). Patients endotracheally intubated in the PH setting are more likely to have aspirated gastric contents than those intubated in the ED.

Emergency Medical Services↗
PubMed2006

Tracheal intubation by inexperienced medical residents using the Airtraq and Macintosh laryngoscopes--a manikin study.

The Airtraq laryngoscope is a novel intubation device that may possess advantages over conventional direct laryngoscopes for use by personnel that are infrequently required to perform tracheal intubation. We conducted a prospective study in 20 medical residents with little prior airway management experience. After brief didactic instruction, each participant took turns performing laryngoscopy and intubation using the Macintosh (Welch Allyn, Welch Allyn, NY) and Airtraq (Prodol Ltd. Vizcaya, Spain) devices, in 3 laryngoscopy scenarios in a Laerdal Intubation Trainer (Laerdal, Stavanger, Norway) and 1 scenario in a Laerdal SimMan manikin (Laerdal, Kent, UK). They then performed tracheal intubation of the normal airway a second time to characterize the learning curve. In all scenarios tested, the Airtraq decreased the duration of intubation attempts, reduced the number of optimization maneuvers required, and reduced the potential for dental trauma. The residents found the Airtraq easier to use in all scenarios compared with the Macintosh laryngoscope. The Airtraq may constitute a superior device for use by personnel infrequently required to perform tracheal intubation.

Clinical Competence↗
PubMedDate not supplied

Inverse intubation in air medical transport.

INTRODUCTION: The purpose of this study was to investigate the speed and accuracy of the inverse intubation procedure. TECHNIQUE: The operator crouches or kneels over the patient, straddling the torso. The laryngoscope is held in the operator's right hand in an overhand fashion, inserted gently into the patient's mouth, and pulled up and caudad. When the vocal cords are visualized, the endotracheal tube is passed with the left hand. METHODS: The procedure was taught to flight nurses and respiratory therapists (n = 21) using an intubating mannequin strapped to a stretcher in a BK 117 helicopter to simulate an in-flight intubation. The subjects were timed intubating the mannequin using both inverse and standard intubation techniques. Each technique was performed twice, and the times were averaged. The Wilcoxon Signed Ranks test was used to determine statistical significance. RESULTS: No significant difference occurred between times of the standard (24.0 s) and inverse techniques (21.6 s) (P =.715) or number of attempts for successful endotracheal intubation (1.12 and 1.07, P =.581). CONCLUSION: Inverse intubation is a useful skill for prehospital providers. This skill can be taught in a brief period and used successfully with no compromise in speed or success rate.

Air Ambulances↗
PubMedDate not supplied

Clinical features of patients intubated by a flight team.

INTRODUCTION: Little information exists about the clinical features of patients intubated by a flight program and the relationships of those factors with flight team intervention. METHODS: Prospective analysis was conducted of consecutive patients intubated by a helicopter flight team. RESULTS: The flight team intubated 11.1% of patients transported. Scene origin and trauma diagnosis were associated with flight team intubation (P <.01). The diagnosis distribution differed between scene and interfacility groups (P <.01), with a trauma diagnosis more common in scene patients and a medical diagnosis more common on interfacility flights. The most common clinical indicator for intubation on both scene and interfacility flights was mental status change. The distribution of indicators, however, also varied with patient origin (P <.01). CONCLUSION: The flight team most commonly intubated patients who originated at the scene, suffered traumatic injury, and had altered mental status. Both the diagnosis distribution and primary clinical indicator for intubation varied with patient origin.

Air Ambulances↗
PubMedDate not supplied

A retrospective analysis of the intubations performed during 5 years of helicopter emergency medical service in Amsterdam.

INTRODUCTION: Different skilled personnel perform prehospital airway management, by far one of the most challenging skills with major consequences upon failure. SETTING: The setting for this study was the helicopter emergency medical service at the Vrije Universiteit Medical Center, Amsterdam, the Netherlands. METHODS: We conducted a retrospective analysis of all medical charts of intubated trauma patients in the period from May 1995 to May 2000. We focused on intubation reasons and conditions. RESULTS: In 43 of 653 patients (7%) the process of intubation was recorded as being difficult, leading to 5 failed intubations (11.6%). In 432 of 653 trauma victims (66%), general anaesthesia was required before intubation. Forty (9%) of these patients died, most soon after arrival in the hospital. The clinical condition of 221 (34%) patients was so poor that they did not require additional drugs for intubation; 73% of those patients died, with two-thirds dying at the accident site. CONCLUSION: The rate of difficult intubation in this analysis is low (7%). The overall airway failure (11.6%) is the same as seen in the literature when sedation and relaxation are used. An adult trauma victim with a Revised Trauma Score of 0 has a very poor prognosis of survival.

Air Ambulances↗
PubMedDate not supplied

Using a 0.035-in. straight-tip wire and a small infant laryngoscope for safe and easy endotracheal intubations in rats for cardiovascular research.

OBJECTIVES: Endotracheal intubation in rats is a challenging problem. This is a difficult procedure due to the narrow oral cavity and the difficulty in visualizing the vocal cord. It is associated with high complication rate. We have developed a very safe and simple method using a 0.035-in. straight tip wire as a guide and the small infantile laryngoscope for intubation in rats. METHOD: Seventy Sprague-Dawley rats weighing between 100 and 450 g were used for endotracheal intubation, utilizing a 0.035-in. straight-tip wire, infantile laryngoscope blade Miller size 0 and conventional cutdown 18-gauge catheter. Rats were anesthetized using a mixture of ketamine (50 mg/kg), xylazine (4 mg/kg) and acepromazine (1 mg/kg). The upper incisors were fixed with a rubber band. With the laryngoscope, the trachea and vocal cords were visualized with the tongue pulled back. Under direct visualization of the vocal cords, a 0.035-in. straight-tip wire was advanced into the trachea and an 18-gauge cutdown catheter was advanced over the wire into the trachea. The wire was removed and the catheter was attached to the respirator. With this method, the use of atropine was not necessary. RESULTS: We successfully intubated all 70 rats without any complications. The successful rate was 100% with no mortality related to the intubation. This was performed within 1 to 2 min after induction of anesthesia without using atropin. There was no intra-esophageal or soft tissue intubation. CONCLUSION: With a 0.035-in. straight-tip wire as a guide and a small infant laryngoscope blade Miller size 0, endotracheal intubations in rats can be safely performed with high success rate without the use of atropine, which makes it better suitable for cardiovascular research.

Animals↗
PubMed2004

Nasal versus oral fiberoptic intubation via a cuffed oropharyngeal airway (COPA) during spontaneous ventilation.

STUDY OBJECTIVE: To compare the success rate of nasal versus oral fiberoptic intubation in anesthetized patients breathing spontaneously via the cuffed oropharyngeal airway (COPAtrade mark). DESIGN: Prospective, randomized, controlled study. SETTING: Two university-affiliated hospitals. PATIENTS: Patients scheduled for general or plastic surgery of the torso or extremities. INTERVENTIONS: Nasal (n=20) and oral (n=20) fiberoptic intubation were performed in patients while breathing spontaneously via the COPA during standardized anesthesia. MEASUREMENTS: Demographic data, mean arterial pressure, heart rate, end-tidal carbon dioxide (ETCO2), oxygen saturation (SpO2), COPA size, difficult airway predictors, rate of failed ventilation via COPA, and frequency of hypoxemia (SpO2 < 90%) during the procedure, and perioperative untoward events were recorded. MAIN RESULTS: The background, airway difficulty, vital signs and untoward effects were similar in the two groups. Nasal fiberoptic laryngeal view (scale 1-4) was better than the oral grading (3 [median] vs. 2, respectively; p <0.05). Eighty percent of the nasal intubations were successful compared with 40% of the oral intubations (p <0.05). Nasal intubations were accomplished within 153 +/- 15 SD seconds compared with 236 +/- 22 seconds (p <0.05) for the oral intubations, and less propofol was needed in the nasal intubations during the procedures (240 +/- 27 mg [nasal] vs. 277+/- 39 mg [oral]; p <0.05). CONCLUSIONS: Nasal fiberoptic laryngoscopy is more successful and easy than the oral approach in anesthetized patients who are breathing spontaneously through the COPA.

Administration, Inhalation↗
PubMed2006

Use of the Rapiscope vs chest auscultation for detection of accidental bronchial intubation in non-obese patients undergoing laparoscopic cholecystectomy.

STUDY OBJECTIVE: Main stem bronchial intubation is not always detected by routine means and may occur more frequently during laparoscopic procedures. Tracheal tube positional changes in non-obese patients undergoing laparoscopic cholecystectomy were detected by either the Rapiscope (Cook Critical Care, Bloomington, Ind) or chest auscultation. DESIGN: Prospective, double-blind, crossover study. SETTING: University hospital. PATIENTS: Forty non-obese patients (BMI <28 kg.m(-2)), aged 18 to 80 years, American Society of Anesthesiologists risk class I-III, who underwent elective laparoscopic cholecystectomy were enrolled in this double-blind, prospective study. INTERVENTIONS: After endotracheal intubation by one anesthesiologist, two other anesthesiologists assessed the tracheal tube's positioning by either the Rapiscope or chest auscultation; the results of one anesthesiologist's measurement were concealed from the other. MEASUREMENTS: Assessments of the endotracheal tube tip's position were performed after intubation, head-down, and head-up positioning, after maximal abdominal insufflation and before extubation. At the same time points, Sp(O2), ET(CO2), and peak inspiratory pressures were also recorded. MAIN RESULTS: Postintubation Rapiscope assessment revealed normal tracheal positioning of the tube's tip in all patients. Changes in tube's position were subsequently detected by the Rapiscope in 16 patients. In 8 cases, the tip moved endobronchially. Half of the endobronchial intubations occurred after maximal abdominal insufflation and the other half after changing the table position from neutral to 30 degrees head-down. Chest auscultation detected bronchial intubation in two cases only (P = .01). There were 4 additional events of downward movements and 4 events of cephalad migration of the tube's tip identified by the Rapiscope only. ET(CO2), Sp(O2), and peak inspiratory pressures did not change in patients who did experience bronchial intubation. CONCLUSION: The Rapiscope detected significantly more events of endobronchial intubation as compared with chest auscultation; it could be considered useful during procedures where tracheal tube movements are potential.

Adolescent↗
PubMed2005

Advanced cardiac life support before and after tracheal intubation--direct measurements of quality.

STUDY HYPOTHESIS: Tracheal intubation should improve the quality of cardiopulmonary resuscitation (CPR) by enabling adequate ventilation without pauses in external chest compressions. METHODS: Out-of-hospital cardiac arrests of all causes were sampled in this non-randomized, observational study of advanced cardiac life support in three ambulance services (Akershus, London and Stockholm). Prototype defibrillators (Heartstart 4000SP, Philips Medical Systems, Andover, MA, USA and Laerdal Medical AS, Stavanger, Norway) registered all chest compressions via an extra chest pad with an accelerometer mounted over the lower part of sternum and ventilations from changes in transthoracic impedance between the standard defibrillator pads. The quality of CPR was analyzed off-line for 119 episodes. Numbers and differences are given as mean +/- S.D. and differences as mean and 95% confidence intervals. RESULTS: Chest compressions were not given in cardiac arrest for 61 +/- 20% of the time before intubation compared to 41 +/- 18% after intubation (difference: 20% (16-24%)). Compressions and ventilations per minute increased from 47 +/- 25 to 71 +/- 23 (difference: 24 (19, 29)) and 5.6 +/- 3.7 to 14 +/- 5.0 (difference: 8.7 (7.6, 9.8)) respectively. Four cases of unrecognized oesophageal intubation (3%) were suspected from the disappearance of ventilation induced changes in thoracic impedance after intubation. CONCLUSION: The quality of CPR improved after tracheal intubation, but the fraction of time without blood flow was still high and not according to international guidelines. On-line analysis of thoracic impedance might be a practicable aid to avoid unrecognized oesophageal intubation, but this area needs further research.

Advanced Cardiac Life Support↗
PubMed2003

Incidence of transient hypoxia and pulse rate reactivity during paramedic rapid sequence intubation.

STUDY OBJECTIVE: We determine the incidence of desaturation and pulse rate reactivity during paramedic rapid sequence intubation of patients with severe head injuries (Glasgow Coma Scale score <or=8). METHODS: Adult patients with severe head injuries had recording oximeter-capnometers applied before rapid sequence intubation. Desaturation was defined as a reduction in oxygen saturation (Spo(2)) to less than 90% from an initial Spo(2) of greater than or equal to 90% or a decrease from a baseline of less than 90%. Event records were analyzed with emergency medical services (EMS) run sheets and debriefing reports. RESULTS: Thirty-one (57%) of 54 patients demonstrated desaturation during rapid sequence intubation. Twenty-six (84%) of these 31 events occurred in patients whose initial Spo(2) value with basic airway skills was greater than or equal to 90%. The median duration of desaturation was 160 seconds (interquartile range 48 to 272 seconds), and the median decrease in Spo(2) was 22%. Six (19%) patients experienced marked bradycardia (pulse rate <50 beats/min) during desaturation events. Paramedics described rapid sequence intubation as "easy" in 26 (84%) of 31 patients with desaturation. CONCLUSION: Out-of-hospital rapid sequence intubation by paramedics was complicated by a concerning incidence of desaturation and bradycardia. Paramedic reports did not reflect the presence of these concerning derangements. Most patients had acceptable Spo(2) values before rapid sequence intubation. An effective strategy for preoxygenation is needed before it can be concluded that rapid sequence intubation is of value in the out-of-hospital care of patients with serious closed head injury.

Adult↗
PubMed1990

Oral intubation in the multiply injured patient: the risk of exacerbating spinal cord damage.

The use of oral intubation during the resuscitation of seriously injured patients has been discouraged because of the fear that this technique may lead to cervical cord damage. We report a retrospective study of the 18-month experience of an emergency department in which oral intubation was the usual method of airway control for victims of blunt trauma. There were 237 injured patients intubated in the ED; 21 patients (8.9%) had cervical cord or bone injury. There were no patients in whom a neurologic loss followed an airway maneuver. Oral intubation was the definitive airway maneuver in 213 patients. There was no statistically significant difference in the type of definitive airway maneuver used (eg, oral intubation, nasal intubation, or cricothyrotomy-tracheotomy) between patients with cervical injuries and patients without such injuries. The risk of spinal cord injury secondary to oral intubation in the seriously injured patient was low in our population. Selection of the method for definitive airway control should be based primarily on the operator's skills and experience rather than the fear of inflicting cervical cord damage.

Adult↗
PubMed1989

Unrecognized endobronchial intubation of emergency patients.

Although intubation of emergency patients in the field is a routine measure, endotracheal tube misplacement remains a serious problem. Using radiologic criteria, the frequency of undetected endobronchial intubation by physicians was determined retrospectively in 100 (78 traumatized) field-intubated adult patients (72 men and 28 women; age, 18 to 90 years; mean age, 39.1 years) consecutively admitted to the University Hospital of Tuebingen, Tuebingen, Federal Republic of Germany, between January 1987 and February 1988. Position of tube tip relative to carina was evaluated on anteroposterior chest radiographs made on admission. Inadvertent endobronchial intubation was not recognized by the physician and the admitting anesthesiologist in 7% of the reviewed cases, and endotracheal positioning of the tube tip near the carina (2 or less cm) occurred in another 13%. While unilateral intubation is not immediately catastrophic, the resulting systemic hypoxemia and hypercapnia are aggravated by potential accompanying injury (eg, lung contusion, hematothorax, pneumothorax, shock, or cerebrocranial trauma), which can lead to secondary damage (eg, acute respiratory insufficiency, ischemic brain damage). Evaluation of the depth of tube insertion with the aid of common clinical techniques is particularly unreliable in the case of thoracic trauma, aspiration, or previously existing pulmonary disease. Suggested measures for prevention of endobronchial intubation are improved and intensified training of emergency staff to increase awareness of and prevent the catastrophic effects of endobronchial malposition of the tube tip, tube shortening before intubation, assessment of insertion depth by checking length scale on the tube, and avoidance of patient head and neck movement.

Adolescent↗
PubMed1996

Esophageal detector device versus detection of end-tidal carbon dioxide level in emergency intubation.

STUDY OBJECTIVES: To confirm the ability of the esophageal detector device (EDD) to indicate positioning of endotracheal tubes (ETTs) in patients intubated under emergency conditions and to compare the performance of the EDD with that of end-tidal carbon dioxide (ETCO2). METHODS: This single-subject study comprising a prospective case series was conducted in the emergency department of an urban university hospital. All adult patients were intubated either in the ED or by paramedics in the field. ETT position was initially evaluated by means of auscultation, then EDD, and, finally, spectrographic qualitative ETCO2 monitoring in each patient. Discrepancies between the EDD and ETCO2 results were resolved by means of direct laryngoscopy. RESULTS: In 100 intubated patients, both the EDD and ETCO2 monitoring detected the single esophageal intubation that occurred. Of the remaining 99 tracheal intubations, the EDD correctly indicated tracheal placement in 98 (sensitivity, 99%) and was indeterminate in 1 case because of blockage of the ETT by secretions resulting from pulmonary edema. By comparison, ETCO2 monitoring correctly indicated tracheal placement in 86 cases (sensitivity, 87%) and was incorrect in 13 cases (P < .01). ETCO2 monitoring failed in 2 patients with pulmonary edema and in 11 patients with cardiac arrest. Among the 37 patients in the cardiac arrest group, the EDD correctly indicated ETT placement in 37 patients (sensitivity, 100%). In contrast, ETCO2 monitoring correctly indicated ETT placement in 26 patients (sensitivity, 70%; P < .01). CONCLUSION: The EDD reliably confirms tracheal intubation in the emergency patient population. The EDD is more accurate than ETCO2 monitoring in the overall emergency patient population because of its greater accuracy in cardiac arrest patients. [Bozeman WP, Hexter D, Liang HK, Kelen GD: Esophageal detector device versus detection of end-tidal carbon dioxide level in emergency intubation.

Adolescent↗
PubMed2002

Low chance of survival among patients requiring adrenaline (epinephrine) or intubation after out-of-hospital cardiac arrest in Sweden.

AIM: To relate the outcome of out-of-hospital cardiac arrest to whether medication with adrenaline (epinephrine) was given and whether patients were intubated. PATIENTS: A national survey in Sweden between 1990-1995 among patients suffering out-of-hospital cardiac arrest and in whom resuscitation was attempted. Sixty per cent of ambulance organisations in Sweden participated. DESIGN: Prospective evaluation. Survival was defined as survival 1 month after cardiac arrest. RESULTS: In all, 14065 patients were included in the evaluation. Of these, resuscitation was attempted in 10966 cases. Among these adrenaline (epinephrine) was given in 42.4 and 47.5% were intubated. In an univariate analysis treatment with adrenaline (epinephrine) and intubation was associated with a lower survival when all patients were evaluated. In a multivariate analysis including age, sex, place of arrest, bystander-CPR, initial arrhythmia, arrest being witnessed and aetiology, treatment with adrenaline (epinephrine) (OR 0.43, CI 0.27-0.66) and intubation (OR 0.71, CI 0.51-0.99) were both independent predictors of a lower chance of survival. When separately analysing patients with bystander witnessed cardiac arrest found in ventricular fibrillation and requiring more than 3 defibrillatory shocks neither treatment with adrenaline (epinephrine) nor intubation was associated with survival. Among patients with a non-shockable rhythm treatment with adrenaline (epinephrine) was a significant independent predictor for lower survival (OR 0.30, CI 0.07-0.82). CONCLUSION: In a national survey in Sweden including 10966 cases of out-of-hospital cardiac arrest the outcome was related to whether medication with adrenaline (epinephrine) was given and whether patients were intubated. Neither in total nor in any subgroup did we find results indicating beneficial effects of any of these two interventions. Whether treatment with adrenaline (epinephrine) or intubation will increase survival after out-of-hospital cardiac arrest needs to be confirmed in prospective randomised trials.

Adrenergic Agonists↗
PubMed1997

The use of TRISS methodology to validate prehospital intubation by urban EMS providers.

The purpose of this study was to determine the impact of field orotracheal intubation (OI) by urban emergency medical technician-paramedics (EMT-Ps) on outcome compared with trauma score and injury severity score (TRISS) expectations. The records of all trauma patients intubated by EMT-Ps or hospital personnel were abstracted for OI attempts/ successes, use of neuromuscular blockade (NMB), scene time, discharge neurological status, and hospital survival compared with TRISS. EMT-Ps attempted 43% of all intubations; 81% were successful versus 98% by hospital staff (P < .05). NMB was used by 76% of hospital intubations versus none by EMS (P < .05). Scene time was 10.3 +/- 3.2 minutes versus 11.6 +/- 2.1 for patients intubated by emergency medical services (EMS) and hospital staff (P < .05). Sixty percent of patients intubated by EMS versus 68% by hospital staff had good/moderate discharge neurological status. Survival for patients intubated by EMS versus hospital staff was 11% and 40%, respectively, compared with 2% and 45% expected by TRISS. Field OI by urban EMT-Ps has a favorable impact on survival with good neurological outcome (P < .05).

Adult↗
PubMed2000

Massive esophageal variceal hemorrhage triggered by complicated endotracheal intubation.

Esophageal variceal hemorrhage is frequently a catastrophic event. The specific events that trigger variceal rupture are not well understood. Acute elevations in systemic blood pressure and increased splanchnic blood flow, however, may lead to increased intravariceal pressure followed by variceal rupture and hemorrhage. This report describes a strong temporal association between complicated endotracheal intubation and abrupt onset of life-threatening variceal hemorrhage. A 52-year-old man with a history of portal hypertension was intubated emergently for airway protection because of respiratory insufficiency due to sepsis. Intubation was complicated by initial inadvertent esophageal intubation and by a peak mean arterial blood pressure of 155 mmHg. At the conclusion of the procedure, the patient sustained large volume hematemesis due to esophageal variceal rupture. This case suggests a risk of triggering variceal hemorrhage as a result of intubation-induced increase in blood pressure. A number of agents, including fentanyl, have been shown to be effective in attenuating the cardiovascular response to intubation. This case report provides strong evidence in support of administering fentanyl, or a suitable alternative adjunctive medication, before intubation of patients with documented portal hypertension and a history of esophageal variceal hemorrhage.

Disease Progression↗
PubMed1999

[Procedures use by French anesthetists in cases of difficult intubation and the impact of a conference of experts].

OBJECTIVE: To analyse the management of difficult intubation (DI) by French anaesthetists and the impact of the French experts' conference (EC) on this topic. STUDY DESIGN: Prospective, comparative, before/after study by questionnaire carried out in Aquitaine, Provence-Alpes-Côte d'Azur and Alsace-Lorraine. MATERIAL AND METHODS: A questionnaire on demographical data, detection of DI, management techniques and desiderata for continuing education on DI, was sent three months before the publication of the EC to 100 randomly selected anaesthetists, in each region (group PRE). Three months after the diffusion of the EC, the questionnaire completed by a survey on the impact of the EC was sent to 100 other randomly selected anaesthetists in each region (group POST). In the latter group, anaesthetists who considered the EC were compared to those who did not. RESULTS: The participation rate was 91% for the group PRE and 79% for the group POST respectively. Both groups were not significantly different for age, gender, position and seniority. Most used techniques that included blind nasal intubation (84%), intubation through laryngeal mask (82%), and intubation with fibrescope (53%). Demands for additional training were for translaryngeal ventilation (68%), intubation with fibrescope (64%), retrograde intubation (52%), and intubation through a laryngeal mask (46%). The EC was known by 71% of anaesthetists. In this group, the EC improved the assessment rate of the three recommended predictive criteria for DI from 12 to 28% (P < 0.02), but neither the management policy, nor the desiderata for additional training. CONCLUSION: Currently, the search of predictive indicators for DI is not systematically applied. The EC has only slightly modified the practice patterns. The need for additional training is important.

Anesthesiology↗