Drug-assisted intubation in the prehospital setting (resource document to NAEMSP position statement).
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Congresses as Topic↗
Biomedical subjects
Daniel P Davis
Publications and source records attributed to Daniel P Davis.
The safety and efficacy of prehospital needle and tube thoracostomy by aeromedical personnel.
BACKGROUND: Aeromedical crews routinely use needle thoracostomy (NT) and tube thoracostomy (TT) to treat major trauma victims (MTVs) with potential tension pneumothorax; however, the efficacy of prehospital NT and TT is unclear. OBJECTIVES: To explore the efficacy of aeromedical NT and TT in MTVs. METHODS: A retrospective chart review was performed using prehospital medical records and the county trauma registry over a seven-year period. All MTVs undergoing placement of NT or TT by aeromedical personnel were included; patients with incomplete data were excluded. Descriptive statistics were used to report the incidence of air release, clinical improvement (improved breath sounds or compliance if intubated, decreased dyspnea if nonintubated), and vital signs improvements (systolic blood pressure [SBP] increase to =90 mm Hg or increase by 5 mm Hg if < 90 mm Hg; heart rate improvement to 60-100 beats/min, increase by 10 beats/min if < 60 BPM, or decrease by 10 beats/min if > 100 beats/min; oxygen saturation increase if < 95%) for both NT and TT as documented in prehospital medical records. Survival and improvement in SBP based on trauma registry data were recorded for patients stratified by initial SBP. RESULTS: A total of 136 procedures (89 NTs and 47 TTs) in 81 patients were identified using prehospital medical records over a four-year period. Response rates to NT (60% overall, 32% vital signs) and TT (75% overall, 60% vital signs) were high. Vital signs improvements were observed more often in patients with a pulse and in nonintubated patients. A total of 168 patients were identified in the trauma registry over the seven-year study period. Normalization of SBP was observed in two-thirds of patients with a field SBP = 90 mm Hg and one-third of patients in whom field SBP could not be obtained. A small but significant proportion of patients undergoing prehospital NT and TT, including some with prehospital hypotension and high injury severity, survived to hospital discharge. The incidence of complications was low. CONCLUSIONS: Aeromedical crews appear to appropriately select MTVs to undergo field NT or TT. A low incidence of complications and a small but significant group of unexpected survivors support continued use of this procedure by aeromedical personnel.
Aerospace Medicine↗
Predictors of intubation success and therapeutic value of paramedic airway management in a large, urban EMS system.
BACKGROUND: Endotracheal intubation (ETI) is commonly used by paramedics for definitive airway management. The predictors of success and therapeutic value with regard to oxygenation are not well studied. OBJECTIVES: 1) To explore the relationship between intubation success and perfusion status, Glasgow Coma Scale (GCS) score, and end-tidal carbon dioxide (EtCO2); 2) to describe the incidence of unrecognized esophageal intubations with use of continuous capnometry; and 3) to document the incremental benefit of invasive versus noninvasive airway management techniques in correcting hypoxemia. METHODS: This was a prospective, observational study conducted in a large urban emergency medical services system. Paramedics completed a telephone debriefing interview with quality assurance personnel following delivery of all patients in whom invasive airway management had been attempted. Continuous capnometry was used for confirmation of tube position in all patients. Descriptive statistics were used to document airway management performance, including first-attempt ETI success, overall ETI success, and Combitube insertion (CTI) success. In addition, the incidence of unrecognized esophageal intubation was recorded. The relationship between intubation success and perfusion status, GCS score, and initial EtCO2 value was explored using logistic regression. Finally, recorded SpO2 values and the incidence of hypoxemia (SpO2 < 90%) at baseline, following noninvasive airway maneuvers, and after invasive airway management were compared for perfusing patients. RESULTS: A total of 703 patients were enrolled over 12 months. First-attempt ETI success was 61%, and overall ETI success was 81%; invasive airway management (ETI or CTI) was unsuccessful in 11% of patients. A single unrecognized esophageal intubation was observed (0.1%). A clear relationship between airway management success and perfusion status, GCS score, and initial EtCO2 value was observed. Only EtCO2 demonstrated an independent association with ETI success after adjusting for the other variables. Significant improvements in mean SpO2 and the incidence of hypoxemia over baseline were observed with both noninvasive and invasive airway management techniques in 168 perfusing patients. CONCLUSIONS: A relationship between intubation success and perfusion status, GCS score, and initial EtCO2 value was observed. Capnometry was effective in eliminating unrecognized esophageal intubations. Both noninvasive and invasive airway management strategies were effective in increasing SpO2 values and decreasing the incidence of hypoxemia, with additional benefit observed with invasive airway maneuvers in some patients.
California↗
Paramedic self-reported medication errors.
BACKGROUND: Continuing quality improvement (CQI) reviews reflect that medication administration errors occur in the prehospital setting. These include errors involving dose, medication, route, concentration, and treatment. METHODS: A survey was given to paramedics in San Diego County. The survey tool was established based on previous literature reviews and questions developed based on previous CQI data. RESULTS: A total of 352 surveys were returned, with the paramedics reporting a mean of 8.5 years of field experience. They work an average of 11.0 shifts/month with an average shift length of 25.4 hours and 6.7 calls/shift. Thirty-two responding paramedics (9.1%) reported committing a medication error in the past 12 months. Types of errors included dose-related errors (63%), protocol errors (33%), wrong route errors (21%), and wrong medication errors (4%). Issues identified in contributing to the errors include failure to triple check, infrequent use of the medication, dosage calculation error, and incorrect dosage given. Fatigue, training, and equipment setup of the drug box were not listed as any of the contributing factors. The majority of these errors were self-reported to their CQI representative (79.1%), with 8.3% reported by the base hospital radio nurse, 8.3% found on chart review, and 4.2% noted by the paramedic during the call but never reported. CONCLUSIONS: Nine percent of paramedics responding to an anonymous survey reported medication errors in the past 12 months, with 4% of these errors never having been reported in the CQI process. Additional safeguards must continue to be implemented to decrease the incidence of medication errors.
Adult↗
Paramedic rapid sequence intubation for severe traumatic brain injury: perspectives from an expert panel.
Although early intubation has become standard practice in the prehospital management of severe traumatic brain injury (TBI), many patients cannot be intubated without neuromuscular blockade. Several emergency medical services (EMS) systems have implemented paramedic rapid sequence intubation (RSI) protocols, with published reports documenting apparently conflicting outcomes effects. In response, the Brain Trauma Foundation assembled a panel of experts to interpret the existing literature regarding paramedic RSI for severe TBI and offer guidance for EMS systems considering adding this skill to the paramedic scope of practice. The interpretation of this panel can be summarized as follows: (1) the existing literature regarding paramedic RSI is inconclusive, and apparent differences in outcome can be explained by use of different methodologies and variability in comparison groups; (2) the use of Glasgow Coma Scale score alone to identify TBI patients requiring RSI is limited, with additional research needed to refine our screening criteria; (3) suboptimal RSI technique as well as subsequent hyperventilation may account for some of the mortality increase reported with the procedure; (4) initial and ongoing training as well as experience with RSI appear to affect performance; and (5) the success of a paramedic RSI program is dependent on particular EMS and trauma system characteristics.
Brain Injuries↗
Paramedic self-reported medication errors.
BACKGROUND: Continuing quality improvement (CQI) reviews reflect that medication administration errors occur in the prehospital setting. These include errors involving dose, medication, route, concentration, and treatment. METHODS: A survey was given to paramedics in San Diego County. The survey tool was established on the basis of previous literature reviews and questions developed with previous CQI data. RESULTS: A total of 352 surveys were returned, with the paramedics reporting a mean of 8.5 years of field experience. They work an average of 11.0 shifts/month with an average of 25.4 hours and 6.7 calls/shift. Thirty-two (9.1%) responding paramedics reported committing a medication error in the last 12 months. Types of errors included dose-related errors (63%), protocol errors (33%), wrong route errors (21%), and wrong medication errors (4%). Issues identified in contributing to the errors include failure to triple check, infrequent use of the medication, dosage calculation error, and incorrect dosage given. Fatigue, training, and equipment setup of the drug box were not listed as any of the contributing factors. The majority of these errors were self-reported to their CQI representative (79.1%), with 8.3% being reported by the base hospital radio nurse, 8.3% found upon chart review, and 4.2% noted by paramedic during call but never reported. CONCLUSIONS: Nine percent of paramedics responding to an anonymous survey report medication errors in the last 12 months, with 4% of these errors never having been reported in the CQI process. Additional safeguards must continue to be implemented to decrease the incidence of medication errors.
California↗
Adult foreign body airway obstruction in the prehospital setting.
BACKGROUND: Although the treatment of foreign body airway obstruction in adults has been well studied, few data exist on the characterization of prehospital experiences. OBJECTIVES: To describe the frequency, etiologies, and treatments of foreign body airway obstruction in adults in the prehospital setting and to discuss the relative efficacies of treatments and presenting factors that predict overall patient outcome. METHODS: A San Diego County prehospital database was retrospectively reviewed for all adult patients over a 17-month period with data extracted on demographic characteristics, incident outcome, patient disposition, item involved in obstruction, location of episode, initial vital signs, initial level of consciousness, pertinent medical history, treatments initiated by bystanders and paramedics, and response to those treatments. RESULTS: During the study period, there were 513 cases of foreign body airway obstruction in adults. Of these, 17 (3.3%) died. The mean age was 65.0 years, with increasing age correlating with worse outcome. The item causing obstruction varied widely, with medications and meat being the most common items. The Heimlich maneuver was the most commonly used intervention, with an 86.5% rate of patient improvement. Magill forceps proved useful for three cases refractory to the Heimlich maneuver. Presenting vital sign aberrations, particularly with respiratory rate, correlated with poorer patient outcome. CONCLUSIONS: Foreign body airway obstruction represents a true emergency in adults, with a 3.3% mortality rate in the current study. The Heimlich maneuver was used frequently and with good success.
Adolescent↗
The effectiveness of a novel, algorithm-based difficult airway curriculum for air medical crews using human patient simulators.
INTRODUCTION: Airway management is one of the most important skills possessed by flight crews. However, few data exist about the efficacy of various educational approaches. Traditional models for airway training, including cadaver labs, operating room exposure, and clinical apprenticeships, are scarce and offer variable educational quality. The objective of this analysis was to evaluate the effectiveness of a simulator-based difficult airway curriculum in a large, aeromedical company. METHODS: Simulation training was integrated into existing airway training for all crew members; an original difficult airway algorithm was used to guide scenarios. To evaluate its effectiveness, rapid sequence intubation (RSI) success before and after curriculum implementation was determined. In addition, crew members rated their confidence with various aspects of airway management before and after exposure to the airway workshops. RESULTS: First attempt and overall ETI success improved from 71.3% and 89.3% before (n=261) to 87.5% and 94.6% after (n=504) implementation of the algorithm and simulation training, whereas the incidence of hypoxic arrests during RSI decreased from 2.7% to 0.2% (p<0.01 for all comparisons). Crew members reported improvements in confidence with regard to all aspects of airway management following participation in the simulation workshops. CONCLUSIONS: A novel, integrated airway management curriculum using treatment algorithms and simulation appeared to be effective for improving RSI success among air medical crews in this program.
Air Ambulances↗
Quantitative capnometry as a critical resuscitation tool.
Capnometry is a useful tool for emergency airway and ventilation management. Advantages include high sensitivity and specificity with regard to ET tube placement and the ability to provide continuous data throughout the initial resuscitation. Ultimately the ability of capnometry to guide ventilation and even chest compressions may be its most important contribution to the care of critically ill and injured patients.
Capnography↗
Prehospital rapid-sequence intubation--what does the evidence show? Proceedings from the 2004 National Association of EMS Physicians annual meeting.
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Emergency Medical Services↗