Study Results
Results pending
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Basic Information
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Recruitment Status
COMPLETED
Clinical Phase
NA
Total Enrollment
54 participants
Study Classification
INTERVENTIONAL
Study Start Date
2018-07-01
Study Completion Date
2019-03-11
Brief Summary
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Regurgitation is an adverse event common during cardiopulmonary resuscitation (CPR) and occurs in 20%-32% of patients experiencing out-of-hospital cardiac arrest (OHCA). It can impair ventilation, induce aspiration, and decrease survival to hospital discharge. Gastric fluid in the airway obscures the laryngeal view, thereby considerably decreasing the first-pass success of endotracheal intubation (ETI) by paramedics.
A human cadaver study reported that ETI outperforms other airway management devices, such as the i-gel, laryngeal mask, and laryngeal tube, in preventing aspiration when regurgitation occurs during CPR. However, ETI is also associated with multiple and prolonged CPR pauses.Compared with the use of supraglottic airway (SGA) devices, ETI results in more hands-off time during CPR. Recent randomised clinical trials have revealed that airway management with an SGA device provides superior outcomes to those of ETI in patients with OHCA. However, ETI remains the preferred management strategy for an airway affected by regurgitation in patients with OHCA.
Current guidelines focus on the quality of CPR because it is a key determinant of survival in patients with OHCA. However, evidence regarding the impact of regurgitation during ETI on CPR quality is limited. This manikin simulation study assessed CPR quality during ETI in airways with and without regurgitation.
A human cadaver study reported that ETI outperforms other airway management devices, such as the i-gel, laryngeal mask, and laryngeal tube, in preventing aspiration when regurgitation occurs during CPR. However, ETI is also associated with multiple and prolonged CPR pauses.Compared with the use of supraglottic airway (SGA) devices, ETI results in more hands-off time during CPR. Recent randomised clinical trials have revealed that airway management with an SGA device provides superior outcomes to those of ETI in patients with OHCA. However, ETI remains the preferred management strategy for an airway affected by regurgitation in patients with OHCA.
Current guidelines focus on the quality of CPR because it is a key determinant of survival in patients with OHCA. However, evidence regarding the impact of regurgitation during ETI on CPR quality is limited. This manikin simulation study assessed CPR quality during ETI in airways with and without regurgitation.
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Detailed Description
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This is a prospective compare study. 54 EMT-Ps, are involved to evaluate the impact of airway management on CPR quality.
The Study uses SALAD training tool for training. The SALAD training tool include Nasco Intubation CPR manikin, which could vomit by pumping liquid into distal esophagus, and HQCPR feedback machine. Two scenarios were simulated. CPR and ETI in an airway with regurgitation (oropharyngeal regurgitation scenario) and CPR and ETI in an airway without regurgitation (clean airway scenario). All EMT-Ps were randomly assigned to participate initially in one of the scenarios. After all EMT-Ps had finished the first scenario, they switched to the other. Three EMT-Ps formed a resuscitation team and played one of the following roles: airway manager, first compressor, or second compressor. In each scenario, each EMT-P was required to take a turn playing all three roles. During each simulation, the airway manager performed BVM ventilation, and the first and second compressors alternately provided chest compression for every five cycles of CPR, with a compression-to-ventilation ratio of 30:2 .
After the first five cycles of CPR, the airway manager was asked to perform intubation during the ongoing chest compression to minimise intubation-associated interruption of chest compression. If necessary, the airway manager could request a pause of the ongoing chest compression. If intubation was not successful, the airway manager performed BVM ventilation twice and then reattempt intubation. After intubation, the airway manager used the BVM to check the lung distention to confirm successful intubation. Each simulation was ended after successful or failed intubation. Failed intubation was defined as either oesophageal intubation or three unsuccessful attempts.
The primary outcomes was chest compression fraction (CCF). The secondary outcomes was the intubation success rate. Chest compression depth, chest compression rate, and longest interruption time, and intubation time were also recorded.
Each CPR-intubation sequence comprised two segments: a compression segment and a hands-off segment. CCF was defined as the proportion of time spent on chest compression in each CPR-intubation sequence. The longest interruption time was defined as the longest hands-off duration in each sequence. An intubation attempt was defined as the insertion of the laryngoscope blade into the mouth and its subsequent withdrawal from the mouth. Intubation time was defined as the period between the start and the end of an intubation attempt. The time spent checking the endotracheal tube position by manual ventilation through the endotracheal tube was not included in the CPR-intubation sequence.
Two video cameras were setup to record the entire simulation process. Two observers reviewed the video records independently to identify the start and end of each CPR-intubation sequence, any intubation attempts, and the hands-off and compression segments of each sequence. Disagreements were resolved by reaching mutual consensus. The HQCPR application on an Android device recorded chest compression depth, rate, and interruptions (defined as no chest compression \[hands off\] for \>1 s). The data from both the video recording and the HQCPR application were used in subsequent analysis.Continuous data are presented as medians with interquartile ranges, and categorical data are presented as frequency counts and percentages. The continuous data were compared using the Wilcoxon rank sum test in the first CPR-intubation sequence and the Mann-Whitney U test in the second and third sequences. The McNemar test was used to compare the intubation success rate in the first sequence, and Pearson's chi-square test was used for the second and third sequences. The continuous data from all three CPR-intubation sequences were compared using the Kruskal-Wallis test. Post hoc analysis was performed using Conover's test.
The association of CPR quality metrics with successful intubation was evaluated using a Cox proportional hazards regression model. The results of multivariate analyses are presented as hazard ratios (HRs) with corresponding 95% confidence intervals (CIs). A two-tailed P \<0.05 indicates statistical significance. MedCalc Statistical Software version 19.2. (MedCalc Software, Ostend, Belgium) was used for data analysis.
The Study uses SALAD training tool for training. The SALAD training tool include Nasco Intubation CPR manikin, which could vomit by pumping liquid into distal esophagus, and HQCPR feedback machine. Two scenarios were simulated. CPR and ETI in an airway with regurgitation (oropharyngeal regurgitation scenario) and CPR and ETI in an airway without regurgitation (clean airway scenario). All EMT-Ps were randomly assigned to participate initially in one of the scenarios. After all EMT-Ps had finished the first scenario, they switched to the other. Three EMT-Ps formed a resuscitation team and played one of the following roles: airway manager, first compressor, or second compressor. In each scenario, each EMT-P was required to take a turn playing all three roles. During each simulation, the airway manager performed BVM ventilation, and the first and second compressors alternately provided chest compression for every five cycles of CPR, with a compression-to-ventilation ratio of 30:2 .
After the first five cycles of CPR, the airway manager was asked to perform intubation during the ongoing chest compression to minimise intubation-associated interruption of chest compression. If necessary, the airway manager could request a pause of the ongoing chest compression. If intubation was not successful, the airway manager performed BVM ventilation twice and then reattempt intubation. After intubation, the airway manager used the BVM to check the lung distention to confirm successful intubation. Each simulation was ended after successful or failed intubation. Failed intubation was defined as either oesophageal intubation or three unsuccessful attempts.
The primary outcomes was chest compression fraction (CCF). The secondary outcomes was the intubation success rate. Chest compression depth, chest compression rate, and longest interruption time, and intubation time were also recorded.
Each CPR-intubation sequence comprised two segments: a compression segment and a hands-off segment. CCF was defined as the proportion of time spent on chest compression in each CPR-intubation sequence. The longest interruption time was defined as the longest hands-off duration in each sequence. An intubation attempt was defined as the insertion of the laryngoscope blade into the mouth and its subsequent withdrawal from the mouth. Intubation time was defined as the period between the start and the end of an intubation attempt. The time spent checking the endotracheal tube position by manual ventilation through the endotracheal tube was not included in the CPR-intubation sequence.
Two video cameras were setup to record the entire simulation process. Two observers reviewed the video records independently to identify the start and end of each CPR-intubation sequence, any intubation attempts, and the hands-off and compression segments of each sequence. Disagreements were resolved by reaching mutual consensus. The HQCPR application on an Android device recorded chest compression depth, rate, and interruptions (defined as no chest compression \[hands off\] for \>1 s). The data from both the video recording and the HQCPR application were used in subsequent analysis.Continuous data are presented as medians with interquartile ranges, and categorical data are presented as frequency counts and percentages. The continuous data were compared using the Wilcoxon rank sum test in the first CPR-intubation sequence and the Mann-Whitney U test in the second and third sequences. The McNemar test was used to compare the intubation success rate in the first sequence, and Pearson's chi-square test was used for the second and third sequences. The continuous data from all three CPR-intubation sequences were compared using the Kruskal-Wallis test. Post hoc analysis was performed using Conover's test.
The association of CPR quality metrics with successful intubation was evaluated using a Cox proportional hazards regression model. The results of multivariate analyses are presented as hazard ratios (HRs) with corresponding 95% confidence intervals (CIs). A two-tailed P \<0.05 indicates statistical significance. MedCalc Statistical Software version 19.2. (MedCalc Software, Ostend, Belgium) was used for data analysis.
Conditions
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Airway Aspiration
Cardiopulmonary Arrest
Study Design
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Allocation Method
RANDOMIZED
Intervention Model
CROSSOVER
Two scenarios were simulated. CPR and ETI in an airway with regurgitation (oropharyngeal regurgitation scenario) and CPR and ETI in an airway without regurgitation (clean airway scenario). All EMT-Ps were assigned to participate initially in one of the scenarios. After all EMT-Ps had finished the first scenario, they switched to the other.
Primary Study Purpose
HEALTH_SERVICES_RESEARCH
Blinding Strategy
SINGLE
Participants
Study Groups
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clean airway
CPR and endotracheal intubation in an airway without regurgitation
Group Type
NO_INTERVENTION
No interventions assigned to this group
regurgitation airway
CPR and endotracheal intubation in an airway with regurgitation
Group Type
EXPERIMENTAL
SALAD simulation device
Intervention Type
DEVICE
An airway CPR manikin was modified to simulate regurgitation during CPR . A manual pump was fixed on the bottom of the torso to simulate the stomach. A clear vinyl tube was connected the manikin's oesophagus and the outflow port of the pump. A water container outside the manikin was filled with simulated gastric content and connected to the inflow port of the pump through another vinyl tube. The manikin's left main bronchus was occluded using a red cap provided by the manufacturer. The lung was simulated by an anaesthesia breathing bag placed outside the manikin and connected to the manikin's right main bronchus via a breathing circuit. A compression pad was attached to the bottom of the manikin's compression plate. During chest compression, the compression pad squeezed the pump to regurgitate gastric contents into the oropharynx
Interventions
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SALAD simulation device
An airway CPR manikin was modified to simulate regurgitation during CPR . A manual pump was fixed on the bottom of the torso to simulate the stomach. A clear vinyl tube was connected the manikin's oesophagus and the outflow port of the pump. A water container outside the manikin was filled with simulated gastric content and connected to the inflow port of the pump through another vinyl tube. The manikin's left main bronchus was occluded using a red cap provided by the manufacturer. The lung was simulated by an anaesthesia breathing bag placed outside the manikin and connected to the manikin's right main bronchus via a breathing circuit. A compression pad was attached to the bottom of the manikin's compression plate. During chest compression, the compression pad squeezed the pump to regurgitate gastric contents into the oropharynx
Intervention Type
DEVICE
Eligibility Criteria
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Inclusion Criteria
* emergency medical technician-paramedics experienced in advanced airway management and CPR
Exclusion Criteria
* NA
Eligible Sex
ALL
Accepts Healthy Volunteers
Yes
Sponsors
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Shin Kong Wu Ho-Su Memorial Hospital
OTHER
Sponsor Role
lead
Responsible Party
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Responsibility Role
SPONSOR
Locations
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Shinkong Wu-Ho-Su memorial hospital
Taipei, Shih-Lin, Taiwan
Site Status
Countries
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Taiwan
References
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BACKGROUND
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Reference Type
BACKGROUND
Ruetzler K, Gruber C, Nabecker S, Wohlfarth P, Priemayr A, Frass M, Kimberger O, Sessler DI, Roessler B. Hands-off time during insertion of six airway devices during cardiopulmonary resuscitation: a randomised manikin trial. Resuscitation. 2011 Aug;82(8):1060-3. doi: 10.1016/j.resuscitation.2011.03.027. Epub 2011 Apr 6.
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BACKGROUND
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BACKGROUND
Voss S, Rhys M, Coates D, Greenwood R, Nolan JP, Thomas M, Benger J. How do paramedics manage the airway during out of hospital cardiac arrest? Resuscitation. 2014 Dec;85(12):1662-6. doi: 10.1016/j.resuscitation.2014.09.008. Epub 2014 Sep 26.
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BACKGROUND
Nolan JP, Maconochie I, Soar J, Olasveengen TM, Greif R, Wyckoff MH, Singletary EM, Aickin R, Berg KM, Mancini ME, Bhanji F, Wyllie J, Zideman D, Neumar RW, Perkins GD, Castren M, Morley PT, Montgomery WH, Nadkarni VM, Billi JE, Merchant RM, de Caen A, Escalante-Kanashiro R, Kloeck D, Wang TL, Hazinski MF. Executive Summary: 2020 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations. Circulation. 2020 Oct 20;142(16_suppl_1):S2-S27. doi: 10.1161/CIR.0000000000000890. Epub 2020 Oct 21. No abstract available.
Reference Type
BACKGROUND
Meaney PA, Bobrow BJ, Mancini ME, Christenson J, de Caen AR, Bhanji F, Abella BS, Kleinman ME, Edelson DP, Berg RA, Aufderheide TP, Menon V, Leary M; CPR Quality Summit Investigators, the American Heart Association Emergency Cardiovascular Care Committee, and the Council on Cardiopulmonary, Critical Care, Perioperative and Resuscitation. Cardiopulmonary resuscitation quality: [corrected] improving cardiac resuscitation outcomes both inside and outside the hospital: a consensus statement from the American Heart Association. Circulation. 2013 Jul 23;128(4):417-35. doi: 10.1161/CIR.0b013e31829d8654. Epub 2013 Jun 25.
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DuCanto J, Serrano KD, Thompson RJ. Novel Airway Training Tool that Simulates Vomiting: Suction-Assisted Laryngoscopy Assisted Decontamination (SALAD) System. West J Emerg Med. 2017 Jan;18(1):117-120. doi: 10.5811/westjem.2016.9.30891. Epub 2016 Nov 8.
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Root CW, Mitchell OJL, Brown R, Evers CB, Boyle J, Griffin C, West FM, Gomm E, Miles E, McGuire B, Swaminathan A, St George J, Horowitz JM, DuCanto J. Suction Assisted Laryngoscopy and Airway Decontamination (SALAD): A technique for improved emergency airway management. Resusc Plus. 2020 May 21;1-2:100005. doi: 10.1016/j.resplu.2020.100005. eCollection 2020 Mar-Jun.
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Christenson J, Andrusiek D, Everson-Stewart S, Kudenchuk P, Hostler D, Powell J, Callaway CW, Bishop D, Vaillancourt C, Davis D, Aufderheide TP, Idris A, Stouffer JA, Stiell I, Berg R; Resuscitation Outcomes Consortium Investigators. Chest compression fraction determines survival in patients with out-of-hospital ventricular fibrillation. Circulation. 2009 Sep 29;120(13):1241-7. doi: 10.1161/CIRCULATIONAHA.109.852202. Epub 2009 Sep 14.
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Rea T, Olsufka M, Yin L, Maynard C, Cobb L. The relationship between chest compression fraction and outcome from ventricular fibrillation arrests in prolonged resuscitations. Resuscitation. 2014 Jul;85(7):879-84. doi: 10.1016/j.resuscitation.2014.02.026. Epub 2014 Mar 4.
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Vaillancourt C, Petersen A, Meier EN, Christenson J, Menegazzi JJ, Aufderheide TP, Nichol G, Berg R, Callaway CW, Idris AH, Davis D, Fowler R, Egan D, Andrusiek D, Buick JE, Bishop TJ, Colella MR, Sahni R, Stiell IG, Cheskes S; Resuscitation Outcomes Consortium Investigators.. The impact of increased chest compression fraction on survival for out-of-hospital cardiac arrest patients with a non-shockable initial rhythm. Resuscitation. 2020 Sep;154:93-100. doi: 10.1016/j.resuscitation.2020.06.016. Epub 2020 Jun 20.
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Sorour K, Donovan L. Intentional esophageal intubation to improve visualization during emergent endotracheal intubation in the context of massive vomiting: a case report. J Clin Anesth. 2015 Mar;27(2):168-9. doi: 10.1016/j.jclinane.2014.07.004. Epub 2015 Jan 7.
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Lin LW, Huang CC, Ong JR, Chong CF, Wu NY, Hung SW. The suction-assisted laryngoscopy assisted decontamination technique toward successful intubation during massive vomiting simulation: A pilot before-after study. Medicine (Baltimore). 2019 Nov;98(46):e17898. doi: 10.1097/MD.0000000000017898.
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Pilbery R, Teare MD. Soiled airway tracheal intubation and the effectiveness of decontamination by paramedics (SATIATED): a randomised controlled manikin study. Br Paramed J. 2019 Jun 1;4(1):14-21. doi: 10.29045/14784726.2019.06.4.1.14.
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BACKGROUND
Lin LW, DuCanto J, Hsu CY, Su YC, Huang CC, Hung SW. Compromised cardiopulmonary resuscitation quality due to regurgitation during endotracheal intubation: a randomised crossover manikin simulation study. BMC Emerg Med. 2022 Jul 9;22(1):124. doi: 10.1186/s12873-022-00662-0.
Reference Type
DERIVED
Provided Documents
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Document Type: Study Protocol
Other Identifiers
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20180503R
Identifier Type: -
Identifier Source: org_study_id
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