Tension Hemopneumothorax in the Setting of Mechanical CPR during Prehospital Cardiac Arrest

High-quality cardiopulmonary resuscitation (CPR) is a key element in out-of-hospital cardiac arrest (OHCA) resuscitation. Mechanical CPR devices have been developed to provide uninterrupted and high-quality CPR. Although human studies have shown controversial results in favor of mechanical CPR devices, their application in pre-hospital settings continues to increase. There remains scant data on the pre-hospital use of mechanical CPR devices in Asia. Therefore, we conducted a retrospective cohort study between September 2018 and August 2020 in an urban city of Taiwan to analyze the effects of mechanical CPR devices on the outcomes of OHCA; the primary outcome was attainment of return of spontaneous circulation (ROSC). Of 552 patients with OHCA, 279 received mechanical CPR and 273 received manual CPR, before being transferred to the hospital. After multivariate adjustment for the influencing factors, mechanical CPR was independently associated with achievement of any ROSC (OR = 1.871; 95%CI:1.195–2.930) and sustained (≥24 h) ROSC (OR = 2.353; 95%CI:1.427–3.879). Subgroup analyses demonstrated that mechanical CPR is beneficial in shorter emergency medical service response time (≤4 min), witnessed cardiac arrest, and non-shockable cardiac rhythm. These findings support the importance of early EMS activation and high-quality CPR in OHCA resuscitation.

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Journal club: The use of the esophageal obturator airway versus the endotracheal tube in prehospital cardiac arrest

The American Journal of Emergency Medicine ◽

10.1016/0735-6757(87)90308-1 ◽

1987 ◽

Vol 5 (1) ◽

pp. 79-84

Author(s):

Howard A. Werman ◽

Eric A. Davis ◽

Douglas A. Rund ◽

Gregory P. Hess ◽

Frank Birinyi ◽

...

Keyword(s):

Cardiac Arrest ◽

Endotracheal Tube ◽

Journal Club ◽

Prehospital Cardiac Arrest

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The frequency of ‘Occult’ ventricular fibrillation masquerading as a flat line in prehospital cardiac arrest

Annals of Emergency Medicine ◽

10.1016/s0196-0644(88)80561-4 ◽

1988 ◽

Vol 17 (8) ◽

pp. 813-817 ◽

Cited By ~ 24

Author(s):

Richard O Cummins ◽

Douglas Austin

Keyword(s):

Cardiac Arrest ◽

Ventricular Fibrillation ◽

Prehospital Cardiac Arrest

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Association of obesity with worsened prehospital cardiac arrest

Journal of Nutritional & Environmental Medicine ◽

10.1080/13590840500191596 ◽

2005 ◽

Vol 15 (1) ◽

pp. 1-8

Author(s):

Rade B. Vukmir

Keyword(s):

Cardiac Arrest ◽

Prehospital Cardiac Arrest

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Abstract 138: A Before and After Study of Active Compression Decompression Cardiopulmonary Resuscitation With the Impedance Threshold Device in a Large Urban Pre-Hospital System

Circulation ◽

10.1161/circ.138.suppl_2.138 ◽

2018 ◽

Vol 138 (Suppl_2) ◽

Author(s):

Johanna C Moore ◽

Michael Grahl ◽

Tracy Marko ◽

Ariel Blythe-Reske ◽

Amber Lage ◽

...

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Response Time ◽

First Responders ◽

The United States ◽

Threshold Device ◽

Before And After ◽

Mechanical Cpr ◽

Impedance Threshold Device ◽

Before And After Study

Introduction: Active Compression Decompression cardiopulmonary resuscitation with an impedance threshold device (ACD+ITD CPR) is available for use in the United States. However, little is known regarding integration of this CPR system into a large urban prehospital system with short response times, routine use of mechanical CPR and ITD, and transport of patients to cardiac arrest centers. This is an ongoing before and after study of the implementation of ACD+ITD CPR in non-traumatic cardiac arrest cases 6 months pre and post protocol change. Hypothesis: Neurologically intact rates of survival, defined by Cerebral Performance Category (CPC) score of 1 or 2, would be higher post protocol. Methods: Basic life support first responders (n = 420) and paramedics (n = 207) underwent training including didactic and hands-on sessions to learn ACD+ITD CPR. The protocol included ACD+ITD CPR initially, with the option to transition to mechanical CPR at 15 minutes. Demographics, response time, CPR duration, initial rhythm, signs of perfusion during CPR, and return of spontaneous circulation (ROSC) were recorded prospectively by first responders. Chart review was performed to determine survival to hospital admission and CPC score at discharge. Results: Training occurred October 2016 to March 2017, with protocol change on May 1, 2017. Cases from November 2016-April 2017 (n = 136) and May 2017-November 2017 (n= 103) were reviewed. Complete data were available for 128 subjects pre-protocol change (94%) and 96 subjects (94%) post. Age, gender, response time, rhythm, total CPR time, and rates of bystander CPR and witnessed arrest were similar between groups. Post protocol change, 87% (89/102) received ACD+ITD CPR with median ACD+ITD CPR time of 15 minutes (range 2-300). Pre-protocol, 6/128 (4.7%) subjects survived with CPC score 1 or 2, versus 8/96 (13.5%) subjects post (difference 8.8%, 95% CI 1%-17%). ROSC rates were similar (pre: 54/127, 42.5% post: 44/93, 47%, difference 4.8%, 95% CI -8% - 18%) Conclusions: The change in protocol was straightforward with a high rate of adherence of the system for the recommended duration of therapy. Results are suggestive of a higher rate of neurological survival with the routine use of ACD+ITD CPR in a small cardiac arrest patient population.

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Abstract 170: Challenges in Implementing an ECPR Program for Out of Hospital Cardiac Arrest

Circulation ◽

10.1161/circ.138.suppl_2.170 ◽

2018 ◽

Vol 138 (Suppl_2) ◽

Author(s):

Meshe Chonde ◽

Jeremiah Escajeda ◽

Jonathan Elmer ◽

Frank X Guyette ◽

Arthur Boujoukos ◽

...

Keyword(s):

Cardiac Arrest ◽

Inclusion Criteria ◽

Extracorporeal Cardiopulmonary Resuscitation ◽

Implementation Challenges ◽

Shockable Rhythm ◽

Bystander Cpr ◽

Stay And Play ◽

Load And Go ◽

Mechanical Cpr ◽

Hospital Cardiac Arrest

Introduction: Extracorporeal cardiopulmonary resuscitation (ECPR) can treat cardiac arrest refractory to conventional therapy. Many institutions are interested in developing their own ECPR program. However, there are challenges in logistics and implementation. Hypothesis: Development of an ECPR team and identification of UPMC Presbyterian as a receiving center will increase recognition of potential ECPR candidates. Methods: We developed an infrastructure of Emergency Medical Services (EMS), Medic Command, and an in-hospital ECPR team. We identified inclusion criteria for patients with an out of hospital cardiac arrest (OHCA) likely to have a reversible arrest etiology and developed them into a simple checklist. These criteria were: witnessed arrest with bystander CPR, shockable rhythm, and ages 18 to 60. We trained local EMS crews to screen patients and review the checklist with a Command Physician prior to transport to our hospital. Results: From October 2015 to March 31 st 2018, there were 1165 dispatches for OHCA, of which 664 (57%) were treated and transported to the hospital and 120 to our institution. Of these, five patients underwent ECPR. Of the remaining cases, 64 (53%) had nonshockable rhythms, 48 (40%) were unwitnessed arrests, 50 (42%) were over age 60 and the remaining 20 (17%) had no documented reasons for exclusion. Prehospital CPR duration was 26 [IQR 25-40] min. Four patients (80%) underwent mechanical CPR with LUCAS device. Time from arrest to arrive on scene was 5 [IQR 4-6] min and time call MD command was 13 [IQR 7-21] min. Time to transport was 20 [IQR 19-21] min. Time from arrest to initiation of ECMO was 63 [IQR 59-69] min. Conclusions: ECPR is a relatively infrequent occurrence. Implementation challenges include prompt identification of patients with reversible OHCA causes, preferential transport to an ECPR capable facility and changing the focus of EMS in these select patients from a “stay and play” to a “load and go” mentality.

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