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Mechanical chest compression

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https://www.readbyqxmd.com/read/28393757/prehospital-randomised-assessment-of-a-mechanical-compression-device-in-out-of-hospital-cardiac-arrest-paramedic-a-pragmatic-cluster-randomised-trial-and-economic-evaluation
#1
Simon Gates, Ranjit Lall, Tom Quinn, Charles D Deakin, Matthew W Cooke, Jessica Horton, Sarah E Lamb, Anne-Marie Slowther, Malcolm Woollard, Andy Carson, Mike Smyth, Kate Wilson, Garry Parcell, Andrew Rosser, Richard Whitfield, Amanda Williams, Rebecca Jones, Helen Pocock, Nicola Brock, John Jm Black, John Wright, Kyee Han, Gary Shaw, Laura Blair, Joachim Marti, Claire Hulme, Christopher McCabe, Silviya Nikolova, Zenia Ferreira, Gavin D Perkins
BACKGROUND: Mechanical chest compression devices may help to maintain high-quality cardiopulmonary resuscitation (CPR), but little evidence exists for their effectiveness. We evaluated whether or not the introduction of Lund University Cardiopulmonary Assistance System-2 (LUCAS-2; Jolife AB, Lund, Sweden) mechanical CPR into front-line emergency response vehicles would improve survival from out-of-hospital cardiac arrest (OHCA). OBJECTIVE: Evaluation of the LUCAS-2 device as a routine ambulance service treatment for OHCA...
March 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28385642/outcome-among-vf-vt-patients-in-the-linc-lucas-in-cardiac-arrest-trial-a-randomised-controlled-trial
#2
Bjarne Madsen Hardig, Erik Lindgren, Ollie Östlund, Johan Herlitz, Rolf Karlsten, Sten Rubertsson
INTRODUCTION: The LINC trial evaluated two ALS-CPR algorithms for OHCA patients, consisting of 3 minutes' mechanical chest compression (LUCAS) cycles with defibrillation attempt through compressions vs. 2 minutes' manual compressions with compression pause for defibrillation. The PARAMEDIC trial, using 2 minutes' algorithm found worse outcome for patients with initial VF/VT in the LUCAS group and they received more adrenalin compared to the manual group. We wanted to evaluate if these algorithms had any outcome effect for patients still in VF/VT after the initial defibrillation and how adrenalin timing impacted it...
April 3, 2017: Resuscitation
https://www.readbyqxmd.com/read/28381704/efficacy-of-precordial-percussion-pacing-assessed-in-a-cardiac-standstill-microminipig-model
#3
Takeshi Wada, Hiroshi Ohara, Yuji Nakamura, Xin Cao, Hiroko Izumi-Nakaseko, Kentaro Ando, Mitsuru Honda, Katsunori Yoshihara, Yuji Nakazato, Keith G Lurie, Atsushi Sugiyama
BACKGROUND: Potential cardiovascular benefits of precordial percussion pacing (PPP) during cardiac standstill are unknown.Methods and Results:A cardiac standstill model in amicrominipigwas created by inducing complete atrioventricular block with a catheter ablation technique (n=7). Next, the efficacy of cardiopulmonary resuscitation by standard chest compressions (S-CPR), PPP and ventricular electrical pacing in this model were analyzed in series (n=4). To assess the mechanism of PPP, a non-selective, stretch-activated channel blocker, amiloride, was administered during PPP (n=3)...
April 4, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28377296/mechanical-chest-compressions-improve-rate-of-return-of-spontaneous-circulation-and-allow-for-initiation-of-percutaneous-circulatory-support-during-cardiac-arrest-in-the-cardiac-catheterization-laboratory
#4
Joseph M Venturini, Elizabeth Retzer, J Raider Estrada, Janet Friant, David Beiser, Dana Edelson, Jonathan Paul, John Blair, Sandeep Nathan, Atman P Shah
BACKGROUND: Performing advanced cardiac life support (ACLS) in the cardiac catheterization laboratory (CCL) is challenging. Mechanical chest compression (MCC) devices deliver compressions in a small space, allowing for simultaneous percutaneous coronary intervention and reduced radiation exposure to rescuers. In refractory cases, MCC devices allow rescuers to initiate percutaneous mechanical circulatory support (MCS) and extracorporeal life support (ECLS) during resuscitation. This study sought to assess the efficacy and safety of MCC when compared to manual compressions in the CCL...
April 2, 2017: Resuscitation
https://www.readbyqxmd.com/read/28372525/acute-forces-required-for-fatal-compression-asphyxia-a-biomechanical-model-and-historical-comparisons
#5
Mark W Kroll, G Keith Still, Tom S Neuman, Michael A Graham, Lanny V Griffin
Background Fatalities from acute compression have been reported with soft-drink vending machine tipping, motor vehicle accidents, and trench cave-ins. A major mechanism of such deaths is flail chest but the amount of force required is unclear. Between the range of a safe static chest compression force of 1000 N (102 kg with earth gravity) and a lethal dynamic force of 10-20 kN (falling 450 kg vending machines), there are limited quantitative human data on the force required to cause flail chest, which is a major correlate of acute fatal compression asphyxia...
January 1, 2017: Medicine, Science, and the Law
https://www.readbyqxmd.com/read/28353609/assessing-practical-skills-in-cardiopulmonary-resuscitation-discrepancy-between-standard-visual-evaluation-and-a-mechanical-feedback-device
#6
Baltasar Sánchez González, Laura Martínez, Manel Cerdà, Enrique Piacentini, Josep Trenado, Salvador Quintana
This paper aims to analyze agreement in the assessment of external chest compressions (ECC) by 3 human raters and dedicated feedback software.While 54 volunteer health workers (medical transport technicians), trained and experienced in cardiopulmonary resuscitation (CPR), performed a complete sequence of basic CPR maneuvers on a manikin incorporating feedback software (Laerdal PC v 4.2.1 Skill Reporting Software) (L), 3 expert CPR instructors (A, B, and C) visually assessed ECC, evaluating hand placement, compression depth, chest decompression, and rate...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28321340/right-ventricular-compression-mimicking-brugada-like-electrocardiogram-in-a-patient-with-recurrent-pectus-excavatum
#7
Jinhee Ahn, Jong-Il Choi, Jaemin Shim, Sung Ho Lee, Young-Hoon Kim
Pectus excavatum (PE), the most common skeletal anomaly of chest wall, sometimes requires a surgical correction but recurrent PE is not uncommon. PE usually has a benign course; however, this chest deformity may be associated with symptomatic tachyarrhythmias due to mechanical compression. We report a case of a patient with recurrent PE after surgical correction presenting with palpitation and electrocardiogram (ECG) showing ST-segment elevation on the right precordial leads, which could be mistaken for a Brugada syndrome (BrS)...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28291665/cardiac-arrest-in-acute-myocardial-infarction-concept-of-circulatory-support-with-mechanical-chest-compression-and-impella-to-facilitate-percutaneous-coronary-intervention
#8
Kaleab N Asrress, Maciej Marciniak, Natalia Briceno, Divaka Perera
Cardiogenic shock in the context of acute ST-elevation myocardial infarction (STEMI) remains a challenge to manage and results in significant mortality and morbidity, cardiac arrest in this setting even more so. The increase in myocardial oxygen demand and consumption with the use of inotropes is recognised as increasing mortality. Alternatives include the intra-aortic balloon pump (IABP), which has yet to be shown to improve outcomes, and extracorporeal membrane oxygenation (ECMO), which requires super-specialised techniques not widely available...
February 28, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28274812/pediatric-cardiac-arrest-due-to-drowning-and-other-respiratory-etiologies-neurobehavioral-outcomes-in-initially-comatose-children
#9
Beth S Slomine, Vinay M Nadkarni, James R Christensen, Faye S Silverstein, Russell Telford, Alexis Topjian, Joshua D Koch, Jill Sweney, Ericka L Fink, Mudit Mathur, Richard Holubkov, J Michael Dean, Frank W Moler
AIM: To describe the 1-year neurobehavioral outcome of survivors of cardiac arrest secondary to drowning, compared with other respiratory etiologies, in children enrolled in the Therapeutic Hypothermia after Pediatric Cardiac Arrest Out-of-Hospital (THAPCA-OH) trial. METHODS: Exploratory analysis of survivors (ages 1-18 years) who received chest compressions for ≥2min, were comatose, and required mechanical ventilation after return of circulation (ROC). Participants recruited from 27 pediatric intensive care units in North America received targeted temperature management [therapeutic hypothermia (33°C) or therapeutic normothermia (36...
March 6, 2017: Resuscitation
https://www.readbyqxmd.com/read/28258484/corpuls-cpr-resuscitation-device-generates-superior-emulated-flows-and-pressures-than-lucas-ii-in-a-mechanical-thorax-model
#10
S Eichhorn, A Mendoza Garcia, M Polski, J Spindler, A Stroh, M Heller, R Lange, M Krane
The provision of sufficient chest compression is among the most important factors influencing patient survival during cardiopulmonary resuscitation (CPR). One approach to optimize the quality of chest compressions is to use mechanical-resuscitation devices. The aim of this study was to compare a new device for chest compression (corpuls cpr) with an established device (LUCAS II). We used a mechanical thorax model consisting of a chest with variable stiffness and an integrated heart chamber which generated blood flow dependent on the compression depth and waveform...
March 3, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28242180/development-and-validation-of-an-improved-mechanical-thorax-for-simulating-cardiopulmonary-resuscitation-with-adjustable-chest-stiffness-and-simulated-blood-flow
#11
Stefan Eichhorn, Johannes Spindler, Marcin Polski, Alejandro Mendoza, Ulrich Schreiber, Michael Heller, Marcus Andre Deutsch, Christian Braun, Rüdiger Lange, Markus Krane
Investigations of compressive frequency, duty cycle, or waveform during CPR are typically rooted in animal research or computer simulations. Our goal was to generate a mechanical model incorporating alternate stiffness settings and an integrated blood flow system, enabling defined, reproducible comparisons of CPR efficacy. Based on thoracic stiffness data measured in human cadavers, such a model was constructed using valve-controlled pneumatic pistons and an artificial heart. This model offers two realistic levels of chest elasticity, with a blood flow apparatus that reflects compressive depth and waveform changes...
February 24, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28203436/chest-physiotherapy-in-mechanically-ventilated-patients-without-pneumonia-a-narrative-review
#12
REVIEW
Herbert D Spapen, Jouke De Regt, Patrick M Honoré
A beneficial adjuvant role of chest physiotherapy (CPT) to promote airway clearance, alveolar recruitment, and ventilation/perfusion matching in mechanically ventilated (MV) patients with pneumonia or relapsing lung atelectasis is commonly accepted. However, doubt prevails regarding the usefulness of applying routine CPT in MV subjects with no such lung diseases. In-depth narrative review based on a literature search for prospective randomized trials comparing CPT with a non-CPT strategy in adult patients ventilated for at least 48 h...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28198552/cortical-spreading-depolarizations-in-the-postresuscitation-period-in-a-cardiac-arrest-male-rat-model
#13
Frederik Boe Hansen, Niels Secher, Morten Skovgaard Jensen, Leif Østergaard, Else Tønnesen, Asger Granfeldt
Neurological injury develops over days following cardiac arrest (CA); however, the exact mechanisms remain unknown. After stroke or trauma, the progression of neurological injury is associated with cortical-spreading depolarizations (CSDs). The objective was to investigate whether CA and subsequent resuscitation in rats are associated with 1) the development of spontaneous negative direct current (DC) shifts indicative of CSDs, and 2) changes in artificially induced CSDs in the postresuscitation period. Male Sprague-Dawley rats were randomized into four groups: 1) CA 90, 2) Control 90, 3) CA 360, and 4) Control 360...
February 15, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28187154/comparison-of-different-inspiratory-triggering-settings-in-automated-ventilators-during-cardiopulmonary-resuscitation-in-a-porcine-model
#14
Dingyu Tan, Jun Xu, Shihuan Shao, Yangyang Fu, Feng Sun, Yazhi Zhang, Yingying Hu, Joseph Walline, Huadong Zhu, Xuezhong Yu
BACKGROUND: Mechanical ventilation via automated in-hospital ventilators is quite common during cardiopulmonary resuscitation. It is not known whether different inspiratory triggering sensitivity settings of ordinary ventilators have different effects on actual ventilation, gas exchange and hemodynamics during resuscitation. METHODS: 18 pigs enrolled in this study were anaesthetized and intubated. Continuous chest compressions and mechanical ventilation (volume-controlled mode, 100% O2, respiratory rate 10/min, and tidal volumes 10ml/kg) were performed after 3 minutes of ventricular fibrillation...
2017: PloS One
https://www.readbyqxmd.com/read/28168185/optimal-chest-compression-rate-and-compression-to-ventilation-ratio-in-delivery-room-resuscitation-evidence-from-newborn-piglets-and-neonatal-manikins
#15
REVIEW
Anne Lee Solevåg, Georg M Schmölzer
Cardiopulmonary resuscitation (CPR) duration until return of spontaneous circulation (ROSC) influences survival and neurologic outcomes after delivery room (DR) CPR. High quality chest compressions (CC) improve cerebral and myocardial perfusion. Improved myocardial perfusion increases the likelihood of a faster ROSC. Thus, optimizing CC quality may improve outcomes both by preserving cerebral blood flow during CPR and by reducing the recovery time. CC quality is determined by rate, CC to ventilation (C:V) ratio, and applied force, which are influenced by the CC provider...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28120018/-surgical-treatment-of-achalasia-endoscopic-or-laparoscopic-proposal-for-a%C3%A2-tailored-approach
#16
B H A von Rahden, J Filser, M Al-Nasser, C-T Germer
Primary idiopathic achalasia is the most common form of the rare esophageal motility disorders. A curative therapy which restores the normal motility does not exist; however, the therapeutic principle of cardiomyotomy according to Ernst Heller leads to excellent symptom control in the majority of cases. The established standard approach is Heller myotomy through the laparoscopic route (LHM), combined with Dor anterior fundoplication for reflux prophylaxis/therapy. At least four meta-analyses of randomized controlled trials (RCTs) have demonstrated superiority of LHM over pneumatic dilation (PD); therefore, LHM should be used as first line therapy (without prior PD) in all operable patients...
March 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28040384/circulatory-collapse-right-ventricular-dilatation-and-alveolar-dead-space-a-triad-for-the-rapid-diagnosis-of-massive-pulmonary-embolism
#17
Raúl J Gazmuri, Dimple J Patel, Rom Stevens, Shani Smith
A triad of circulatory collapse, right ventricular dilatation, and large alveolar dead space is proposed for the rapid diagnosis and treatment of massive pulmonary embolism. A 17year-old female on oral contraceptives collapsed at home becoming incoherent with shallow breathing. Paramedics initiated mechanical chest compression and transported the patient to our emergency department, arriving minimally responsive with undetectable blood pressure but having positive corneal reflexes and bradycardia with wide QRS...
December 16, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27998838/emergency-percutaneous-implantation-of-veno-arterial-extracorporeal-membrane-oxygenation-in-the-catheterisation-laboratory
#18
Tomaz Goslar, Rihard Knafelj, Peter Radsel, Misa Fister, Alenka Golicnik, Klemen Steblovnik, Vojka Gorjup, Marko Noc
AIMS: Our aim was to describe our protocol for emergency percutaneous implantation of femoral veno-arterial extracorporeal membrane oxygenation (VA ECMO) in the catheterisation laboratory and to compare its effectiveness and safety with implantation in the intensive care unit and the operating room. METHODS AND RESULTS: Our retrospective observational study enrolled 56 consecutive patients undergoing VA ECMO implantation in the catheterisation laboratory (n=23), the intensive care unit (n=8) and the operating room (n=25)...
December 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27987159/a-novel-nonlinear-mathematical-model-of-thoracic-wall-mechanics-during-cardiopulmonary-resuscitation-based-on-a-porcine-model-of-cardiac-arrest
#19
Ali Jalali, Allan F Simpao, Vinay M Nadkarni, Robert A Berg, C Nataraj
Cardiopulmonary resuscitation (CPR) is used widely to rescue cardiac arrest patients, yet some physiological aspects of the procedure remain poorly understood. We conducted this study to characterize the dynamic mechanical properties of the thorax during CPR in a swine model. This is an important step toward determining optimal CPR chest compression mechanics with the goals of improving the fidelity of CPR simulation manikins and ideally chest compression delivery in real-life resuscitations. This paper presents a novel nonlinear model of the thorax that captures the complex behavior of the chest during CPR...
February 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/27970299/tct-134-mechanical-chest-compressions-as-a-bridge-to-percutaneous-extracorporeal-life-support-increase-return-of-spontaneous-circulation-in-patients-with-cardiac-arrest
#20
Joseph Venturini, Elizabeth Retzer, Raider Estrada, Janet Friant, David Beiser, Dana Edelson, Jonathan Paul, John Blair, Sandeep Nathan, Atman Shah
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
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