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dc.contributor.authorSutter, John
dc.creatorSutter, John
dc.date.accessioned2019-07-20T02:33:22Z
dc.date.available2019-07-20T02:33:22Z
dc.date.issued2019
dc.identifier.urihttp://hdl.handle.net/10150/633457
dc.descriptionA Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine.
dc.description.abstractHigher chest compression release velocity (CCRV) has been associated with better outcomes after out-of-hospital cardiac arrest (OHCA), and patient factors have been associated with variations in chest wall compliance and compressibility. We evaluated whether patient sex, age, weight, and time in resuscitation were associated with CCRV during pre-hospital resuscitation from OHCA. This observational study of prospectively collected OHCA quality improvement data in two suburban EMS agencies in Arizona between 10/1/2008 and 12/31/2016. Subject-level mean CCRV during the first 10 minutes of compressions was correlated with categorical variables by the Wilcoxon rank-sum test and with continuous variables by the Spearman’s rank correlation coefficient. Generalized estimating equation and linear mixed-effect models were used to study the trend of CCRV over time. During the study period, 2,535 adult OHCA cases were treated. After exclusion criteria, 1,140 cases remained for analysis. Median duration of recorded compressions was 8.70 minutes during the first 10 minutes of CPR. An overall decline in CCRV was observed even after adjusting for compression depth. The subject-level mean CCRV was higher for minutes 0-5 than for minutes 5-10 (mean 347.9 mm/s vs. 339.0 mm/s, 95% CI of the difference -12.4 ~ -5.4, p < 0.0001). Males exhibited a greater mean CCRV compared to females [344.4 mm/s (IQR 307.3-384.6) vs. 331.5 mm/s (IQR 285.3-385.5), p=0.013]. Mean CCRV was negatively correlated with age and positively correlated with patient weight. CCRV declines significantly over the course of resuscitation. Patient characteristics including male sex, younger age, and increased weight were associated with a higher CCRV.
dc.language.isoen
dc.publisherThe University of Arizona.
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the College of Medicine - Phoenix, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
dc.subjectEmergency Medicine
dc.subjectCPR
dc.subjectChest Compression Release Velocity
dc.subjectQuality
dc.subject.meshEmergency Medicine
dc.titleAssociations of Chest Compression Release Velocity and Age, Weight, and Gender during Cardiac Resuscitation
dc.typetext
dc.typeElectronic Thesis
dc.contributor.departmentThe University of Arizona College of Medicine – Phoenix
dc.description.collectioninformationThis item is part of the College of Medicine - Phoenix Scholarly Projects 2019 collection. For more information, contact the Phoenix Biomedical Campus Library at pbc-library@email.arizona.edu.
dc.contributor.mentorBobrow, Bentley J.
refterms.dateFOA2019-07-20T02:33:22Z


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