This study was conducted to investigate the importance of the depth of chest compression in producing effective cardiopulmonary resuscitation (CPR) in animals, as indicated by cardiac output and mean arterial blood pressure. Cardiac output was measured by a modified indicator dilution technique in 8 anesthetized dogs, 6 to 12 kg body weight, during repeated 2-minute episodes of electrically induced ventricular fibrillation and CPR provided by a mechanical chest compressor and ventilator (Thumper). Chest compression exceeding a threshold value (xo) between 1.5 and 3.0 cm was required in each animal to produce measurable cardiac output. In particular, cardiac output (CO) was linearly related to chest compression depth (x) by an expression of the form CO = a(x-xo) for x greater than xo. The mean value of xo was 2.3 cm. A similar threshold for measurable blood pressure was observed in 7 of the 8 dogs, with a mean value of 1.8 cm. For chest compression of 2.5 cm or greater, relatively modest increases in chest compression depth caused relatively large changes in cardiac output.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0196-0644(83)80290-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Challenges during cardiac arrest in pregnancy.
Resusc Plus
January 2025
Department of Emergency Medicine, University Hospital Gasthuisberg, Leuven, Belgium.
A 36-year-old woman at 23 weeks and 3 days of gestation experienced a witnessed cardiopulmonary collapse. Bystander cardiopulmonary resuscitation (CPR) was initiated immediately. After advanced life support, she was transferred under mechanical CPR to a hospital for extracorporeal membrane oxygenation (ECMO).
View Article and Find Full Text PDFRapid growth of a solitary fibrous tumor of the pleura after slow long-term progression: a case report.
J Cardiothorac Surg
January 2025
Division of Thoracic Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, 602-8566, Kyoto, Japan.
Background: Solitary fibrous tumors (SFTs) of the pleura are usually benign. We present a case of SFT of the pleura which grew rapidly after slow long-term progression.
Case Presentation: A 78-year-old man was referred to our hospital for left-sided back pain and shortness of breath.
Towards a common terminology of ventilation during cardiopulmonary resuscitation.
Resuscitation
January 2025
Institute for Emergency Medicine, University Hospital Schleswig-Holstein, Arnold-Heller-Straße 3, Haus 808, Kiel, 24105, Schleswig-Holstein, Germany; Department of Anesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, Graz, 8036, Styria, Austria. Electronic address:
Manual and mechanical ventilation during cardiopulmonary resuscitation are critical yet poorly understood components of resuscitation care. In recent years, intra-arrest ventilation has been the subject of a growing number of laboratory and clinical investigations. Essential components to accurately interpret or reproduce original investigations are the exact measurement and transparent reporting of key ventilation parameters, such as volumes and airway pressures obtained during ongoing cardiopulmonary resuscitation.
View Article and Find Full Text PDFDissociative and Deep Sedations Administered by Trained Unsupervised Pediatric Residents in Israeli Emergency Departments.
Ann Emerg Med
January 2025
Division of Pediatrics, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel. Electronic address:
Study Objective: To cover pediatric emergency physicians' off-hours, third-year pediatric residents in Israel are trained for unsupervised administration of emergency department (ED) dissociative and deep sedation. We assessed the frequency of critical sedation events associated with resident-performed sedations.
Methods: We conducted a retrospective chart review on all patients receiving intravenous sedation across 10 pediatric EDs between January 2018 and September 2022.
Hands at work: A randomised cross-over mannequin-based trial exploring the impact of hand preference of health care professionals on effectiveness of chest compressions.
Resusc Plus
January 2025
Department of Anaesthesiology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.
Aim And Background: There are various theories regarding the ideal hand to be in contact with chest during chest compressions when healthcare professionals and medical students perform cardiopulmonary resuscitation (CPR). Our study aimed to compare the impact of preferred versus non-preferred hand placement on chest on the CPR quality.
Methodology: The volunteers were randomised to place their preferred (P)/non-preferred (NP) hand over sternum for the first session and switch hands for the second.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!