Interposed abdominal compression-cardiopulmonary resuscitation after cardiac surgery

Abdominal compressions during cardiopulmonary resuscitation: a scoping review

OBJECTIVES

to map the scientific evidence on the use of abdominal compressions during cardiopulmonary resuscitation in patients with cardiac arrest.

METHODS

this is a scoping review based on the question: "What is the evidence regarding the use of abdominal compressions during cardiopulmonary resuscitation in patients with cardiac arrest?". Publications up to August 2022 were collected from eight databases. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews was used.

RESULTS

seventeen publications were included. The identified general population consisted of adults and elderly individuals. The primary outcome revealed significant rates of return of spontaneous circulation. Secondary outcomes indicated a significant improvement in heart rate, blood pressure, oxygen saturation, and other outcomes.

CONCLUSIONS

abdominal compressions have been shown to be beneficial. However, further clinical studies are needed to identify the best execution method and its impacts.

Efficacy and safety of active abdominal compression-decompression versus standard CPR for cardiac arrests: A systematic review and meta-analysis of 17 RCTs

BACKGROUND & AIM

Active abdominal compression-decompression cardiopulmonary resuscitation (AACD-CPR), which applies to cardiac arrests with contraindication of standard chest compressions (SCC) CPR, has been utilized in cardiac arrest. However, the efficacy and safety of AACD-CPR still remained controversy. This analysis was designed to comprehensively compare AACD versus SCC-CPR in patients with cardiac arrest.

METHODS

We searched the Cochrane Library, PubMed, EMBASE, Web of Science and CNKI up to April 22, 2019. Mean difference (MD) and risk ratio (RR) with its 95% confidence intervals (CIs) were estimated to compare outcomes of the groups. Our primary outcomes were restoration of spontaneous circulation (ROSC) and short-term survival. Two reviewers assessed trial quality and extracted data independently. All statistical analyses were performed using standard statistical procedures provided in Review Manager 5.2 and Stata 12.0.

RESULTS

A total of seventeen studies (N = 1647 patients) were identified for the present analysis. Compared with standard CPR, AACD-CPR was superior in restoration of spontaneous circulation (ROSC) and short-term survival, with pooled RRs of 1.38 (95% CI 1.23-1.55; P < 0.00001) and RRs of 2.05 (95% CI 1.69-2.50; P < 0.00001) respectively. In addition, significant superiority of AACD-CPR was found in incidence of fracture, long-term survival, pressure of end-tidal carbon dioxide (PETCO2), coronary perfusion pressure (CPP) and adverse events. No significant difference was observed in incidence of vomiting.

CONCLUSIONS

Generally, in this combined analysis we found a statistically significant improvement in survival and ROSC with the use of AACD-CPR as compared with the use of standard CPR. There was also significant improvement in incidence of fracture, long-term survival, PETCO₂ and CPP with AACD-CPR in comparison with standard CPR; results were not statistically different between the groups regarding to vomiting rate and adverse events. The standardized, diversified and individualized methods of clinical operation of AACD-CPR need exploration and expectingly serve as a guideline for clinical application of AACD-CPR in the future.

Clinical evaluation of active abdominal lifting and compression CPR in patients with cardiac arrest

BACKGROUND

Chest compression is a standard recommendation during cardiopulmonary resuscitation (CPR). However, chest compression cannot be effectively applied under certain situations, such as chest wall deformity, rib fracture, or hemopneumothorax. An alternative method, abdominal compression, was reported to achieve better resuscitation outcomes in these patients.

MATERIALS AND METHODS

A prospective study was performed in adult patients with cardiac arrest and anticipated ineffective chest compression (thoracic trauma, chest deformity, rib fracture, and hemopneumothorax). Active abdominal lifting and compression cardiopulmonary resuscitation was used. Primary outcome was success rate of restoration of spontaneous circulation (ROSC). Secondary outcomes included heart rate (HR), mean arterial pressure (MAP), pulse oximetry saturation (SpO₂), arterial blood pH value, arterial oxygen pressure (PaO₂), and arterial carbon dioxide tension (PaCO₂), which were measured during the periods of pre-CPR, CPR, and 30min post-ROSC.

RESULTS

A total of 35 patients were enrolled into the study. Five of them had ROSC (14.3%), which was statistically significantly higher than that (0%) reported in the 2015 Advanced Cardiovascular Life Support manual. HR, MAP, and SpO₂ during CPR were also statistically significantly higher during CPR when compared to the period of pre-CPR period (HR 58 versus 0 beats/min, P<0.01; MAP 25 versus 0mm Hg, P<0.01; SpO₂ 0.68 versus 0.48%, P<0.01). In post-ROSC period, HR was statistically significantly higher than that during pre-CPR period (121 versus 0 best/min, P<0.01).

CONCLUSIONS

Active abdominal lifting and compression cardiopulmonary resuscitation could reach better resuscitation outcomes in certain cardiac arrest patients.

Combination of chest compressions and interposed abdominal compressions in a swine model of ventricular fibrillation

PURPOSE

The aim of this study was to investigate the effects of the combination of chest compressions and interposed abdominal compressions (IAC-CPR) in a swine model of ventricular fibrillation (VF).

METHODS

Twenty healthy female Landrace-Large White pigs were the study subjects. At the end of the eighth minute of VF, animals in the control group (Group A) received chest compressions at a rate of 100/min, while animals in the experimental group received chest compressions and simultaneous interposed abdominal compressions (CC-IAC - Group B), both at a rate of 100/min. The primary end point of the experiment was return of spontaneous circulation (ROSC). Secondary outcomes were 48-h survival rate and 48-h neurologic outcome.

RESULTS

Six animals (60%) from Group A and 9 animals (90%) from Group B achieved ROSC (P=.121). There was a statistically significant difference in systolic aortic pressure, mean aortic pressure, right atrial pressures, and end-tidal carbon dioxide (ETCO2) between the two groups during the first cycle of CPR, while during the second cycle, diastolic aortic pressure was significantly higher in Group B. Coronary perfusion pressure (CPP) values in group B were significantly higher compared with those in Group A during the first and second cycle of CPR. Neurologic examination was statistically significantly better in Group B (75.00±10.00 vs. 90.00±10.00, P=.037).

CONCLUSION

ROSC did not differ statistically significant in the IAC-CPR compared to the CPR group only, while CPP was significantly higher in IAC-CPR-treated animals.

Interposed Abdominal Compression CPR for an Out-of-Hospital Cardiac Arrest Victim Failing Traditional CPR

Interposed abdominal compression cardiopulmonary resuscitation (IAC-CPR) is an alternative technique to traditional cardiopulmonary resuscitation (CPR) that can improve perfusion and lead to restoration of circulation in patients with chest wall deformity either acquired through vigorous CPR or co-morbidity such as chronic obstructive pulmonary disease. We report a case of out-of-hospital cardiac arrest where IAC-CPR allowed for restoration of spontaneous circulation and eventual full neurologic recovery when traditional CPR was failing to generate adequate pulses with chest compression alone.