Effi cacy of partial and complete resuscitative endovascular balloon occlusion of the aorta in the hemorrhagic shock model of liver injury

BACKGROUND:Resuscitative endovascular balloon occlusion of the aorta(REBOA)can temporarily control traumatic bleeding.However,its prolonged use potentially leads to ischemia-reperfusion injury(IRI).Partial REBOA(pREBOA)can alleviate ischemic burden;however,its security and eff ectiveness prior to operative hemorrhage control remains unknown.Hence,we aimed to estimate the effi cacy of pREBOA in a swine model of liver injury using an experimental sliding-chamber ballistic gun.METHODS:Twenty Landrace pigs were randomized into control(no aortic occlusion)(n=5),intervention with complete REBOA(cREBOA)(n=5),continuous pREBOA(C-pREBOA)(n=5),and sequential pREBOA(S-pREBOA)(n=5)groups.In the cREBOA and C-pREBOA groups,the balloon was inflated for 60 min.The hemodynamic and laboratory values were compared at various observation time points.Tissue samples immediately after animal euthanasia from the myocardium,liver,kidneys,and duodenum were collected for histological assessment using hematoxylin and eosin staining.RESULTS:Compared with the control group,the survival rate of the REBOA groups was prominently improved(all P<0.05).The total volume of blood loss was markedly lower in the cREBOA group(493.14±127.31 mL)compared with other groups(P<0.01).The pH was significantly lower at 180 min in the cREBOA and S-pREBOA groups(P<0.05).At 120 min,the S-pREBOA group showed higher alanine aminotransferase(P<0.05)but lower blood urea nitrogen compared with the cREBOA group(P<0.05).CONCLUSION:In this trauma model with liver injury,a 60-minute pREBOA resulted in improved survival rate and was effective in maintaining reliable aortic pressure,despite persistent hemorrhage.Extended tolerance time for aortic occlusion in Zone I for non-compressible torso hemorrhage was feasible with both continuous partial and sequential partial measures,and the significant improvement in the severity of acidosis and distal organ injury was observed in the sequential pREBOA.

Application of ultrasound-guided balloon occlusion in cesarean section in 130 cases of sinister placenta previa

Objective:To investigate the clinical utility of ultrasound-guided balloon occlusion in cesarean section in patients with sinister placenta previa.Methods:The Interventional and Ultrasound Departments of the authors’center assisted obstetrics to complete cesarean section in cases of sinister placenta previa.A total of 130 patients with implanted sinister placenta previa were diagnosed using obstetrical ultrasound and magnetic resonance imaging(MRI).Before cesarean section,the balloon was positioned in the bilateral radial or abdominal aorta.Immediately after delivery of the fetus,the balloon was temporarily filled to transiently seal the target vessel.According to the obstetrician’s assessment of hemostasis,the balloon was withdrawn at the appropriate time.Among the 130 patients,there was one case of abdominal aortic occlusion,with 129 cases blocked by the bilateral common iliac artery.Results:All 130 cases were successfully blocked,with an average blocking time of<15 min,while intraoperative blood loss was 800–1500 ml.Conclusion:Ultrasound-guided balloon blocking treatment before cesarean section can mitigate the dangers of placenta previa and significantly reduce blood loss with no exposure to X-ray radiation.Thus,the technique merits serious consideration.

Application of Abdominal Aortic Balloon Occlusion Combined with Tourniquet in Pregnant Women with Severe Placenta Accreta Spectrum

Objective Abdominal aortic balloon occlusion(AABO)is a vascular intervention method that has been widely used in the treatment of severe placenta accreta spectrum(PAS).The aim of this study was to investigate the benefits,potential risks,and characteristics of AABO combined with tourniquet binding of the lower uterine segment(LUS)in treatment of pregnant women with PAS.Methods In this study,64 pregnant women with PAS scores greater than 5 were enrolled as research subjects and divided into two groups.Group A(n=34)underwent normal operative procedures including tourniquet binding of the LUS.Group B(n=30)underwent AABO combined with tourniquet binding of the LUS.General clinical characteristics,ultrasonography PAS score,intraoperative blood loss(IBL),blood loss within 24 h after surgery(24-h BL),postoperative complications,and neonatal data of the two groups were retrospectively reviewed.The influencing factors of IBL for the two groups were analyzed.Results The amounts of IBL,24-h BL,total input red blood cell,and the incidence of disseminated intravascular coagulation were significantly lower in group B than in group A(P<0.05),and this difference was even more significant in the subgroup of placenta percreta(PAS scores≥10).Further multivariate linear analysis showed that the combined therapy of AABO and tourniquet could independently predict lower IBL than normal operative procedures did(P=0.001).Conclusion AABO combined with tourniquet binding of the LUS could improve the outcomes of pregnant women with severe PAS and reduce serious peripartum complications of AABO.

Intra-abdominal aortic balloon occlusion in the management of placenta percreta

Background:Massive bleeding is the main concern for the management of placenta percreta(PP).Intra-abdominal aortic balloon occlusion(IABO)is one method for pelvic devascularization,but the efficacy of IABO is uncertain.This study aims to investigate the outcomes of IABO in PP patients.Methods:We retrospectively reviewed the clinical data of PP cases from six tertiary centers in China between January 2011 and December 2015.PP cases with/without the use of IABO were analyzed.Propensity score matching analysis was performed to reduce the effect of selection bias.Postpartum hemorrhage(PPH)and the rate of hysterectomy,as well as neonatal outcomes,were analyzed.Results:One hundred and thirty-two matched pairs of patients were included in the final analysis.Compared with the control group,maternal outcomes,including PPH(68.9%vs.87.9%,χ^(2)=13.984,P<0.001),hysterectomy(8.3%vs.65.2%,χ^(2)=91.672,P<0.001),and repeated surgery(1.5%vs.12.1%,χ^(2)=11.686,P=0.001)were significantly reduced in the IABO group.For neonatal outcomes,Apgar scores at 1 minute(8.67±1.79vs.8.53±1.68,t=-0.638,P=0.947)and 5 minutes(9.43±1.55vs.9.53±1.26,t=0.566,P=0.293)were not significantly different between the two groups.Conclusions:IABO can significantly reduce blood loss,hysterectomies,and repeated surgeries.This procedure has not shown harmful effects on neonatal outcomes.

Management of life-threatening celiac-hepatic arterial hemorrhage after pancreaticoduodenectomy： usefulness of temporary balloon occlusion

When a large visceral artery is ruptured, uncontrolled bleeding may lead to hemodynamic collapse. Use of endovascular occlusion balloon catheter may provide rapid control of hemorrhage and facilitate definitive therapy. We reported two patients with massive hemorrhage from ruptured celiac-hepatic artery after pancreaticoduodenectomy, who were initially treated percutaneously by temporary selective balloon occlusion. They became critically hemodynamic unstable during the angiographic procedure. Through an 8Fr sheath, a 6Fr compliant latex occlusion balloon was placed proximal to the celiac trunk and inflated, and upon patient stabilization surgical revision and stent-graft placement were successfully performed in the two patients, respectively. Temporary selective balloon occlusion provides fast and effective bleeding control for patient with critically uncontrollable visceral arterial hemorrhage, permitting subsequent use of conventional techniques for management of the arterial bleeding source.

Balloon-occluded retrograde transvenous obliteration for treatment of congenital intrahepatic portosystemic venous shunt:A case report

Congenital intrahepatic portosystemic venous shunt(CPSVS), a rare vascular malformation, has been described in both children and adults and can lead to severe neurophysiological complications. However, a standard therapeutic protocol for CPSVS has not been elucidated. With the advantage of minimally invasive techniques,transcatheter embolization has been used to treat CPSVS. The condition is challenging to manage, especially in patients with large or multiple shunts, through which rapid blood flow can cause ectopic embolism. Here, we describe a case of CPSVS with a large shunt that was successfully treated with balloon-occluded retrograde transvenous obliteration with interlocking detachable coils.

A simple practical balloon anchoring technique within the guide catheter for chronic total occlusion (CTO) of the coronary artery

Dear Editor： Chronic total occlusions （CTOs） of the coronary artery are commonly encountered complex lesionst11. Percutaneous coronary intervention （PCI） for CTO is technically challenging due to low procedural success ratesTM. Microcatheter is one of the important devices for treatment of CTOTM. It has been widely used attributed to the excellent crossability whenever angula- tion and tortuousity of the coronary artery is encoun- tered. In the process, the microcatheter has to be withdrawn from the guide wire after the wire is proved to locate in the true lumen.

Approach to traumatic cardiac arrest in the emergency department: a narrative literature review for emergency providers

BACKGROUND:Traumatic cardiac arrest(TCA)is a major contributor to mortality and morbidity in all age groups and poses a significant burden on the healthcare system.Although there have been advances in treatment modalities,survival rates for TCA patients remain low.This narrative literature review critically examines the indications and eff ectiveness of current therapeutic approaches in treating TCA.METHODS:We performed a literature search in the PubMed and Scopus databases for studies published before December 31,2022.The search was refi ned by combining search terms,examining relevant study references,and restricting publications to the English language.Following the search,943 articles were retrieved,and two independent reviewers conducted a screening process.RESULTS:A review of various studies on pre-and intra-arrest prognostic factors showed that survival rates were higher when patients had an initial shockable rhythm.There were conflicting results regarding other prognostic factors,such as witnessed arrest,bystander cardiopulmonary resuscitation(CPR),and the use of prehospital or in-hospital epinephrine.Emergency thoracotomy was found to result in more favorable outcomes in cases of penetrating trauma than in those with blunt trauma.Resuscitative endovascular balloon occlusion of the aorta(REBOA)provides an advantage to emergency thoracotomy in terms of occupational safety for the operator as an alternative in managing hemorrhagic shock.When implemented in the setting of aortic occlusion,emergency thoracotomy and REBOA resulted in comparable mortality rates.Veno-venous extracorporeal life support(V-V ECLS)and veno-arterial extracorporeal life support(V-A ECLS)are viable options for treating respiratory failure and cardiogenic shock,respectively.In the context of traumatic injuries,V-V ECLS has been associated with higher rates of survival to discharge than V-A ECLS.CONCLUSION:TCA remains a signifi cant challenge for emergency medical services due to its high morbidity and mortality rates.Pre-and intra-arrest prognostic factors can help identify patients who are likely to benefit from aggressive and resource-intensive resuscitation measures.Further research is needed to enhance guidelines for the clinical use of established and emerging therapeutic approaches that can help optimize treatment effi cacy and ameliorate survival outcomes.

EVALUATION OF THE BRAIN TOLERANCE TO CAROTID ARTERY OCCLUSION

Objective: To establish an objective criterion for assessing brain tolerance to carotid artery occlusion. Methods Endovascular trial balloon occlusion of carotid artery (TBO) in combination with single-photon emission computed tomography (SPECT), transcranial Doppler ultrasonography (TCD) and carotid artery stump pressure (SP) measurement was performed routinely for those patients who might have carotid artery manipulated or permanently occluded. Results Out of the 10 cases, one failed the TBO, though an angiographically adequate collateral circulation was observed. The patient’s SP and relative symmetry (rS) of SPECT imaging were 51mmHg and 86%. The remaining cases showed negative TBOs. After carotid occlusions, their mean velocity of ipsilateral middle cerebral artery decreased (16. 3 ± 6. 9 )%. The mean rS was (98. 0 ± 2. 4)% (92. 7% -101. 3% ). The mean SP was (64. 5 ± 13. 0)mmHg [(72. 3±11. 3)% of baseline, range 32-83mmHg. For one subject, the ICA was occluded spontaneously in the test. A reversal internal carotid artery (ICA ) flow was noted in 3 patients with balloon inflated in the common carotid artery (CCA ). When the CCA was occluded, the system blood pressure and heart rate increased apparently. However, this phenomenon did not occur when the ballon was inflated in the ICA. Conclusion With this TBO technique, clinically silent areas of decreased perfusion might be detected. We suggest it be a routine examination prior to carotid manipulations.

The Management of Placenta Accrete Spectrum-Burning Questions to Be Solved

Placenta accreta spectrum disorders resulting in a series of maternal morbidity and mortality has raised attention worldwide including China.There is an urgent need to confront with the dilemma of less evidenced-based recommendation on management,especially the key issues of controversial topics,including accurate prediction,conservative management with adjunct approaches.Chinese academic society along with international exports are on the way to pursue sensible solutions.