Comparison of Post-operative Outcomes Between Direct Axillary Artery Cannulation and Side-Graft Axillary Artery Cannulation in Cardiac Surgery: A Systematic Review and Meta-Analysis.

Background: There is a growing perception of using axillary artery cannulation to improve operative outcomes in cardiopulmonary bypass surgery. Two techniques, direct cannulation or side-graft cannulation, can be used for axillary artery cannulation, but which technique is better is controversial. Methods: A meta-analysis of comparative studies reporting operative outcomes using direct cannulation vs. side-graft cannulation was performed. We searched the PubMed, EMbase, Web of Science, and Cochrane Library. Outcomes of interest were neurological dysfunction, cannulation-related complications and early mortality. The fixed effects model was used. Results: A total of 1,543 patients were included in the final analysis. Direct cannulation was used in 846 patients, and side-graft cannulation was used in 697 patients. Meta-analysis showed a higher occurrence of neurological Complication in direct cannulation group [odds ratio, 1.45, 95% CI (1.00, 2.10), χ2 = 4.40, P = 0.05] and a significantly higher incidence of cannulation-related complications in the direct cannulation group [odds ratio, 3.12, 95% CI (1.87, 5.18), χ2 = 2.54, P < 0.0001]. The incidence of early mortality did not have a difference [odds ratio, 0.95, 95% CI (0.64, 1.41), χ2 = 6.35, P = 0.79]. Conclusions: This study suggests that side-graft axillary artery cannulation is a better strategy as it reduces the incidence of neurological dysfunction and cannulation-related complications. Systematic Review Registration: https://www.crd.york.ac.uk/PROSPERO/, identifier: CRD42022325456.

Direct bilateral carotid artery cannulation can be better strategy for acute aortic dissection involving both carotid arteries.

Although acute aortic dissections with bilateral carotid artery involvement are rare, they have serious morbidity and mortality rates. The most important strategy in cases with carotid involvement is to provide adequate cerebral perfusion during cardiopulmonary bypass. In this case, we presented, aortic dissection with bilateral carotid involvement was detected in the patient who was admitted to the emergency department with severe chest pain, vision loss, and left arm monoplegia, and the decision for surgery was made urgently. Selective cerebral perfusion was provided throughout the operation with direct bilateral carotid cannulation, in terms of being the fastest method and providing adequate cerebral flow. During the discharge period, full recovery was achieved in neurological deficits without any sequelae. We think that the technique we have applied in such a difficult and complicated case is the best strategy because it is fast and effective.

Randomized control trial on effectiveness and safety of direct trocar versus Veress needle entry techniques in obese women during diagnostic laparoscopy.

PURPOSE: To determine the benefits and safety of direct trocar insertion versus Veress needle technique in obese women undertaking diagnostic laparoscopy procedures. METHODS: Randomized-controlled trial on 135 obese women undergoing diagnostic laparoscopy and dye test for infertility was conducted. Women were randomly assigned to either direct trocar access (n = 68) or Veress needle access (n = 67) before achieving pneumoperitoneum. The same surgeon executed the laparoscopic techniques with a single-puncture technique. The primary outcome measures included total length of the procedure and incidence of any complications, while the mean laparoscopic entry time, volume of CO2 required, and total of tries needed to attain successful entry were secondary outcomes. Intention-to-treat principle was applied to analysis. RESULTS: Women in both groups had similar socio-demographic and clinical characteristics and none were lost to follow-up. The overall length of the procedure was significantly lesser in the direct trocar group compared to the Veress needle group (9.9 ± 6.0 vs 16.7 ± 4.7 min; p < 0.001). No significant differences occurred in other outcomes including mean entry time, volume of CO2 used, number of attempts for successful entry, and major/minor complications (p > 0.05). CONCLUSIONS: Direct trocar technique may be an effective alternative to Veress needle for pneumoperitoneum in obese women for diagnostic laparoscopy. It has a comparable rapid laparoscopic entry time but a significantly lower duration of the procedure and shorter exposure to anesthesia. Both methods are equally effective as there was no significant difference in the complications recorded. A greater sample trial may be essential for more corroborative substantiation. CLINICAL TRIAL REGISTRATION: PACTR201510000999192.

Direct Cannulation of Ascending Aorta versus Standard Femoral Artery Cannulation in Acute Aortic Dissection Type A.

BACKGROUND: During surgery for ascending aortic dissection, the dissected ascending aorta itself has traditionally been rejected as a cannulation option. The purpose of this study is to prove that direct cannulation of the ascending aorta in patients operated for acute aortic dissection type A (AADA) is at least as effective and safe as classic femoral cannulation. METHODS AND RESULTS: Between September 2008 and January 2015, we operated on 117 patients with AADA through median sternotomy. Cannulation was accomplished in 32 cases (27%) through the femoral artery (group A), and in 85 patients (73%) through the dissected ascending aorta (group B). Moderate hypothermic circulatory arrest with bilateral antegrade cerebral perfusion was used in 108 patients (92%). The mean time of circulatory arrest was 17 minutes (range: 9-52 minutes). The 30-day mortality rate was 22% (7 patients) in group A, and 18% (15 patients) in group B (P = not significant). Temporary neurologic dysfunction (TND) including postoperative confusion, delirium, or agitation occurred in four patients (13%) in group A, and four patients (5%) in group B (P = not significant). The incidence of permanent neurologic dysfunction (stroke) was 9% (3 patients) in group A and 3% (3 patients) in group B. CONCLUSIONS: The direct cannulation of the ascending aorta is a safe alternative for patients with AADA, offering the opportunity for antegrade cerebral perfusion. It is easy to perform, reliable, and associated with acceptable early results.

Anatomical features of the vertebral artery for transbrachial direct cannulation of a guiding catheter to perform coil embolization of cerebral aneurysms in the posterior cerebral circulation.

BACKGROUND: Transbrachial approach is an alternative technique for coil embolization of posterior circulation aneurysms. The purpose of our study was to investigate the anatomical features of the vertebral artery (VA) for transbrachial direct VA cannulation of a guiding catheter (GC) to perform coil embolization of posterior circulation aneurysms. METHODS: Included in retrospective analysis were patients who underwent transbrachial coil embolization of cerebral aneurysms in the posterior cerebral circulation by direct VA cannulation of a GC from 2007 to 2013. Investigated were patient characteristics, preoperative sizes of aneurysms, aneurysms location, the angle formed by the target VA and the subclavian artery (AVS), and the VA diameter at the level of the fourth cervical vertebral body (VAD) in the side of the transbrachial access route. RESULTS: Thirty-one patients with 32 aneurysms met our criteria. The locations of aneurysms were the VA (n = 16), basilar artery (BA) tip (n = 10), BA trunk (n = 3), BA superior cerebellar artery (n = 1), BA anterior inferior cerebellar artery (n = 1), and VA posterior inferior cerebellar artery (n = 1). The right brachial artery was punctured in 27 cases with 28 aneurysms as transbrachial direct cannulation of a GC, and left was in 4 cases with 4 aneurysms. The average AVS, ranging from 45° to 95°, was 77°, and the average VAD, ranging from 3.18 to 4.45 mm, was 3.97 mm. CONCLUSION: For transbrachial direct cannulation of a GC, it seems required that the AVS is about 45° or more and the VAD is about 3.18 mm or more.

A control study on selective biliary cannulation technique reducing incidence of post-ERCP pancreatitis / 中华肝胆外科杂志

Objective To determine if using a soft-tipped guidewire to cannulate the common bile duct may ameliorate development of PEP(post-ERCP pancreatitis)and facilitate cannulation of the CBD(common bile duct).Methods A total of 78 patients treated treateed in our hospital underwent ERCP through conventional direct cannulation(52 diagnostic ERCPs,26 therapeutics ERCPs)from 1998 to 2001 were randomly selected as group A while 112 patients underwent ERCP through guide wire-directed cannulation(21 diagnostic ERCPs,91 therapeutics ERCPs)from 2007 to 2008 as group B.Then we retrospectively studied and compared the following parameters between the two groups:1)Success rate of biliary access;2)visualization rate of pancreatic duct;3)the level of serum amylase,severity of abdominal pain and the rate of PEP.Meanwhile,the correlation between grading of pancreatic duct visualization and PEP was analyzed.Results The success rate of biliary access of the guidewire group(106/112 cases)was significantly greater than the conventional group(33/78 cases)(94.64%vs.42.30%,P<0.01).In group A,about61.53%(16/26)of the 26 cases could not continue the next therapeutics ERCP because of unsucceasful carmulation. The visualization rate of pancreatic duct of group A and B were 58.97%(46/78 cases)and 8.04%(9/112 cases)(P<0.01) respectively.On occurrence rate of PEP,group A(17/78 cases)was significantly higher than group B(4/112 cases)(21.79% vs.3.57%,P<0.01),and severe pancreatitis occurred in 3 patients in conventional group.However,there was no severe pancreatitis in the guide wire group.There were no significant differences (P>0.05) in terms of the rate of hyperamylasemia between the two groups.The significant correlation was found between the grading of pancreatic duct visualization and the occurrence of PEP.Condusion Guidewire-directed selective access to the bile duct lowers likdihood of PEP by facilitating cannulation and lowering the visualization rate of pancreatic duct.The occurrence of PEP could be predicted by the grading of pancreatic duct visualization,which is a very important but not the unique factor leading to PEP.