Publications

Objectives: The aim of this study was to evaluate the impact of transit-time flow measurement (TTFM) on early postoperative outcomesin total arterial coronary revascularization.

Methods: A single-centre retrospective analysis was conducted on 910 patients undergoing isolated total arterial coronary artery bypassgrafting with internal thoracic arteries (ITAs) at our institution, between January 2017 and February 2020. Complete arterial revascularization with bilateral ITAs with a Y-configuration, or single ITA, was planned for all patients. According to the surgeon preference, TTFM was assessed in 430 patients (TTFM group). They were compared with 480 patients without TTFM assessment (no TTFM group). Primary endpoint was the occurrence of in-hospital major cardiac adverse events (MACE). A propensity score analysis with an inverse probabilityweighting approach was performed to control for selection bias.RESULTS: TTFM was associated with longer cardiopulmonary bypass times (76.0 [62.0; 91.2] vs 79.0 [65.0; 94.0] min, P = 0.042). Six (1.4%)patients in the TTFM group versus no patient in the no TTFM group underwent intraoperative graft revision because of unsatisfying flowvalues (P = 0.011). MACE were significantly lower in the TTFM group (14, 3.3%) than in the no TTFM group (33, 6.9%, P = 0.014). At crude regression, TTFM was protective against MACE occurrence (odds ratios 0.46, 95% confidence interval 0.23–0.85, P = 0.016). Inverse probability weighting adjustment did not significantly displace P-values and odds ratios for MACE occurrence in the TTFM group 0.44, 95% confidence interval 0.28–0.69, P < 0.001.

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Objective:

This study aimed at assessing outcomes after carotid endarterectomy (CEA) in dependence of center policy with respect to imaging intraoperative completion study (ICSⁱ) usage.

Summary Background Data:

Although randomized controlled studies are missing, a beneficial effect was shown for ICSⁱ techniques (i.e., angiography and intraoperative duplex ultrasound) after CEA.

Methods:

This secondary data analysis is based on the... Read more...

Background: Patients with chronic limb-threatening ischemia (CLTI) require revascularization to improve limb perfusion and thereby limit the risk of amputation. It is uncertain whether an initial strategy of endovascular therapy or surgical revascularization for CLTI is superior for improving limb outcomes.

Methods: In this international, randomized trial, we enrolled 1830 patients with CLTI and infrainguinal peripheral artery disease in two parallel-cohort trials. Patients who had a single segment of great saphenous vein that could be used for surgery were assigned to cohort 1. Patients who needed an alternative bypass conduit were assigned to cohort 2. The primary outcome was a composite of a major adverse limb event - which was defined as amputation above the ankle or a major limb reintervention (a new bypass graft or graft revision, thrombectomy, or thrombolysis) - or death from any cause.

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The recent reconfirmation of coronary artery bypass grafting (CABG) superiority over current percutaneous coronary interventions (PCIs) in various clinical scenarios resulted in renewed interest in less invasive surgical coronary artery revascularization. The continuous refinement of minimally invasive CABG(MI-CABG) techniques is paralleled by exciting advances in surgical technology that facilitate the safe and efficient harvesting of the internal thoracic artery (ITA) and the construction of multi-vessel coronary artery anastomosis under either direct vision or by using videoscopic or robotic platforms. Read more...

Delayed graft function (DGF) remains a significant and detrimental post-operative phenomenon following living-related renal allograft transplantation, with a published incidence of up to 15%. Early therapeutic vasodilatory interventions have been shown to improve DGF, and modifications to immunosuppressive regimens may subsequently lessen its impact. This pilot study assesses the potential applicability of perioperative non-invasive cardiac output monitoring (NICOM), transit-time flow monitoring (TTFM) of the transplant renal artery and pre-/perioperative thromboelasto-graphy (TEG) in the early prediction of DGF and perioperative complications.
Methods: Ten consecutive living-related renal allograft recipients were studied. Non-invasive cardiac output monitoring commenced immediately following induction of anaesthesia and was maintained throughout the perioperative period. Doppler-based TTFM was performed during natural haemostatic pauses in the transplant surgery: immediately following graft reperfusion and following ureteric implantation. Central venous blood sampling for TEG was performed following induction of anaesthesia and during abdominal closure.
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