Notes

'Synthetic cannabis': A dangerous misnomer.
One patient occluded the relined grafts after 6 months. The remaining 4 grafts were all patent at 24-month follow-up. A total of 6 reinterventions (in 3 patients) were performed to reach 80% secondary patency.

This case series demonstrate feasibility and promising mid-term results, from relining of chronically occluded infra-inguinal venous bypass grafts using stent grafts, interwoven and bare-metal stents without preceding thrombolysis. The technique could be an alternative treatment option in the treatment of these challenging cases.
This case series demonstrate feasibility and promising mid-term results, from relining of chronically occluded infra-inguinal venous bypass grafts using stent grafts, interwoven and bare-metal stents without preceding thrombolysis. The technique could be an alternative treatment option in the treatment of these challenging cases.
In the United States, many low-income patients initiating hemodialysis are uninsured before qualifying for Medicare. Inadequate access to predialysis care may delay their arteriovenous (AV) access creation and increase tunneled dialysis catheter (TDC) use. The 2014 Affordable Care Act expanded eligibility for Medicaid among low-income adults, but not every state adopted this measure. We evaluated whether Medicaid expansion was associated with decreased TDC use for hemodialysis initiation.

We queried the United States Vascular Quality Initiative state-level database for non-Medicare patients undergoing initial AV access creation from 2011 to 2018. We evaluated associations of receiving initial AV access in states that expanded Medicaid with concurrent TDC use, survival, and insurance coverage.

Data were available for patients in 31 states 19 states expanded Medicaid from January 2014 to February 2015. Among 8462 patients in the postexpansion period from March 2015 to December 2018, 58% were in Medicaid ecost-savings for hemodialysis patients.
Patients in Medicaid expansion states were less likely to have TDCs during initial AV access creation, suggesting earlier predialysis care. Hispanic patients benefited from increased insurance coverage. Expanding insurance options for the underserved may improve quality metrics and cost-savings for hemodialysis patients.
This study sought to define duplex ultrasound (DUS) velocity criteria predicting ≥70% stenosis in superior mesenteric artery (SMA) stents by correlating in-stent peak systolic velocity (PSV) with computed tomographic angiography (CTA) measurements of percent stenosis.

A retrospective review of 109 patients undergoing SMA stenting between 2003 and 2018 was conducted at a single institution. Thirty-seven surveillance duplex ultrasound studies were found to have a CTA performed within 30 days of study completion. Bare metal (n = 20) and covered stents (n = 17) were included. Velocities were paired to in-stent restenosis (ISR) measured by mean vessel diameter reduction on SMA centerline reconstructions from CTA. Receiver operating characteristic (ROC) curves was generated and logistic regression models for ≥70% ISR probability were used to define velocity criteria in the stented SMA.

At a PSV of 300 cm/sec, the sensitivity is 100% and specificity 80% for a ≥70% in-stent SMA stenosis. At a PSV of 400 cm/sec, the sensitivity and positive predictive value (PPV) is 63% and the specificity and negative predictive value (NPV) is 90%. A PSV of 450 cm/sec was consistent with the highest specificity (100%) and PPV (100%) but lower sensitivity (50%) and NPV (87.9%). AG-14361 manufacturer One patient with a PSV of 441 cm/sec on surveillance DUS died from complications of acute-on-chronic mesenteric ischemia.

A PSV of 400 cm/sec on mesenteric DUS can predict ≥70% ISR with high sensitivity and should be considered as a diagnostic threshold for SMA in-stent restenosis.
A PSV of 400 cm/sec on mesenteric DUS can predict ≥70% ISR with high sensitivity and should be considered as a diagnostic threshold for SMA in-stent restenosis.
Venoarterial extracorporeal membrane oxygenation (VA-ECMO) can be undertaken surgically, but there are various problems with this method.

We removed the arterial cannula of VA-ECMO percutaneously by combining intravascular balloon dilatation and the Perclose ProGlide™ (PP) closure device in a short amount of time and the extent of bleeding was extremely small. Simultaneously, the venous cannula was removed by suturing and manual compression. We report a series of cases of percutaneous removal of VA-ECMO using intravascular balloon dilatation and PP.

By using this method, VA-ECMO removal was possible in a very short amount of time with minimal invasiveness.
By using this method, VA-ECMO removal was possible in a very short amount of time with minimal invasiveness.
The study aimed to assess the effects of serum YKL-40 level on patency at the repair site in patients who underwent arterial repair at the level of the forearm.

The study included 58 subjects, including 29 patients (aged 18-50 years) who had ulnar or radial artery injury secondary to cut injury to wrist between June 2015 and November 2019 and no comorbid disease and 29 age- and sex-matched healthy controls. The vascular patency was assessed using Doppler sonography in patients who underwent arterial repair at the level of the forearm. The patients were defined as flow failure if the blood flow was ≤50%, and sufficient flow if the blood flow was >50% of those in the synonymous artery on the intact extremity. The YKL-40 level differences in the patient and control groups were compared to those in the sufficient and insufficient flow groups.

The patients were stratified into 2 groups based on the presence of sufficient flow. The mean YKL level was 11.96 ± 8.87 in the sufficient flow groups, whereas it was 32.22 ± 15.43 in the insufficient flow groups (p= 0.038). Besides, it was found that each unit of increase in the YKL-40 level increased the likelihood of having flow failure by 1.128.

Based on our results, it was observed that over-expression of the YKL-40 level has adverse effects on patency following arterial repair.
Based on our results, it was observed that over-expression of the YKL-40 level has adverse effects on patency following arterial repair.
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