Most Read Articles
05 Feb 2021

Primary immunodeficiency disease (PIDD) and allergies are two groups of conditions related to the immune system. However, they are uniquely different in terms of symptoms and treatment.

Roshini Claire Anthony, 5 days ago

Switching from tenofovir disoproxil fumarate (TDF) to tenofovir alafenamide (TAF) did not result in worsening renal function or bone mineral density (BMD) in Asian patients with chronic hepatitis B virus (HBV) infection, according to a small real-world prospective study.

23 Feb 2021
Patients with multiple endocrine neoplasia type 1 (MEN1) are at greater risk of experiencing venous thromboembolism (VTE), suggests a recent study.
Roshini Claire Anthony, 3 days ago

Critical or severe COVID-19 disease could raise the risk of negative perinatal outcomes in pregnant women, according to an observational study from the US.

Ureteral diameter linked to ureteral injury during sheath placement

10 Jan 2021

The proximal ureteral diameter is a significant predictor of high-grade ureteral injury during ureteral access sheath placement, with a smaller diameter increasing the risk and severity of such injury, according to a recent study.

The authors prospectively enrolled 68 patients in this study from July 2014 to September 2015. Participants underwent preoperative noncontrast computerized tomography and had a 12Fr to 14Fr ureteral access sheath placement without presenting.

Subsequently, two urologists and one radiologist measured the proximal ureteral diameter. Two endourologists evaluated ureteral wall injuries using the 5-grade classification.

Of the patients, 64 (94.1 percent) had a successful sheath placement. Forty-six of these individuals (71.9 percent) had evidence of any type of injury to the ureter wall, and 12 (26.1 percent) suffered from high-grade injuries. Among those who had a high-grade injury, the ureteral diameter was significantly smaller compared to individuals who had low-grade injuries (mean, 3.29±0.46 vs 4.5±0.97 mm; p<0.001).

In addition, multivariate analysis revealed that narrower proximal ureteral diameter correlated with a higher risk of high-grade ureteral injury (odds ratio, 2.8, 95 percent confidence interval, 1.9–3.4; p<0.001), regardless of age, gender, body mass index, and middle and distal ureteral diameter.

“[P]reoperative measurement of the ureteral diameter is recommended for ureteral access sheath placement to predict the risk of ureteral injury,” the authors said.

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Most Read Articles
05 Feb 2021

Primary immunodeficiency disease (PIDD) and allergies are two groups of conditions related to the immune system. However, they are uniquely different in terms of symptoms and treatment.

Roshini Claire Anthony, 5 days ago

Switching from tenofovir disoproxil fumarate (TDF) to tenofovir alafenamide (TAF) did not result in worsening renal function or bone mineral density (BMD) in Asian patients with chronic hepatitis B virus (HBV) infection, according to a small real-world prospective study.

23 Feb 2021
Patients with multiple endocrine neoplasia type 1 (MEN1) are at greater risk of experiencing venous thromboembolism (VTE), suggests a recent study.
Roshini Claire Anthony, 3 days ago

Critical or severe COVID-19 disease could raise the risk of negative perinatal outcomes in pregnant women, according to an observational study from the US.