Obstrution of the urinary tract is a potential cause of renal failure. Acute unilateral obstruction of the kidney is associated with an increase in pelvic pressure followed by a decrease in ipsilateral renal blood flow (1). Concomitantly with these pressure changes the synthesis of renal vasoactive hormones is changed. There are different opinions about the effects of prostaglandins (PGs) on re...

BACKGROUND To investigate functional aspects of silent ureteral stones with special focus on obstruction and its relationship to renal anatomy. The present study is the first investigation of renal excretory function in patients with silent ureteral stones. METHODS Patients with primarily asymptomatic ureteral stones underwent a mercapto-acetyltriglycine (MAG-3) renal scintigraphy prior to tr...

Vascular variations and the accidental cutting of veins and arteries potentially create problems during surgery and medical treatment. The surgeon's awareness of a vascular variation in the kidneys is essential during renal surgery and transplantation, color Doppler imaging, gonadal surgery and in the presence of an abdominal aortic aneurism. This awareness can improve the patient's recove...

THE frequent association of hypertension and intrinsic renal diseases has been universally recognized, and more recently a relationship has been demonstrated between hypertension and the concurrence of major renal artery disease and specific renal functional abnormalities. In searching for the etiology of essential hypertension, it seems logical, therefore, to consider the possibility that here...

The management of renal artery stenosis (RAS) remains controversial. While some evidence suggests that treatment with stent placement is beneficial, randomized trials have failed to demonstrate a significant benefit. Ongoing clinical trials should help to better define the role for stenting of RAS while avoiding limitations seen with earlier trials. When it comes to stenting for RAS, several st...

Urinary tract obstruction that causes hydronephrosis may lead to an increased pressure proximal to the obstruction, including the tubules and the renal interstitium, thus causing tubular dysfunction, a decrease in glomerular filtration rate (GFR) and increased serum creatinine levels. Early diagnosis and treatment of obstructive hydronephrosis is important to preserve renal function. Imaging st...

Objective: Coronary slow flow (CSF) is a phenomenon characterized by slowly flowing contrast medium through the epicardial coronary arteries during angiographic examination without detectable stenosis or obstruction. To our knowledge, the relationship between CSF and renal blood flow has not been investigated. Therefore, this study investigated the relationship between CSF and renal blood flow....

The role of the renal vasculature in eliciting renovascular hypertension (RVH) was established in 1934, when Goldblatt et al. [1] in a classical experimental study demonstrated that partial obstruction of the renal artery increased mean arterial blood pressure (BP). The pathophysiology of renal artery stenosis (RAS) is incompletely understood but has been postulated to be related to increased a...

Certain benefits are clearly associated with the use of off-pump coronary artery bypass grafting (CABG) as compared with the on-pump CABG. The superiority is more evident in patients with multiple co morbidities including renal failure.We reviewed the medical records of a 67-year-old male with a past medical history that was significant for multiple cardiovascular diseases and new-onset end-sta...