Impact of Hyponatremia on COVID-19-Related Outcomes: A Retrospective Analysis.

Background: Sodium disturbances are observed in one-third of patients with COVID-19 and result from multifaceted mechanisms. Notably, hyponatremia is associated with disease progression and mortality.

Aim: We aimed to analyze the impact of hyponatremia on COVID-19 outcomes and its correlation with clinical and laboratory parameters during the first wave.

Retroperitoneoscopic approach for urolithi-asis treatment.

Objective: To show the main indications of retroperitoneoscopy (RP) for the treatment of urolithiasis. The use of RP approach has been limited, being narrow working space the major issue to overcome (1), especially in non-expert hands. However, RP has the added advantages of no peritoneal contamination, a quick recovery of bowel function (2) and the possibility to use it in combination with other endourological techniques (3) and innovative technology.

Retroperitoneoscopic approach for highly complex posterior renal hilar tumors.

Objectives:: To show our single-center experience in retroperitoneoscopic approach for highly complex posterior hilar tumors. Minimally invasive nephron sparing surgery for renal hilar tumors is extremely challenging due to their anatomic location, close to the main renal vessels and the collecting system (1). Transperitoneal approach is feasible, but highly complex because the anterior disposition of the vasculature.

Multiple renal tumorectomy in a Von Hipple Lindau patient. Combined retro/transperitoneal approach with intracorporeal hypotermia.

Objective & Introduction:: To show the feasibility of a combined transperitoneal (TP) and retroperitoneal (RP) laparoscopic approach in a Von Hipple-Lindau (VHL) patient with multiple kidney tumors. VHL is an autosomal dominant inherited syndrome characterized by a high incidence of benign and malignant tumors and cysts in many organs. Renal cell carcinoma is one of the most common and a leading cause of mortality (1).

Intracorporeal renal hypothermia with ice slush for robot-assisted partial nephrectomy in a highly complex renal mass.

To report our step-by-step technique for robotic partial nephrectomy using intracorporeal renal hypothermia (RPNIRH) in a highly complex renal mass. The robotic technology has allowed surgeons to recreate the principles of open surgery in a minimally invasive approach (1). With increasing experience, larger deeply infiltrative tumors can be treated with this technique (2).

Prevalence of distal renal tubular acidosis in patients with calcium phosphate stones.

Introduction And Purpose: Distal renal tubular acidosis (DRTA) is a metabolic disorder that associates urolithiasis and urinary pH > 6. The prevalence of DRTA in patients with calcium phosphate stones is not well known. The objective is to determine the prevalence of DRTA in patients with calcium phosphate stones and urinary pH above 6 based on the furosemide test.

Robotic Partial Nephrectomy for Complex Hilar Tumors: Step by step.

Objective: To report our step-by-step technique and provide tips and tricks for robotic partial nephrectomy (RPN) in a highly complex renal mass. Robotic surgery has widened the indications of the conservative treatment for renal masses. With increasing experience, larger deeply infiltrative tumors, or tumors involving the renal hilum can be treated with robotic partial nephrectomy.

[Efficacy and safety of bilateral RIRS for renal lithiasis.].

Objectives: We present our experience in single-stage bilateral retrograde intrarenal surgery (RIRS), analyzing the stone free rate (SFR), surgical time, hospital stay, pre- and post procedure creatinine, stone composition and complications.

Methods: Between April 2012 and February 2016, 24 RIRS were carried out in 12 patients with bilateral renal stones. Patients were 9 men and 3 women with a median age of 47.

Evaluation of a collagen-coated, resorbable fiber scaffold loaded with a peptide basic fibroblast growth factor mimetic in a sheep model of rotator cuff repair.

Background: A new scaffold design combined with a peptide growth factor was tested prospectively for safety and for improved tendon healing in sheep.

Methods: The infraspinatus tendon was detached and then surgically repaired to the humerus using sutures and anchors in 50 adult sheep. The repairs in 40 of these sheep were reinforced with a scaffold containing F2A, a peptide mimetic of basic fibroblast growth factor.

Effects of short and long-term indapamide treatments on urinary calcium excretion in patients with calcium oxalate dihydrate urinary stone disease: a pilot study.

Objective: The aim of this study was to determine the relative calcium-reducing effects of indapamide at 6 and 18 months using a dose of 1.5 mg/day.

Material And Methods: Twenty-two patients with idiopathic hypercalciuria and calcium oxalate dihydrate urinary stone disease (minimum one stone episode) were selected.

Concomitant carcinoma in situ and tumour size are prognostic factors for bladder recurrence after nephroureterectomy for upper tract transitional cell carcinoma.

Objective: To identify prognostic risk factors for the development of subsequent bladder recurrence in patients undergoing nephroureterectomy (NU) for upper tract transitional cell carcinoma (TCC).

Patients And Methods: The data of 79 patients who underwent NU for localized upper tract TCC were collected retrospectively, and analysed for clinical and pathological variables. Patients with previous invasive bladder tumours were excluded.

Type of renal calculi: variation with age and sex.

The aim of this paper is to study the variations in the percentage of the different types of renal stones with age and sex. Renal calculi were classified according to their composition and structure. Stone formers were divided according to age and sex, and the percentage of each kind of calculi in the different considered age periods for men and women were determined.