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Percutaneous nephrolithotomy (PCNL) is a minimally invasive procedure considered as the treatment of choice for the management of large-scale and fully-formed kidney stones.This procedure has a 5% risk of complications including bleeding, the lesion of the collecting system, the risk of urinary infection and bacteremia. New surgical tools such as dilatation of the nephrostomy tract with mechanical dilatation contribute to the reduction of these risks, together with an improvement in the operative times and a lower rate of complications.
At present there are multiple scales measuring the lithiasic morphology (Guy, the STONE nephrolitometry score system and the nomogram of the Office of Clinical Investigation of the Endourology Society - CROES) which allow to evaluate the degree of complexity of the stone, the possibility of residual stones and the risk of complications. These tools allow us to do a better analysis of the risk factors of the patient who will be taken to this type of endoscopic procedure in order to decrease morbidity and complication rates.
The use of pneumatic dilators during percutaneous nephrolithotomy reduces the rates of intraoperative and postoperative complications, which would have an impact on hospitalization times and surgical success for the management of renal stone.
Nephrolithiasis is a major worldwide source of morbidity, constituting a common urological disease affecting 10-15% of the world population, with a subsequent clinical relapse rate of approximately 50%. Recent technological and surgical advances have reduced the need for open surgery with less invasive procedures, such as percutaneous nephrolithotomy (PCNL), extracorporeal shock wave lithotripsy (SWL) and retrograde ureteroscopy. The selection of the surgical procedure generally depends on the size, composition, location of the renal stone, the existence of obstruction and anatomical variations of the urinary system. Today, PCNL is the established procedure for stone greater than 2 cm; The procedure usually involves three main stages: it begins with the insertion of a ureteral catheter to perform a retrograde study with contrast medium where the anatomy of the kidney is evaluated, then the puncture is performed by inserting a surgical needle on the skin to the specific location of the stone, with subsequent dilatation of the tract to the collecting system, and once this access has been made it is proceeded to carry out the fragmentation and extraction of the stone through various types of instruments.
The success and results of the treatment of surgery are very well known and highly dependent on precision in the puncture stage (the stones must be achieved with a precise and direct path), make this step is the most challenge for surgeons. The ideal access is one that allows complete removal of the stones while minimizing intraoperative bleeding. Needle punctures and their complications, such as kidney injuries and adjacent organs, eventually impair the overall surgical success and outcome of the patient. Although PCNL is considered minimally invasive surgery (MIS) with many associated benefits, such as the production of small incisions in the patient, reducing hospitalization time and postoperative recovery, some complications still occur frequently. The dilation of the nephrostomy tract is the second step in which there are more complications, since it depends on an optimal puncture of the collecting system and a precise manual control to avoid damages of the collecting system or to increase the risks of bleeding.
Restricted vision, difficulty in handling the Instrumental, restrictive mobility within the kidney, skill levels of hand-eye coordination of the surgeon, deviation of the needle, moving anatomical objective, are a constant challenge for the surgeon. Several technological advances have been proposed to improve the effectiveness of this procedure. In regard to puncture and dilatation, relevant contributions have been provided by the improvement in medical imaging techniques, as well as the fusion of multiple imaging procedures.
To determine the highest rate of intraoperative and early postoperative complications (bleeding, pain) with the use of the various methods of access to the renal collecting system during percutaneous nephrolithotomy for the treatment of kidney stones greater than 2 cm than 2 cm between April 2017 and January 2018.
percutaneous nephrolithotomy for kidney stones
Hospital Universitario Los Comuneros
Active, not recruiting
Los Comuneros Hospital Universitario Bucaramanga
Published on BioPortfolio: 2017-06-19T02:51:53-0400
The purpose of this study is to determine which type of percutaneous nephrolithotomy is better in large kidney stones
Percutaneous nephrolithotomy (PNL) has been considered as the first-line choice for the management of >20mm kidney stones. Microchannel percutaneous nephrolithotomy (Mini PCNL) which takes...
This is a prospective randomized study, comparing quality of life in renal stone patients undergoing surgical treatment with ureteroscopy (URS) versus percutaneous nephrolithotomy (PNL).
The investigators main hypothesis is that the stone free rate will be much higher (95%) in patients treated with PCNL than patients treated with ESWL where stone free rate is (60%) to dete...
It is aimed to evaluate the treatment results, rates of success and complications, and injury given to the kidney by measuring preoperative and postoperative blood urea, creatinine, Cystat...
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Percutaneous nephrolithotomy remains the standard of care for kidney stones larger than 2cm. Therefore, setting a prognosis for complete stone resolution through this method is essential. The prognost...
To validate and compare the stone scoring systems (stone size [S], tract length [T], obstruction [O], number of involved calices [N], and essence or stone density [E] [S.T.O.N.E.], Guy's Stone Score [...
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To compare the success and complication rates and advantages and disadvantages of retrograde intrarenal surgery (RIRS) and percutaneous nephrolithotomy (PNL) methods for the upper calyceal renal stone...
Stones in the URETER that are formed in the KIDNEY. They are rarely more than 5 mm in diameter for larger renal stones cannot enter ureters. They are often lodged at the ureteral narrowing and can cause excruciating renal colic.
A chronic inflammatory condition of the KIDNEY resulting in diffuse renal destruction, a grossly enlarged and nonfunctioning kidney associated with NEPHROLITHIASIS and KIDNEY STONES.
A severe pain in the lower back radiating to the groin, scrotum, and labia which is most commonly caused by a kidney stone (RENAL CALCULUS) passing through the URETER or by other urinary track blockage. It is often associated with nausea, vomiting, fever, restlessness, dull pain, frequent urination, and HEMATURIA.
Stones in the KIDNEY, usually formed in the urine-collecting area of the kidney (KIDNEY PELVIS). Their sizes vary and most contains CALCIUM OXALATE.
The insertion of a catheter through the skin and body wall into the kidney pelvis, mainly to provide urine drainage where the ureter is not functional. It is used also to remove or dissolve renal calculi and to diagnose ureteral obstruction.