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Focus on endo-urology

Epublication, Apr 2019;19(04). URL: https://websurg.com/doi/fc01en50
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Percutaneous nephrolithotomy
This is the case of a 60-year-old man with a large left kidney stone (>3cm) taking up the entire renal pelvis and lower calyceal cavities. Under general anesthesia, the patient is placed in a supine modified lithotomy position, with a 3L water bag underneath the left lumbar fossa to raise it. The left leg is straight whereas the right leg is put on a leg brace flexed.
A cystoscopy is performed in order to identify the left ureteral orifice and introduce a 7 French beveled ureteral stent. This stent is connected to a Foley catheter. A contrast agent is injected into the ureteral stent.
The kidney’s lower pole is punctured with an 18 Gauge hypodermic needle, making sure to stay in contact with the stone. A rigid Lunderquist® guidewire is passed into the needle. The pathway is dilated using metallic coaxial dilators and with a dilation balloon until an Amplatz® renal sheath is placed. The sheath will then be extended.
A nephroscopy is performed to identify the stone, fragment and aspirate it partially with the LithoClast Master® intracorporeal lithotripter. Some large fragments will be withdrawn with crocodile forceps. The lithotripter system fails to remove the residual stone. A Malecot®-type nephrostomy tube is used and the ureteral stent is replaced by means of a double J catheter.
C Saussine
Surgical intervention
1 year ago
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34:10
Percutaneous nephrolithotomy
This is the case of a 60-year-old man with a large left kidney stone (>3cm) taking up the entire renal pelvis and lower calyceal cavities. Under general anesthesia, the patient is placed in a supine modified lithotomy position, with a 3L water bag underneath the left lumbar fossa to raise it. The left leg is straight whereas the right leg is put on a leg brace flexed.
A cystoscopy is performed in order to identify the left ureteral orifice and introduce a 7 French beveled ureteral stent. This stent is connected to a Foley catheter. A contrast agent is injected into the ureteral stent.
The kidney’s lower pole is punctured with an 18 Gauge hypodermic needle, making sure to stay in contact with the stone. A rigid Lunderquist® guidewire is passed into the needle. The pathway is dilated using metallic coaxial dilators and with a dilation balloon until an Amplatz® renal sheath is placed. The sheath will then be extended.
A nephroscopy is performed to identify the stone, fragment and aspirate it partially with the LithoClast Master® intracorporeal lithotripter. Some large fragments will be withdrawn with crocodile forceps. The lithotripter system fails to remove the residual stone. A Malecot®-type nephrostomy tube is used and the ureteral stent is replaced by means of a double J catheter.