Is routine micropuncture access necessary for percutaneous nephrostomy? A randomized trial

Area of Science:

• Interventional Radiology
• Nephrology
• Urology

Background:

• Percutaneous nephrostomy is a common procedure for renal access.
• The choice of access technique can influence outcomes such as bleeding and pain.
• Micropuncture systems are sometimes used for finer control during access.

Purpose of the Study:

• To compare the efficacy and safety of the micropuncture technique versus the conventional large-bore needle approach for renal access during percutaneous nephrostomy.

Main Methods:

• A randomized study comparing micropuncture and large-bore needle techniques for percutaneous nephrostomy in patients with normal coagulation.
• 24 procedures in each group.
• Outcomes assessed included gross hematuria, urine red blood cell counts, pain scores, and procedural success.

Main Results:

• No statistically significant difference in gross hematuria or urine red blood cell counts between the groups.
• Fewer needle passes were required with the large-bore needle (1.7 vs. 2.8, p=0.01).
• No significant differences in pain scores or procedural success were observed; micropuncture procedures were slightly longer.

Conclusions:

• Micropuncture access for percutaneous nephrostomy in patients with normal coagulation does not offer significant advantages in reducing bleeding or pain.
• The technique requires more needle manipulations, potentially increasing procedure duration.
• The study does not support the routine use or additional costs associated with micropuncture access for this procedure.