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Mini access guide to simplify calyceal access during percutaneous nephrolithotomy: A novel device.
Indian J Urol 2017 Oct-Dec; 33(4):319-322IJ

Abstract

INTRODUCTION

A precise puncture of the renal collecting system is the most essential step for percutaneous nephrolithotomy (PCNL). There are many techniques describing this crucial first step in PCNL including the bull's eye technique, triangulation technique, free-hand technique, and gradual descensus technique. We describe a novel puncture guide to assist accurate percutaneous needle placement during bull's eye technique.

METHODS

The mini access guide (MAG) stabilizes the initial puncture needle by mounting it on an adjustable multidirectional carrier fixed to the patient's skin, which aids in achieving the "bull's eye" puncture. It also avoids a direct fluoroscopic exposure of the urologist's hand during the puncture. Sixty consecutive patients with solitary renal calculus were randomized to traditional hand versus MAG puncture during bull's eye technique of puncture and the fluoroscopy time was assessed.

RESULTS

The median fluoroscopy screening time for traditional free-hand bull's eye and MAG-guided bull's eye puncture (fluoroscopic screening time for puncture) was 55 versus 21 s (P = 0.001) and the median time to puncture was 80 versus 55 s (P = 0.052), respectively. Novice residents also learned puncture technique faster with MAG on simulator.

CONCLUSION

The MAG is a simple, portable, cheap, and novel assistant to achieve successful PCNL puncture. It would be of great help for novices to establish access during their learning phase of PCNL. It would also be an asset toward significantly decreasing the radiation dose during PCNL access.

Authors+Show Affiliations

Department of Urology, KPC Medical College, Kolkata, West Bengal, India.Department of Urology, AIIMS, Bhubaneshwar, Odisha, India.Department of Pathology, KPC Medical College, Kolkata, West Bengal, India.Department of Urology, KPC Medical College, Kolkata, West Bengal, India.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29021658

Citation

Chowdhury, Puskar Shyam, et al. "Mini Access Guide to Simplify Calyceal Access During Percutaneous Nephrolithotomy: a Novel Device." Indian Journal of Urology : IJU : Journal of the Urological Society of India, vol. 33, no. 4, 2017, pp. 319-322.
Chowdhury PS, Nayak P, David D, et al. Mini access guide to simplify calyceal access during percutaneous nephrolithotomy: A novel device. Indian J Urol. 2017;33(4):319-322.
Chowdhury, P. S., Nayak, P., David, D., & Mallick, S. (2017). Mini access guide to simplify calyceal access during percutaneous nephrolithotomy: A novel device. Indian Journal of Urology : IJU : Journal of the Urological Society of India, 33(4), pp. 319-322. doi:10.4103/iju.IJU_404_16.
Chowdhury PS, et al. Mini Access Guide to Simplify Calyceal Access During Percutaneous Nephrolithotomy: a Novel Device. Indian J Urol. 2017;33(4):319-322. PubMed PMID: 29021658.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mini access guide to simplify calyceal access during percutaneous nephrolithotomy: A novel device. AU - Chowdhury,Puskar Shyam, AU - Nayak,Prasant, AU - David,Deepak, AU - Mallick,Sujata, PY - 2017/10/13/entrez PY - 2017/10/13/pubmed PY - 2017/10/13/medline SP - 319 EP - 322 JF - Indian journal of urology : IJU : journal of the Urological Society of India JO - Indian J Urol VL - 33 IS - 4 N2 - INTRODUCTION: A precise puncture of the renal collecting system is the most essential step for percutaneous nephrolithotomy (PCNL). There are many techniques describing this crucial first step in PCNL including the bull's eye technique, triangulation technique, free-hand technique, and gradual descensus technique. We describe a novel puncture guide to assist accurate percutaneous needle placement during bull's eye technique. METHODS: The mini access guide (MAG) stabilizes the initial puncture needle by mounting it on an adjustable multidirectional carrier fixed to the patient's skin, which aids in achieving the "bull's eye" puncture. It also avoids a direct fluoroscopic exposure of the urologist's hand during the puncture. Sixty consecutive patients with solitary renal calculus were randomized to traditional hand versus MAG puncture during bull's eye technique of puncture and the fluoroscopy time was assessed. RESULTS: The median fluoroscopy screening time for traditional free-hand bull's eye and MAG-guided bull's eye puncture (fluoroscopic screening time for puncture) was 55 versus 21 s (P = 0.001) and the median time to puncture was 80 versus 55 s (P = 0.052), respectively. Novice residents also learned puncture technique faster with MAG on simulator. CONCLUSION: The MAG is a simple, portable, cheap, and novel assistant to achieve successful PCNL puncture. It would be of great help for novices to establish access during their learning phase of PCNL. It would also be an asset toward significantly decreasing the radiation dose during PCNL access. SN - 0970-1591 UR - https://www.unboundmedicine.com/medline/citation/29021658/Mini_access_guide_to_simplify_calyceal_access_during_percutaneous_nephrolithotomy:_A_novel_device L2 - http://www.indianjurol.com/article.asp?issn=0970-1591;year=2017;volume=33;issue=4;spage=319;epage=322;aulast=Chowdhury DB - PRIME DP - Unbound Medicine ER -