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Saturday, August 13, 2011

How to choose lithotripsy unit ?



1. What is the focal zone of the lithotripter?
2. What is the peak pressure at the focal zone?
3. Is the energy delivery at focal zone consistent?
4. Is the energy delivered at focal zone adequate (not more than required for stone fragmentation)?
5. Do I have enough control over the energy delivered manually?
6. Do I have enough steps of increasing energy before I reach desired energy level?
7. Does every patient require anesthesia for lithotripsy?
8. Do I have dynamic monitoring of stone during lithotripsy?

Try to grade lithotripsy unit in following category.

Properties of lithotripsy

Machine A

Machine B

Machine C

Focal zone

Larger the better

Energy delivery at focal zone

Is the energy at focal zone constant

Control over the energy delivered manually

Does machine have manual selection of energy

Steps of increasing energy before you reach desired energy level

More the steps better

Patient require anesthesia (GA/SA)

Ideally no anesthesia or only analgesia should be required

Dynamic monitoring -USG

USG is better for Lithotripsy

Total score

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