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The investigators aim to compare the performance of the Super Pulse Thulium fiber laser (SP TFL) with that of the standard Holmium: Yttrium-Aluminium-Garnet (Ho:YAG) laser. The investigators hypothesize that the electronically-modulated laser diodes, of the TFL offers the most comprehensive and flexible range of laser parameters among laser lithotripters leading to more efficient (4 times more) and effective stone dusting resulting in production of finer dust particles obviating the need for postoperative ureteric stenting which remains a major source of patient discomfort.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Super Pulse Thulium fiber Laser |
| ||
| Holmium: Yttrium-Aluminium-Garnet Laser |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Laser lithotripsy (SP TLF) | Device | Laser lithotripsy of urinary calculi using the Super Pulse Thulium fiber laser (SP TLF) |
|
| Measure | Description | Time Frame |
|---|---|---|
| To determine the efficiency of SP TFL in dusting stones | We plan to assess the direct impact of SP TFL to efficiently dust 10-30mm stones in the upper urinary tract . Metrics include time needed to ablate the stone i.e. ablation speed (stone volume mm3/sec) | 6 months |
| Mean ablation energy needed to ablate stone volume | We plan to assess the direct impact of SP TFL to effectively dust 10-30mm stones in the upper urinary tract . Metrics include ablation energy needed to ablate the stone volume (Stone volume mm3/Joules) | 6 months |
| Measure | Description | Time Frame |
|---|---|---|
| Number of stones cleared. | We plan to assess the direct impact of SP TFL to produce finer quality dust following disregarding of 10-30mm stones in the upper urinary tract that can spontaneously pass without the need for stenting . Metrics will be stone clearance on postoperative CT scans | 9 months |
| Number of participants reporting complications. |
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Inclusion Criteria:
Exclusion Criteria:
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Subjects eligible for this study will be identified via eRecord in the Urology Department (routine access) of patients who were diagnosed with upper urinary tract calculi who underwent surgery utilizing either high powered Ho:YAG or TL-SPL lasers.
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| Name | Affiliation | Role |
|---|---|---|
| Ahmed Ghazi, MD | Associate Professor | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Rochester Medical Center | Rochester | New York | 14642 | United States | ||
| University of Rochester |
No IPD will be shared with other researchers.
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| ID | Term |
|---|---|
| D014545 | Urinary Calculi |
| ID | Term |
|---|---|
| D052878 | Urolithiasis |
| D014570 | Urologic Diseases |
| D052776 | Female Urogenital Diseases |
| D005261 | Female Urogenital Diseases and Pregnancy Complications |
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| ID | Term |
|---|---|
| D017602 | Lithotripsy, Laser |
| ID | Term |
|---|---|
| D053685 | Laser Therapy |
| D013812 | Therapeutics |
| D008096 | Lithotripsy |
| D055011 | Ablation Techniques |
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| Laser lithotripsy (Ho:YAG) | Device | Laser lithotripsy of urinary calculi using the standard Holmium: Yttrium-Aluminium-Garnet (Ho:YAG) laser. |
|
We plan to assess the direct impact of SP TFL to safely dust 10-30mm stones in the upper urinary tract . Metrics collected will include review of medical record for the presence of complications (e.g. infection, sepsis, obstruction etc.) for 3 months postoperative related to laser lithotripsy. |
| 9 months |
| Rochester |
| New York |
| 14642 |
| United States |
| D000091642 | Urogenital Diseases |
| D052801 | Male Urogenital Diseases |
| D002137 | Calculi |
| D020763 | Pathological Conditions, Anatomical |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D013514 |
| Surgical Procedures, Operative |
| D059708 | Ultrasonic Surgical Procedures |