A prospective study to investigate the effect of stepwise voltage escalation on treatment outcome in extracorporeal shockwave lithotripsy of renal calculi

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR-TRC-14004710

Enrollment

Unknown

Registered

2014-05-28

Start date

2014-06-15

Completion date

Unknown

Last updated

2017-04-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Renal stone

Interventions

Two groups:Stepwise voltage escalation in extracorporeal shockwave lithotripsy 30 - 60 minutes versus Standard fixed voltage with 30-60 minutes duration

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Adult patient (aged >=18 years old). Solitary radio-opaque renal stones of size 5-15mm in maximal diameter as measured from plain radiography. Clinically decided for primary ESWL.

Exclusion criteria

Exclusion criteria: Stones associated with renal or ureteric anatomical abnormality. Patients with ureteric stent or nephrostomy tube inserted. History of cystine stone. Multiple stones in the same calyx. Currently taking alpha-blocker or calcium-channel blocker or systemic corticosteroids. History of allergy or any abnormal reaction with alfentanil.

Design outcomes

Primary

Measure	Time frame
Treatment successfulness at 12 week;	—

Secondary

Measure	Time frame
Degree of renal injury. Maximal pain score. Analge;	—

Countries

China

Contacts

Public ContactNG CHI FAI

ngcf@surgery.cuhk.edu.hk+852 2632 1663

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026