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Effect of focal zone size on ESWL outcome

A randomized study to investigate the effect of focal zone size on treatment outcomes in patients undergoing extracorporeal shockwave lithotripsy to renal calculi

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR-INR-16008475
Enrollment
Unknown
Registered
2016-05-09
Start date
2017-01-01
Completion date
Unknown
Last updated
2019-05-13

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

Conditions

Renal calculi

Interventions

Two groups:extracorporeal shockwave lithotripsy with an extended focal zone versus extracorporeal shockwave lithotripsy with standard focal zone, 1 hour, 1 time

Sponsors

The Chinese University of Hong Kong
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Adult patient with age greater than or equal to 18 years old; 2. Solitary radio-opaque renal calculi of size 5-15 mm in maximal diameter; 3. Clinically indicated for SWL.

Exclusion criteria

Exclusion criteria: 1. Stones associated with any renal or ureteric anatomical abnormality, such as medullary spongy kidneys, caliceal diverticulum, horseshoe kidney, ureteropelvic junction obstruction; 2. Patients with ureteric stent or nephrostomy tube in-situ or within 3 months of SWL; 3. Patients with a known history of cystine stone; 4. Patients with multiple renal calculi within the same calyx.

Design outcomes

Primary

MeasureTime frame
Successful treatment at 12-weeks after one session of SWL;

Secondary

MeasureTime frame
Degree of acute renal injury;Incidence of renal haematoma after SWL;Incidence of adverse events;Pain experienced by patients during treatment;The total analgesia consumed;Stone free rate;

Countries

China

Contacts

Public ContactNg Chi Fai

The Chinese University of Hong Kong

ngcf@surgery.cuhk.edu.hk+86 26322625

Outcome results

None listed

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