An observational study in Renal Colic, Stone, Kidney and Hydronephrosis, sponsored by Kocaeli City Hospital. Active, not recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-08-17.
Sponsored by Kocaeli City Hospital · Observational
Patients presenting to the emergency department with symptoms suggestive of renal colic will be included in the study at Kocaeli City Hospital's emergency department. Patients with nephrolithiasis considered among the preliminary diagnoses will be enrolled in the study; demographic data, vital signs, and physical examination findings will be recorded on pre-prepared standard data forms.
STONE criteria scores will be calculated by emergency assistants, and bedside ultrasound will be performed for patients. Ultrasonographic findings suggestive of renal colic, such as hydronephrosis, the presence of primary stones, acoustic shadowing of the stone, the presence of twinkle artifact, presence of jet flow, and presence of bladder debris, will be evaluated, and the obtained data will be recorded on the standard data form by the performing assistant physician. In patients where computed tomography, which is the gold standard for detecting stone presence without intervention, is deemed appropriate without any intervention to the primary examining physician, the computed tomography results and ultrasound findings will be compared.
The study aims to evaluate the effectiveness of bedside ultrasound application in diagnosing stone presence in patients, its success in predicting re-admission to the hospital within 1 month, its success in predicting possible alternative diagnoses and complications, in addition to the stone criteria applied in the patients.
Our study is a prospective study that will be conducted in the Emergency Medicine Clinic of Kocaeli City Hospital. Patients aged 18 and above who present to the emergency department of Kocaeli City Hospital with symptoms suggestive of renal colic will be included in the study if they volunteer. After examination by a resident physician working in the emergency department, patients for whom nephrolithiasis is considered among the preliminary diagnoses will be notified to the principal investigators. After obtaining written consent, demographic data, vital signs, and physical examination findings will be recorded on previously prepared standard data forms.
Patients scoring 8 points or higher according to the STONE criteria based on history, physical examination, and laboratory results will undergo bedside ultrasound. The ultrasound will be performed by 4 resident physicians with a basic ultrasound course certificate from the Turkish Emergency Medicine Association, who have 2 years of experience. The bedside urinary ultrasound will be performed using the 'Esaote Mylab Gamma® device (Genoa, Italy)' ultrasound machine with the 'Esaote AC2541 curved array (1-8 MHz) probe (Genoa, Italy)' while the patient is in the supine position.
During renal ultrasound, the convex ultrasound probe will be placed in the right upper quadrant of the patient, intersecting the right lower intercostal area and the mid-axillary line. In the left upper quadrant, the probe will be placed in the lower intercostal area along the posterior axillary line. The ultrasound probe will be positioned longitudinally with the indicator pointing towards the patient's head. Subsequently, the same area will be imaged transversely with the indicator pointing towards the patient's right.
In these sections, images of the kidneys will be evaluated for the presence of hydronephrosis, the degree of expansion of pelvic-calyceal structures, stone size, kidney dimensions, parenchymal echogenicity, and the presence of primary stones or acoustic shadowing from stones. Then, from the suprapubic region, the probe will be positioned transversely and longitudinally, sequentially showing the patient's right and head; the presence of globules in the bladder, bladder dimensions, the presence of stones, and the degree of jet flow at the junction of the ureters with the bladder will be assessed using color frequency mode (CFM). The presence of twinkling artifacts with color frequency mode (CFM) will be evaluated when a stone is suspected. The data obtained will be recorded on the study form by the resident physician performing the ultrasound. The recorded data will later be compared with the gold standard diagnostic method, computed tomography routinely performed in patients with nephrolithiasis, for effectiveness.
79 studies on the registry are indexed under Renal Colic; 10 are open to participants now.
This study's planned enrollment of 490 is close to the median of 452 across 16 observational studies indexed under Renal Colic.
Browse Renal Colic studies →Kocaeli City Hospital is the lead sponsor of 44 studies on the registry; 19 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Volunteer patients over the age of 18 who applied to the emergency department of Kocaeli City Hospital with renal colic will be included in the study.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
- All volunteer patients
Exclusion Criteria:
To investigate the primary and secondary signs of stones with ultrasound and to additionally use the Stone criteria in patients with suspected nephrolithiasis.
Also known as: STONE criteria
Nephrolithiasis diagnostic accuracy
Adding bedside focused ultrasonography to the STONE criteria increases diagnostic accuracy in patients presenting to the emergency department with a preliminary diagnosis of nephrolithiasis.
Time frame: 2 year
Predicting the possible complications
The success of using POCUS in predicting possible complications in patients with nephrolithiasis.
Time frame: 2 year
Readmission to hospital.
Predicting hospital readmission rate within 1 month in patients with nephrolithiasis.
Time frame: 1 month
Plan to share: Undecided
This study is active, not recruiting, as verified in Aug 2025. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Kocaeli City Hospital