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PubMed1979

Use and abuse of retrograde pyelography.

Retrograde pyelography to demonstrate the renal pelvis and ureters is a common urologic procedure. Newer contrast materials and better radiographic techniques have obviated many of the previous indications for retrograde studies were independently reviewed by two urologists and a radiologist to determine if the studies were indicated, appropriately timed, informative, and complete. Our results indicate a high percentage of these examinations are incompletely performed and uninformative and could have been replaced by noninvasive studies. What constitutes a complete retrograde study and when to utilize this examination is discussed.

Evaluation Studies as Topic↗
PubMed1993

Contrast media reactions during voiding cystourethrography or retrograde pyelography.

Contrast media can be absorbed across the urothelium in amounts sufficient to cause severe anaphylactoid reactions. We report 2 cases of anaphylactoid reactions during voiding cystourethrography (VCUG) or retrograde pyelography (RGP). A retrospective review of 783 consecutive VCUGs or RGPs performed at our institution over the last five years revealed no other systemic contrast media reactions. Although our findings and a review of the literature discloses that the incidence appears to be extremely low, urologists and radiologists need to be aware that an anaphylactoid or vagal contrast medium reaction may develop during VCUGs or RGPs. In addition, these physicians need to be prepared to treat a reaction should one occur.

Anaphylaxis↗
PubMed1988

Refractory bradycardia during retrograde pyelography and spinal anesthesia.

Bradycardia commonly occurs during spinal anesthesia as a result of vagally mediated slowing of sinoatrial (SA) node firing. Peritoneal traction or urinary bladder distension, for example, may serve as a stimulus for SA node inhibition, particularly when thoracic levels of spinal anesthesia interrupt function of the sympathetic limb of the autonomic nervous system. Although atropine dependably reverses such heart rate slowing, we recently encountered, during spinal anesthesia for cystoscopy and retrograde pyelography, bradycardia that was unexpected and refractory to treatment with atropine.

Aged↗
PubMed1977

Ascending uretero-pyelography in renal failure.

Ascending uretero-pyelography has been carried out over a period of 13 years in 97 consecutive patients with undiagnosed renal failure. Sixty-nine were in a non-obstructive uropathy group while 26 had ureteric obstructions. There were two failures. Over 60% of examinations were performed under local anaesthesia, each examination taking an average of 20 min. There has been no mortality and two anaesthetic complications have been the only significant morbidity. Ureteric injury, urinary infection and renal function have all been investigated and recorded. Five per cent of patients developed urinary infection following AUP but without any major consequences. No significant ureteric injury occurred and no late sequelae were noted. Neither any reaction to contrast medium nor any further deterioration in renal function was observed; AUP was diagnostic in 46% of patients. In the remainder it ruled out obstructive uropathy and gave useful information about the kidneys, ureters and bladder. In experienced hands and with proper facilities AUP is safe and can be helpful in the diagnosis and management of patients in renal failure.

Adolescent↗
PubMed1983

Air embolism: a potential complication of retrograde pyelography.

We report 2 cases of venous air embolism as a complication of retrograde pyelography. The pyelovenous route of embolization was documented radiographically. The mechanisms of pyelovenous backflow are reviewed and the clinical implications of this phenomenon are discussed. Pyelovenous backflow may provide the mechanism for air embolism when gas is present in the urinary tract.

Adult↗
PubMed1978

Hydronephrosis with ureteral valve: diagnosis by ultrasonography and antegrade pyelography.

A case of massive hydronephrosis secondary to a ureteral valve was discovered upon evaluation of mild trauma. The orderly diagnostic studies, including ultrasonography and antegrade pyelography, led to the correct diagnosis and appropriate therapy. Ultrasonography as a diagnostic tool in urology is discussed and characteristics of the 18 cases of ureteral valves reported to date are reviewed.

Child↗
PubMed1976

Infusion pyelography in anuric patients.

The spectrum for the use of retrograde pyelography in renal failure has been narrowed further by extending the facility of infusion urography to anuric patients. The latter study has helped greatly in sifting apart pre-renal and renal anuria patients from those with obstructive uropathy. In obstructive anuria infusion urography has proved comprehensive in influencing judgment about the exact site and nature of obstruction, in affixing laterality towards the better functioning renal unit and in deciding a suitable definitive operation or planned staged procedures.

Acute Kidney Injury↗
PubMed1975

Percutaneous renal biopsy with localization by retrograde pyelography.

We describe the use of retrograde pyelography for renal localization during percutaneous biopsy in 6 patients. Since we have had no major complications with this procedure and have obtained adequate tissue in all cases we conclude that this method of localization for renal biopsy is the procedure of choice in the severely uremic patient.

Adult↗
PubMed1986

Indications for intravenous pyelography in trauma.

The cornerstone for radiographic evaluation of genitourinary trauma is intravenous pyelography (IVP). Despite its widespread use, however, the indications for emergency IVP in trauma remain controversial. Some authors recommend the use of an IVP for all patients with hematuria, while others are selective, basing their decision on the degree of hematuria or such other factors as the mechanism of injury, physical examination, or the presence of associated injuries. Based on the data reviewed for blunt and penetrating trauma, we recommend that an IVP be performed in: all patients with gross hematuria; all patients who present with pain or tenderness that could be referrable to the genitourinary tract, even in the absence of hematuria; all patients with flank hematoma or ecchymosis; and all patients with penetrating trauma that could reasonably be expected to injure the genitourinary tract. Recently computed tomography (CT) has been proposed for the evaluation of renal trauma. The CT proponents cite superior definition of the extent of renal injury and superior detection of injuries not clinically suspected. Some have proposed the following algorithm, incorporating computed tomography. If an isolated renal injury is suspected clinically, an emergency IVP is performed. If the IVP is normal, expectant conservative treatment follows. If the IVP is abnormal or if the patient has persistent symptoms, an emergency CT scan is performed. Furthermore computed tomography is performed initially in the stable patient with multiple trauma and in the patient with suspected severe renal injury. While this algorithm has not been universally accepted, future studies confirming the theoretical advantages of this approach are anticipated.

Child↗
PubMed1995

Emergency intravenous pyelography in the setting of possible renal colic: is it indicated?

STUDY OBJECTIVE: To determine whether emergency IV pyelography (IVP) adds significant information to clinical judgment in the setting of possible renal colic. DESIGN: A prospective voluntary survey of a convenience sample of physicians at the time of patient encounter. SETTING: The emergency department of a university hospital, annual census 50,000 visits. PARTICIPANTS: Emergency medicine faculty physicians. INTERVENTION: Physicians were surveyed before and after IVP was performed on patients with possible renal colic. RESULTS: Over the course of 12 months, 62 patients with possible kidney stones were evaluated by 14 different faculty ED physicians, who filled out surveys. Before IVP results were obtained, 63% of patients were thought to have a high (more than 75%) probability of ureteral obstruction. In 59% of these patients, the IVP results showed ureteral obstruction. The IVP revealed unexpected findings in 42% of all patients, including normal results in 19%, ureteral stones in 5%, higher than expected grade of obstruction in 6%, and lower than expected grade of obstruction in 6%, and lower than expected grade of obstruction in 5%. Management was reported to have been changed in 60% of all patients for a wide variety of reasons, but consideration of alternative diagnosis was the most common reason, occurring in 23%. Management changes included unexpected hospital admission in five patients (9%) and emergency urologic consultation in five patients (9%). CONCLUSION: Emergency IVPs are useful in the evaluation of patients with suspected renal colic, primarily when they rule out ureteral obstruction and allow consideration of alternative diagnoses. Not uncommonly, emergency urologic consultation or hospitalization occurs on the basis of IVP findings.

Adolescent↗
PubMed2001

Sudden hearing loss following drip intravenous pyelography with iohexol: a case report.

A 37-year-old male developed severe sensorineural hearing loss (SNHL) following drip intravenous pyelography with iohexol. We suggest that this hearing disturbance might have been caused by a delayed allergic reaction to iohexol or to its toxicity, because hearing loss developed several hours after the infusion of iohexol. No improvement in hearing was achieved after various treatments. This is the first report of SNHL possibly attributable to the adverse effects of iohexol.

Adult↗
PubMed2003

Renal colic: a prospective evaluation of non-enhanced spiral CT versus intravenous pyelography.

The aim of this study was to compare non-enhanced spiral CT (NECT) and intravenous pyelography (IVP) in patients with suspected acute renal colic. Two-hundred patients presenting to the Emergency Department with suspected acute renal colic were randomized into groups undergoing NECT or IVP. The main outcome measures were diagnostic utility, incidence of alternative diagnoses, requirement for further imaging, length of hospital stay, urological intervention rates, radiation dosage and costs. Non-enhanced spiral CT was better than IVP in making a definitive diagnosis of ureteric calculus or of recent calculus passage (65/102 or 66% vs 42/98 or 41%; P = 0.003). Calculi were missed in two patients in the IVP group. Two patients in each group had alternative diagnoses by initial imaging. There was no difference in the length of hospital stay or intervention rate. More plain X-rays during admission and more IVPs during follow up were performed in the NECT group. Effective radiation dosages were 2.97 mSv (IVP) and up to 5 mSv (NECT). Non-enhanced spiral CT provided greater diagnostic utility in this randomized comparison but no difference in measured outcomes. The incidence of alternative diagnoses was low, probably due to patient selection. Financial costs for each modality are comparable in a public tertiary hospital. Radiation dosages are higher for NECT and, for this reason, it might be appropriate to consider limiting NECT use to patients who have do not have classical symptoms of renal colic, to older patients and those with a contraindication to the administration of intravenous contrast media.

Acute Disease↗
PubMed2003

Individual patient variation and inter-rater reliability of lower calyceal infundibular width on routine intravenous pyelography.

OBJECTIVE: To standardise infundibular width (IFW) measurement, to determine patient variability, and to determine inter-rater variability on intravenous pyelography (IVP). PATIENTS AND METHODS: Fifty outpatient IVP films were randomly drawn from two hospitals between 1 July 1998 and 31 August 1999, and examined to measure the lower calyceal IFW on the 5, 10 and 20 min films with compression, and after voiding. Kidneys with previous renal surgery, hydronephrosis or renal anatomical anomalies were excluded; in all, 81 kidneys from 50 patients were examined. The IFW was measured at the narrowest point along the infundibulum. All 50 films were then reviewed by two urologists unaware of their origin, to determine the inter-rater reliability of the infundibular measurements. RESULTS: Analysis of variance (anova) with posthoc analysis showed a significant difference in IFW at each phase of the IVP (repeated measures anova, P < 0.001). The mean (95% confidence interval) IFW was greatest on the compression film, at 4.4 (2.6) mm, and least on the postvoid film, at 1.6 (2.1) mm. Overall inter-rater reliability was 0.9780 (intraclass correlation coefficient), and the Pearson correlation between each rater for the IFW at each phase of the IVP was >/= 0.886. CONCLUSIONS: There is wide variability in lower calyceal IFW among the various IVP films in a given study. Thus any predictive value of the IFW must be standardized for the timing and IVP film type (compression, postvoid, etc.). The inter-rater reliability of IFW is high, suggesting that if used correctly it may be more useful in predicting the outcome after shock wave lithotripsy.

Adolescent↗
PubMed1977

[Fine needle puncture for antegrade pyelography and percutaneous nephropyelostomy (author's transl)].

A method for antegrade pyelography and pyelonephrostomy is described using a long, thin needle with a shorter, wider Seldinger cannula. Puncture with a thin needle reduces the risk during antegrade demonstration of the upper urinary tract and can also be used for puncturing collecting systems which are only slightly dilated. When necessary, the Seldinger cannula can be advanced over the needle; subsequently, with the aid of a J-wire, a nephropyelostomy can be performed. The method has been used in 20 patients. In one case of intended bilateral nephropyelostomy the puncture was successful on only one side. There were no serious complications. In only one patient a small perirenal haematoma was found at operation.

Catheterization↗
PubMed2005

[Diagnostic assessment of painless microhematuria: prospective study comparing image quality, assessibility and diagnostic certainty of multidetector-row CT and intravenous pyelography within a single examination].

PURPOSE: The purpose of this study is to prospectively compare intravenous pyelography (IVP) and combined unenhanced and excretory phase multidetector-row CT (MDCT) with respect to image quality, diagnostic certainty and diagnostic concordance with the final clinical diagnosis in patients with painless microhematuria. MATERIALS AND METHODS: Unenhanced MDCT, IVP and excretory phase MDCT were performed in 59 consecutive patients (21 women, 38 men, mean age 56 +/- 19 years, range 23 - 83 years) with painless microhematuria of unknown origin during a single examination with a single contrast media application (100 ml, non-ionic iodinated contrast media). Images were assessed by two experienced urogenital radiologists in consensus for image quality, diagnostic certainty of stone detection, obstruction, parenchymal lesions and morphological distinctive features. Imaging diagnoses of MDCT and IVP were compared with the final clinical diagnoses. In case of failure to detect an relevant pathology, the final clinical diagnosis was established after a mean follow-up period of 18 +/- 6 months (10 months to 2 years). Costs and radiation exposure of IVP and MDCT were compared. RESULTS: MDCT scan performed better than IVP in terms of image quality for all regarded variables. Image quality of MDCT was rated in all parameters as very good or good; the image quality of IVP differed in a wide range. MDCT and IVP reached a sensitivity of 100 % and 50 % for stone detection (n = 14, p = 0.008), respectively. Two bladder stones were not detected by IVU but correctly seen with MDCT. MDCT and IVP were unsatisfactory for detecting transitional cell carcinomas (n = 4, 2 of 4 detected with MDCT, 0 of 4 detected with IVU). One false positive transitional cell carcinoma was detected with IVP, none with MDCT. Additional relevant pathological changes (one teratoma, one abdominal aortic aneurysma and one abscess) were detected using MDCT but missed with IVP. In 38 of 59 patients (64 %) imaging and clinical follow-up over up to 24 months did not reveal any pathology to explain the microhematuria. The costs of the IVP (283 Euro) were lower compared with non-enhanced MDCT (380 Euro) or combined non-enhanced and contrast-enhanced MDCT (560 Euro). The radiation exposure was 23 - 27 mSv for MDCT and 2.3 mSv for IVP. CONCLUSION: MDCT performed better regarding image quality, subjective diagnostic certainty and diagnostic results with respect to stone detection. Since urolithiasis is a frequent cause of painless microhematuria MDCT is recommended as the initial imaging modality rather than IVU.

Adult↗