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Iatrogenic Renal Artery Injury in 90 Cases: Arteriographic Findings and Outcomes after Embolization for Bleeding. J Vasc Interv Radiol 2023; 34:436-444. [PMID: 36414115 DOI: 10.1016/j.jvir.2022.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 10/19/2022] [Accepted: 11/13/2022] [Indexed: 11/21/2022] Open
Abstract
PURPOSE To evaluate differences in arteriographic findings and outcomes after embolization among patients with a suspected iatrogenic renal arterial injury (IRAI). MATERIALS AND METHODS Patients at the authors' institution who underwent renal arteriography for suspected IRAIs after partial nephrectomy, biopsy, or percutaneous access over a 20-year period were included. Records, imaging, and outcomes were reviewed. Data analysis was performed using the Fisher exact or Kruskal-Wallis test. RESULTS Ninety arteriograms were performed on 83 patients after partial nephrectomy (n = 32), biopsy (n = 27), or percutaneous access (n = 24), including for nephrostomy/ureterostomy and stone removal. The median number of days between the index procedure and arteriogram was highest (15 days) after partial nephrectomy and lowest (5 days) after biopsy (P = .0001). Embolization was performed during 76% of arteriograms. If prearteriographic imaging showed positive results for IRAIs, embolization was performed in 67% versus 33% if imaging showed negative results (P = .005). The transfusion rate was higher after biopsy than after partial nephrectomy or percutaneous access (P = .002). Acute kidney injury after arteriogram occurred in 7% of patients; however, all returned to baseline by 1 week. CONCLUSIONS Despite the different mechanism of IRAIs in partial nephrectomy, biopsy, and percutaneous access, arteriographic findings and outcomes were overall similar among groups. Prearteriographic imaging can help identify IRAIs but cannot supersede the clinical judgment regarding indication for embolization. IRAIs can present acutely or after a long interim, although patients who underwent biopsy presented earlier and more frequently required a blood transfusion. IRAIs can be treated with embolization without permanent deleterious effects on renal function.
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Anders SM, Helena G, Katharina B, Raquel T, Torkel BB. Visualization of the renal artery in kidney transplant patients using time-resolved computed tomography angiography. Acta Radiol Open 2021; 10:20584601211046334. [PMID: 34616566 PMCID: PMC8489769 DOI: 10.1177/20584601211046334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
Background Transplant renal artery stenosis (TRAS) is a post-operative complication which most often occurs between 3 months and 2 years after transplantation. TRAS is associated with kidney failure and hypertension and, thereby, with an increased risk of cardiovascular events. Purpose The purpose of this retrospective study was to report our experience of perfusion computed tomography angiography (P-CTA) to identify a 50% lumen reduction (as compared to digital subtraction angiography, DSA), assess its subjective image quality and evaluate if contrast-induced acute kidney injury (CI-AKI) occurred. Material and Methods All 13 patients who had undergone P-CTA for suspected TRAS at our institution were retrospectively evaluated. At P-CTA, eight or 12 g of iodine were administered intravenously, and five to seven scan sequences were merged into time-resolved images after motion correction. Eight patients underwent subsequent DSA. Results The average patient weight was 76 kg (range 55-97 kg). Image quality was rated as good or excellent for all patients, and pathological changes were shown in 10 of 13 patients undergoing P-CTA. Two patients had a serum creatinine increase of >26 μmol/L during the first 3 days, but serum creatinine was significantly lower in all patients 1 month after P-CTA (165+/-69 μmol/L versus 232+/-66 μmol/L, P < .01). The diagnosis at P-CTA was verified in all eight patients who underwent DSA. However, in two cases with suspected stenosis, renal function was restored without angioplasty. Conclusion Anatomy and blood flow of the transplant renal artery can be visualized using less than a third of the standard contrast media dose by using P-CTA technique.
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Affiliation(s)
- Svensson-Marcial Anders
- Department of Radiology, Karolinska University Hospital, Huddinge, Sweden.,Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology at Karolinska Institute, Stockholm, Sweden
| | - Genberg Helena
- Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology at Karolinska Institute, Stockholm, Sweden.,Department of Transplantation Surgery, Karolinska University Hospital, Huddinge, Sweden
| | - Brehmer Katharina
- Department of Radiology, Karolinska University Hospital, Huddinge, Sweden.,Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology at Karolinska Institute, Stockholm, Sweden
| | - Themudo Raquel
- Department of Radiology, Karolinska University Hospital, Huddinge, Sweden.,Departments of Molecular Medicine and Surgery, Clinical Physiology at Karolinska Institute, Stockholm, Sweden
| | - Brismar B Torkel
- Department of Radiology, Karolinska University Hospital, Huddinge, Sweden.,Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology at Karolinska Institute, Stockholm, Sweden
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Nakamura M, Ambe Y, Teshima T, Shirakawa N, Inatsu H, Amakawa R, Inoue Y, Yoshimatsu T, Imai S, Kusakabe M, Morikawa T, Kameyama S, Shiga Y. Assessment of surgical outcomes of off-clamp open partial nephrectomy without renorrhaphy for ≥T1b renal tumours. Int J Clin Oncol 2021; 26:1955-1960. [PMID: 34136964 DOI: 10.1007/s10147-021-01966-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/06/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE To assess the surgical outcomes of off-clamp open partial nephrectomy without renorrhaphy. In the era of robot-assisted surgeries, open partial nephrectomy remains a surgical option for ≥ T1b renal tumours. Although the necessity of renal pedicle clamping and renorrhaphy in open partial nephrectomy for larger tumours remains to be discussed, reports on this issue are rare. METHODS Twenty-seven open partial nephrectomies for ≥ T1b renal tumours were performed without renal pedicle clamping or renorrhaphy. A soft coagulation system was used to control bleeding from the resection bed. Surgical results, complications, and predictors of perioperative estimated glomerular filtration rate (eGFR) preservation at 1 month and 3 months after surgery were analysed. RESULTS The median estimated volume of blood loss was 420 mL. The rates of perioperative eGFR preservation were 88.9 and 87.3% at 1 and 3 months after surgery, respectively. Tumour size was an independent predictor of perioperative eGFR preservation at 1 month after surgery, whereas age and exophytic/endophytic properties of the tumour were independent predictors of perioperative eGFR preservation at 3 months after surgery. CONCLUSION Open partial nephrectomy without renal pedicle clamping or renorrhaphy could be safely performed for ≥ T1b renal tumours, even when tumours were entirely endophytic and located close to the renal pedicle. Mild perioperative eGFR reduction was observed. Although surgical indications should be carefully considered in these cases, off-clamp open partial nephrectomy without renorrhaphy is a feasible procedure for patients with ≥ T1b renal tumours.
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Affiliation(s)
- Masaki Nakamura
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan.
| | - Yoshiki Ambe
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Taro Teshima
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Norihide Shirakawa
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Hiroki Inatsu
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Ryo Amakawa
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Yasushi Inoue
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Tadashi Yoshimatsu
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Shunsuke Imai
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | | | - Teppei Morikawa
- Department of Diagnostic Pathology, NTT Medical Center Tokyo, Tokyo, Japan
| | - Shuji Kameyama
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
| | - Yoshiyuki Shiga
- Department of Urology, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo, 141-8625, Japan
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