Quantified power Doppler as a predictor of delayed graft function after renal transplantation

Contti, Mariana Moraes; Garcia, Patrícia Carvalho; Kojima, Cristiane Akemi; Nga, Hong Si; Carvalho, Maria Fernanda; Andrade, Luís Gustavo Modelli de

doi:10.1007/s11255-014-0896-6

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…14 Several studies have found that PDU correlates well with invasively measured renal blood flow. 15,16 Recent studies also indicate that semiquantitative PDU scores could help predict delayed graft function after renal transplantation 17 and evaluate the severity and prognosis of AKI. 18 However, semiquantitative PDU scores present several disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Semiquantitative Power Doppler Ultrasound Score to Predict Acute Kidney Injury in Patients With Sepsis or Cardiac Failure: A Prospective Observational Study

Zhi

Zhao

Nie

et al. 2019

J Intensive Care Med

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Background: Diagnosing acute kidney injury (AKI) stage 3 in critically ill patients may help physicians in making treatment decisions. This diagnosis relies chiefly on urinary output and serum creatinine, which may be of limited value. This study aimed to explore the diagnostic performance of renal resistive index (RRI) and semiquantitative power Doppler ultrasound (PDU) scores in predicting AKI stage 3 in patients with sepsis or cardiac failure. Methods: This study is a prospective observational study that included 83 patients (40 with sepsis and 43 with cardiac failure). Renal resistive index and semiquantitative PDU scores were measured within 6 hours following admission to the intensive care unit. Acute kidney injury was defined according to the criteria set by Kidney Disease Improving Global Outcomes. Results: The predictive values of RRI (area under the curve [AUC] = 0.772, 95% confidence interval [CI] = 0.658-0.886) and PDU score (AUC = 0.780, 95% CI = 0.667-0.892) were similar in all patients. Power Doppler ultrasound score (AUC = 0.910, 95% CI = 0.815-1.000) could effectively predict AKI stage 3 in the cardiac failure subgroup, and the optimal cutoff for this parameter was ≤ 1 (sensitivity = 87.5%, specificity = 92.6%, Youden index = 0.801, accuracy in our population = 90.7%). However, PDU scores (AUC = 0.620, 95% CI = 0.425-0.814) could not predict AKI stage 3 in the sepsis subgroup. The predictive values of RRI for AKI stage 3 in the cardiac failure (AUC = 0.820, 95% CI = 0.666-0.974) and sepsis (AUC = 0.724, 95% CI = 0.538-0.910) subgroups were similar. Conclusions: Power Doppler ultrasound scores could effectively predict AKI stage 3 in patients with cardiac failure but not in patients with sepsis. Renal resistive index is a poor predictor of AKI stage 3 in patients with sepsis or cardiac failure.

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Section: Introductionmentioning

confidence: 99%

Semiquantitative Power Doppler Ultrasound Score to Predict Acute Kidney Injury in Patients With Sepsis or Cardiac Failure: A Prospective Observational Study

Zhi

Zhao

Nie

et al. 2019

J Intensive Care Med

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“…The Doppler ultrasound on the first three days after transplantation was helpful to detect the acute graft dysfunctions as rejection and surgical complications. 9 This image data and the absence of thrombi in the surgical specimen disfavor any renal allograft thrombosis, a condition responsible for 2-7% of early allograft losses in adults occurring in the postoperative period, with a peak incidence of 48 hours. Thrombosis may be related to technical problems during the vascular clamp or, in some cases, to the presence of atheroma, which represents the only independent factor associated with the risk of arterial renal thrombosis.…”

Section: Discussionmentioning

confidence: 90%

Emphysematous pyelonephritis in a transplanted kidney

Oliveira¹,

Garcia²,

Viero³

2016

ACR

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Emphysematous pyelonephritis is a rare infection characterized by necrosis and gas accumulation in the renal parenchyma, adjacent tissues, and/or urinary collecting system. This entity is rarely reported in transplanted kidneys. Computed tomography imaging is necessary for diagnosis and risk classification. The authors described the case of a 58-year-old man who underwent a kidney transplant and presented sepsis from a urinary tract infection. An abdominal tomography showed some characteristics of emphysematous pyelonephritis associated with an abscess. A graft biopsy, performed 45 days after the transplant, failed to show signs of infection, and tubule-interstitial and vascular rejection were ruled out. The patient had a poor outcome, and a nephrectomy was needed, the pathological analysis of which yielded the diagnosis of chronic pyelonephritis with necrotizing papillitis. The patient became hemodynamically unstable and died. The authors highlight the current tomographic criteria for the diagnosis and treatment of emphysematous pyelonephritis and question the validity of accepting the same standards used to guide the treatment of patients without transplants, and call attention to the importance of the clinical status for the indication of nephrectomy in cases of emphysematous pyelonephritis.

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“…RI, the second parameter considered in our analysis, has been proposed as non-invasive parameter for evaluating in vivo 32: 397-402 (2018) 400 (24). Recipient age, previous diabetes mellitus and DGF were the main determinants of high RI immediately after kidney transplant (25).…”

Section: Discussionmentioning

confidence: 99%

Increase in Serum Amylase and Resistive Index After Kidney Transplant Are Biomarkers of Delayed Graft Function

Comai

Baraldi

Cuna

et al. 2018

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Quantified power Doppler as a predictor of delayed graft function after renal transplantation

Abstract: Quantified PD (RI + PD) was the best DGF predictor. PD quantification has not been previously reported.

Cited by 8 publications

References 20 publications

Semiquantitative Power Doppler Ultrasound Score to Predict Acute Kidney Injury in Patients With Sepsis or Cardiac Failure: A Prospective Observational Study

Semiquantitative Power Doppler Ultrasound Score to Predict Acute Kidney Injury in Patients With Sepsis or Cardiac Failure: A Prospective Observational Study

Emphysematous pyelonephritis in a transplanted kidney

Increase in Serum Amylase and Resistive Index After Kidney Transplant Are Biomarkers of Delayed Graft Function

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