Features of renal blood flow in acute kidney injury in premature infants with hemodynamically significant patent ductus arteriosus

Hemodynamically significant patent ductus arteriosus (HSPDA) in premature infants leads to renal hypoperfusion due to the phenomenon of «stealing» of the systemic circulation, which can contribute to the development of acute kidney injury (AKI). The use of ultrasound Doppler sonography of the renal vessels can be effective in assessing renal blood flow and in the early diagnosis of acute renal failure. Purpose — to assess the prognostic significance of the state of renal blood flow in the first day of life in premature infants with HSPDA in the early diagnosis of AKI. Materials and methods. We examined 40 preterm infants (gestational age 29–36 weeks) with HSPDA. Distribution of the examined patients: the group with AKI — 23 children, the group without AKI — 17 children. The observation period was 10 days. The patients underwent echocardiography with Doppler analysis using a broadband microconvex probe with a frequency of 5–8 MHz (TOSHIBA Nemso XG) at 5–11 hours of life. Color Doppler ultrasound scanning of renal vessels was performed on the first, third and tenth days of life. The parameters of blood flow in the main renal and interlobar renal arteries were studied: peak systolic velocity (PSV) and end diastolic velocity (EDV) of blood flow, resistance index (RI). Diagnosis and stratification of AKI severity met the KDIGO neonatal modification criteria. Results. On the third to fifth day of life, AKI was diagnosed in 23 (57.5%) children, but already in the first day of life, compared with patients without AKI, a significant decrease in PSV parameters of blood flow in the main renal artery was noted (20.6±5.87 cm/sec versus 25.4±6.17 cm/sec in children without AKI, p<0.02). In addition, the main changes in the first day of life in patients with AKI were revealed at the level of the interlobar renal artery, namely: a decrease in PSV blood flow (11.10±3.329 cm/sec versus 18.48±3.014 cm/sec in children without AKI, p<0.001) and EDV of blood flow (2.83±2.063 cm/sec versus 6.16±2.447 cm/sec in children without AKI, p<0.001), increased RI (0.758±0.137 versus 0.666±0.1216 in children without AKI, p<0.02). On the third day of life at AKI, there was a disorder in the parameters of blood flow in the interlobaric renal artery, the value of which on the tenth day of life did not differ from the parameters of children without AKI. Conclusions. In premature infants with HSPDA, who were diagnosed with AKI on the third to fifth day of life, in the first day of life, there is a decrease in PSV blood flow parameters in the main renal artery, changes in blood flow in the interlobar renal artery, namely: a decrease in PSV and EDV blood flow, an increase in RI. Thus, the assessment of the state of blood flow in the interlobar renal artery on the first day of life in premature infants with HSPDA is of diagnostic value for the timely determination of the risk group for AKI. The research was carried out in accordance with the principles of the Helsinki declaration. The study protocol was approved by the Local ethics committee of all participating institution. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: premature infants, patent ductus arteriosus, renal blood flow, acute kidney injury.

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Prediction of early diagnosis of acute kidney injury in premature infants with hemodynamically significant patent ductus arteriosus

Modern pediatrics. Ukraine ◽

10.15574/sp.2020.112.5 ◽

2020 ◽

pp. 5-11

Author(s):

T.P. Borysova ◽

◽

O.U. Obolonska ◽

O.E. Khudyakov ◽

◽

...

Keyword(s):

Blood Flow ◽

Patent Ductus Arteriosus ◽

Serum Creatinine ◽

Renal Artery ◽

Flow Velocity ◽

Premature Infants ◽

Blood Flow Velocity ◽

Ductus Arteriosus ◽

Kidney Injury ◽

Patent Ductus

The development of acute kidney injury (AKI) in preterm infants with hemodynamically significant patent ductus arteriosus (HSPDA) is an additional burden on homeostatic mechanisms, leading to loss of fluid, electrolyte balance, and acid-base disturbance and increasing the risk of mortality by 50%. Therefore, early detection of AKI in preterm infants with HSPDA is extremely important in terms of improving treatment outcomes. Purpose — to create, evaluate and further analyze the binary logistic regression model of AKI on the background of HSPDA in premature infants. Materials and methods. The group of study participants consisted of 40 premature babies with HSPDA, who were admitted for treatment on the first day of life to the Department of Anesthesiology and Neonatal Intensive Care at MI «Dnepropetrovsk Regional Children's Clinical Hospital» Dnepropetrovsk Regional Council». On the third to fifth day of life, 23 (57.5%) patients were diagnosed with AKI. Clinical and laboratory examination included obstetric history, gestational age, weight, physical examination, clinical analysis of blood and urine, arterial blood oxygen saturation, biochemical methods — examination of urea, serum and urine creatinine, serum and urine sodium, serum potassium. The concentration index of creatinine, fractional excretion of sodium, glomerular filtration rate (GFR) according to the Schwartz formula were calculated. Instrumental methods of examination included echocardiography with Doppler, ultrasound Doppler of renal vessels, renal spectroscopy in the near infrared region. In order to preliminarily determine the diagnostic potential of some clinical'anamnestic and laboratory data, the parameters of the sample with AKI and the sample without this pathology were compared: in the case of interval scale the Mann–Whitney U-test was used, in the case of categorical scale — χ2-test or Fisher's exact test. Spearman's rank correlation was used to form the optimal set of input variables for regression modeling. The method of binary logistic regression was used to develop a diagnostic model of AKI development on the background of HSPDA in premature infants. Results. At the stage of exploratory data analysis (several dozen parameters of clinical and biochemical analysis of blood and urine, renal hemodynamics, renal oxygenation and therapeutic measures on the first day), as well as clinical and anamnestic data, it was found that AKI has a significant relationship with 14 interval ( maximum blood flow velocity in the interlobar renal artery, minimum blood flow velocity in the interlobar renal artery, resistance index in the interlobar renal artery, maximum blood flow velocity in the main renal artery, diameter of the open arterial duct, renal oxygenation, fractional renal tissue extraction of oxygen, serum creatinine, GFR, creatinine concentration index, urinary sodium, fractional sodium excretion, urine protein, diastolic blood pressure) and 9 nominal values (the size of the patent ductus arteriosus on the first day of more than 2 mm, ibuprofen therapy at a dose of 20 mg/kg on the first day, ibuprofen therapy on the first day of life, furosemide treatment, history of renal disease in the mother, chronic foci of infection in the mother, hypertension of pregnancy, threat of abortion, necrotizing enterocolitis in the patient on the first day of life). Conclusions. The most significant predictors of AKI development in premature infants with HSPDA are the parameter of maximum blood flow velocity in the interlobar renal artery, HSPDA diameter greater than 2 mm and serum creatinine level on the first day of life. The sensitivity of the AKI logistic regression model, in which HSPDA diameter and serum creatinine level are used as explanatory variables, is 91%, specificity — 88%, overall accuracy — 90%. Replacement of serum creatinine in the logit function for the maximum blood flow velocity in the interlobar renal artery allows to increase the sensitivity of the model up to 96%, and the overall accuracy up to 93%. The study was conducted in accordance with the principles of the Helsinki Declaration. The research protocol was approved by the Local Ethics Committee of the institution mentioned in the work. Informed consent of parents of children was obtained for the research. The authors were declare no conflict of interest. Key words: hemodynamically significant patent ductus arteriosus, premature infants, acute kidney injury, prediction of early diagnosis.

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State of Renal Blood Flow in Premature Children with Hemodynamically Significant Patent Ductus Arteriosus

Journal of Internal Medicine: Science & Art ◽

10.36013/jimsa.v2i1.51 ◽

2021 ◽

Vol 2 ◽

pp. 6-13

Author(s):

Tamara Borysova ◽

Olga Obolonska ◽

Irina Andreychenko

Keyword(s):

Blood Flow ◽

Patent Ductus Arteriosus ◽

Renal Artery ◽

Renal Blood Flow ◽

Premature Infants ◽

Ductus Arteriosus ◽

Peak Systolic Velocity ◽

Renal Arteries ◽

Main Renal Artery ◽

Patent Ductus

Abstract: Introduction: Hemodynamically significant patent ductus arteriosus (HSPDA) lowers the renal circulation because of the "ductal stealing phenomenon," which can change the renal blood flow. The aim: To study the state of blood flow in the main renal artery and interlobar renal artery in premature infants with HSPDA. Materials and methods: 74 preterm newborns (gestational age 29-36 weeks) were divided into three groups: І - 40 children with HSPDA, ІІ - 17 children with patent ductus arteriosus (PDA) without hemodynamic disorders, ІІІ - 17 children with closed ductus arteriosus. Color ultrasound Doppler scan of the vascular bed of the kidneys was performed using a microconvex sensor with a frequency of 5-8 MHz ("TOSHIBA" Nemso XG model SSA-580A (Japan) from the main renal artery to the interlobar renal arteries of the right kidney. The following parameters of renal blood flow were studied: peak systolic velocity (PSV), end-diastolic velocity (EDV), resistance index (RI). Results: Peak systolic velocity (PSV) in the main renal artery and interlobar renal arteries did not differ significantly between groups. On the first, third, and tenth days of life, there was a significant decrease in the EDV of blood flow and increased RI in the main renal artery. The EDV of blood flow and RI in the interlobar renal artery on the first day of life did not differ depending on PDA's presence and its hemodynamic significance. On the third and tenth days of life and in the interlobar renal artery, a significant decrease in EDV of blood flow and increased RI were noted. These renal blood flow characteristics were closely related to the size of the PDA on the first day of life. Conclusion: A feature of renal hemodynamics in HSPDA in premature infants is a decrease in the EDV of blood flow in the main renal artery and interlobar renal artery, as well as an increase in the RI of these vessels, directly correlating with the size of the PDA in the first day of life. During the first ten days of life, dynamic control revealed a slowed process of restoration of renal blood flow in babies with HSPDA, despite the PDA's closure.

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ACUTE KIDNEY INJURY IN PREMATURE CHILDREN WITH HEMODYNAMICALLY SIGNIFICANT OPEN ARTERIAL DUCT

Neonatology surgery and perinatal medicine ◽

10.24061/2413-4260.x.4.38.2020.2 ◽

2020 ◽

Vol 10 (4(38)) ◽

pp. 26-34

Author(s):

T. Borysova ◽

O. Obolonska ◽

D. Surkov

Keyword(s):

Acute Kidney Injury ◽

Patent Ductus Arteriosus ◽

Serum Creatinine ◽

Premature Infants ◽

Ductus Arteriosus ◽

Kidney Injury ◽

The Third ◽

Premature Babies ◽

Arterial Duct ◽

Patent Ductus

Introduction. Hemodynamically significant patent ductus arteriosus (HSPDA) leads to the “steal” phenomenon of the systemic circulation and renal hypoperfusion, which can contribute to the development of acute kidney injury (AKI). Aim of the study. To assess the frequency and severity of AKI according to the criteria of neonatal modification of KDIGO in premature infants with HSPDA. Material and research methods. We examined 74 premature infants (gestational age 29-36 weeks) who were treated in the department of anesthesiology and intensive care of newborns. The duration of observation was ten days from the first day of life. The patients were divided into three groups depending on the presence of patent ductus arteriosus (PDA) and its hemodynamic significance: group I - 40 children with HSPDA, group II - 17 children with PDA without hemodynamic disorders, group III - 17 children with closed arterial duct. Clinical examination and treatment of premature infants was carried out according to the generally accepted methods. In HSPDA, ibuprofen was used to close the ductus arteriosus for 32 premature babies, and restrictive infusion therapy for 8 ones. Doppler echocardiography was performed at 5-11 hours of life and then daily to determine the PDA, its size and hemodynamic significance. Diagnosis and stratification of the severity of acute kidney injury were carried out according to the criteria of neonatal modification KDIGO, for which the concentration of serum creatinine was studied on the first, third, fifth, seventh, tenth days and the level of urine output every 6-12 hours. Research results. AKI on the third day of life was diagnosed in 52.5% of children with HSPDA, which is 2.2 times more often than in children with PDA without hemodynamic significance (p <0.05) and 4.4 times more often than with closed arterial duct (p<0.007). On the fifth day of life, AKI was detected in two more children and their total number increased to 57.5%. On the seventh and tenth days of life, AKI in children with HSPDA was more common than in children with a closed duct (50.0% versus 11.8%, p<0.008, and 29.4% versus 0%, p<0.02, respectively). Analysis of the severity of acute kidney injury showed the effect of HSPDA on this parameter. The presence of HSPDA was a factor that led to the development of stage II AKI on the third and fifth days of life. In addition, with HSPDA, the frequency of stage III AKI increased 2.7 times within four days, while the percentage of stages I-II AKI decreased by 1.5 times. The frequency and severity of AKI in children with HSPDA depended on the size of the ductus arteriosus. With PDA up to 2 mm in diameter, on the third and fifth days of life, AKI was diagnosed in every fifth patient of stage I only, and on the tenth day of life - only in one patient. Meanwhile, in the majority of children with a PDA diameter of more than 2 mm, AKI was diagnosed on the third, fifth and seventh days; only on the tenth day of life, the number of such patients decreased 1.3 times. But the proportion of severe acute kidney injury practically did not change - acute kidney injury of stages II-III was observed on the first day in every second child with a large PDA diameter. The serum creatinine level on the third and tenth days directly depended on the size of the PDA on the first day (ρ = 0.493, p˂0.001 and ρ = 0.432, p˂0.002, respectively). With HSPDA, this dependence was more pronounced (ρ = 0.732, p˂0.001 and ρ = 0.731, p˂0.001, respectively) than in the group with PDA without hemodynamic significance (ρ = 0.285, p<0.05 and ρ = 0.324, p>0.05, respectively). The serum creatinine concentration directly correlated with the closure time of the PDA. Analysis of the connection between the rate of closure of the PDA and the presence of AKI in the HSPDA group showed that in the case of late closure of the ductus arteriosus (at 3-5 days of life), 16 (94.1%) premature infants suffered from kidney damage versus 1 (5.9%) case among children, in which the duct closed in the first two days (OR = 36.57; CI: 4.02-332.34 p<0.001). A close correlation was also established between the rate of closure of the PDA and the maximum stage of the AKI (ρ = 0.700, p˂0.001). Conclusions. HSPDA contributes to the development of AKI in premature infants. The diameter and rate of closure of the ductus arteriosus determine the frequency and severity of AKI in premature infants with HSPDA. Additional research is needed to diagnose acute kidney injury in premature babies with HSPDA earlier.

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The effect of chronic infection foci in the mother on the development of acute kidney injury in premature infants with hemodynamically significant patent ductus arteriosus

Ukrainian journal of Perinatology and Pediatrics ◽

10.15574/pp.2020.84.13 ◽

2020 ◽

pp. 13-18

Author(s):

T.P. Borysova ◽

◽

O.U. Obolonska ◽

◽

Keyword(s):

Acute Kidney Injury ◽

Patent Ductus Arteriosus ◽

Premature Infants ◽

Ductus Arteriosus ◽

Kidney Injury ◽

Maternal Infection ◽

Group Iii ◽

Group I ◽

Group Ii ◽

Patent Ductus

Nephrogenesis may be disrupted antenatally because of chronic infection foci (CIF) in the mother, the development of chorioamnionitis, feto-placental insufficiency. As a result, in the postnatal period, the kidneys are more sensitive to hypoperfusion, which occurs in premature infants with hemodynamically significant patent ductus arteriosus (HSPDA) and can lead to the development of acute kidney injury (AKI). Purpose — to study the influence of CIF in the mother on the development of AKI in premature infants with HSPDA. Materials and methods. 74 premature infants (gestational age 29–36 weeks) who were treated in the Department of Anesthesiology and Neonatal Intensive Care MI «Dnepropetrovsk Regional Children's Clinical Hospital» Dnepropetrovsk Regional Council» were examined. Patients were divided into three groups depending on the presence of a patent ductus arteriosus (PDA) and its hemodynamic significance: Group I — 40 children with HSPDA, Group II — 17 children with PDA without hemodynamic disorders, Group III — 17 children with a closed ductus arteriosus. The presence of CIF in the mother was determined according to medical records, chorioamnionitis on the basis of histopathological examination of the placenta. Patients with HSPDA were divided into two subgroups: 28 children from mothers with CIF, 12 — without CIF. Clinical examination and treatment of premature infants was carried out according to generally accepted methods. Echocardiography with Doppler was performed at 5–11 hours of life and then daily to determine PDA, its size and hemodynamic significance. Diagnosis and stratification of the severity of AKI were performed according to the criteria of neonatal modification of KDIGO, for which the concentration of serum creatinine and diuresis were studied. Results. Chronic foci of infection were found in 28 (70.0%) mothers of group I, in 5 (29.4%) — group II, in 6 (35.2%) — group III. Chorioamnionitis in group I — 10 (25%) cases, in group II–ІII — 6 (17.6%). The presence of CIF in the mother caused a significant increase in the size of the PDA on the first day of life in the group of HSPDA against groups II–III: 2.61±0.861 (2.3; 2–3.5) mm against 1.79±0.365 (1.7; 1.5–2) mm, p<0.001. Patent arterial duct with a diameter of >2 mm on the first day of life in premature infants of group I from mothers with foci of infection was observed more often — 19 (67.9%) against 2(6.7%) of groups II–III (OR=10.56; CI: 1.9–58.53, p<0.005). Analysis of the incidence of AKI on the third day of life depending on HSPDA and the presence of CIF showed that 64.3% of preterm infants with HSPDA and maternal infection developed AKI — 6.6 times more often than in groups without HSPDA (OR=8.40; CI: 2.60–27.14; p<0.001), and 2.6 times more often compared to children of the subgroup HSPDA without recorded maternal infection (OR=5.40; CI: 1.18–24.65; p<0.03). On the background of HSPDA and CIF stage II–III AKI was observed in every third child. Comparative analysis within group I depending on the CIF revealed that the frequency of AKI for 10 days in the subgroup with infection was almost three times higher than the level of the subgroup without infection: 71.4% vs. 25.0% (OR=7.50; CI: 1.60–35.07; p<0.009). Conclusions. The presence of CIF in the mother is a risk factor for AKI in premature infants with HSPDA. Therefore, such children should be classified as at risk of developing AKI. The research was carried out in accordance with the principles of the Helsinki Declaration. The study protocol was approved by the Local Ethics Committee of these Institutes. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: acute kidney injury, chronic foci of maternal infection, hemodynamically significant patent ductus arteriosus, premature infants.

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Effect of ibuprofen for hemodynamically significant patent ductus arteriosus closure on the development of acute kidney injury in preterm infants

Medicni perspektivi (Medical perspectives) ◽

10.26641/2307-0404.2021.1.227960 ◽

2021 ◽

Vol 26 (1) ◽

pp. 156-162

Author(s):

T.P. Borysova ◽

O.Yu. Obolonska

Keyword(s):

Acute Kidney Injury ◽

Patent Ductus Arteriosus ◽

Preterm Infants ◽

Standard Dose ◽

Ductus Arteriosus ◽

Kidney Injury ◽

High Dose ◽

The Third ◽

Renal Hypoperfusion ◽

Patent Ductus

Premature infants with hemodynamically significant patent ductus arteriosus (HSPDA) have a high risk of developing acute kidney injury (AKI) due to renal hypoperfusion and use of ibuprofen for duct closure. The aim of the study was to evaluate the effect of ibuprofen for the closure of HSPDA on the development of AKI in preterm infants depending on high dose of the drug on the first day of life. 40 preterm infants with HSPDA who were admitted for observation on the first day of life were examined. To close the ductus arteriosus, infants received restrictive therapy. In addition, 32 (80,0%) preterm infants on the first day of life were prescribed ibuprofen: 19 infants – in high dose (20 mg/kg), 13 infants – in standard dose (10 mg/kg). Clinical examination and treatment of preterm infants was carried out according to the generally accepted methods. Echocardiography with Doppler was performed at 5-11 hours of life and then daily to determine the size and hemodynamic significance of patent ductus arteriosus. Diagnosis and stratification of the severity of AKI were performed according to the criteria of neonatal modification of KDIGO, for which the concentration of serum creatinine and diuresis were studied. According to the results of the study, it was established that the frequency of AKI on the third and fifth days of life in preterm infants with HSPDA, who received ibuprofen in a high dose (20 mg/kg) on the first day, was 73.7% and 84.2%, respectively, which is 2.2 (OR=5.6; CI: 1,43-21,95; р<0.02) and 2.5 (OR=10.67; CI: 2.31-49.31; р<0.002) times, more often than in infants without such therapy. High dose of ibuprofen on the first day of life in preterm infants with HSPDA are most often associated with the development of stage I AKI on the third or fifth day of life, which was temporary in one third of patients. The use of a high-dose ibuprofen for HSPDA closure on the first day of life in preterm infants was significantly more often associated with foci of infection in the mother, large duct size and furosemide use.

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