Cerebral Blood Flow Velocity During Occlusive Manipulation of Patent Ductus Arteriosus in Children

1999 ◽  
Vol 9 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Rosendo A Rodriguez ◽  
Garry Cornel ◽  
Martin C Hosking ◽  
Nihal Weerasena ◽  
William M Splinter ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Patent Ductus Arteriosus ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Cerebral Blood Flow Velocity ◽  
Ductus Arteriosus ◽  
Patent Ductus

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

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.

Effect of Patent Ductus Arteriosus on Lower Extremity Blood Flow Velocity Patterns in Preterm Infants

1984 ◽  
Vol 1 (03) ◽  
pp. 216-222 ◽  
Author(s):  
Dale Alverson ◽  
Marlowe Eldridge ◽  
Marilyn Aldrich ◽  
Sher Werner ◽  
Pamela Angelus ◽  
...  
Keyword(s):  
Blood Flow ◽  
Lower Extremity ◽  
Patent Ductus Arteriosus ◽  
Flow Velocity ◽  
Preterm Infants ◽  
Blood Flow Velocity ◽  
Ductus Arteriosus ◽  
Patent Ductus

Continuous Versus Multiple Rapid Infusions of Indomethacin: Effects on Cerebral Blood Flow Velocity

PEDIATRICS ◽  
1995 ◽  
Vol 95 (2) ◽  
pp. 244-248 ◽  
Author(s):  
Cathy Hammerman ◽  
Joram Glaser ◽  
Michael S. Schimmel ◽  
Benjamin Ferber ◽  
Michael Kaplan ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Cerebral Blood Flow Velocity ◽  
Ductus Arteriosus ◽  
Area Under The Curve ◽  
Resistance Index ◽  
Color Flow ◽  
Rapid Injection

Objective. Therapeutic administration of indomethacin for patent ductus arteriosus (PDA) closure has been documented to decrease cerebral blood flow velocity which may be harmful to the vulnerable premature neonate. We have therefore compared the effects of administering indomethacin by rapid injection versus slow, continuous indomethacin infusion at the same total therapeutic dose on middle cerebral artery (MCA) systolic and diastolic flow velocity, resistance index, and cerebral blood flow (as reflected by the integrated area under the curve). Methods. Premature neonates (<1750 g) documented echocardiographically to have a PDA were randomized to receive indomethacin either by three rapid injection doses or by continuous intravenous infusion over the ensuing 36 hours, providing an equivalent total dose. Echocardiograms and transcranial color flow mapping of the MCA flow velocity were measured at baseline and serially following initiation of therapy in both groups. Effects on cerebral blood flow velocity are presented. Results. Eighteen infants [rapid injection-1.2 ± 0.3 kg (n = 9) and continuous-1.1 ± 0.2 kg (n = 9)] were studied. In the rapid injection treated infants decreased flow velocity in the MCA as manifested by abrupt, significant decreases in systolic (to 70 ± 8% baseline) and diastolic (to 65 ± 13% baseline) flow velocity and area under the curve (to 60 ± 10% of baseline) were evident by 4 minutes and progressed to 30 minutes after treatment initiation. These changes were not observed in the group treated with continuous indomethacin. Both therapeutic modalities were equally successful in closing the ductus, although the numbers are too small to definitively determine therapeutic efficacy. Conclusions. Slow, continuous infusion eliminated the decrease in cerebral flow velocity and appears to be effective in closing the PDA.

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