World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
85
Citations
25734
World Ranking
14642
National Ranking
7408

Namasivayam Ambalavanan publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Namasivayam Ambalavanan sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 507 publications — 59th percentile

59% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Namasivayam Ambalavanan D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Namasivayam Ambalavanan sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 85 D-Index — 29th percentile

29% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Namasivayam Ambalavanan is affiliated with the University of Alabama at Birmingham in the United States. Their scholarly work spans the field of Medicine, with a particular focus on subfields including Pulmonary and Respiratory Medicine, Pediatrics, Perinatology and Child Health, Surgery, Endocrine and Autonomic Systems, and Obstetrics and Gynecology. This broad expertise is reflected in a significant body of research totaling over 500 publications.

The scientist's research primarily addresses topics related to neonatal and respiratory health. Major themes in their work include:

  • Neonatal Respiratory Health Research
  • Congenital Diaphragmatic Hernia Studies
  • Respiratory Support and Mechanisms
  • Neuroscience of Respiration and Sleep
  • Neonatal and Fetal Brain Pathology
  • Infant Development and Preterm Care
  • Birth, Development, and Health

Their recent significant papers illustrate a focus on neonatal outcomes, maternal health, and critical care in infants. Notable publications include:

  • Mortality, In-Hospital Morbidity, Care Practices, and 2-Year Outcomes for Extremely Preterm Infants in the US, 2013-2018 (2022), published in JAMA
  • Treatment for Mild Chronic Hypertension during Pregnancy (2022), published in New England Journal of Medicine
  • Chorioamnionitis and Neonatal Outcomes (2021), published in Pediatric Research
  • Advances in Neonatal Acute Kidney Injury (2021), published in PEDIATRICS
  • Racial/Ethnic Disparities Among Extremely Preterm Infants in the United States From 2002 to 2016 (2020), published in JAMA Network Open

Collaborative work is a significant component of their research activity. Frequent co-authors include:

  • Waldemar A. Carlo
  • Colm P. Travers
  • Brenda B. Poindexter
  • Abhik Das
  • Abbot R. Laptook

Their publications commonly appear in the following venues:

  • Pediatric Research
  • Journal of Perinatology
  • JAMA Network Open
  • PEDIATRICS
  • American Journal of Respiratory and Critical Care Medicine

Best Publications

  • Early CPAP versus surfactant in extremely preterm infants

    Neil N. Finer;Waldemar A. Carlo;Michele C. Walsh;Wade Rich

  • Target ranges of oxygen saturation in extremely preterm infants

    Waldemar A. Carlo;Neil N. Finer;Michele C. Walsh;Wade Rich

  • Prolonged duration of initial empirical antibiotic treatment is associated with increased rates of necrotizing enterocolitis and death for extremely low birth weight infants.

    C. Michael Cotten;Sarah Taylor;Barbara J Stoll;Ronald N. Goldberg

  • Incidence and outcomes of neonatal acute kidney injury (AWAKEN): a multicentre, multinational, observational cohort study.

    Jennifer G Jetton;Louis J Boohaker;Sidharth K Sethi;Sanjay Wazir

  • Prediction of Bronchopulmonary Dysplasia by Postnatal Age in Extremely Premature Infants

    Matthew M. Laughon;John C. Langer;Carl L. Bose;P. Brian Smith

  • Acute kidney injury in critically ill newborns: What do we know? What do we need to learn?

    David J. Askenazi;Namasivayam Ambalavanan;Stuart L. Goldstein

  • Prospective Analysis of Pulmonary Hypertension in Extremely Low Birth Weight Infants

    Ramachandra Bhat;Ariel A. Salas;Chris Foster;Waldemar A. Carlo

  • Acute Kidney Injury Reduces Survival in Very Low Birth Weight Infants

    Rajesh Koralkar;Namasivayam Ambalavanan;Emily B Levitan;Gerald McGwin

  • Cytokines associated with bronchopulmonary dysplasia or death in extremely low birth weight infants.

    Namasivayam Ambalavanan;Waldemar A. Carlo;Carl T. D'Angio;Scott A. McDonald

  • Effect of Depth and Duration of Cooling on Deaths in the NICU Among Neonates With Hypoxic Ischemic Encephalopathy: A Randomized Clinical Trial

    Seetha Shankaran;Abbot R. Laptook;Athina Pappas;Scott A. McDonald

  • Effect of Therapeutic Hypothermia Initiated After 6 Hours of Age on Death or Disability Among Newborns With Hypoxic-Ischemic Encephalopathy: A Randomized Clinical Trial

    Abbot R. Laptook;Seetha Shankaran;Jon E. Tyson;Breda Munoz

  • Both Extremes of Arterial Carbon Dioxide Pressure and the Magnitude of Fluctuations in Arterial Carbon Dioxide Pressure Are Associated With Severe Intraventricular Hemorrhage in Preterm Infants

    Jorge Fabres;Waldemar A Carlo;Vivien Phillips;George Howard

  • Adjunctive Azithromycin Prophylaxis for Cesarean Delivery

    Alan T. N. Tita;Jeff M. Szychowski;Kim Boggess;George Saade

  • Extracellular matrix in lung development, homeostasis and disease

    Yong Zhou;Jeffrey C. Horowitz;Alexandra Naba;Namasivayam Ambalavanan

  • Effect of Depth and Duration of Cooling on Death or Disability at Age 18 Months Among Neonates With Hypoxic-Ischemic Encephalopathy: A Randomized Clinical Trial.

    Seetha Shankaran;Abbot R. Laptook;Athina Pappas;Scott. A. McDonald

  • Altered DNA methylation profile in idiopathic pulmonary fibrosis.

    Yan Y. Sanders;Namasivayam Ambalavanan;Brian Halloran;Xiangyu Zhang

  • TGF-β2 Suppresses Macrophage Cytokine Production and Mucosal Inflammatory Responses in the Developing Intestine

    Akhil Maheshwari;Akhil Maheshwari;David R. Kelly;Teodora Nicola;Namasivayam Ambalavanan;Namasivayam Ambalavanan

  • Randomized trial of "slow" versus "fast" feed advancements on the incidence of necrotizing enterocolitis in very low birth weight infants.

    Suha F. Rayyis;Namasivayam Ambalavanan;Linda Wright;Waldemar A. Carlo

  • Developing a neonatal acute kidney injury research definition: A report from the NIDDK neonatal AKI workshop

    Michael Zappitelli;Namasivayam Ambalavanan;David J Askenazi;Marva M Moxey-Mims

  • Outcome of term infants using apgar scores at 10 minutes following hypoxic-ischemic encephalopathy.

    Abbot R Laptook;Seetha Shankaran;Namasivayam Ambalavanan;Waldemar A Carlo

Frequent Co-Authors

Waldemar A. Carlo
Waldemar A. Carlo University of Alabama at Birmingham
Rosemary D. Higgins
Rosemary D. Higgins George Mason University
Abhik Das
Abhik Das RTI International
Seetha Shankaran
Seetha Shankaran Wayne State University
Abbot R. Laptook
Abbot R. Laptook Brown University
Edward F. Bell
Edward F. Bell University of Iowa
Michele C. Walsh
Michele C. Walsh Case Western Reserve University
Barbara J. Stoll
Barbara J. Stoll The University of Texas Health Science Center at Houston
James S. Hagood
James S. Hagood University of North Carolina at Chapel Hill
Richard A. Ehrenkranz
Richard A. Ehrenkranz Yale University

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