World's Best Scientists 2026 revealed!
Klaus T. Olkkola

Klaus T. Olkkola

D-Index & Metrics

Medicine

D-Index
75
Citations
18265
World Ranking
19190
National Ranking
223

Klaus T. Olkkola 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 Klaus T. Olkkola 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: 333 publications — 24th percentile

24% of scientists in this discipline score the same or lower.

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

Klaus T. Olkkola 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 Klaus T. Olkkola 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: 75 D-Index — 6th percentile

6% of scientists in this discipline score the same or lower.

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

Overview

Klaus T. Olkkola is affiliated with the University of Helsinki in Finland and has contributed extensively to research in the field of medicine, with a strong focus on anesthesiology and pain medicine. Their work spans a range of subfields including surgery, pharmacology, epidemiology, and cardiology and cardiovascular medicine. The topics explored in their research cover anesthesia and pain management, sepsis diagnosis and treatment, anesthesia and sedative agents, cardiac anesthesia and surgical outcomes, clinical practice guideline implementation, total knee arthroplasty outcomes, and pain management and opioid use.

Olkkola has published in multiple scientific journals, with frequent contributions to the following venues:

  • Acta Anaesthesiologica Scandinavica
  • Anesthesia & Analgesia
  • Anesthesiology
  • British Journal of Anaesthesia
  • The Journal of Clinical Pharmacology

Their recent research papers include:

  • Effects of anaesthesia method and tourniquet use on recovery following total knee arthroplasty: a randomised controlled study, 2020, British Journal of Anaesthesia
  • S-ketamine in patient-controlled analgesia reduces opioid consumption in a dose-dependent manner after major lumbar fusion surgery: A randomized, double-blind, placebo-controlled clinical trial, 2021, PLoS ONE
  • Surviving sepsis campaign: International guidelines for management of sepsis and septic shock in adults 2021 - endorsement by the Scandinavian society of anaesthesiology and intensive care medicine, 2022, Acta Anaesthesiologica Scandinavica
  • Random forest machine learning method outperforms prehospital National Early Warning Score for predicting one-day mortality: A retrospective study, 2020, Resuscitation Plus
  • Ability of prehospital NEWS to predict 1-day and 7-day mortality is reduced in older adult patients, 2021, Emergency Medicine Journal

Frequent co-authors collaborating with Olkkola include:

  • Marius Rehn
  • Michelle S. Chew
  • Morten Hylander Møller
  • Martin I. Sigurðsson
  • Tero Vahlberg

Best Publications

  • Midazolam and other benzodiazepines.

    K. T. Olkkola;J. Ahonen

  • Ketamine: A Review of Clinical Pharmacokinetics and Pharmacodynamics in Anesthesia and Pain Therapy

    Marko A. Peltoniemi;Nora M. Hagelberg;Klaus T. Olkkola;Teijo I. Saari

  • Midazolam Should Be Avoided in Patients Receiving the Systemic Antimycotics Ketoconazole or Itraconazole

    K. T. Olkkola;J. T. Backman;P. J. Neuvonen

  • A potentially hazardous interaction between erythromycin and midazolam

    Klaus T Olkkola;Klaus T Olkkola;Klaus T Olkkola;Kari Aranko;Kari Aranko;Kari Aranko;Harri Luurila;Harri Luurila;Harri Luurila;Arja Hiller;Arja Hiller;Arja Hiller

  • Oral triazolam is potentially hazardous to patients receiving systemic antimycotics ketoconazole or itraconazole

    Anu Varhe;Klaus T Olkkola;Pertti J Neuvonen

  • The pharmacokinetics and metabolism of oxycodone after intramuscular and oral administration to healthy subjects.

    R Poyhia;T Seppala;KT Olkkola;E Kalso

  • Rifampin drastically reduces plasma concentrations and effects of oral midazolam

    Janne T. Backman;Klaus T. Olkkola;Pertti J. Neuvonen

  • The area under the plasma concentration-time curve for oral midazolam is 400-fold larger during treatment with itraconazole than with rifampicin.

    J T Backman;K T Kivistö;K T Olkkola;P J Neuvonen

  • Comparison of alfentanil, fentanyl and sufentanil for total intravenous anaesthesia with propofol in patients undergoing coronary artery bypass surgery†

    J. Ahonen;K.T. Olkkola;M. Hynynen;T. Seppälä

  • Effects of blocking CYP2D6 on the pharmacokinetics and pharmacodynamics of oxycodone.

    Tarja Heiskanen;Klaus T. Olkkola;Eija Kalso

  • Deeper chest compression – More complications for cardiac arrest patients?

    Heidi Hellevuo;Marko Sainio;Riikka Nevalainen;Heini Huhtala

  • The Effect of the Systemic Antimycotics, Itraconazole and Fluconazole, on the Pharmacokinetics and Pharmacodynamics of Intravenous and Oral Midazolam

    Klaus T. Olkkola;Jouni Ahonen;Pertti J. Neuvonen

  • Measurement of pain in children with self-reporting and behavioral assessment

    Eeva-Liisa Maunuksela;Klaus T Olkkola;Reijo Korpela

  • Bioavailability of dexmedetomidine after intranasal administration

    Timo Iirola;Sanna Vilo;Tuula Manner;Riku Aantaa

  • ORAL ACTIVATED-CHARCOAL IN THE TREATMENT OF INTOXICATIONS - ROLE OF SINGLE AND REPEATED DOSES

    Pj Neuvonen;Klaus Olkkola

  • Dose of midazolam should be reduced during diltiazem and verapamil treatments.

    JT Backman;KT Olkkola;K Aranko;JJ Himberg

  • Utstein style reporting of in-hospital paediatric cardiopulmonary resuscitation.

    P. Suominen;K.T. Olkkola;V. Voipio;R. Korpela

  • Impact of age, submersion time and water temperature on outcome in near-drowning.

    P. Suominen;C. Baillie;R. Korpela;S. Rautanen

  • A large simple randomized trial of rocuronium versus succinylcholine in rapid-sequence induction of anaesthesia along with propofol.

    J. I. Andrews;N. Kumar;R. H. G. Van Den Brom;K. T. Olkkola

  • The pharmacokinetics of oxycodone in uremic patients undergoing renal transplantation.

    Maija Kirvela;Leena Lindgren;Timo Seppala;Klaus T. Olkkola

Frequent Co-Authors

Pertti J. Neuvonen
Pertti J. Neuvonen University of Helsinki
Janne T. Backman
Janne T. Backman University of Helsinki
Mika Scheinin
Mika Scheinin Turku University Hospital
Heini Huhtala
Heini Huhtala Tampere University
Harry Scheinin
Harry Scheinin Turku University Hospital
Eija Kalso
Eija Kalso University of Helsinki
Dick Tibboel
Dick Tibboel Erasmus University Rotterdam
Mikko Niemi
Mikko Niemi University of Helsinki
Marjatta Leirisalo-Repo
Marjatta Leirisalo-Repo University of Helsinki
Hugh Montgomery
Hugh Montgomery University College London

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