P Ryhänen

1.2k total citations
39 papers, 862 citations indexed

About

P Ryhänen is a scholar working on Pediatrics, Perinatology and Child Health, Anesthesiology and Pain Medicine and Immunology. According to data from OpenAlex, P Ryhänen has authored 39 papers receiving a total of 862 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Pediatrics, Perinatology and Child Health, 10 papers in Anesthesiology and Pain Medicine and 10 papers in Immunology. Recurrent topics in P Ryhänen's work include Anesthesia and Sedative Agents (10 papers), Pediatric Pain Management Techniques (7 papers) and Anesthesia and Neurotoxicity Research (6 papers). P Ryhänen is often cited by papers focused on Anesthesia and Sedative Agents (10 papers), Pediatric Pain Management Techniques (7 papers) and Anesthesia and Neurotoxicity Research (6 papers). P Ryhänen collaborates with scholars based in Finland, Belgium and United States. P Ryhänen's co-authors include LEENA H. KOTINIEMI, Irma Moilanen, J Valanne, R. Jokela, Aki Mustonen, Klaus T. Olkkola, Eeva‐Liisa Maunuksela, Maila Koivisto, M. Koivuranta and Marja‐Leena Pokela and has published in prestigious journals such as Anesthesiology, Journal of Thoracic and Cardiovascular Surgery and Anesthesia & Analgesia.

In The Last Decade

P Ryhänen

37 papers receiving 802 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
P Ryhänen Finland	14	431	366	288	116	113	39	862
Joan C. Bevan Canada	18	266 0.6×	377 1.0×	587 2.0×	149 1.3×	116 1.0×	63	994
George Chalkiadis Australia	17	569 1.3×	486 1.3×	339 1.2×	87 0.8×	54 0.5×	43	1.0k
Greta M. Palmer Australia	15	321 0.7×	334 0.9×	298 1.0×	72 0.6×	26 0.2×	41	827
Ann G. Bailey United States	12	169 0.4×	255 0.7×	310 1.1×	129 1.1×	41 0.4×	24	642
G Barrier France	13	311 0.7×	396 1.1×	161 0.6×	103 0.9×	25 0.2×	32	801
Jeannie Zuk United States	15	210 0.5×	200 0.5×	226 0.8×	83 0.7×	63 0.6×	49	637
Guy de L. Dear United States	13	105 0.2×	425 1.2×	299 1.0×	171 1.5×	33 0.3×	26	696
Michelle L. Czarnecki United States	12	426 1.0×	299 0.8×	227 0.8×	54 0.5×	116 1.0×	25	671
David J. Steward Canada	17	140 0.3×	303 0.8×	162 0.6×	181 1.6×	20 0.2×	51	906
Peter Rothstein United States	13	211 0.5×	145 0.4×	136 0.5×	46 0.4×	42 0.4×	32	538

Countries citing papers authored by P Ryhänen

Since Specialization

Citations

This map shows the geographic impact of P Ryhänen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by P Ryhänen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P Ryhänen more than expected).

Fields of papers citing papers by P Ryhänen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P Ryhänen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by P Ryhänen. The network helps show where P Ryhänen may publish in the future.

Co-authorship network of co-authors of P Ryhänen

This figure shows the co-authorship network connecting the top 25 collaborators of P Ryhänen. A scholar is included among the top collaborators of P Ryhänen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with P Ryhänen. P Ryhänen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Olkkola, Klaus T., et al.. (2005). Perioperative pharmacokinetics of ibuprofen enantiomers after rectal administration. Pediatric Anesthesia. 15(7). 566–573. 12 indexed citations

Akural, Ethem I., Timo Salomäki, Aini Bloigu, et al.. (2004). The effects of pre‐emptive epidural sufentanil on human immune function. Acta Anaesthesiologica Scandinavica. 48(6). 750–755. 21 indexed citations

Pölkki, Tarja, Anna‐Maija Pietilä, Katri Vehviläinen‐Julkunen, Helena Laukkala, & P Ryhänen. (2002). Parental views on participation in their child's pain relief measures and recommendations to health care providers. Journal of Pediatric Nursing. 17(4). 270–278. 39 indexed citations

KOTINIEMI, LEENA H., P Ryhänen, & Irma Moilanen. (1997). Behavioural changes in children following day‐case surgery: a 4‐week follow‐up of 551 children. Anaesthesia. 52(10). 970–976. 203 indexed citations

KOTINIEMI, LEENA H., et al.. (1997). Postoperative symptoms at home following day‐case surgery in children: a multicentre survey of 551 children. Anaesthesia. 52(10). 963–969. 125 indexed citations

Koivuranta, M., et al.. (1996). Antiemetic efficacy of prophylactic ondansetron in laparoscopic cholecystectomy. Anaesthesia. 51(1). 52–55. 42 indexed citations

KOTINIEMI, LEENA H., P Ryhänen, & Irma Moilanen. (1996). Behavioural changes following routine ENT operations in two‐to‐ten‐year‐old children. Pediatric Anesthesia. 6(1). 45–49. 41 indexed citations

Anttonen, H, et al.. (1995). Cutaneous heat loss in children during anaesthesia. British Journal of Anaesthesia. 74(3). 306–310. 20 indexed citations

Ryhänen, P, et al.. (1994). Postoperative pain relief in children. Anaesthesia. 49(1). 57–61. 35 indexed citations

10.

Anttonen, H, et al.. (1994). Calculation of mean skin temperature and changes in body heat content during paediatric anaesthesia. British Journal of Anaesthesia. 72(5). 548–553. 5 indexed citations

11.

Maunuksela, Eeva‐Liisa, et al.. (1992). Efficacy of rectal ibuprofen in controlling postoperative pain in children. Canadian Journal of Anesthesia/Journal canadien d anesthésie. 39(3). 226–230. 45 indexed citations

12.

Pokela, Marja‐Leena, Klaus T. Olkkola, Maila Koivisto, & P Ryhänen. (1992). Pharmacokinetics and pharmacodynamics of intravenous meperidine in neonates and infants. Clinical Pharmacology & Therapeutics. 52(4). 342–349. 27 indexed citations

13.

Pokela, Marja‐Leena, et al.. (1992). Alfentanil-Induced Rigidity in Newborn Infants. Anesthesia & Analgesia. 75(2). 252???257–252???257. 37 indexed citations

14.

Ryhänen, P, Jorma Ilonen, Heljä‐Marja Surcel, et al.. (1987). Characterization of in vivo activated lymphocytes found in the peripheral blood of patients undergoing cardiac operation. Journal of Thoracic and Cardiovascular Surgery. 93(1). 109–114. 10 indexed citations

15.

Jakobsson, M., et al.. (1985). The Effect of Surgery, Radiation Therapy, and Combined Radiation Therapy and Chemotherapy on Immunocompetence in Patients with Lung Carcinoma. Acta Radiologica Oncology. 24(6). 481–486. 3 indexed citations

16.

Ryhänen, P, K Huttunen, & Jorma Ilonen. (1984). Natural Killer Cell Activity After Open‐Heart Surgery. Acta Anaesthesiologica Scandinavica. 28(5). 490–492. 39 indexed citations

17.

Ryhänen, P, R. Jouppila, Marjatta Lanning, et al.. (1984). Effect of Segmental Epidural Analgesia on Changes in Peripheral Blood Leucocyte Counts, Lymphocyte Subpopulations, and in vitro Transformation in Healthy Parturients and Their Newborns. Gynecologic and Obstetric Investigation. 17(4). 202–207. 11 indexed citations

18.

Ryhänen, P, et al.. (1980). Premedication for outpatient adenoidectomy: Comparison between ketamine and pethidine. The Laryngoscope. 90(3). 494–500. 6 indexed citations

19.

Ryhänen, P, et al.. (1977). Circulatory responses to laryngoscopy and endotracheal intubation in patients with and without cardiovascular disease. Effect of prophylactic practolol.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 66(6). 294–8. 10 indexed citations

20.

Ryhänen, P, et al.. (1972). The nature of menstrual disorders in North Finnish women.. PubMed. 61(2). 56–65.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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