Prof Johan Diedericks
EmeritusProf/SrSpecialist 8hpw
Office of the Dean: Health Sciences
Office of the Dean Health Sciences
051 4053307
Francois Retief Building: Block B 328A

Short CV

Abbreviated CV:  Johan Diedericks


Full Name:                   Bart Johannes Stephanus Diedericks

Professional Name:     Johan Diedericks


Birth:                           29 November 1952

Address:                      PO Box 27971



                                    South Africa

Affiliation:                   Professor and Head, Department Anaesthesiology, University of the Free State, Bloemfontein, South Africa



Positions held:  SA College of Anaesthetists Current President & Senator,  South African Society of Anaesthesiologists Councillor & President, EX-Chairperson World Federation of Societies of Anaesthesiology (WFSA) Committee for Trauma, Resuscitation & Intensive care, Ex-member South African Medical & Dental Professions Board, Advidory Boards of pharmaceutical companies.


Clinical Interest:  Paediatric & paediatric cardiac anaesthesia.  Teaching clinical anaesthesia & research


Other interest:  Improving anaesthesia in the developing world.


Publications:  55 peer reviewed articles & abstracts, several chapters, >90 other publications


Speaker:  Regular speaker at National and International Meetings.


Editorial work:  Sub-editor SAJAA (Southern African Journal of Anaesthesia and Analgesia), Internet J Anesth,  Review for several journals, including Pediatric Anesthesia, SAMJ, The CardioVascular Journal of Africa


Please find more detail in Research Gate and Google Scholar

Peer reviewed PAPERS



  • 1Ryksen E, DiedericksBJS. Calculation of comparative utilisation and cost: a South African perspective on intravenous vs. inhalational anaesthesia for procedures of differing duration.South Afr J Anaesth Analg. 2012;18(6): 310-17



  • 2Labuschagne M, Robbetze W, Rozmiarek J, Strydom M, Wentzel M, Diedericks BJS, Joubert G.Errors in drug administration by anaesthetists in public hospitals in the Free State.S Afr Med J 2011; 101:324-7


    2009:  Kry inligting



  • 3Diedericks J.Should I do this case? – the paediatric murmur.CME 2008; 26(3)141-4
  • 4Lamacraft G, Kenny PJ, Diedericks BJS, Joubert G.Training and experience of doctors administering obstetric anaesthesia in the Free State level 1 and 2 hospitals. SAAJA 2008; 14(2):13-17
  • 5Lamacraft G, Kenny PJ, Diedericks BJS, Joubert G.Obstetric anaesthesia: the source of the crisis.SAMJ 2008; 98:123-4



  • 6Lamacraft G, Schmidt MJ, Diedericks BJS, Joubert G.An audit of the use of regional anaesthesia for caesarean section in the Free State:from 2002 to 2004. SAJAA 2007; 13(4):21-26



  • 7Nell WT, Stevenson N, Ritgard T, van der Westhuizen FW, Diedericks J, Joubert G.Post-operative neuromuscular function of patients receiving non-depolarising muscle relaxants at Universitas Hospital, Bloemfontein, South Africa.Southern African J Anaesth Analg2004; 10(1):6-8



  • 8van Wyk V, Marais A, Diedericks J, van der Walt E, Dumas L, Badenhorst PN, Alexander KC, Kotzé HFPlasma volume expansion with Haemaccel does not impair haemostasis during reduction mammoplasty.S A J Surg63:22-5, 1998



  • 9Sear JW, Diedericks J, Foëx P.Continuous infusion of propofol administered to dogs:effects on ICG and propofol disposition.Br J Anaesth72:451-455, 1994



  • 10Goldberg AH, Diedericks J, Sear JW, Hopwood MB, Foëx P.Diltiazem and regional left ventricular function during graded coronary constriction and propofol anaesthesia in the dog.J Cardiothor Vasc Anes7:705-710, 1993
  • 11Diedericks J, Leone BJ, Foëx P, Sear JW, Ryder WA.Nitrous oxide causes myocardial ischemia when added to propofol in the compromised canine myocardium.Anesth Analg 76:1322-1325, 1993
  • 12Diedericks J.Narkose en die kind met boonste lugweginfeksie.CME/VMO11:429-436, 1993 (The child with upper airway infection.)



  • 13Goldberg AH, Diedericks J, Hopwood MB, Foëx P.Canine end-systolic pressure-length relationships: depressed by diltiazem, invalidated by ischaemia.J Cardiothor Vasc Anes6:593-599, 1992
  • 14Puttick RM, Diedericks J, Sear JW, Foëx P.Effect of graded infusion rates of propofol on regional and global left ventricular function in the dog.Br J Anaesth 69:375-381, 1992



  • 15Ramsay JG, Arvieux CC, Diedericks J, Foëx P.Verapamil and nitrous oxide exert only minor effects on the normal myocardium in the presence of fentanyl.Eur J Anaesth 8:203-212, 1991
  • 16Foëx P, Diedericks J, Sear JW.Cardiovascular effects of propofol. J Drug Dev 4(Suppl 3):3-9, 1991.(Review)
  • 17Herbst CP, Diedericks J, Uys NJ, Brümmer J, Lötter MG.Use of a personal computer for fast acquisition of cardiovascular data over an extended period.Comput Biol Med 21:407-415, 1991)


    1989 -1990:

  • 18Diedericks J, Leone BJ, Foëx P:Regional differences in left ventricular wall motion in the anaesthetised dog.Anaesthesiology 70: 82-90, 1989.
  • 19Diedericks J, Leone BJ, Philbin DM, Foëx P:Effectof verapamil on canine left ventricular function in the presence of fentanyl when apical blood flow is critically limited.Br J Anaesth 63(4): 458-464, 1989.


    1973 - 1990:

  • 20Diedericks BJS:Aspektevankankerimmuniteit.SA Kankerbulletin 68(2):68-83, 1974. (Aspects of cancer immunity.)
  • 21Diedericks BJS:Narkosehantering van heupvervangingchirurgie.Geneeskunde 23(11):711-719, 1981.(Anaesthesia for hip replacement.)
  • 22Diedericks BJS, Roelofse JA, de Wet JI:Ketanserin in the treatment of hypertension following coronary artery bypass surgery.A preliminary study.SAMJ 64: 569-571, 1983.
  • 23Diedericks BJS, Roelofse JA, Shipton EA, Gray IP, de Wet JI, Hugo SA:The renin-angiotensin-aldosterone system during and after cardiopulmonary bypass.SAMJ 64: 946-949, 1983.
  • 24Diedericks BJS, du Toit PW:Ventilasie teen hoë frekwensies.Geneeskunde 26(5): 167-171, 1983.(Ventilation at high frequency.)
  • 25Vermeulen PJ du P, Diedericks BJS, Smith MS, de WetJI:The prevalence of hepatitis B viral markers in Bloemfontein anaesthetists.SAMJ 71: 631-633, 1987.






  • 1Lamacraft G, Kenny PJ, Diedericks BJS, Joubert G.Obstetric anaesthesia: the source of the crisis.SAMJ 2008; 98:123-4


  • 2Lamacraft G, Schmidt MJ, Kenny PJ, Diedericks J.The Free State Level 1 and 2 Hospitals Obstetric Anaesthesia Audit:2002-3 versus 2005.SASA 2005 Congress Proceedings 21-25 March 2005


  • 3Lamacraft G, Hollingworth S, Dowie JG, Schmidt MJ, Diedericks BJS.A survey of the use of regional anaesthesia for caesarean sections in level 1 and 2 hospitals in the Free State. SAMJ, 94(9):762-3


  • 4Fagbuyi MA, Joubert G, Diedericks BJS, van Vuuren MVJ.Patient’s knowledge and beliefs regarding anaesthetic management.South African Medical Journal 2002, 92:288-9
  • 5Taljaard A, Diedericks J, Venter L, Kruger P, Joubert G.Premedication form a patient perspective: morphine, midazolam, hyroxyzine and placebo compared South African Medical Journal, 2002, 92(9):711-2


  • 6Skead L, Diedericks J, Joubert G.A comparison of haemodynamic data obtained by bioimpedance versus thermodilution methods.Int J Crit Care Med4(S):55, 1993


  • 7Skead L, Diedericks J, Joubert G.A comparison of haemodynamic data obtained by bioimpedance versus thermodilution methods.SAMJ 82:446, 1992
  • 8Liebenberg C, Diedericks J, Schall R, Stassen A.`n Vergelyking tussen esmolol en natriumnitroprussied vir die hantering van hipotensie narkose.SAMJ 82:454, 1992(Comparison of esmolol and SNP for deliberate hypotension.)
  • 9Thom F, Diedericks J, Ungerer MJ, Kruger P, Herbst CP, du Toit DJR.The effect of body posture on the rate of gastric emptying in adults.SAMJ 82:461, 1992
  • 10Diedericks J, Herbst CP, Uys N, Brümmer J.Die effek van pimobendan op ischemiese miokardium.SAMJ 82:451, 1992(Pimobendan in the ischaemic myocardium.)


  • 11Ungerer MJ, Diedericks J, van der Bergh PS, Kruger P, Beneke J, de Wet JI.Comparison of intranasal sufentanyl and oral trimeprazine for premedication of children. Br J Anaesth 66:406P, 1991
  • 12Homann LT, Ungerer MJ, Diedericks J, Herbst CP, Kruger P, de Wet JI, Calitz M.Ouderdomsverskille in gastriese lediging van vloeistowwe en vaste stowwe in volwassenes.SAMJ 80:641, 1991(Effect of age on gastric emptying.)
  • 13Diedericks J, Herbst CP, Hundt HKL, Uys NJ, Brümmer J.Hemodinamiese interaksies tussen propofol en esmolol.SAMJ 80:612, 1991(Haemodynamic interactions between propofol and esmolol.)
  • 14Van Zyl WJ, Ungerer MJ, Diedericks J, Herbst CP, Kruger P, de Wet JI, Calitz M.`n Vergelyking tussen die maagdeurgang van verskillende substanse.SAMJ 80:601, 1991(Gastric emptying of different substances.)
  • 15Van Rensburg SJ, Serfontein SJ, Dreyer J, Diedericks J, Hough J, Potgieter SV.Effek van aprotinien op bloedstolling na kardiale chirurgie.SAMJ 80:600, 1991(Aprotinine and coagulation after cardiac surgery.)


  • 16Diedericks J, Foëx P, Sear JW, Puttick RM, Ryder WA.Haemodynamic effects of propofol infusions:a dose-response study.European Journal of Anaesthesia, 1990.
  • 17Goldberg AH, Diedericks J, Foëx P,Ryder WA.Canine end-systolic pressure-length relationships:depressed by diltiazem, invalidated by ischaemia.Anaesth Analg 70:S128, 1990.
  • 18Diedericks J, Foëx P, Sear JW, RyderWA.Haemodynamic effects of propofol infusion:a dose-response study in compromised canine hearts.Br J Anaesth 64:393P, 1990.
  • 19Diedericks J, Goldberg A, and Foëx P.Canine end-systolic pressure-length relationships: invalid during ischaemia.Cardiovascular Journal of Southern Africa 1:39, 1990.
  • 20Diedericks J, Arnolda L, Rajagopalan B, and Foëx P.Myocardial function and high energy phosphates during ischaemia before and after verapamilCardiovascular Journal of Southern Africa 1:40, 1990.
  • 21Goldberg AH, Diedericks J, Sear JW, Ryder WA, Foëx P.Effect of diltiazem on regional left ventricular function in the presence of gradual coronary constriction in the dog.Anesthesiology 73:A637, September 1990
  • 22Diedericks J, Sear JW, Foëx P.The effect of propofol on hepatic blood flow.Anesthesiology 73:A624, September 1990

    1988 -1989:

  • 23Diedericks J, Leone BJ, Philbin DM, Foëx P:Effect of verapamil on myocardial function in the presence of fentanyl.Br J Anaesth 61(1): 107P-108P, 1988.
  • 24Diedericks J, Leone BJ, Foëx P:Regional differences in left ventricular wall motion.Anaesthesiology 69(3A): A46, 1988.
  • 25Diedericks J, Leone BJ,Sear JW,Foëx P,Ryder WA:Effect of nitrous oxide during basal propofol anaesthesia on myocardium with normal and critically restricted blood supply.Br J Anaesth 62:224P, 1989.
  • 26Leone BJ, Diedericks J, Foëx P,Ryder WA:Effect of nitrous oxide on function of compromised myocardium with afterloading in anaesthetised dogs.Anaesth Analg 68: S162, 1989.
  • 27Diedericks J, Leone BJ, Foëx P:Effect of acute after loading on myocardium with normal and critically restricted blood supply.Br J Anaesth 63: 234P, 1989.
  • 28Van der Merwe JHS, Diedericks BJS, Smith MS, Jansen Van Rensburg MN:Die langtermyn effektiwiteit van hepatitis B vaksinasie onder Bloemfontein se narkotiseurs.Die SA Tydskrif vir Natuurwetenskap en Tegnologie, Jaargang 7, No 3, 1988, 144 - 145 (Nav b) (letter)(Long term effectivity of hepatitis B vaccination an anaesthetists.)
  • 29De Wet EH, Diedericks BJS, Hugo JM en De Wet JJ:Bepaling van mannekragaanwending en opleidingsbehoeftes ten opsigte van narkosetoediening in die OVS.Die SA Tydskrif vir Natuurwetenskap en Tegnologie,Jaargang 7 No 3, 1988, 160 (Nav b)(letter)(Manpower an training requirements for Anaesthesia in the Free State.)



Area(s) of Expertise

  • Pediatriese narkose
  • Pediatriese kongenitale hartnarkose
  • Kardiale narkose
  • Kurrikulum ontwikkeling
  • Kliniese Praktykevaluasie
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