C. Heyns
Stellenbosch University
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Publication
Featured researches published by C. Heyns.
South African Medical Journal | 2009
Trollip Gs; M Fisher; Naidoo A; Theron Pd; C. Heyns
OBJECTIVE To evaluate the safety and efficacy of vasectomy performed under local anaesthesia by junior doctors at a secondary level hospital as part of a free family planning service. METHOD Men requesting vasectomy were counselled and given written instructions to use alternative contraception until two semen analyses 3 and 4 months after vasectomy had confirmed azoospermia. Bilateral vasectomy was performed as an outpatient procedure under local anaesthesia by junior urology registrars. Statistical analysis was performed using the Mann-Whitney, Kruskal-Wallis, Fishers exact or Spearmans rank correlation tests as appropriate. RESULTS Between January 2004 and December 2005, 479 men underwent vasectomy at Karl Bremer Hospital, Western Cape, South Africa; their average age was 36.1 (range 21 - 66) years, they had a median of 2 (range 0 - 10) children, and only 19% had 4 or more children. The average operation time was 15.5 (range 5 - 53) minutes. Complications occurred in 12.9%; these were pain (7.3%), swelling (5.4%), haematoma (1.3%), sepsis (1%), difficulty locating the vas (1%), vasovagal episode (0.6%), bleeding (0.6%), wound rupture (0.4%) and dysuria (0.2%) (some men had more than one complication). Of the men 63.3% returned for one semen analysis and 17.5% for a second. The vasectomy failure rate ranged from 0.4% (sperm persisting > 365 days after vasectomy) to 2.3% (sperm seen > 180 days after vasectomy and/or in the second semen specimen). No pregnancies were reported. The complication (5.6%) and failure rates (0%) were lowest for the registrar who had performed the smallest number of vasectomies and whose average operation time was longest. Comparing the first one-third of procedures performed by each of the doctors with the last one-third, there was a significant decrease in average operating times but not in complication rates. CONCLUSIONS Vasectomy can be performed safely and effectively by junior doctors as an outpatient procedure under local anaesthesia, and should be actively promoted in South Africa as a safe and effective form of male contraception.
South African Journal of Surgery | 2014
C. Heyns; J. Basson; A van der Merwe; A. Zarrabi
Introduction. Transrectal biopsy in suspected adenocarcinoma of the prostate (ACP) may cause significant morbidity and even mortality. A strong association between serum prostate-specific antigen (PSA) and tumour burden exists. If biopsy can be avoided in advanced disease, much morbidity and cost may be saved.Objective. To evaluate the reliability of using PSA and clinical features to establish a non-histological diagnosis of ACP.Methods. Androgen deprivation therapy (ADT) was used in 825 (56.2%) of 1 467 men with ACP. The diagnosis of ACP was made histologically in 607 patients (73.6%) and clinically alone in 218 (26.4%), based on a serum PSA level of >60 ng/ml, and/or clinical evidence of a T3 - T4 tumour on digital rectal examination, and/or imaging evidence of metastases. We compared two randomly selected groups treated with bilateral orchidectomy (BO) based on a clinical-only (n=90) v. histological (n=96) diagnosis of ACP.Results. There was no significant difference between the groups with regard to mean follow-up (26.1 v. 26.8 months), documented PSA relapse (70% v. 67.7%), and patients alive at last follow-up (91.1% v. 95.8%). ZAR1 068 200 (US
African Journal of Urology | 2012
C. Heyns; J. P. Van Der Merwe; J. Basson; A van der Merwe
1 = ZAR8) was saved by treating men with advanced ACP on the basis of a clinical (non-histological) diagnosis only, and a total of ZAR24 321 000 was saved by using BO instead of luteinising hormone-releasing hormone agonists as ADT.Conclusion. A reliable clinical (non-histological) diagnosis of advanced ACP can be made based on serum PSA and clinical features. This avoids the discomfort and potentially serious complications of biopsy and saves cost.
Canadian Journal of Urology | 2009
A van der Merwe; A. Zarrabi; J. Basson; J Stander; C. Heyns
African Journal of Urology | 2015
Du Plessis; A van der Merwe; C. Heyns
African Journal of Urology | 2011
Timothy R. Rebbeck; Charnita Zeigler-Johnson; C. Heyns; Serigne Magueye Gueye
Urology | 2009
J. P. Van Der Merwe; J. Basson; A van der Merwe; C. Heyns
African Journal of Urology | 2010
C. Van der Walt; S. P. Jansen van Vuuren; C. Heyns
The Journal of Urology | 2014
Marthin Els; C. Heyns
South African Journal of Surgery | 2014
A van der Merwe; C. Heyns