Ockert Stephanus Heyns, South African gynaecologist and obstetrician (Paarl, Cape Province 27 November 1906 – 1973)

Designed Heyns abdominal decompression apparatus

A device to improve foetal oxygenation. Trans. Coll. Phys. S. Afr. 5:1, 1961


With J. Black & J. Gillman. The value of basal fat in the human uterus as an indicator of optimum progesterone activity. J. Clin. Endocr. 1:547, 1941

A study of the Bantu female pelvis. J. Anatomy 78:151-66, 1944

Sexual differences in the pelvis. South Afr. J. Med. Science 12:17-20, 1947

Analgesia and anaesthesia in obstetrics. S. Afr. J. Med. 21(6):190-4, 1947

With J.E. Kerrich. The number of vertebrae in the fetal Bantu sacrum. Am. J. Phys. Anthropol. 5(1):67-78, 1947

The influence of x-ray measurements on the pelvic brim index. Br. J. Radiol. 20(229):31-3, 1947  

Preliminary report on pelvic brim index (of Bantu). J. Obst. Gynecol. Brit Emp. 54:39-64, 1947

With E.C. Halliday. The activity of gravid uterus. J. Obst. Gynae. Br. Empire 59(3):309-22, 1952

With E.C. Halliday. Uterine activity and electrical response. J. Obst. Gynae. Br. Empire 62(2):155-61, 1955

With E.C. Halliday & G.W. Van Jacobs. Changes in mechanical properties of the cervix under the influence of pregnancy. J. Obst. Gynae. Br. Empire 65(3):409-13, 1958

Abdominal decompression in the first stage of labour. J. Obst. Gyn. Brit. Comm. 66:220-8, 1959

With W.A.B. Roberts & H.G. Smulian. Decompression: new aid in second and third stage of labor. J. Int. Coll. Surg. 34:333-43, 1960

With J.M. Samson & J.A.C. Graham. Influence of abdominal decompression on intra-amniotic pressure and fetal oxygenation. Lancet 1:289-92, 1962

With J. M. Samson & W.A.B. Roberts. An analysis of in fants whose mothers had decompression during pregnancy. Med. Proc. 8(16):307-11, 1962

The improvement of foetal oxygenation by abdominal decompression. Bull. Soc. R. Belge Gynecol. Obst. 32:29-34, 1962

With J.A. Blecher. Abdominal decompression in the treatment of toxaemia of pregnancy. Lancet 2:621-4, 1967