Keywords
Obstetricia
dispositivo intrauterino (DIU)
actividades eyecto-láctea
madres lactantes
How to Cite
Abstract
Se realizo un estudio de las actividades eyectoláctea (AE) y uterina (AU) en 50 madres lactantes, con el objeto de establecer los efectos inmediatos de la inserción de un dispositivo anticonceptivo intrauterino (DIU). La AE aumentó significativamente tanto en las 25 madres del grupo control en quienes solo se realizó un simulacro consistente en la instrumentación genital rutinaria para la inserción del DIU, como en las 25 madres del grupo experimental en quienes si se inserto el DIU. En contraste ninguno de los 2 procedimientos demostró tener efecto sobre la AU. La lactancia de la AE fue significativamente mas corta en el grupo experimental que en el control. Se concluye que la inserción del DIU no constituye per-se un estímulo para la liberación de oxitocina responsable del aumento de AE, la cual se correlaciona mas con la distensión de la vagina que del útero.
La distensión del útero podría ser un factor coadyuvante de la distensión vaginal, a juzgar por la latencia menor de la AE después de insertar el DIU.
SUMMARY
EFFECT OF GENITAL INSTRUMENTATION AND OF AN IUD INSERTION ON MILK-EJECTING AND UTERINE ACTIVITIES IN LACTATING MOTHERS
A study on milk - ejecting (MEA) and uterine (UA) activities was carried out in 50 lactating mothers, aiming to establish the inmediate effects of the insertion of a contraceptive intrauterine device (IUD). MEA increased significatively either in 25 mothers of the control group in whom the only thing done was a simulation consisting in routine genital instrumentation for IUD insertion,or the 25 mothers of the experimental group in whom IUD was actually inserted. On the other hand , none of the two procedures showed effect on UA. Latency of MEA was significativaly shorter for the experimental group than for the control group. lnsertion of IUD does not constitute per se an stimulus for oxitocyn release responsible for an increase in MEA, that correlates better with Vaginal distention than with uterine distention.
Uterine distention could be a coadjuvant factor of vaginal distention, as far as lower MEA latency after IUD insertion is concerned.
References
(2) Gómez-Rogers, C. Guilloff, E., and Zañartu, J. Milk-ejection: a study in women using intrauterine devices. Proc. 2nd. Internat. Confer. New York. 1964. Excpta. Med. Found. Internat. Confer. Series 86, Pág. 142.
(3)Behrman, S.L. Effect of intrauterine contraceptive device on uterine motility. In: Proc. Internat. Conf. on Intrauterine contraception. Excpta Med. Found. New York. 1964. pag. 239.
(4)Faundes., A. Gómez- Rogers, C. Guiloff E., Ibarra-Polo, A.A., Avendaño A., Quintanilla: R. Efecto inmediato de la inserción del DIU sobre la contractilidad del útero humano no grávid. II Reunión Asoc. Latinoamer. Invest. Reprod. Humana (ALIRH). Viña del Mar Chile 1966, p. 51a.
(5)Rozin, S. Schwartz, A. and Schenker, J.C. Studies of the mode of action of intrauterine contraceptive device. Obstet. Gynecol. 30:855, 1967.
(6)Bergtsson, L.P., and Moawad, A.H. The effect of the Lippes loop on human myometrial activity. Am. J. Obstet. Gynecol. 98:957, 1967.
(7)WHO scientific Group. Intrauterine devices: physiological and clinical aspects. Wild. Hith Org. techn. Rep. Ser. 397, 1968, pag. 14.
(8)Haimovich, L. Morel. R., Remedio, M.R., Rozada, H., Gil, B.E., y Sica- Blanco, Y. contractilidad del útero humano no grávido. Efectos del dispositivo intrauterino. Arch. Ginec. Obst. Montevideo, 23:25, 1968.
(9)Haímovich. L. Remedio. M. R. Rozada. H. Gil, B.E. and Sica-Blanco, Y. Uterine contractility in women using intrauterine devices. J. Reprod. Med. 5:47, 1970.
(10) Johnson. W.L. Theodore. W.E.K., and Brower. I.L., Motility of the human uterus before and after insertion of and IUD. Obstet. Gynecol. 28:526, 1966.
(11) Cobo. E. Uterine and milk-ejecting activities during human labor. J. Appl. Physiol. 24:317.1968.
(12) Bengtsson. L. Ph. The sponge -tipped catheter, a modification of open end catheter for recording of myometrial activity in vivo. J. Reprod. Fert. 16: 115, 1968
(13) Cobo, E. and Quintero, C.A. Milk - ejecting and antidiuretic activities under neurohypophyseal inhibition with alcohol and water overload, Am. J. Obstet. Gynecol. 105:877. 1969.
(14) Fuchs, A.R., Fuchs, F. Poblete, V.F., and Wagner. G. Effect of alcohol on oxytocin release in human lactation. Acta Endocrinol (Kbh) Suppl. 119:100,1967.
(15)Fitzpatrick, R.J. The posterior pituitary gland and the female reproductive tract. In: The Pituitary Gland, G.W. Harris and B.T. Donovan, Eds. Butterworth Co. London. Wol. 3, 1966. p. 459.
(16) Hays, R.L., and Vandermark. N.L., Effect of stimulation of the reproductive organs of the cow on the release of an oxytocin-like substance. Endocrinol. 52:634, 1953,
(17) Hammond, J. The physiology of milk and butter fat secretion. Vet. Rec. 48:519, 1936.
(18) Ely, F., and Petersen, W.E. Factors involved in the ejection of milk. J. Dairy Sci. 24:211, 1941.
(19) Cross, B.A., and Harris, G.W. The role of neurohypophysis in the milk-ejection reflex. J. Endocrino. 8:148, 1952.
(20)Debackere, M., and Peeters, G. The influence of vaginal distention on the milk ejection and diuresis in the la lactating Cow. Archiv. int. Pharmacodyn. 123:462, 1960.
(21)Debackere, M., Peeters, G., and Tuyttens, N. Reflex release of an oxytocic hormone by stimulation of genital organs in male and female sheep studied by a cross circulation technique. J. Endocrino. 22:321, 1961,
(22)Haterius, H.O., and Ferguson, J.K.W. Evidence for the homonal nature of the oxytocic principle Of the hy Pophysis. Ann. J. Physiol. 124:314., 1938.
(23)Ferguson, J.K.W. A study of the motility of the intact uterus at tem. Surg. Gynec, Obstet, 73:359, 1941.
(24)Fuchs, A.R., Olsen, P., and Petersen, K. Effect of distention of uterus and vagina on uterine motility and oxytocin release on puerperal rabbits . Act. Endocrinol. (Kbh) 50:239.1965
(25) Harris, G.W., and Pickles, W. R. Reflex stimulation of the neurohypophysis (posterior pituitary gland ) and the nature of the posterior pituitary hormone (s) Nature London 172:1049,1953.
(26) Campbell. B., and Petersen, W.E. Milk "let-down" and the orgasm in the human female. Human Biol- 25:165. 1953.
(27) Vasicka A., Kumaresan, P., Han, G.S., and Kumaresan, M. Plasma oxytocin in inititation of labor. Am. J. Obstet. Gynecol. 130: 263. 1978.
(28) Leake, R.D., Weitzman, R.E., Glatz, Th. H. and Fisher, D.A. Stimulation of oxytocin secretion in the human. 26th. Ann. Meeting. Soc. Gynecol. Invest. San Diego. Calif. 1979. Sci. Abstracts. pag 29
(29) Cobo, E. Prospective study of breast feeding and contraception in a rural area of Colombia. In preparation
(30) Lincoln, D.W., Hill, A. and Wakerley, J.B. The milk-ejection reflex of the rat: an intermitent function not abolished by surgical levels of anaesthesia. J. Endocrinol. 57:459, 1973.
(31) Sala, N. L. Luther, E.C. Arballo. J.C. and Cordero-Funes, J. Roles of temperature pressure. and touch in reflex milik ejection in lactat ing women. J. Appl. Physiol. 36:154. 1974.
(32) Larco Hoyle, R. Checan. Ensayo sobre las representaciones eróticas del Perú Precolombino, Ediciones. Nagel. Ginebra. 1966, pag. 48.
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