The purpose of this article is twofold: (a) to compare psychological distress as measured via self-reported perceived stress, sleep, and fatigue levels in lactating mothers of a term infant and mothers of a preterm infant and(b) to determine whether the addition of psychological distress to a previous model predicts milk volume at Postpartum Week 6 by gestation group. The convenience sample of 95 mothers of a preterm infant (31 weeks) and 98 mothers of a term infant completed the Perceived Stress Visual Analogue Scale, Richards-Campbell Sleep Questionnaire, and the Fatigue Visual Analog Scale. Stress, sleep difficulty, and fatigue levels decreased during the 6-week study period for mothers of a term but not for mothers of a preterm infant. Perceived stress, sleep difficulty, and fatigue during the first 6 weeks postpartum were not related to milk volume; thus, the mother’s perceived psychological distress had no apparent effect on lactation.
Affonso, D. D., Hurst, I., Mayberry, L. J., Yost, K., & Lynch, M. E. (1992). Stressors reported by mothers of hospitalized premature infants. Neonatal Network, 11, 63-70.
2.
Bentler, P., Lettieri, D., & Austin, G. (1976). Data analysis strategies and designs for substance abuse. Rockville, MA: National Institute on Drug Abuse.
3.
Blyton, D. M., Sullivan, C. E., & Edwards, N. (2002). Lactation is associated with an increase in slow-wave sleep in women. Journal of Sleep Research, 11, 297-303.
4.
Bozoky, I., & Corwin, E. J. (2002). Fatigue as a predictor of postpartum depression. Journal of Obstetric, Gynecologic, and Neonatal Nursing, 31, 436-443.
5.
Brooten, D., Gennaro, S., Brown, L. P., Butts, P., Gibbons, A., Bakewell-Sachs, S., et al. (1988). Anxiety, depression, and hostility in mothers of preterm infants. Nursing Research, 37, 213-216.
6.
Campbell, I. (1986). Postpartum sleep patterns of mother-baby pairs. Midwifery, 2(4), 193-201.
7.
Carty, E. M., Bradley, C., & Winslow, W. (1996). Women’s perceptions of fatigue during pregnancy and postpartum. Clinical Nursing Research, 5, 67-80.
8.
Catlett, A. T., Miles, M. S., & Holditch-Davis, D. (1994). Maternal perception of illness severity in premature infants. Neonatal Network, 13, 45-49.
9.
Dewey, K. G., Lovelady, C. A., Nommsen-Rivers, L., McCrory, M. A., & Lonnerdal, B. (1994). A randomized study of the effects of aerobic exercise by lactating women on breast-milk volume and composition. New England Journal of Medicine, 330(7), 449-453.
10.
Elliott G. R., & Eisdorfer, C. (Eds.). (1982). Stress and human health analysis and implications for research. New York: Springer.
11.
Gardner, D. L. (1991). Fatigue in postpartum women. Applied Nursing Research, 4(2), 57-62.
12.
Gay, C. L., Lee, K. A., & Lee, S. -Y. (2004). Sleep patterns and fatigue in new mothers and fathers. Biological Research for Nursing, 5, 311-318.
13.
Gennaro, S. (1988). Postpartal anxiety and depression in mothers of term and preterm infants. Nursing Research, 37, 82-84.
14.
Gennaro, S., & Hennessy, M. D. (2003). Psychological and physiological stress: Impact on preterm birth. Journal of Obstetric, Gynecologic, & Neonatal Nursing, 32, 668-675.
15.
Grosvenor, C. E., & Mena, F. (1967). Effect of auditory, olfactory and optic stimuli upon milk ejection and suckling-induced release of prolactin in lactating rats. Endocrinology, 80, 840-846.
16.
Higuchi, T., Honda, K., Takano, S., & Negoro, H. (1988). Reduced oxytocin response to osmotic stimulus and immobilization stress in lactating rats. Journal of Endocrinology, 116, 225-230.
17.
Higuchi, T., Negoro, H., & Arita, J. (1989). Reduced responses of prolactin and catecholamine to stress in the lactating rat. Journal of Endocrinology, 122, 495-498.
18.
Hill, P. D., Aldag, J. C., Chatterton, R. T., & Zinaman, M. J. (2005a). Comparison of milk production between mothers of preterm and term infants: The first six weeks after birth. Journal of Human Lactation, 21(1), 22-30.
19.
Hill, P. D., Aldag, J. C., Chatterton, R. T., & Zinaman, M. J. (2005b). Primary and secondary mediators influence on milk production in lactating mothers of preterm and term infants. Journal of Human Lactation.
20.
Hiser, P. L. (1987). Concerns of multiparas during the second postpartum week. Journal of Obstetrics, Gynecology, & Neonatal Nursing, 16, 195-203.
21.
Horiuchi, S., & Nishihara, K. (1999). Analyses of mothers’ sleep logs in postpartum periods. Psychiatry and Clinical Neurosciences, 53, 137-139.
22.
Lau, C. (1992). Effects of various stressors on milk release in the rat. Physiology & Behavior, 51, 1157-1163.
23.
Lau, C. (2001). Effects of stress on lactation. In R. J. Schanler (Ed.), Breastfeeding 2001, Part I: The evidence of breastfeeding (pp. 221-234). Philadelphia: W. B. Saunders.
24.
Lau, C. (2002). The effect of stress on lactation—Its significance for the preterm infants. In M. K. Davis, C. E. Isaacs, L. A. Hanson, & A. L. Wright (Eds.), Integrating population outcomes, biological mechanisms and research methods in the study of human and lactation (Vol. 503, pp. 91-97). New York: Kluwer Academic/Plenum.
25.
Lee, K. A., & DeJoseph, J. F. (1992). Sleep disturbances, vitality, and fatigue among a select group of employed childbearing women. Birth, 19, 208-213.
26.
Lee, K. A., & Zaffke, M. (1999). Longitudinal changes in fatigue and energy during pregnancy and the postpartum period. Journal of Obstetric, Gynecologic, & Neonatal Nursing, 28, 183-191.
27.
Lobel, M. (1994). Conceptualizations, measurement, and effects of prenatal maternal stress on birth outcomes. Journal of Behavioral Medicine, 17, 225-272.
28.
Lubin, B., Zuckerman, M., Hanson, P. G., Armstrong, T., Rinck, C. M., & Seever, M. (1986). Reliability and Validity of the Multiple Affect Adjective Check List-Revised. Journal of Psychopathology and Behavioral Assessment, 8(2), 103-117.
29.
Meier, P., Brown, L. P., & Hurst, N. M. (1999). Breastfeeding the preterm infant. In J. M. Riordan & K. G. Auerbach(Eds.), Breast feeding and human lactation (2nded., pp. 449-481). Boston: Jones and Bartlett.
30.
Meyer, E. C., Garcia, C. T., Seifer, R., Ramos, A., Kilis, E., & Oh, W. (1995). Psychological distress in mothers of preterm infants. Journal of Developmental and Behavioral Pediatrics, 16, 412-417.
31.
Miles, M. S., Holditch-Davis, D., Burchinal, P., & Nelson, D. (1999). Distress and growth outcomes in mothers of medically fragile infants. Nursing Research, 48, 129-140.
32.
Milligan, R. A., Flenniken, P. M., & Pugh, L. C. (1996). Positioning intervention to minimize fatigue in breastfeeding women. Applied Nursing Research, 9, 67-70.
33.
Milligan, R. A., Lenz, E. R., Parks, P. L., Pugh, L. C., & Kitzman, H. (1996). Postpartum fatigue: Clarifying a concept. Scholarly Inquiry for Nursing Practice: An International Journal, 10, 279-291.
34.
Milligan, R. A., Parks, P. L., Kitzman, H., & Lenz, E. R. (1997). Measuring women’s fatigue during the postpartum period. Journal of Nursing Measurement, 5, 3-16.
35.
Natelson, B. H., Ottenweller, J. E., Cook, J. A., Pitman, D., McCarty, R., & Tapp, W. N. (1988). Effect of stressor intensity on habituation of the adrenocortical stress response. Physiology & Behavior, 43, 41-46.
36.
Nishihara, K., & Horiuchi, S. (1998). Changes in sleep patterns of young women from late pregnancy to postpartum: Relationships to their infants’ movements. Perceptual & Motor Skills, 87, 1043-1056.
37.
Pugh, L. C. (1993). Childbirth and the measurement of fatigue. Journal of Nursing Measurement, 1, 57-66.
38.
Pugh, L. C., & Milligan, R. (1993). A framework for the study of childbearing fatigue. Advances in Nursing Science, 15, 60-70.
39.
Pugh, L. C., & Milligan, R. A. (1995). Patterns of fatigue during childbearing. Applied Nursing Research, 8, 140-146.
40.
Quillin, S. I. (1997). Infant and mother sleep patterns during 4th postpartum week. Issues in Comprehensive Pediatric Nursing, 20, 115-123.
41.
Reeves, N., Potempa, K., & Gallo, A. (1991). Fatigue in early pregnancy: An exploratory study. Journal of Nurse-Midwifery, 36, 303-309.
42.
Revill, S. I., Robinson, J. O., Rosen, M., & Hogg, M. I. J. (1976). The reliability of a linear analogue for evaluating pain. Anaesthesia, 31, 1191-1198.
43.
Richards, K. C. (1987). Techniques for measurement of sleep in critical care. Focus on Critical Care, 14(4), 34-40.
44.
Richards, K. C., O’Sullivan, P. S., & Phillips, R. L. (2000). Measurement of sleep in critically ill patients. Journal of Nursing Measurement, 8(2), 131-144.
45.
Ruchala, P. L., & Halstead, L. (1994). The postpartum experience of low-risk women: A time of adjustment and change. Maternal-Child Nursing Journal, 22, 83-89.
46.
Sable, M. R., & Wilkinson, D. S. (2000). Impact of perceived stress, major life events and pregnancy attitudes on low birth weight. Family Planning Perspectives, 32, 288-294.
47.
Shinkoda, H., Matsumoto, K., & Park, Y. M. (1999). Changes in sleep-wake cycle during the period from late pregnancy to puerperium identified through the wrist actigraph and sleep logs. Psychiatry and Clinical Neurosciences, 53, 133-135.
48.
Singer, L. T., Salvator, A., Guo, S., Collin, M., Lilien, L., & Baley, J. (1999). Maternal psychological distress and parenting stress after the birth of a very low-birth-weight infant. Journal of the American Medical Academy, 281, 799-805.
49.
SPSS Inc. (2003). SPSS 12.0.1 for Windows [Computer software]. Chicago: Author.
50.
Swain, A. M., O’Hara, M. W., Starr, K. R., & Gorman, L. L. (1997). A prospective study of sleep, mood, and cognitive function in postpartum and nonpostpartum women. Obstetrics & Gynecology, 90, 381-386.
51.
Troy, N. W. (1999). A comparison of fatigue and energy levels at 6 weeks and 14 to 19 months postpartum. Clinical Nursing Research, 8, 135-152.
52.
Ueda, T., Yokoyama, Y., Irahaara, M., & Aono, T. (1994). Influence of psychological stress on suckling-induced pulsatile oxytocin release. Obstetrics & Gynecology, 84, 259-262.
53.
Wambach, K. A. (1998). Maternal fatigue in breast feeding primiparae during the first nine weeks postpartum. Journal of Human Lactation, 14, 219-229.
54.
Werner, J. S. (1993). Stressors and health outcomes: Synthesis of nursing research, 1980-1990. In J. S. Barnfather & B.L. Lyon (Eds.), Stress and coping: State of the science and implications for nursing theory, research, and practice (pp. 111-142). Indianapolis, IN: Sigma Theta Tau International Center Nursing Press.
55.
Werner, J. S., Frost, M. H., & Orth, K. S. (2000). Stressors and health outcomes: Synthesis of Nursing Research, 1991-1995.In J. S. Werner & C. A. Frye (Eds.), Stress and coping state of the science and implications for nursing theory, research, andpractice 1991-1995 (pp.9-55). Glenview, IL: Glenview Midwest Nursing Research Society.
56.
West, C. P. (1980). Factors influencing the duration of breast-feeding. Journal of Biosocial Science, 12, 325-331.
57.
Wewers, M. E., & Lowe, N. K. (1990). A critical review of visual analogue scales in the measurement of clinical phenomena. Research in Nursing & Health, 13, 227-236.
