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Anatomical changes in Pregnancy

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Anatomical changes in
Pregnancy

10th

Prepared by
Hazrat Bilal Malakandi
semester, DPT, IPM&R KMU
Peshawar

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Group members
•
•
•
•
•

Hazrat Bilal
Heera Nawaz
Asmat Saeed
Bushra Bakht
Atif Nazir

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• Pregnancy is the fertilization and development
of one or more offspring, known as an embryo
or fetus, in a woman's uteru...

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Anatomical changes in Pregnancy

  1. 1. Anatomical changes in Pregnancy 10th Prepared by Hazrat Bilal Malakandi semester, DPT, IPM&R KMU Peshawar
  2. 2. Group members • • • • • Hazrat Bilal Heera Nawaz Asmat Saeed Bushra Bakht Atif Nazir
  3. 3. • Pregnancy is the fertilization and development of one or more offspring, known as an embryo or fetus, in a woman's uterus. • Pregnancy results in many anatomical changes • Few of them are discussed shortly in next slides
  4. 4. Changes in Reproductive organs I. Uterus: – The uterus expands from a strictly pelvic organ before 12 weeks to become an abdominal organ for the remainder of gestation. – the uterus increases in weight from 60 to 1000g (20 times its original weight). – In size, it changes from 6.5 to 32 cm.
  5. 5. • Its shape changes from elongated to oval by the second month, to round by midgestation, then back through oval to elongated at term (the end of a normal nine-month pregnancy). • Uterine expansion is caused by the growing fetus and an increase in connective tissue and in the size and number of blood vessels supplying the uterus
  6. 6. Cervix • The portion of the uterus connecting the body of the uterus and the vagina. • During pregnancy, the cervix is closed. A mucus plug forms over the cervix ,providing a protective barrier between the vagina and the uterine contents.
  7. 7. • During labour and delivery, the cervix shortens and widens (or dilates). • A 10 cm opening is left between the uterus and the vagina to allow for passage of the fetus into the birth canal. • If the cervix begins dilating prematurely, it is sometimes stitched together during the second trimester, until the fetus in mature. This procedure is known as a cerclage.
  8. 8. Changes in Musculo-skeletal system Ligaments • Placental production of the hormone relaxin causes pelvic ligaments and the pubic symphysis to relax, widen, and become more flexible. • This increased motility eases birth passage, but it may also result in a waddling gait during pregnancy. • Changes in joint laxity occurring during pregnancy. By M Calguneri, H A Bird, V Wright http://ard.bmj.com/content/41/2/126
  9. 9. Lumbar region • The expanding uterus causes an progressive lumbar lordosis. • Lumbar lordosis leads to low back pain in 40 to 50 percent of all pregnant women. Carlson HL, Carlson NL, Pasternak BA, Balderston KD. Understanding and managing the back pain of pregnancy. Curr Womens Health Rep 2003; 3:65. • Pregnancy and Back Pain . . . . By Kristen Schott, PT, MPT http://www.sportspti.com/research/articles/pregnancy-and-back-pain.aspx
  10. 10. Increased lordosis in pregnancy due to increased anterior load.
  11. 11. Center of Gravity • The increasing bulkiness of the abdomen changes the woman's center of gravity forward. This shift increases the stress on your joints and causes your back to curve forward. • The change of the center of gravity location in late pregnancy is temporary and two months after delivery the center of gravity is located as it was at the beginning of pregnancy. • Journal of Huan Kinetics. Volume 26, Issue -1, Pages 5–11, ISSN (Online) 18997562, ISSN (Print) 1640-5544, DOI: 10.2478/v10078-010-0042-1, January 2011
  12. 12. Changes in Respiratory system • The diaphragm is progressively elevated and compressed. Possibly because of expansion and elevation of the rib cage. • The lungs are compressed due to growing uterus in later pregnancy making it more difficult to breathe deeply.
  13. 13. Postural changes: During pregnancy, postural changes occurred. • These changes include • forward head, • rounded shoulders, • increased lumbar lordosis, • Center of gravity shift, • hyperextended knees, and • pronated feet.
  14. 14. • Muscular changes are also typical. often noted alterations include shortened hip flexors, lower back musculature, and pectorals. • Abdominal muscles, neck, and upper back muscle groups elongate. • Functional Changes in Back Muscle Activity Correlate With Pain Intensity and Prediction of Low Back Pain During Pregnancy • http://www.ncbi.nlm.nih.gov/pubmed/9779673
  15. 15. Changes in cutaneous system • They are usually more marked below the umbilicus, on the breasts and may appear on the buttocks and thighs. • In some women they are not marked or even don't appear during pregnancy. • Falling of hairs and brittleness of nails may occur during pregnancy.
  16. 16. Pigmentation It is due to suprarenal changes, it usually begins to appear after the 4th month. The pigmentation may appear anywhere but the commonest sites are: 1. Linea nigra: which is a line of pigmentation between the umbilicus and the symphysis pubis. 2. Cloasma gravidarum or mask face of pregnancy which is butterfly pigmentation of the forehead, nose, upper lip and the adjoining parts of the checks.
  17. 17. Linea nigra butterfly pigmentation
  18. 18. Changes in weight • In normal pregnancy the average gain is – 0.3 Kg/week up to 18 weeks, – 0.45 Kg/week from 18-28 weeks and – a slight reduction with a rate of 0.36- 0.41 Kg/week until term. • Slight weight loss may occur in the last 2 weeks. The average weight gain for primigravidae is 12.5 Kg. and is probably about 0.9 Kg. less for multigravidae.
  19. 19. Weight gain is produced by: – Fetus ----------- ------3.63-3.88 Kg – Placenta -------------- 0.48-0.72 Kg – Amniotic fluid ------- 0.72-0.97 Kg – Uterus and breasts - 2.42-2.66 Kg – Blood and fluid ------ 1.94-3.99 Kg – Muscle and fat ------ 0.48-2.91 kg Total= 9.70-14.55Kg
  20. 20. Anatomy comparison
  21. 21. Milk Ducts
  22. 22. Lungs
  23. 23. Diaphragm
  24. 24. Stomach
  25. 25. Liver
  26. 26. Intestines
  27. 27. Placenta
  28. 28. Umbilical Cord
  29. 29. Uterus
  30. 30. Bladder
  31. 31. cervix
  32. 32. Vagina

Editor's Notes

  • Myopathic gait (or waddling gait) is a form of gait abnormality.The "waddling" is due to the weakness of the proximal muscles of the pelvic girdle.The patient uses circumduction to compensate for gluteal weakness.
  • Haemostatic changes in pregnancyhttp://www.sciencedirect.com/science/article/pii/S0049384804004475
  • Pregnancy-Associated Changes in the Thyroid-Stimulating Antibody of Graves’ Disease and the Relationship to Neonatal Hyperthyroidism*http://jcem.endojournals.org/content/57/5/1036.short

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