by Jean Cotterman RNC, IBCLC
More health care providers are observing that mothers who receive multiple intrapartum IV's experience delay in expected postpartum fluid shift. Increased edema during the puerperium complicates engorgement, increases sub-areolar tissue resistance, distorts the nipple and interferes with comfortable, efficient latching. Edema may appear early, or later, within 48-96 hours, often lasting 10-14 days. (This may depend on both the quantity of IV fluid given and the time of infusion in relation to placental delivery, the stimulus for lactogenesis II.)
Reverse pressure softening (RPS) is a simple intervention that has proven very helpful in the first 14 days postpartum. RPS uses gentle positive pressure to soften a 1-2 inch area of the areola surrounding the base of the nipple, temporarily moving some swelling slightly backward and upward into the breast. RPS may be applied by the health care provider, and/or taught to the mother/significant others, if necessary, over the telephone.
Interstitial fluid volume increases 30% above normal before edema becomes visible. (Guyton) To contain edema, areolar tissues must expand, limiting their ability to extend the nipple well into the baby's mouth. Early proactive use of RPS causes no harm and may facilitate increased milk transfer, reduce risk of nipple trauma, and help resolve engorgement.
Conversely, pumping may attract edema into the flange area, especially at maximum vacuum settings. Areolar tissue may then appear "thickened", seeming to "bury" the subareolar ducts. Then, neither infant tongue action, fingertip expression nor the pump itself removes milk very successfully.
RPS is best performed immediately before each attempt to latch, for as many feedings as needed:
•The mother may prefer to apply RPS herself, or the HCP, with her permission, may apply RPS
•Facing the mother, or
•From slightly behind the mother, reaching over her shoulders
•Or place his/her fingers over those of the mother, to reinforce pressure
•The firmer or more swollen the areola, the more time is needed to achieve pliability
•RPS often forms temporary "dimples" or "pits," but edema soon re-enters the pits after pressure is released
•Positioning the mother with severe edema flat on her back during RPS delays re-entry of swelling, allowing a longer window of time for latching
•Firmly but gently, press steadily on the areola, right at the nipple base
•Pressure should not be firm enough to cause pain. Avoid discomfort with less pressure for longer intervals
•Press inward toward the chest wall for a full 60 seconds or longer (10-20 minutes or more if needed. This is a good time for instructions.)
•Any finger combination may be used (See diagrams)
•Mothers may find short nails with curved fingertips of both hands the most effective method
•One-handed methods are convenient if the other hand is busy
•HCP's may find straight-fingers or two-thumb methods more convenient
•Use the flats of two thumbs or the first several fingers on each hand lengthwise above and below the nipple, creating a 1-2 inch long depression
•Continue to alternate in opposite quadrants, with repeated 2 minute periods of pressure, partially overlapping the first set of pits, to keep edema displaced from the entire area at the base of the nipple
•After RPS, additional fingertip expression to further soften the areola is much easier, more comfortable and more productive. Creating a special niche for the chin often permits deeper latching.
Steady, gentle pressure inward toward the chest wall is exerted for a full 60 seconds or longer (2-3 minutes, repeated if needed), focusing on the areola where it joins the base of the nipple. (A mother can be encouraged to sing a lullaby rather than watch the clock.)
If her fingernails are quite short, she can press with the curved fingertips of both hands simultaneously, with the nails nearly touching the sides of the nipple.