Day 1 - 5 postpartum is significant in breastfeeding success due to what process?

Developing Prolactin Receptor Sites

Decreasing Oxytocin

Decreasing Estrogen

Increasing Estrogen

Answer and Explanation

The Correct Answer is A

A) Developing Prolactin Receptor Sites:
The first 1-5 days postpartum are critical for breastfeeding success because this period is when the prolactin receptor sites in the mother's breast tissue are being established. Prolactin is the hormone responsible for milk production, and the more prolactin receptor sites developed, the more efficiently the body can respond to the baby’s sucking and produce milk. This is the foundation for a successful breastfeeding relationship, as proper stimulation in these early days encourages the long-term supply of milk.

B) Decreasing Oxytocin:
Oxytocin is the hormone responsible for milk ejection (let-down) and is crucial for breastfeeding. In the early postpartum period, oxytocin levels are actually high and remain important for milk release, not decreasing. A decrease in oxytocin would impair milk ejection, which could affect breastfeeding success.

C) Decreasing Estrogen:
Estrogen levels drop significantly after delivery, which is part of the process that allows milk production to take precedence over pregnancy-related hormones. However, the drop in estrogen is more of a secondary event in breastfeeding success compared to the development of prolactin receptor sites. Estrogen primarily impacts lactation later, such as with the onset of menstruation.

D) Increasing Estrogen:
Estrogen levels rise during pregnancy, but they begin to decrease rapidly after birth. Higher levels of estrogen inhibit lactation during pregnancy, which is why the postpartum drop in estrogen is important for milk production to commence. However, an increase in estrogen would actually hinder the initiation of lactation and is not a factor in the success of breastfeeding in the early postpartum period.

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Correct Answer is B

Explanation

A) Pauses in respiration lasting 30 seconds:
Pauses lasting longer than 20 seconds or accompanied by other signs of distress would warrant further evaluation. A 30-second pause by itself, without additional concerning symptoms, is generally not a reason for immediate action.

B) Respiratory rate 36, crackles present bilaterally:
The presence of bilateral crackles is concerning. Crackles can indicate fluid in the lungs, possibly from retained amniotic fluid or respiratory distress syndrome (RDS). In a term newborn, bilateral crackles at this time, especially if accompanied by tachypnea or other signs of respiratory distress, may indicate a serious respiratory issue, such as aspiration pneumonia or RDS. Immediate assessment and intervention are necessary to ensure the infant is breathing adequately and that there are no underlying complications.

C) Apical heart rate of 160 with mild systolic murmur heard:
An apical heart rate of 160 is within the normal range for a newborn (typically 120-160 bpm). A mild systolic murmur is also not uncommon in newborns and may be benign, especially in the first few days of life. Murmurs are often transient and can be caused by normal circulatory changes as the newborn's cardiovascular system adjusts after birth. Although a heart murmur should be monitored, it is not typically an urgent concern unless associated with signs of poor perfusion or other cardiac symptoms.

D) Small white papules on nose and chin:
These small white papules are likely milia, which are common and harmless in newborns. Milia are keratin-filled cysts that typically appear on the face, especially around the nose and chin. They are a normal finding and resolve on their own without treatment. These papules do not require immediate action.

Correct Answer is ["0.5"]

Explanation

Given:

Desired dose: Vitamin K 0.5 mg IM

Available concentration: Vitamin K 1 mg/1 mL

To find:

Volume to administer (in mL)

Step 1: Set up the proportion

We can use the following proportion to solve the problem:

(Desired dose) / (Available concentration) = Volume to administer

Step 2: Substitute the values

Plugging in the given values, we get:

(0.5 mg) / (1 mg/1 mL) = Volume to administer

Step 3: Simplify

To simplify, we can invert the denominator and multiply:

(0.5 mg) x (1 mL / 1 mg) = Volume to administer

The "mg" units cancel out, leaving us with:

(0.5 x 1 mL) / 1 = Volume to administer

Step 4: Calculate

Performing the multiplication and division, we get:

0.5 mL / 1 = Volume to administer

0.5 mLVolume to administer

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Day 1 - 5 postpartum is significant in breastfeeding success due to what process?

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Naxlex Comprehensive Predictor Exams

The nurse is assessing a newborn at 1 hour of age. Which finding requires the nurse's immediate action?

Correct Answer is B

Explanation

The nurse is going to administer a dose of Vitamin K (Aquamephyton) 0.5mg IM to a newborn. Available: Vitamin K 1 mg/1ml. How many mLs would the nurse administer? (Please answer numerically only)

Correct Answer is ["0.5"]

Explanation

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