A nurse is preparing to administer gentamicin 2 mg/kg IM to a client who has pelvic inflammatory disease and weighs 132 lb. Available is gentamicin injection 40 mg/mL. How many mL should the nurse administer?

(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Ultrasonography is a diagnostic imaging technique that uses high-frequency sound waves to create images of the internal structures of the body. It is a safe and noninvasive method that can provide valuable information about the pregnancy, such as the number, size, location, and health of the fetus(es), the placenta, the amniotic fluid, and the uterus.
Ultrasonography can be performed at any time during pregnancy, but it is especially useful in the first trimester (the first 12 weeks of pregnancy) for several reasons, such as:

- To confirm the pregnancy and rule out ectopic pregnancy (a pregnancy that occurs outside the uterus) or molar pregnancy (a pregnancy that develops into an abnormal mass of tissue)
- To determine gestational age (the length of time since the first day of the last menstrual period) and estimate due date (the expected date of delivery)
- To screen for chromosomal abnormalities (such as Down syndrome) or structural defects (such as spina bifida) in the fetus
- To identify multiple gestations (such as twins or triplets) or complications (such as miscarriage or
bleeding)
One of the main uses of ultrasonography in the first trimester is to determine gestational age. This is important because it can affect many aspects of prenatal care and delivery, such as:
- The timing and accuracy of other tests and procedures
- The monitoring and evaluation of fetal growth and development
- The identification and management of potential problems or complications
- The planning and preparation for labor and delivery
Gestational age can be determined by measuring the crown-rump length (CRL) of the fetus, which is the distance from the top of the head to the bottom of the spine. The CRL can be measured by using a transvaginal ultrasound (an ultrasound probe that is inserted into the vagina) or a transabdominal ultrasound (an ultrasound probe that is moved over the abdomen). The CRL can be compared to a standard growth chart to estimate gestational age. The CRL measurement is most accurate between 7 and 13 weeks of pregnancy .
Therefore, the newly licensed nurse who says that ultrasound is used to determine gestational age in the first trimester indicates an understanding of the teaching.

The other statements show a lack of knowledge or misunderstanding of the uses of ultrasonography in the first trimester:
- a) "Ultrasound is used to observe for placental maturity in the first trimester." This is not correct because placental maturity is not assessed in the first trimester. Placental maturity refers to the changes that occur in the placenta as it ages and prepares for delivery. Placental maturity can be evaluated by using a grading system that ranges from 0 to 3, based on the appearance of calcifications (deposits of calcium) in the placenta. Placental maturity can be assessed by using a transabdominal ultrasound in the third trimester (after 28 weeks of pregnancy).
- b) "Ultrasound is used to detect intrauterine growth restriction in the first trimester." This is not correct because intrauterine growth restriction (IUGR) is not detected in the first trimester. IUGR is a condition in which the fetus does not grow as expected and has a low birth weight for its gestational age. IUGR can be caused by various factors, such as placental insufficiency, maternal malnutrition, infection, or chronic disease. IUGR can affect fetal development and increase the risk of complications, such as hypoxia, hypoglycemia, or stillbirth. IUGR can be diagnosed by measuring fetal growth parameters, such as abdominal circumference, head circumference, femur length, and estimated fetal weight. These measurements can be obtained by using a transabdominal ultrasound in the second or third trimester (after 20 weeks of pregnancy).

- d) "Ultrasound is used to perform a biophysical profile in the first trimester." This is not correct because a biophysical profile (BPP) is not performed in the first trimester. A BPP is a test that evaluates fetal well-being by assessing five parameters: fetal movement, fetal tone, fetal breathing, amniotic fluid volume, and fetal heart rate. A BPP can help detect fetal distress or hypoxia and guide management decisions. A BPP can be performed by using a combination of transabdominal ultrasound and nonstress test (NST) in the third trimester (after 32 weeks of pregnancy).

Urination is an important indicator of a newborn's hydration and kidney function. A newborn should urinate at least six times a day, or once every four hours, by the fifth day of life. The urine should be clear or pale yellow and have no strong odor or blood. A newborn who urinates less than six times a day may be dehydrated, have a urinary tract infection, or have a kidney problem .
Therefore, the nurse should instruct the client to monitor her baby's urination and notify the pediatrician if he urinates less than six times a day. The nurse should also teach the client how to prevent dehydration in her baby, such as:
- Feeding the baby frequently, either breast milk or formula, according to his hunger cues and weight gain
- Offering the baby extra fluids in hot weather or when he is sick
- Avoiding giving the baby water, juice, or cow's milk before six months of age
- Checking the baby's diapers for wetness and changing them promptly
- Checking the baby's mouth for dryness and his fontanelle for sunkenness

The other statements are not correct and should not be made by the nurse:
- b) "Swaddle your baby tightly with his legs extended before laying him down to sleep." This is not correct because swaddling a baby too tightly or with his legs extended can cause problems, such as overheating, hip dysplasia, or restricted breathing. The nurse should teach the client how to swaddle her baby safely and comfortably, such as:
- Using a thin blanket that is breathable and does not cover the baby's head or face
- Wrapping the blanket snugly around the baby's chest and arms, but leaving some room for his hips and legs to move freely
- Placing the baby on his back to sleep on a firm and flat surface with no pillows, blankets, or toys
- Stopping swaddling when the baby shows signs of rolling over or breaking free from the blanket

c) "Place triple antibiotic ointment on your baby's umbilical cord twice per day." This is not correct because placing ointment on the umbilical cord can delay its healing and increase the risk of infection. The nurse should teach the client how to care for her baby's umbilical cord until it falls off naturally, usually within one to two weeks after birth, such as:

- Keeping the cord clean and dry by using a cotton swab dipped in water or alcohol to gently wipe around it
- Folding the diaper below the cord to prevent irritation or wetness

- Dressing the baby in loose-fitting clothes that allow air circulation around the cord
- Avoiding bathing the baby in a tub until the cord falls off and heals
- Watching for any signs of infection, such as redness, swelling, pus, foul odor, or bleeding

d) "Retract the foreskin to clean your baby's penis during each bath." This is not correct because retracting the foreskin of a newborn can cause pain, injury, or infection. The foreskin of a newborn is usually attached to the head of the penis (glans) and does not need to be retracted for cleaning. The nurse should teach the client how to clean her baby's penis during each bath, such as:
- Using warm water and mild soap to gently wash the outside of the penis
- Rinsing well and patting dry with a soft towel
- Leaving the foreskin alone and never forcing it back
- Changing diapers frequently and keeping them clean and dry