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4-2-5-6-1-3: This sequence places descent before engagement and flexion after engagement, which does not follow the typical progression of fetal movements during labor. Engagement usually occurs before descent.

2-5-4-6-3-1: This order incorrectly places flexion before descent and extension after internal rotation, which does not align with the physiological process of vaginal birth. The fetus must descend before extension occurs.

5-2-4-6-1-3: Starting with flexion before engagement is incorrect because engagement of the presenting part into the pelvis occurs prior to the fetus flexing its head. This disrupts the normal sequence of cardinal movements.

surfactant actually reduces alveolar surface tension, allowing alveoli to expand more easily during inhalation and preventing collapse during exhalation, rather than increasing tension.

Surfactant is not primarily for airway lubrication or mucus clearance. Its main role is to lower alveolar surface tension to prevent collapse and facilitate lung compliance.

Surfactant production does not peak at 20 weeks. It begins around 24 weeks, with significant amounts produced after 32–34 weeks, which is why preterm infants are at high risk for respiratory distress syndrome.

Patient A-First stage, Patient B-Second stage, Patient C-Third stage, Patient D-Fourth stage: This sequence incorrectly places Patient A in the first stage despite complete cervical dilation and pushing, and misclassifies Patient B’s early labor as second stage.

Patient A-Second stage, Patient B-Fourth stage, Patient C-First stage, Patient D-Third stage: This arrangement mismatches stages with clinical signs; Patient B is still in early labor, not postpartum, and Patient C has already delivered, indicating the third stage, not first stage.

Patient A-Third stage, Patient B-Second stage, Patient C-Fourth stage, Patient D-First stage (transition phase): Patient A is actively pushing (second stage), and the other patients’ stages do not match their described symptoms or postpartum status.

Lordosis refers to a straightening of the spine to accommodate fetal weight, which reduces flexibility and causes back pain: Lordosis is an increased inward curvature of the lumbar spine, not a straightening. The curvature helps maintain balance rather than reducing flexibility.

Lordosis is caused by compression of spinal nerves from the expanding uterus and is typically a sign of neurologic compromise: Lordosis is a normal musculoskeletal adaptation during pregnancy, not a sign of nerve compression or neurologic compromise.

Lordosis develops due to increased thoracic spine curvature and leads to shoulder pain in late pregnancy: Lordosis involves the lumbar spine, not the thoracic spine, and is associated with lower back pain, not shoulder pain.

Platypelloid pelvis: This pelvic type is characterized by a flattened inlet with a short anteroposterior diameter and a wide transverse diameter. These dimensions often lead to difficulty with fetal engagement and descent, increasing the likelihood of labor dystocia and the need for operative intervention.

Anthropoid pelvis: This pelvis is elongated anteroposteriorly and narrower transversely, predisposing the fetus to enter the pelvis in an occiput posterior position. Although vaginal birth can occur, it may be accompanied by prolonged labor or back pain due to fetal malrotation.

Android pelvis: The android pelvis resembles a male pelvis, with a heart-shaped inlet and narrow dimensions. These features can lead to poor fetal head engagement, deep transverse arrest, and increased need for cesarean or assisted delivery due to ineffective fetal descent.

While supplements can help meet calcium needs, dietary sources are preferred because they provide additional nutrients and are better absorbed. Supplements should only be used when dietary intake is inadequate or prescribed by a healthcare provider.

Many plant-based and fortified foods contain significant amounts of calcium. Educating clients on diverse calcium sources supports better dietary planning and prevents nutritional misconceptions.

Red meat and whole grains are not significant sources of calcium. While they offer other nutrients like protein and iron, relying on them for calcium intake would not meet the recommended dietary requirements during pregnancy.

Striae gravidarum can appear in the second or third trimester, not exclusively in the third. Their severity is strongly influenced by genetic predisposition, hormonal changes, and the degree of skin stretching rather than fetal growth.

Striae gravidarum are caused by autoimmune destruction of dermal tissue, commonly seen in There is no autoimmune mechanism involved in the development of striae. They are purely structural and hormonal changes in the skin rather than immune-mediated conditions.

Striae actually result from decreased dermal elasticity and collagen integrity. Estrogen and glucocorticoids impair collagen synthesis, leading to thinning and tearing of the dermal layer instead of thickening.