A patient sustains a third-degree laceration and repair with the birth of her son.
Which of the following statements by the nurse would best explain this condition?
"After the baby was born, your doctor stitched up a tear that went through the muscle of your perineum.”.
"After the baby was born, your doctor stitched up a tear in your perineum that extended to the muscle around your rectum.”.
"You needed stitches because you had a tear that extended from your vagina directly through the tissue of your rectum.”.
"During birth, your uterus developed a tear.”.
The Correct Answer is C
Choice A rationale
A first-degree laceration involves only the perineal skin and vaginal mucous membrane, while a second-degree laceration extends into the perineal body muscles. This explanation describes a second-degree tear, which goes beyond the skin but does not involve the rectal sphincter. A third-degree tear involves the external anal sphincter muscle and is a more extensive injury than described.
Choice B rationale
A fourth-degree laceration involves the rectal mucosa, extending through the external anal sphincter. The description of a tear that extends to the muscle around the rectum, but not necessarily through the mucosa, is closer to a third-degree tear. However, a third-degree tear specifically involves the anal sphincter muscle itself, which is what this answer choice is attempting to describe.
Choice C rationale
A third-degree laceration is defined as a tear that extends through the perineal skin, vaginal mucosa, and perineal muscles, and involves the external anal sphincter. This description accurately explains the anatomical location and depth of a third-degree tear, which is a significant injury requiring careful surgical repair. The rectum is distinct from the anal sphincter.
Choice D rationale
Uterine rupture is a rare but serious obstetrical emergency where the uterine wall tears during pregnancy or labor, often at the site of a previous cesarean scar. It is a life-threatening event for both mother and fetus and is not a laceration sustained during vaginal birth. Lacerations occur in the birth canal, not the uterus, and result from the stretching of tissues as the baby is born.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","D"]
Explanation
Choice A rationale
Uterine contractions are governed by complex hormonal and mechanical pathways involving oxytocin and prostaglandins. Walking and position changes primarily influence fetal positioning and maternal comfort, not the frequency or duration of contractions. In fact, these activities can sometimes strengthen contractions by utilizing gravity to increase pressure on the cervix.
Choice B rationale
The primary goal of walking and frequent position changes is to reduce pain and increase comfort. By changing positions, the mother can alleviate pressure on specific areas, optimize blood flow, and distract herself from the pain, which scientifically reduces the perception of pain and increases the body's natural endorphin release.
Choice C rationale
Frequent changes in position and ambulation during labor can increase comfort by reducing pressure on the sacrum and perineum, improving blood flow, and allowing the mother to find a more tolerable position. This scientifically reduces pain perception and enhances the mother's coping mechanisms, making the labor process more manageable.
Choice D rationale
Walking and position changes utilize gravity to help the fetus descend into the pelvis and rotate into an optimal position for birth. This can improve the fit of the fetal head in the maternal pelvis, promoting efficient labor progression and helping the fetus navigate the curves of the birth canal more effectively.
Correct Answer is C
Explanation
Choice A rationale
A station of -3 would indicate that the presenting part is 3 cm above the ischial spines. The ischial spines are the landmark for zero station. The picture shows the darkened line below the ischial spines, which corresponds to a positive number.
Choice B rationale
A station of -2 would indicate that the presenting part is 2 cm above the ischial spines. The ischial spines are the landmark for zero station. The picture shows the darkened line below the ischial spines, which corresponds to a positive number.
Choice C rationale
The ischial spines are the anatomical landmark for a fetal station of zero. The picture shows a darkened line that is positioned 2 cm below this landmark. Therefore, the fetal station is +2. A positive number indicates the fetus has descended past the ischial spines.
Choice D rationale
A station of +3 would indicate that the presenting part is 3 cm below the ischial spines. The picture shows the darkened line at the +2 mark, not the +3 mark. A positive number indicates the presenting part has descended past the ischial spines.
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