Explanation
(A) Synthetic cast materials harden in 3-15 minutes. Weight bearing is permitted in 15-30 minutes. Drying time for plaster of Paris is about 24-72 hours. (B, C) Plaster of Paris cast materials are heavier than synthetic materials and require a drying time of 24-72 hours. Synthetic materials dry within 30 minutes. (D) Plaster of Paris cast materials are heavier thansynthetic materials and require a longer period to set and dry. Even though setting time (hardening) is only 3-15 minutes, the drying time for plaster of Paris is 24-72 hours. This depends on the size and thickness of the cast, exposure to air, and humidity in the air.

Explanation
(A) Abruptio placentae, the complete or partial separation of the placenta from the uterine wall, can be caused by external trauma. When hemorrhage is concealed, one sign is a rapid increase in uterine size with rigidity.
(B) Ectopic pregnancy occurs when the embryo implants itself outside the uterine cavity. (C) Massive uterine rupture occurs during labor when the uterine contents are extruded through the uterine wall. It is usually due to weakness from a pre-existing uterine scar and trauma from instruments or an obstetrical intervention. (D) Placenta previa is the condition in which the placenta is implanted in the lower uterine segment and either completely or partially covers the cervical os.

(A) Dystocia is difficult labor. The delivery has occurred. Kraurosis is atrophy and dryness of skin and any mucous membrane (vulva). (B) Chadwick's sign is a bluish color of vaginal mucosa suggestive of pregnancy. (C) Fatigue is a common symptom in the postpartal period. Hemorrhoids may occur with pregnancy. (D) Hemorrhage and infection are potential complications of vaginal delivery. Hemorrhage may result from retained placental fragments or soft uterus. Infection may occur from the introduction of organisms into the uterus during the delivery.

Explanation/Reference:
Explanation:
(A) Afterbirth pains are a common complaint in the postpartum client, but they are located in the uterus. (B) Constipation may cause rectal pressure but is not usually associated with "severe pain." (C) Cystitis may cause pain, but the location is different. (D) Hematomas are frequently associated with severe pain and pressure. Further assessments are indicated for this client.

Explanation
(A) Urinary output is a reliable indicator of renal perfusion, which in turn indicates that fluid resuscitation is adequate. IV fluids are adjusted based on the urinary output of the child during fluid resuscitation. (B) Edema is an indication of increased capillary permeability following a burn injury. (C) Hypertension is an indicator of fluid volume excess. (D) Fontanelles close by 18 months of age.