Please select the eligibility criteria that correspond to the clinical trial below.
Title: N/A
Brief Summary: Cesarean section is one of the most frequently performed major operations worldwide. It accounts for between 1% and 70% of deliveries depending on the facilities or country assessed. In Egypt, the cesarean section rate is 22%, with higher rates seen in private hospitals. In 2015 ,incidence of cesarean section rate in Woman Health Hospital in Assiut university is 51.3% of all deliveries.

Different Operational techniques For cesarean section have been defined aimed at reducing surgical time, making the surgery easier and more efficient, lowering costs,decreasing the risk of adverse effects and postoperative morbidity, as well as length of hospital stay.

Also, Intraoperative blood loss is one of important complications during cesarean section. A systematic review included twenty one studies, in 2011, revealed that increase incidence of intraoperative blood loss and blood transfusion with increase number of cesarean deliveries.also anemia in the pregnancy increase maternal morbidities included intraoperative blood loss. In Egypt, prevalence of Iron deficiency anemia among pregnant women about 51% of pregnant women.

After baby born by cesarean section and the placenta has been extracted, uterine incision is sutured either by temporary removal of the uterus from the abdominal cavity (exteriorization of the uterus) to facilitate uterine incision repair or it is repaired within the abdominal cavity (in situ repair). There had been few randomized controlled trials comparing intraoperative and postoperative morbidity following exteriorization of the uterus with non-exteriorization. The conclusions drawn from these trials have been conflicting.


Options:
A: Inclusion Criteria:

Subjects must satisfy all of the following criteria to be enrolled into the study:

* American Society of Anesthesiology (ASA) physical status less than 3 Able to read and understand the information sheet and to sign and date the consent form
* Scheduled for elective C-section planned with spinal anaesthesia
* Age\>18

Exclusion Criteria:

Potential subjects who meet any of the following criteria will be excluded from participating in the study:

* Complicated pregnancy defined as having preeclampsia or placenta accreta, increta and percreta.
* Drug addiction.
* Contraindication to spinal anaesthesia (history of clotting disorders, septicemia, local infection at the injection site, spinal malformation, elevated intracranial pressure)
* Contraindication to TAP block (skin infection, abdominal wall muscle defect such as hernia and previous abdominal wall mesh).
* BMI\>40 kg/m2
* Weight less than 50 kg the day of the C-section.
* Height less than 150 cm or more than 175 cm.
* Allergy/contraindication to any medication used in the study.
* Previous median abdominal incision. Necessity to perform the C-section urgently before the scheduled date (with less than 24h preparation time).
B: Inclusion Criteria:

* English speaking ASA I-II non-laboring women with single gestations ≥36 weeks
* Scheduled or unscheduled cesarean delivery under spinal anesthesia
* Height: 5 feet-5 feet 11 in.

Exclusion Criteria:

* Laboring women needing an emergency cesarean delivery

  * Subjects less than 18 years of age
  * Receipt of a drug with antiemetic properties in the 24 hours prior to cesarean section
  * Allergy to ondansetron, or metoclopramide
  * Severe hypertensive disease of pregnancy defined as systolic blood pressure (SBP)\>160mmHg, diastolic blood pressure (DBP)\>110mmHg requiring antihypertensive treatment or associated with significant proteinuria.
  * Severe Cardiac disease in pregnancy with marked functional limitations
  * Diabetes type I
  * Patients on Monoamine Oxidase Inhibitors or Tricyclic Antidepressants
  * Morbid obesity (body mass index (BMI)\>45)
  * Inclusion in another anesthetic study involving drug administration
C: Inclusion Criteria:

* Pregnant women in 28 weeks
* Women who will undergo repeated lower segment cesarean section

Exclusion Criteria:

* First cesarean section
* Placenta previa.
* Rupture uterus.
* Classical caesarean section.(upper segment cesarean section)
* Sever Preeclampsia.
* Chorioamnionitis.
* prolonged or obstructed labour.
* Fibroid.
* Polyhydramnios.
* Multiple pregnancy.
D: Inclusion Criteria:

* English speaking
* ASA Physical Status I-II
* Non-laboring women
* Single gestations ≥ 36 weeks
* Obese women (Body Mass Index 35 - 55 kg/m2)
* Non-emergent CD under spinal anesthesia

Exclusion Criteria:

* Height \< 5'0"
* Antiemetic drug use in the 24 hours prior to CD
* Allergy to phenylephrine, or any other standardized medication
* Hypertensive disease of pregnancy (i.e. mild \& severe preeclampsia)
* Chronic hypertension receiving antihypertensive treatment
* Severe Cardiac disease in pregnancy with marked functional limitations
* Patients on Monoamine Oxidase Inhibitors or Tricyclic Antidepressants
* Subject enrollment in another study involving a study medication within 30 days of CD
* Any other physical or psychiatric condition which may impair their ability to cooperate with study data collection

Answer: C