Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double-blinded, Randomized Control Trial of Prophylactic Ondansetron in a Post-operative Cardiac Surgery Population for Post-operative Nausea and Vomiting
Brief Summary: To evaluate the effectiveness of a prophylactic dose of ondansetron in decreasing the incidence of post-operative nausea and vomiting in cardiac surgery patients after cessation of post-operative sedation. In patients who have undergone open heart surgery, a single prophylactic dose of ondansetron 4 mg IV given at the time of discontinuing propofol sedation will result in a 50% reduction of the rate of post-operative nausea and vomiting in the first 24 post-operative hours compared to placebo.


Options:
A: Inclusion Criteria:

* Patients with ASA physical status 1 and 2 between 20 and 65 years undergoing laparoscopic gynecological surgery with patient-controlled analgesia for postoperative pain control.

Exclusion Criteria:

* Pregnant women
* Patients who took sedatives, antiemetics, hypnotics, analgesics, steroid, or gabapentin
* Patients with neurological deficits
* Patients with history of drug abuse and allergy of study drugs
B: Inclusion Criteria:

* All patients undergoing breast surgery for carcinoma breast.
* Patients between ages 18 to 60 years.
* ASA I \\ II \\ III
* Patients weight between 40 and 70 kilograms.

Exclusion Criteria:

* Patient refusing consent
* Prophylactic anti emetic drug administration during intraoperative period
* Known case of prolonged QTc interval
* Known case decompensated cardiomyopathy
* Known case of cardiac arrhythmia or bundle branch block
* Case of congestive heart failure with left ventricular ejection fraction \<40%
* Abnormal serum level of potassium, calcium, magnesium
C: Inclusion Criteria:

* Elective (outpatient) and urgent (inpatient) cardiac surgery procedures requiring cardiopulmonary bypass, including:

  * Coronary artery bypass grafting (CABG)
  * Valve surgery (ie. repair and/or replacement)
  * CABG and valve surgery

Exclusion Criteria:

* Undergoing 'off-pump' CABG (not involving the cardiopulmonary bypass machine)
* With a contraindication to the study drug - including but not limited to congenital Long QT Syndrome, allergy to ondansetron, or a history of migraines
* Unable to understand the consent process, either due to language limitations or cognitive limitations if a translator or substitute decision maker is not available
* Receiving heart transplants, ventricular assist devices or on extra-corporeal membrane oxygenation (ECMO)
* Intubated for more than 12 hours post-operatively
* With a known history of PONV
* Sedated with dexmedatomine instead of propofol
D: Inclusion Criteria:

* 18-80 yrs of age
* American Society of Anesthesiologists (ASA) physical status 1-3
* Scheduled for outpatient TEP bilateral inguinal hernia repair

Exclusion Criteria:

* Patients refusal to participate
* inability to give consent
* drug allergies to medications used in study
* pregnancy
* bleeding diathesis
* conversion to an open procedure
* any subject whose anatomy, or surgical procedure, in the opinion of the investigator might preclude the potential successful performance of a TAP block
* any subject whose anatomy, or surgical procedure, in the opinion of the investigator, might preclude the potential successful performance of a TAP block

Answer: C