NBSTSA CST Prep Online

Alcohol-based skin antiseptics are flammable. Ensuring the prep has fully dried and that solution has not pooled (especially in skin folds or under the patient) is a key CST safety responsibility during skin prep and draping to reduce the risk of a surgical fire when electrosurgery, lasers, or other ignition sources are used. Adjusting room temperature is not the primary CST safety task in this moment. Verifying consent signatures is typically handled through preoperative verification processes led by nursing and the provider team. Administering prophylactic antibiotics is generally performed and timed by anesthesia and/or nursing according to facility protocol.

Specimens submitted for culture must be transported in a way that preserves viability and avoids contamination. Using a sterile, leak-proof container, adding the correct transport medium when required by policy, and sending the specimen promptly best supports organism survival and accurate results. Formalin chemically fixes tissue and would prevent organisms from remaining viable for culture. Holding a specimen on the field or allowing it to dry can reduce viability. Using a nonsterile or unlabeled container risks contamination and identification errors, which can invalidate results and compromise patient safety.

An indirect inguinal hernia enters the inguinal canal through the deep inguinal ring, which lies lateral to the inferior epigastric vessels. It may then traverse the canal toward the superficial inguinal ring and, in males, may extend into the scrotum. The choice mentioning the superficial inguinal ring is the canal exit, not the entry point. The choice mentioning the femoral canal describes a femoral hernia pathway below the inguinal ligament. The choice mentioning Hesselbach triangle describes the typical location of a direct inguinal hernia, which protrudes medial to the inferior epigastric vessels.