CFN - Certified Forensic Nurse Forensic Evidence Collection Process Questions and Answers — Questions and Answers
Question 1: A forensic nurse is collecting clothing from a victim of sexual assault. The victim's shirt is damp with suspected biological fluid. Which of the following actions is most appropriate for preserving the evidence?
- Place the shirt in a plastic bag to prevent loss of moisture and seal it.
- Allow the shirt to air-dry completely before packaging it in a paper bag. (Correct answer)
- Use a hairdryer on a low setting to speed up the drying process before packaging.
- Fold the shirt neatly with the stained area on the inside and place it in an evidence box.
Correct answer: Allow the shirt to air-dry completely before packaging it in a paper bag.
Wet or damp evidence, especially clothing with biological fluids, must be air-dried before being packaged. Packaging moist items in plastic can lead to mold, mildew, and bacterial growth, which can degrade or destroy DNA evidence. Using heat to dry the item can also damage the evidence. Each item should be packaged separately in a paper bag to prevent cross-contamination.
Question 2: When documenting a patient's account of an assault, what is the most critical principle for a Certified Forensic Nurse to follow?
- Paraphrase the patient's statements for clarity and conciseness in the medical record.
- Use medical terminology to interpret the patient's description of injuries.
- Record the patient's statements verbatim, using quotation marks. (Correct answer)
- Only document information that is immediately relevant to the physical injuries.
Correct answer: Record the patient's statements verbatim, using quotation marks.
Forensic documentation requires objectivity and accuracy. The nurse should document the patient's statements exactly as they are made, using quotation marks for direct quotes, without interpreting or paraphrasing them. This ensures the patient's own words are preserved, which is crucial for legal proceedings.
Question 3: A patient arrives at the emergency department after a physical assault. To preserve potential trace evidence on the patient's hands, what is the forensic nurse's initial priority before conducting a detailed examination?
- Wash the patient's hands thoroughly to remove any contaminants.
- Take photographs of any visible injuries on the hands.
- Cover the patient's hands with paper bags. (Correct answer)
- Obtain fingernail scrapings immediately.
Correct answer: Cover the patient's hands with paper bags.
To preserve fragile trace evidence such as fibers, hair, or DNA under the fingernails, the patient's hands should be covered with paper bags. This action prevents the loss or contamination of evidence before it can be systematically collected. Washing hands would destroy the evidence, and while photos and scrapings are important, protecting the evidence from loss is the immediate priority.
Question 4: Which of the following is the primary purpose of maintaining a strict chain of custody for forensic evidence?
- To ensure the patient's medical records are kept confidential.
- To guarantee the admissibility of the evidence in court. (Correct answer)
- To facilitate faster laboratory analysis of the collected specimens.
- To track the cost of the evidence collection kit for billing purposes.
Correct answer: To guarantee the admissibility of the evidence in court.
The chain of custody is a legal document that tracks the possession of evidence from the moment of collection until it is presented in court. Its primary purpose is to ensure the integrity of the evidence by demonstrating that it has not been tampered with, altered, or substituted. A broken chain of custody can render evidence inadmissible in legal proceedings.
Question 5: A forensic nurse is obtaining informed consent for an evidentiary examination. Which of the following elements is essential to include in the consent process?
- A guarantee that the collected evidence will lead to a conviction.
- The specific law enforcement agency that will receive the evidence. (Correct answer)
- The names of all laboratory personnel who will analyze the evidence.
- An estimation of the time it will take for the case to go to trial.
Correct answer: The specific law enforcement agency that will receive the evidence.
Informed consent for a forensic exam must include informing the patient about what evidence will be collected, if photographs will be taken, and which agency (e.g., a specific police department) the evidence will be released to. This ensures the patient understands the process and the destination of the collected evidence. Guarantees of legal outcomes, names of lab staff, or trial timelines are not part of the forensic nurse's role or the consent process.
Question 6: When collecting biological samples, such as from a bite mark, what is the recommended technique to avoid contamination?
- Use a single swab for all collection sites to ensure a comprehensive sample.
- Cleanse the area with an antiseptic solution before swabbing.
- Wear the same pair of gloves throughout the entire evidence collection process.
- Change gloves frequently and use separate sterile swabs for each distinct area. (Correct answer)
Correct answer: Change gloves frequently and use separate sterile swabs for each distinct area.
To prevent cross-contamination, forensic nurses must change gloves often and use separate, sterile collection tools (like cotton-tipped swabs) for each piece of evidence or anatomical location. Using the same swab or gloves for multiple sites could mix DNA from different sources, compromising the integrity of the evidence.
CFN - Certified Forensic Nurse Forensic Evidence Collection Process Questions and Answers
A forensic nurse is collecting clothing from a victim of sexual assault.
The victim's shirt is damp with suspected biological fluid.
Which of the following actions is most appropriate for preserving the evidence?