Final answer:
The question seems to mix procedural content with medical information, making it unclear. A subsequent visit to the NOK would depend on the specific situation and relevant policies. The medical terms mentioned relate to symptoms of gastrointestinal illnesses.
Step-by-step explanation:
It appears there's some confusion in the question presented. The reference to notification and subsequent visit to the NOK (next of kin) suggests a procedural context, possibly related to military, law enforcement, or emergency services protocols. However, the additional information provided about nausea, diarrhea, vomiting lasting 24-48 hours; possible dehydration and changes in blood pressure and heart rate is more medical in nature, typically associated with gastrointestinal illnesses or food poisoning.
Therefore, without a proper context, it is difficult to advise when a subsequent visit should be made to the NOK. If the context is medical, and the NOK has been informed of a patient's condition, a subsequent visit would be determined by the medical status of the patient and hospital policies, rather than a set timeline. In a non-medical context, like next of kin notification following a service member's death, timing would be dictated by respective department policies and guidelines.