Final answer:
Bradycardia is not a typical direct complication of extubation. While stridor, hypoxemia, and hypercarbia are common issues that can arise post-extubation, bradycardia is generally not caused by the extubation process itself.
Step-by-step explanation:
The question is asking which among the provided options is not a potential complication of extubation in the field. Upon extubation, which is the removal of an endotracheal tube that aids in breathing, several complications can occur. Stridor, which is a high-pitched wheezing sound caused by disrupted airflow, hypoxemia, which is a lower-than-normal level of oxygen in the blood, and hypercarbia, an elevated level of carbon dioxide in the blood, are common complications associated with extubation. However, bradycardia, which refers to a slower-than-normal heart rate, is not typically a direct complication of extubation. It is possible for bradycardia to occur in a patient for reasons other than extubation, such as underlying cardiovascular issues or as a response to other medical interventions.