Final answer:
The next order after resuming chest compressions and a second shock is to administer epinephrine following ACLS guidelines, while ensuring high-quality CPR continues.
Step-by-step explanation:
After immediate resumption of chest compressions and administering a second shock for ventricular fibrillation (VF), the next order should be to administer epinephrine. Furthermore, it is crucial to continue high-quality CPR, maintaining chest compressions at a rate of 100 compressions per minute and ensuring visible chest rise during bag-mask ventilations. Advanced Cardiac Life Support (ACLS) protocols state that epinephrine should be given as soon as an IV or IO (intraosseous) access is available and then every 3 to 5 minutes thereafter.
The next order in this situation would be to administer an antiarrhythmic medication. Since no drugs have been given yet and the second shock did not restore a normal rhythm, the next step would be to try medication to stabilize the heart rhythm.