I really did not use dopamine to resuscitate the patient, according to the information to try to answer it:
First of all, the questioner did not say the patient's weight, and the dosage of dopamine should be based on the patient's weight. Let's say 60kg.
Secondly, the questioner didn't state the drip rate. Even though the concentration is high, a slow drip rate will not cause an overdose. Let's say 20 drops per minute, or 1 ml/min.
Finally, 500 ml of fluid carries 200 mg of dopamine, and each ml of fluid contains 400 mcg of dopamine. The calculated input rate is: 6.6 micrograms/(kg*min), which is a medium dose, and exerts the effect of excitation of myocardial β1 receptors, increasing cardiac output and contractility, dilating coronary arteries, and increasing blood pressure.
In terms of dosage usage of dopamine, I think it is still in line with the norms of resuscitation. Of course, without restoring sufficient blood volume, dopamine can not play a significant role. But whether it will have a negative effect, I have not found relevant information for the time being.
In summary, I think the hospital side of the use of dopamine in the process of resuscitation there are irregularities, but is not the direct and main cause of the patient's death.