2410
The ventricular arrhythmias responded to intravenous administration of lidocaine and to direct current electric shock ; ventricular pacing was required in some instances and intravenous administration of propranolol combined with ventricular pacing in one .
 Disease: ventricular arrhythmias; Chemical: lidocaine; Chemical: propranolol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: ventricular arrhythmias; Chemical: lidocaine; Chemical: propranolol