4055
Sixteen patients were studied within 24 hours of resuscitation and all showed depressed right ventricular ejection ( RVEF ) and / or an increased end - diastolic volume ( RVEDVI ) .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None