Cardiac: post transplant, CHD, heart defects, heart failure, lung transplant, high risk arrhythmia, post cardiac cath ICU and stepdown assigned together some adult patients (chronic) (not for TN) High level ICU care and complex discharges. Zack Group has been active in the medical staffing sector for over 25 years, providing a wide range of services to top-tier healthcare facilities, including PRN/Per Diem, contract and permanent placement.