In cardiogenic shock which inotropic support to start with and which one to tapper first and why?

Depends: Greatly on situation. Talk to ICU or ccu physicians.

Norepi, probably: Norepinephrine or Dopamine would be typical first line choices to treat the hypotension and hypoperfusion of cardiogenic shock. Would guide further additions and titration with swan ganz catheter and arterial line. Titration depends on cardiac function, patient's comorbidities, and arrhythmias from inotrope.