A 35 years old male with long standing disseminated TB presents in a emaciated state with following features: • BP = 85/60 mmHg • Low volume pulse of 100 BPM • Diffuse hyperpigmentation that involves hand creases • Serum Na+ = 120meq/L (N = 136–146 meq/L) • Serum K+ = 6.6 meq/L) Your most immediate response would be: