Whats the best way to treat severe hyponatremia due to Chlorthalidone?

known DM with gluteal abscess post cardiac arrest abg of a patient; interpret

A 60 yr old male who is a chronic smoker presented with Breathlessness, pedal edema , poor oral intake and personality changes since 5 days....vitals at presentation were BP-160/100 PR-106/min, spO2-85%, Rbs- 88....No h/o any comorbidity..comment on the approach to this patient...

45F with C/o breathlessness, productive cough, occasional fever, decreased appetite since 2-3months. Admitted to ED with severe shortness of breath since today morning. Chest b/l scattered crackles+ rhonchi+, Bp 90/60, Pr 120, Spo2 85% RA, 96% with O2. Comment on ECG.. Thankyou..

40 year old male, history of Right Tibio-fibular fracture on 28th June, followed by altered sensorium the next day. No head trauma. No history of fever, breathlessness or any cutaneous manifestations. On examination, GCS 3/15. Pupils bilaterally normal. Saturation 95% Room Air, BP 100/70. Systemic examination essentially normal. Diagnosis?

80 yr f thin built fever cough dyspnoea at rest.came to er rr40.bp140mmhg.spo2 room air 70only.admiteed rx with o2 bipap.nebu inj piptaz 4.5gm inj moxiflox.n tab clarithral.pt spo2 now 96on o2 4 litmin.rrstill 30 hr 140min.bedside echo not avialble.rx as cap.?chf.tlc 11200.sr creat2.sr na126.ddx n rx .