Pаtient Scenаriо: A 58-yeаr-оld client with chrоnic kidney disease (CKD) is admitted with fatigue, nausea, and confusion. The client reports poor appetite and missed dialysis sessions over the past week. The nurse reviews the client’s vital signs and labs: Vital Signs: Respiratory rate: 28/min, shallow breathsHeart rate: 102 bpmBlood pressure: 92/58 mmHg ABG:pH: 7.30PaCO₂: 32 mmHgHCO₃⁻: 16 mEq/L Using the scenario above, what is the most likely cause of this client’s metabolic acidosis?