Severe Uncompensated Metabolic Alkalosis due to Plasma Exchange in a Patient with Pulmonary-Renal Syndrome: A Clinician’s Challenge

Table 1

Laboratory parameters (on admission day and later on after initiation of hemodialysis and plasmapheresis).

Parameters	On admission	Day 1	Day 2	Day 4	Day 5	Day 6	Day 7	Day 9	Day 12
pH	7.31	7.42	7.56	7.61	7.68	7.47	7.51	7.50	7.47
PCO2 (mmHg)	52	39	28	26.4	20.9	25.2	39.3	38	41.2
PO2 (mmHg)	40	129	320	162	129	99	198	216	192
Sodium (mEq/mL)	145	143	143	141	138	138	131	138	138
Potassium (mEq/mL)	4.4	4.3	2.9	3.8	4.4	4.4	3.9	2.9	2.8
Bicarbonate (mEq/mL)	21	26	34	27	28	17	23	29	25
Chloride (mEq/mL)	102	103	101	105	108	108	92	96	93
BUN (mg/dL)	29	49	13	35	17	17	56	24	41
Creatinine (mg/dL)	2.8	8.7	2.7	4.5	2.3	2.3	7.8	4.7	6.3
Hematocrit %	27.4	17.6	24.8	25.8	25	25	24.2	22	22.8
ANCA-MPO		>8				22.8			3.1
Anti-GBM antibody		7.4				2.8			1