Rare coexistence of aldosterone resistance and adrenal insufficiency in asymptomatic infant with persistent hyperkalaemia: A case report

Table 1 Serial blood investigations of this patient

Serum/plasma	Day 1	Day 3		1 month follow-up	3 months follow-up	6 months follow-up	12 months follow-up	Reference range
Sodium (mmol/L)	138	139	Patient on oral hydrocortisone, fludrocortisone and kalimate	133	135	138	136	135-145
Potassium (mmol/L)	6.9	6.5		5.9	4.8	5.1	4.9	3.5-5.5
Urea (mmol/L)	3.3	3.6		5.3	5.0	5.2	4.9	2.7-8.0
Creatinine (µmol/L)	40	28		39	35	37	38	44-80
Chloride (mmol/L)	109	110		110	105	102	101	98-107
Calcium (mmol/L)		2.53		2.29	2.30	2.31	2.30	2.25-2.75
Phosphate (mmol/L)		2.10		1.07	1.17	1.20	1.23	1.15-2.25
Random cortisol (nmol/L)		63.4		221	350	445	515	130-500
Aldosterone (pmol/L)		1825		1050	802	750	735	70-540
Plasma Renin Activity (ng/mL/hour)		< 0.02		< 0.02	< 0.02	< 0.02	< 0.02	0.5-3.3
Venous pH		7.4		7.32	-	-	-	7.35-7.45
HCO3 (mmol/L)		19		23	-	-	-	22-28