Systemic right ventricle complications in levo-transposition of the great arteries: A case report and review of literature

Table 2 Cardiopulmonary exercise testing trend over time

Date of CPX	Peak HR (bpm)	Duration (min)	Peak VO2 (ml/kig/min)	VO2 at anerobic threshold (ml/kig/min)	Peak VO2 (% of age predicted)	Peak RER	Actual METS achieved	VE-VO2 slope	Peak double product	O2 pulse rest	O2 pulse peak
June 16, 2016	85 (46% predicted max)	12.0	18.2	13.5	47	1.28	5.2	28.0	11900	4	16
February 16, 2017	145 (78% predicted max)	13.5	22.4	16.4	59	1.23	6.4	25.6	22040	4	12
September 6, 2018	173 (94% predicted max)	10.5	20.1	-	58	1.20	5.7	28.8	25258	3	11
June 13, 2022	173 (96% predicted max)	9.5	19.5	-	56	1.17	5.6	22.8	21106	3	11

CPX: Cardiopulmonary exercise testing; HR: Heart rate; METS: Metabolic equivalent of task; RER: Respiratory exchange ratio; VE: Ventilatory efficiency.