Children with transposition of the great arteries: Should they actually be born in Nigeria?

Table 1 Yearly incidence and percentage of transposition of the great arteries amongst the congenital heart disease

Year	Total patients seen	Patients with CHD (n)	Patients with TGA (n)	Prevalence of TGA amongst CHD (%)	Prevalence of TGA per 10000 children
2007	47343	87	1	1.15	0.21
2008	49387	119	8	6.72	1.62
2009	49141	90	2	2.22	0.41
2010	36400	103	14	13.59	3.84
2011	37404	153	6	3.92	1.60
2012	28475	143	4	2.79	1.40
2013	32220	180	6	3.33	1.86
2014	32800	108	7	6.48	2.13
2015	13492	140	3	2.14	2.22
Total	326662	1123	51	4.54	1.56

TGA: Transposition of the great arteries; CHD: Congenital heart disease.

Table 2 Ages at echocardiography and sex distribution of the patients

Age (mo)	Male	Female	χ2	P
0-6	25	11	2.0	0.36
6.1-12	4	2
≥ 12.1	5	4
Total	34	17

χ² = 2.0, P = 0.36.

Table 3 Indication for cardiac evaluation of the subjects

Indication	Frequency	% of all patients
Cyanosis	47	92
ACHD	4	7.8
Breathlessness	10	19.6
CCF	1	1.9
Stroke	1	1.9
Murmur	1	1.9
Failure to thrive	1	1.9
Suspected TGA	1	1.9
Dextro Cardia	1	1.9
Down syndrome	2	3.9

Some patients had more than one indication. ACHD: Acyanotic congenital heart disease; CCF: Congestive cardiac failure.

Table 4 Associated intracardiac connections in subjects

Cardiac anomaly	Frequency	% of all TGA
ASD	19	37.3
AVCD	3	5.9
DORV	10	19.6
HLH	1	1.9
PDA	15	29.4
PFO	2	3.9
PS	6	11.8
TAPVC	1	1.9
TOF	1	1.9
TR	3	5.9
VSD	27	52.9

Most patients had more than one intracardiac connections. TGA: Transposition of the great arteries; ASD: Atrial septal defect; AVCD: Atrioventricular canal defect; DORV: Double outlet right ventricle; HLH: Hypoplastic left heart; PDA: Patent ductus arteriosus; PFO: Patent foramen ovale; TAPVC: Total anomalous pulmonary venous connections; TOF: Tetralogy of fallot; TR: Tricuspid regurgitation; VSD: Ventricular septal defect.