Pulse oximetry as a screening test for congenital heart disease in newborns

Neonatal characteristics	N	Mean ± SD	Range
Maternal Age (years)	1,082	23.54 ± 2.80	19–32
Gestational Age (weeks)	1,082	39.41 ± 1.33	37–41
Hours of Life	1,082	8.30 ± 2.85	4–22
Birth Weight (Kg)	1,082	2.72 ± 0.124	2.5–3.2
Heart Rate (beats per minute)	1082	151 ± 13	120–168
Respiratory Rate (rate/ min)	1,082	43.5 ± 5	38–58
SpO₂ (in %) First Reading (R₁)	1,062	97 ± 1	95–100
	18	93 ± 1	92–94
	2	86 ± 1	85–87
SpO₂ (in %) Second Reading (R₂)	15	96 ± 1	96–100
SpO₂ (in %) Second Reading (R₂)	3	93 ± 1	92–94
SpO₂ (in %) Third Reading (R₃)	15	97 ± 1	96–100
SpO₂ (in %) Third Reading (R₃)	3	93 ± 1	92–94

	Groups	Frequency	Percentage
Birth Weight	2.5 to 3 Kgs	1,021	94.4
Birth Weight	3.1 to 4 Kgs	61	5.6
Sex	Female	513	47.4
Sex	Male	569	52.6
Heart Rate (beats / min)	120 to 140	183	16.9
	141 to 160	733	67.7
	161 to 180	166	15.3
Respiratory Rate (per minute)	38 to 47	821	75.9
Respiratory Rate (per minute)	48 to 58	261	24.1
Hours of Life at Pulse oximetry Evaluation	2 to 6 hours	324	29.9
	6 to 12 hours	693	64.0
	12 to 24 hours	65	6.0
Total		1,082	100.0

Maternal characteristics	Group	Frequency	Percentage
Maternal Age (years)	≤ 20	108	10.0
	21 to 25	597	55.2
	26 to 30	342	31.6
	> 30	35	3.2
Gestational Age (weeks)	37	97	9
	38	344	31.7
	39	348	29.4
	40	217	20.1
	41	106	9.8
Registration Status	Non-registered	425	39.3
Registration Status	Registered	657	60.7
H/O Diabetes	No	1,079	99.7
H/O Diabetes	Yes	3	0.3
Mode of Delivery	Normal	842	77.8
Mode of Delivery	LSCS	240	22.2
Infections during pregnancy	No	1,045	96.6
	URTI	19	1.8
	Malaria	8	0.7
	Torch	6	0.6
	Hepatitis	4	0.4
Total		1,082	100.0

SpO₂	Groups	Frequency	Percentage
1^st Reading (R₁)	≥ 95%	1,062	98.1
	90%–94%	18	1.7
	< 90%	2	0.2
	Total	1,082	100.0
1^st Repeat (R₂)	≥ 95%	15	83.3
	90%–94%	3	16.7
	Total	18	100.0
2^nd Repeat (R₃)	≥ 95%	15	83.3
	90%–94%	3	16.7
	Total	18	100.0

Sr. No	SpO₂ (%)	Subsequent SpO₂ (%)	Neonatal Presentation	Suspected By	2D ECHO Diagnosis
1	87	90	Grade 3, Systolic murmur	POx and Clinical Examination	TGA + VSD
2	85	87	Grade 4, Ejection systolic murmur at left upper parasternal region	POx and Clinical Examination	TOF
3	92	92	Normal	Pox	DORV
4	92	92	Normal	Pox	ASD + PH
5	95	96	Bounding pulse, Grade 4, continuous murmur, left infra-clavicular region	Clinical Examination	PDA
6	94	94	Asymptomatic	POx	Normal
7	100	–	Grade 2 systolic murmur	Clinical Examination	Normal
8	98	–	Grade 2 systolic murmur	Clinical Examination	Normal
9	97	–	Grade 2 systolic murmur	Clinical Examination	Normal
10	100	–	Grade 2 systolic murmur	Clinical Examination	Normal

Calendario de la edición:: Volume Open
Temas de la revista:: Medicine, Clinical Medicine, Pediatrics and Juvenile Medicine, Paediatric Haematology and Oncology, Public Health