Table 1

Characteristics of subjects

										Ultrasonographic measurement (mm)
							Atropine treatment			Before atropine		After atropine
Case	Sex	Age at admission	Hospital stay (days)	Weight at birth (g)	Weight at admission (g)	Weight increase during hospital stay (g/day)	IV (days)	Oral (days)	Total (days)	Muscle thickness	Canal length	Muscle thickness	Canal length
Ultrasonographic measurements were made before and three weeks after atropine administration.
IV, Intravenous atropine administration.
Successful cases
1	F	46	11	2900	4205	21	6	22	28	4	17	3	15
2	M	29	14	3336	3605	25	9	82	91	5	20	3	13
3	M	37	13	3086	4385	27	5	28	33	5	16	3	15
4	M	37	16	3804	4315	16	8	128	136	6	17	4	19
5	F	45	13	3015	4234	17	9	28	37	5	20	3	15
6	M	76	15	3530	5270	4	8	72	80	5	19	3	19
7	M	34	9	3342	3405	44	6	66	72	6	20	3	15
8	M	24	10	2918	3350	9	7	42	49	5	15	4	19
9	M	55	6	3036	3970	66	4	28	32	4	24	2	12
10	M	22	14	3546	3545	6	10	60	70	5	25	5	20
11	M	85	13	3440	5410	11	7	63	70	6	19	3	20
12	M	40	9	2592	3465	16	6	44	50	5	18	3	13
13	F	29	9	3070	3505	13	4	41	45	4	22	3	16
14	M	36	14	2600	3200	24	8	41	49	4	17	2	15
15	M	54	10	4430	5010	10	7	44	51	6	18	4	13
16	M	69	11	3140	5400	28	7	40	47	5	19	3	16
17	M	62	20	2480	3458	24	10	50	60	5	18	4	15
Unsuccessful cases
18	M	23	28	3190	3325	5	18	-	18	4	15	-	-
19	M	74	19	3154	3765	7	9	-	9	7	20	-	-