Safety of bronchial arterial embolization with n-butyl cyanoacrylate in a swine model

Table 1 White blood cell, red blood cell, percutaneous oxygen saturation level and rectal temperature following bronchial artery embolization

	NBCA				GSP
	Baseline	Immediately after	1 d after	2 d after	Baseline	Immediately after	1 d after	2 d after
WBC (× 103/μL)	16.5 ± 2.8	14.1 ± 0.45	15.5 ± 2.1	17.5 ± 5.3	16.3 ± 1.1	14.9 ± 0.35	17.0 ± 1.75	16.0 ± 1.6
RBC (× 106/μL)	6.04 ± 0.82	5.98 ± 0.87	6.18 ± 0.10	5.69 ± 0.56	6.28 ± 0.46	6.27 ± 0.52	6.21 ± 0.19	6.30 ± 0.06
SpO2 (%)	97.3 ± 1.25	97.7 ± 0.94	96.7 ± 0.94	97.0 ± 0.82	96.7 ± 0.47	97.3 ± 1.25	98.0 ± 0.00	97.7 ± 0.47
Rectal temperature (°C)	37.7 ± 0.45	37.8 ± 0.62	37.2 ± 0.12	37.8 ± 0.60	38.2 ± 0.41	38.4 ± 0.45	37.8 ± 0.65	37.9 ± 0.63

Values reported are mean ± range. NBCA: N-butyl cyanoacrylate; GSP: Gelatin sponge particles; WBC: White blood cells; RBC: Red blood cells; SpO₂: Percutaneous oxygen saturation.

Table 2 Presence of n-butyl cyanoacryrate on chest computed tomography two days after bronchial artery embolization

Bronchial arteries	NBCA
	Present	Absent
Principal branch	6	0
Lobar branch	13	5
Segmental branch	12	47
Subsegmental branch	3	123

NBCA: N-butyl cyanoacrylate.

Table 3 Damage to bronchial branch arteries on angiography two days after bronchial artery embolization with gelatin sponge particles

	Grade of damage1
Bronchial arteries	Grade I	Grade II	Grade III
Principal branch	1	4	1
Lobar branch	3	5	6
Segmental branch	2	6	9

¹According to the criteria of Maeda et al[17].

Table 4 Distribution of embolic materials in bronchial branch arteries according to arterialdiameter

Diameter of bronchial branch artery (μm)	NBCA-Lp		GSP
	Present	Absent	Present	Absent
1000 <	1			1
951-1000
901-950				2
851-900			1
801-850	1			1
751-800
701-750	2
651-700	2			1
601-650	1
551-600	1		1	3
501-550	3			1
451-500	1			1
401-450	2
351-400	4		1	2
301-350	3
251-300	5			3
201-250	3	3	1	9
151-200	4	4		9
101-150	2	16	2	18
51-100		34		31
50 >		101		116

NBCA-Lp: N-butyl cyanoacrylate-lipiodol; GSP: Gelatin sponge particles.