Multicenter Assessment of Radiation Exposure during Pediatric Cardiac Catheterizations Using a Novel Imaging System

Table 4

Study cohort median radiation exposure parameters and interquartile range (IQR) stratified by weight for diagnostic procedures, interventions, and RHC with biopsy.

	Weight (kg)	N	Air Kerma (mGy) from both planes		DAP (μGy m^2) from both planes		DAP/kg (μGy m^2/kg) from both planes		Fluoroscopy time (min) from both planes		Fraction Air Kerma from fluoroscopy
			Median	IQR	Median	IQR	Median	IQR	Median	IQR	Median	IQR
Diagnostic	0–5	42	22	12–45	93	55–174	25	13–43	21	9–31	0.41	0.24–0.50
	5–12.5	119	25	14–53	137	76–307	22	11–47	18	12–26	0.37	0.24–0.53
	12.5–25	94	32	19–67	266	151–612	16	9–37	14	8–21	0.33	0.21–0.51
	25–45	22	75	37–129	682	450–1173	21	13–37	12	6–28	0.48	0.19–0.70
	45–65	17	110	69–227	1326	721–3017	22	13–57	12	8–16	0.34	0.17–0.48
	>65	18	133	28–382	1565	432–4540	19	6–45	7	3–19	0.43	0.24–0.87
Intervention	0–5	123	32	17–60	120	53–198	33	16–61	21	12–40	0.48	0.32–0.69
	5–12.5	208	35	18–75	174	90–496	24	12–63	22	12–39	0.42	0.26–0.57
	12.5–25	130	42	19–82	278	131–678	18	8–37	19	11–30	0.47	0.33–0.64
	25–45	70	100	46–386	1081	469–2535	34	15–77	20	10–30	0.46	0.27–0.72
	45–65	41	199	104–659	2689	1244–7353	53	21–151	20	11–32	0.53	0.35–0.85
	>65	31	206	71–968	3522	843–6978	46	9–90	15	9–21	0.49	0.34–0.67
RHC biopsy	5–12.5	30	6	1–25	38	5–158	4.0	1–13	7	4–14	0.95	0.30–1.00
	12.5–25	73	23	1–60	157	12–373	9	1–21	9	5–14	0.51	0.28–1.00
	25–45	34	8	1–92	88	14–751	2	0–27	7	4–10	0.94	0.32–1.00
	45–65	46	8	2–136	91	37–1577	2	1–28	6	4–9	1.00	0.37–1.00
	>65	31	12	3–327	177	39–530	3	1–58	6	3–14	1.00	0.57–1.00