Effect of Preoperative Atrial Fibrillation on Postoperative Outcome following Cardiac Surgery

Table 4

Subgroup analysis of the type of surgery and magnitude of adverse influence of atrial fibrillation on each outcome variable (𝑛=3777).

		CABG			CABG + valve			Isolated valve
	OR	95% C.I	𝑃-value	OR	95% C.I	𝑃-value	OR	95% C.I	𝑃-value
Death	2.0	0.98–4.2	0.056	2.5	1.0–5.9	0.045	1.5	0.7–3.5	0.319
Low cardiac	0.8	0.5–1.1	0.206	1.9	1.1–3.2	0.021	1.99	1.4–2.9	<0.001
Reoperation	1.3	0.6–2.7	0.503	1.1	0.5–2.2	0.834	0.7	0.3–1.4	0.299
Ventilation	0.97	0.5–1.9	0.926	1.6	0.9–2.9	0.135	1.4	0.8–2.4	0.284
Pulmonary	1.2	0.8–1.8	0.425	1.2	0.7–2.0	0.433	0.7	0.4–1.2	0.190
Neurological	0.7	0.3–1.4	0.337	0.9	0.4–1.9	0.815	0.97	0.5–1.8	0.927
Renal	0.9	0.5–1.8	0.806	2.3	1.2–4.2	0.011	0.99	0.5–1.8	0.973
Infective	1.1	0.6–1.9	0.769	2.7	1.5–4.8	0.001	1.7	0.9–3.4	0.132
GI^*	2.1	0.7–6.4	0.177	2.7	0.9–7.8	0.075	0.9	0.1–5.3	0.889
ICU^**	1.4	0.6–3.0	0.428	2.1	0.9–4.9	0.099	1.6	0.7–3.7	0.286
Blood	0.8	0.5–1.1	0.157	0.8	0.5–1.3	0.344	0.8	0.6–1.2	0.402

CABG: coronary artery bypass graft.
^*GI: gastrointestinal complications.
^**ICU: intensive care unit readmission.