Table 2. Procedural characteristics and TEE follow-up.

	Octogenarians, n = 261	Non-octogenarians, n = 483	P-value
Data provided as n (%) or mean ± SD. ASA: acetylsalicylic acid; LAAC: left atrial appendage closure; TEE: transesophageal echocardiography.
Anesthesia
Conscious sedation	248 (95.0%)	467 (96.7%)	0.89
General	8 (3.1%)	18 (3.7%)	0.67
TEE guidance	163 (62.5%)	244 (50.5%)	0.001
Amplatzer occluder	188 (72.0%)	397 (82.2%)	0.0012
Watchman occluder	73 (28.0%)	86 (17.8%)	0.0012
Fluoroscopy time, min	14.2 ± 0.1	13.1 ± 8.8	0.59
Total contrast volume, mL	115.5 ± 5.1	144.2 ± 4.2	< 0.0001
Device success	251 (96.2%)	472 (97.7%)	0.34
Major periprocedural complication	9 (3.4%)	23 (4.8%)	0.40
Death	1 (0.4%)	1 (0.2%)	0.66
Stroke	0 (0.0%)	2 (0.4%)	0.55
Cardiac tamponade	5 (1.9%)	14 (2.9%)	0.42
Major bleeding	6 (2.3%)	17 (3.5%)	0.36
Major access vessel complication	0 (0.0%)	1 (0.2%)	1.0
Need for bailout surgery	3 (1.2%)	4 (0.8%)	0.67
Device embolization	2 (0.8%)	4 (0.8%)	0.47
Severe kidney injury	2 (0.8%)	9 (1.9%)	0.24
Need for cardio-pulmonary resuscitation	5 (1.9%)	7 (1.4%)	0.63
Anti-thrombotic medical therapy post LAAC
Any oral anticoagulation	7 (2.7%)	11 (2.3%)	0.73
Vitamin K antagonists	2 (0.8%)	9 (1.9%)	0.24
Non-vitamin K antagonists	5 (1.9%)	2 (0.4%)	0.04
ASA	242 (92.7%)	454 (94.0%)	0.50
Platelet inhibitors other than ASA	245 (93.9%)	459 (95.0%)	0.50
TEE follow-up
TEE performed	153 (58.6%)	342 (70.8%)	0.001
Thrombus on device	6 (3.1%)	12 (3.1%)	0.98
Peri-device leak ≥ 5 mm	3 (2.0%)	5 (1.5%)	0.85