Clinical evaluation of a novel occluder device (Occlutech<Superscript>®</Superscript>) for percutaneous transcatheter closure of patent foramen ovale (PFO)

Background

We investigated the safety, feasibility and usefulness for closure of PFO with the new nitinol meshwire PFO-occluder device (Occlutech Figulla^®-single layer occluder) with an unique braiding technology which allows a 50% reduction of meshwork material on the left atrial side in combination with a greater flexibility as compared to the Amplatzer^® occluder device.

Methods

The retention discs of the new PFO Occlutech Figulla^® single layer device (23/25 mm) are connected by a 3 mm waist in the centre with only one right atrial side hub. The left atrial disc is a single flat layer covered by an ultrathin polyethylene terephthalate (PET) patch. We investigated the safety, feasibility and usefulness for closure of PFO in a multicenter clinical trial. Indications for closure included cryptogenic stroke with evidence of a patent foramen ovale in transesophageal echocardiography (PFO max. diameter 13 mm according to sizing balloon). The device was implanted in 36 patients (mean age 57, 18–80 years) by means of fluoroscopy and transesophageal echocardiography (TEE) using a 9 French delivery sheath and employing a femoral vein approach. Both acetylsalicylacid 100 mg/d (6 months) and clopidogrel 75 mg/d (3 months) were administered post interventional. A transthoracal (TTE) and transesophageal echocardiography follow-up examination was performed after 1, 2 and 6 months (TTE day 30 and 180; TEE day 60).

Results

The device was successfully implanted in 36 pts. In one patient PFO implantations was attempted but not crossed with a guide wire. Perioperativly there were no major in-hospital-adverse events or complications thromboembolism, occluder dislodgement, infection or myocardial infarction. One patient had transient atrial fibrillation 2 h after implantation, which terminated medically after 12 h. TEE studies in the remaining 35 pts (one pt was unwilling to further participate) showed a residual shunt in 8.6% (3/35) after 60 days and a left-to-right shunt in 2.6% (1/35) of pts. After 180 days one pt with severe arteriosclerotic heart disease and A.carotic stenosis revealed a stroke without evidence of cardioembolic origin or devices thrombosis.

Conclusions

The novel Occlutech Figulla^® PFO N single layer device appears to be safe, feasible and useful for PFO closure despite a 50% reduction of the meshwire, no distal hub and an improved flexibility of the left atrial disc.

     

Uncommon delayed and late complications after percutaneous left atrial appendage closure with Amplatzer® Cardiac Plug

Aims

Percutaneous left atrial appendage closure with Amplatzer^® Cardiac Plug (St. Jude Medical Inc.) for the prevention of stroke in patients with atrial fibrillation is rapidly propagating. We sought to provide additional safety data.

Methods and results

We have screened our database of patients having been treated with Amplatzer^® Cardiac Plug and found 3 cases with uncommon complications that have not been reported previously. One patient experienced an embolisation of the occluder about 12 months after implantation that potentially resulted from mismatch of occluder size and landing zone. Another patient developed cardiac tamponade 9 days after implantation. This case of delayed effusion was probably not a result of interventional trauma, but might have been provoked by scratching of the inner pericardial membrane. A third patient developed a large thrombus in the left atrium which was considered to be caused by injury of the endothelial wall during implantation. The first two cases could be treated by a percutaneous procedure, the last case by cardiac surgery without any sequelae.

Conclusions

Complications after left atrial appendage closure not related to a device-related thrombus can occur later after implantation. With appropriate percutaneous or surgical management these complications can be handled without sequelae.     

First experience with the 2005 modified Gore Helex ASD occluder system

We report about our initial experience for the in 2005 modified Helex (Gore) device for closure of atrial septal defects (ASD) and persistent foramen ovale (PFO). Major changes were made at the delivery system for simplifying the Helex implantation procedure. We treated 11 patients, 8 children and 3 adults, with ages between 3 and 62 years. In 10 patients the diagnosis was a relevant ASD with volume overload of the right heart (Left to right shunts between 30 and 50%). One adult (age 58 years) have had a small left to right shunt with a PFO-like defect and the history of 2 neurologic embolic events. In 3 patients we found 2 defects. In all patients a Helex occluder was implanted successfully. The mean fluoroscopy time was 8,4 minutes. The immediate occlusion rate after 24 hours was 91%. In all cases there was a very good adaptation of the device to the anatomical structures. In this small series, the Helex occluder appears to offer a reliable system of occlusion for small and moderate ASDs and for PFO with minimal risk of major complications.     

超声在房间隔膨出瘤并继发孔型房间隔缺损封堵术中的应用

目的 探讨超声心动图在房间隔膨出瘤（ASA）并发继发孔型房间隔缺损（ASD）封堵治疗中的应用价值。方法 应用经食管超声心动图（TEE）或经胸超声心动图（TTE）诊断ASA并发ASD17例，所有患者均在X线和术中TTE监测下行封堵治疗，术后TTE跟踪复查评价其疗效。结果 17例患者封堵器置人均获成功，共放置24个封堵器。封堵器选择的大小与术前判断大小相关性好（r=0．91，P〈0．001）。术后即刻显示17例患者21个封堵器处穿隔血流消失，有3例患者3个封堵器处仍有微量残余分流，术后1个月至3年复查1例有微量分流。结论 ASA并发ASD的患者可行封堵治疗且疗效确切，而超声心动图在病例选择、术中引导等方面有其特殊性，应引起超声医生和临床医生的重视。     

经食管超声心动图在经胸微创房间隔和室间隔缺损封堵术中的应用

目的 探讨经食管超声心动图(TEE)在经胸微创房、室间隔缺损封堵治疗中的应用价值.方法 经胸超声心动图(TTE)粗筛34例房间隔缺损(ASD)患者和38例室间隔缺损(VSD)患者,拟行经胸微创封堵治疗.术中行TEE根据缺损位置、类型、大小选择合适的封堵器;引导封堵器放置,评价即刻封堵效果;术后1周内复查.结果 32例ASD和29例VSD患者封堵成功.术后I周内超声随访,封堵器位置均正常,3例ASD患者微量残余分流,患者心室重构改善,瓣膜反流程度减轻,肺动脉压力下降.结论 TEE对选择适合行经胸微创封堵的ASD、VSD患者、选择合适的封堵器、协助封堵器的释放,评价疗效均有重要的作用.经胸微创封堵ASD、VSD安全、有效.     

Effects of gadolinium contrast agent on aortic blood flow and myocardial strain measurements by phase-contrast cardiovascular magnetic resonance

Background

Many adult patients with secundum-type atrial septal defects (ASDs) are able to have these defects fixed percutaneously. Traditionally, this has involved an assessment of ASD size, geometry and atrial septal margins by transoesophageal echocardiography (TOE) prior to percutaneous closure. This is a semi-invasive technique, and all of the information obtained could potentially be obtained by non-invasive cardiovascular magnetic resonance (CMR). We compared the assessment of ASDs in consecutive patients being considered for percutaneous ASD closure using CMR and TOE.

Methods

Consecutive patients with ASDs diagnosed on transthoracic echocardiography (TTE) were invited to undergo both CMR and TOE. Assessment of atrial septal margins, maximal and minimal defect dimensions was performed with both techniques. Analyses between CMR and TOE were made using simple linear regression and Bland Altman Analyses.

Results

Total CMR scan time was 20 minutes, and comparable to the TOE examination time. A total of 20 patients (M:F = 5:15, mean age 42.8 years ± 15.7) were included in the analyses. There was an excellent agreement between CMR and TOE for estimation of maximum defect size (R = 0.87). The anterior inferior, anterior superior and posterior inferior margins could be assessed in all patients with CMR. The posterior superior margin could not be assessed in only one patient. Furthermore, in 1 patient in whom TOE was unable to be performed, CMR was used to successfully direct percutaneous ASD closure.

Conclusions

CMR agrees with TOE assessment of ASDs in the work-up for percutaneous closure. Potentially CMR could be used instead of TOE for this purpose.     

实时三维、多平面二维经食管超声心动图在房间隔缺损测量的对比研究

目的比较实时三维、多平面二维经食管超声心动图在房间隔缺损（atrial septal defect, ASD）测量的应用价值。 方法对67例继发孔型房间隔缺损患者分别应用经食管二维超声常规切面法、经食管二维超声十二切面法、实时三维经食管超声法进行测量,并将各测量结果与封堵器大小行相关性分析。 结果经食管二维超声常规切面法在整体（P < 0.001）、大ASD组（P < 0.001）、椭圆形ASD组（P < 0.01）测量ASD最大径小于实时三维经食管超声法,差异有统计学意义;经食管二维超声十二切面法在小ASD组（P < 0.05）测量ASD最大径大于实时三维经食管超声法,差异有统计学意义;实时三维经食管超声法测量房间隔缺损最大径与封堵器大小的相关性高于经食管二维超声常规切面法及十二切面法。 结论实时三维经食管超声可准确测量房间隔缺损,对封堵器选择有重要指导作用。经食管二维超声十二切面法可与实时三维经食管超声法互为补充。       

Clinical advantage of real-time three-dimensional transesophageal echocardiography for transcatheter closure of multiple atrial septal defects

This study sought to evaluate the usefulness of real-time three-dimensional (3D) transesophageal echocardiography (TEE) to guide the repair of multiple atrial septal defects (ASDs). Of 212 consecutive patients with secundum ASD who were scheduled for transcatheter closure of their ASDs, 27 had multiple ASDs. These patients underwent two-dimensional (2D) transthoracic echocardiography, 2D TEE, and 3D TEE. Overall, 18 patients had two defects, and 9 patients had three or more defects. The latter group included three patients with multi-fenestrated defects. Optimal 3D images were obtained in 93 % of the patients. In patients with two defects, information on the positional relation of the defects was obtained using 2D TEE and 3D TEE in 71 and 94 % of patients, respectively (P = 0.22). The positional relations of the defects could not be evaluated with 2D TEE in patients with three or more defects, whereas it could be evaluated with 3D TEE in all of these patients (0 vs. 100 %, P = 0.008). In all patients, 3D TEE proved superior to 2D TEE for providing sufficient information (96 vs. 48 %, P = 0.002). Procedural success was obtained in 26 patients (96.3 %), without complications. Transcatheter closure of multiple ASDs under 3D TEE guidance is effective and safe. Real-time 3D TEE can provide useful information regarding complex ASD morphology. It can thus contribute to developing a successful treatment strategy, especially in patients with three or more defects.     

Prevalence and prognostic value of acute cor pulmonale and patent foramen ovale in ventilated patients with early acute respiratory distress syndrome: a multicenter study

Purpose

We sought to determine the prevalence of and factors associated with acute cor pulmonale (ACP) and patent foramen ovale (PFO) at the early phase of acute respiratory distress syndrome (ARDS), and to assess their relation with mortality.

Methods

In this prospective multicenter study, 200 patients submitted to protective ventilation for early moderate to severe ARDS [PaO₂/F_IO₂: 115 ± 39 with F_IO₂: 1; positive end-expiratory pressure (PEEP): 10.6 ± 3.1 cmH₂O] underwent transthoracic (TTE) and transesophageal echocardiography (TEE) <48 h after admission. Echocardiograms were independently interpreted by two experts. Factors associated with ACP, PFO, and 28-day mortality were identified using multivariate regression analysis.

Results

TEE depicted ACP in 45/200 patients [22.5%; 95 % confidence interval (CI) 16.9–28.9 %], PFO in 31 patients (15.5 %; 95 % CI 10.8–21.3 %), and both ACP and PFO in 9 patients (4.5 %; 95 % CI 2.1–8.4 %). PFO shunting was small and intermittent in 27 patients, moderate and consistent in 4 patients, and large or extensive in no instances. PaCO₂ >60 mmHg was strongly associated with ACP [odds ratio (OR) 3.70; 95 % CI 1.32–10.38; p = 0.01]. No factor was independently associated with PFO, with only a trend for age (OR 2.07; 95 % CI 0.91–4.72; p = 0.08). Twenty-eight-day mortality was 23 %. Plateau pressure (OR 1.15; 95 % CI 1.05–1.26; p < 0.01) and air leaks (OR 5.48; 95 % CI 1.30–22.99; p = 0.02), but neither ACP nor PFO, were independently associated with outcome.

Conclusions

TEE screening allowed identification of ACP in one-fourth of patients submitted to protective ventilation for early moderate to severe ARDS. PFO shunting was less frequent and never large or extensive. ACP and PFO were not related to outcome.     

Successful totally transthoracic echocardiography guided transcatheter device closure of atrial septal defect in pregnant women

BACKGROUND Transcatheter device closure of atrial septal defect(ASD) guided by fluoroscopy and/or transesophageal echocardiography is a mature technology. Little study has focused on whether the technology can be guided totally by transthoracic echocardiography(TTE),even in pregnant women with ASD.AIM To evaluate the safety and efficacy of totally TTE guided transcatheter device closure of ASD in pregnant women.METHODS Six pregnant women(gestational age 20-26 wk) with ASD underwent transcatheter device closure totally guided by TTE at our cardiac center from January 2015 to August 2017. A routine transcatheter procedure without fluoroscopy or intubation and a domestic occluder were used in this study.RESULTS All patients had successful closure with good clinical results,and the overall immediate complete closure rate was 100%. The size of the occluder deployed ranged from 20 to 32 mm(26.7 ± 4.3 mm),the procedure time ranged from 30 to50 min(41.7 ± 7.5 min),and the length of hospital stay was 2-3 d(mean 2.2 ± 0.4 d). There were no serious cardiovascular related complications,and transient arrhythmias occurred in one patient during the procedure. During the follow-up period(3 mo to 2 years),no occluder dislodgement,residual fistulas,or thromboses occurred. All of the patients underwent vaginal delivery between 36 and 38 wk of gestation.CONCLUSION Totally TTE guided transcatheter device closure of ASD in pregnant women may be safe and effective.     

超声心动图在小儿及疑难房间隔缺损介入治疗病例中的应用探讨（附126例报告）

目的：评价超声心动图在继发孔型房间隔缺损（ASD）介入封堵治疗中的应用价值。方法2008年9月～2012年12月,126例继发型房间隔缺损患儿,其中男38例,女88例,年龄2.3～17.0岁,平均6.7±3.5岁。单一ASD 117例,多发性ASD 9例。其中1例合并肺动脉瓣狭窄（PS）,3例合并房间隔膨出瘤（ASA）。126例患儿均行经胸超声心动图（TTE）检查,少数肥胖患儿行经食管超声心动图（TEE）检查,根据检查结果选择封堵器型号,术中用TTE或TEE引导封堵器释放。术后采用TTE随访。结果124例患儿其中含边缘不足的7例疑难病例,应用进口或国产封堵器均成功封堵,成功率98.4%。经TTE或TEE测量ASD最大直径3.3～26.0mm,平均16.5±3.4mm。所选封堵器直径6.0～30.0mm,平均19.0±4.0mm。7例多发性ASD选用1枚封堵器,1例选用2枚封堵器获得成功。1例合并PS者同时完成介入治疗。124例患儿术后TTE随访发现,2例存在微量残余分流,并于1个月后自愈。结论超声心动图在小儿ASD介入适应症选择及介入过程中引导、术后随访中的作用仍不可替代。     

Impact of transcatheter closure of atrial septal defects on cardiac function

Purpose

The purpose of this study was to investigate the effects of transcatheter closure of atrial septal defects (ASD) on left ventricular function.

Methods

Conventional and three-dimensional echocardiographic methods (3D) were performed in 20 patients who underwent ASD closure. Diastolic and systolic volumes (LVVd and LVVs) and ejection fractions (EF) were determined by 3D methods. Doppler and tissue Doppler indices were also measured before and 1?day after the procedure. We determined the predictors of patients with a mitral early Doppler/tissue Doppler velocity ratio (E/E′) ≥8 after closure.

Results

Ejection fraction decreased (from 70?±?8 to 63?±?8%, p?=?0.005) after the procedure because of an equivalent increase in LVVs and LVVd maintaining the same cardiac output. Among the echocardiographic variables before ASD closure that correlated with E/E′ after closure, the receiver operating characteristic curve of E′ gave the largest area under the curve with E′ of 12.2?cm/s as the best predictor of patients with E/E′ ≥8 after ASD closure.

Conclusion

Atrial septal defect closure decreased EF on the surface, thereby maintaining the same stroke volume and cardiac output. Patients with diastolic dysfunction before closure might have a higher risk of developing congestive heart failure after ASD closure.     

PFO closuRE and CryptogenIc StrokE (PRECISE) registry: a multi-center, international registry

Background

The Premere? PFO closure device has a special design for closure of patent foramen ovale (PFO) including a flexible distance and angulation between the right and left disc providing minimal septal distortion. The primary objective of the study was to determine the degree of risk for stroke or transient ischemic attack (TIA) in patients after Premere? PFO closure device implantation.

Methods

In this multicenter, prospective observational registry, patients with a clinical indication for PFO closure were included. Patients had a history of stroke or TIA with right to left shunt. Follow-up visits were scheduled according to routine clinical practice.

Results

In 23 centers from 10 countries, 267 patients with successful device implantation were included. Assessment of right to left shunt after device implantation revealed no residual shunt in 71?%, small shunts in 16.8?%, and moderate or large residual shunts in 5.6 and 6.5?%. With common clinical practice, use of Coumadin or heparin decreased from 27?% pre- to 3?% post-implantation, while use of acetylsalicylic acid or thienopyridines increased from 64 to 95?% and 27 to 80?%, respectively; 18?% of patients were discharged with anti-platelet monotherapy. Mean follow-up was 11?±?9?months (range 1–24?months). There was no stroke or TIA. During follow-up, there was one sudden death. Atrial fibrillation occurred in five (1.9?%) patients. One (0.4?%) patient with a thrombophilic diathesis developed a thrombus.

Conclusions

In this prospective, international, multicenter PRECISE registry, the use of the Premere? PFO closure device for closure of PFO after stroke or TIA resulted in good clinical results with no recurrent event.     

Cardiac remodeling and effects on exercise capacity after interventional closure of atrial septal defects in different adult age groups

Background  

Interventional closure of atrial septal defects (ASD) has become a standard procedure in pediatric and adult patients. We report immediate and mid-term results in different adult age groups.     

Assessment of atrial septal defects in adults comparing cardiovascular magnetic resonance with transoesophageal echocardiography

Background

Many adult patients with secundum-type atrial septal defects (ASDs) are able to have these defects fixed percutaneously. Traditionally, this has involved an assessment of ASD size, geometry and atrial septal margins by transoesophageal echocardiography (TOE) prior to percutaneous closure. This is a semi-invasive technique, and all of the information obtained could potentially be obtained by non-invasive cardiovascular magnetic resonance (CMR). We compared the assessment of ASDs in consecutive patients being considered for percutaneous ASD closure using CMR and TOE.

Methods

Consecutive patients with ASDs diagnosed on transthoracic echocardiography (TTE) were invited to undergo both CMR and TOE. Assessment of atrial septal margins, maximal and minimal defect dimensions was performed with both techniques. Analyses between CMR and TOE were made using simple linear regression and Bland Altman Analyses.

Results

Total CMR scan time was 20 minutes, and comparable to the TOE examination time. A total of 20 patients (M:F = 5:15, mean age 42.8 years ± 15.7) were included in the analyses. There was an excellent agreement between CMR and TOE for estimation of maximum defect size (R = 0.87). The anterior inferior, anterior superior and posterior inferior margins could be assessed in all patients with CMR. The posterior superior margin could not be assessed in only one patient. Furthermore, in 1 patient in whom TOE was unable to be performed, CMR was used to successfully direct percutaneous ASD closure.

Conclusions

CMR agrees with TOE assessment of ASDs in the work-up for percutaneous closure. Potentially CMR could be used instead of TOE for this purpose.     

超声心动图在Ⅱ孔型房间隔缺损Amplatzer封堵治疗术中的应用

目的探讨超声心动图在筛选Ⅱ孔型房间隔缺损（ASD）病例并引导Amplatzer封堵伞介入方法关闭ASD中的应用价值。方法应用经食管超声心动图（TEE）按Amplatzer封堵法适应证条件筛选7例Ⅱ孔型ASD,经胸超声心动图（TTE）及X线引导进行Amplatzer封堵术。结果1例患者因ASD最大伸展径大于34mm,无相应的封堵伞而放弃封堵术,另1例患者因ASD缺损口距右房顶距离小于3mm,置入Amplatzer封堵伞未能封堵成功,放弃手术治疗,余5例成功进行了Amplatzer封堵术。所有病例TEE测量的ASD直径显著小于ASD最大伸展径［（17.2±1.9）mmvs（26.8±1.3）mm］,5例成功病例术后即刻、24h、1个月、3个月行TTE检查,术后无残余分流,术中、术后无并发症。结论超声心动图在Ⅱ孔型房间隔缺损介入治疗中占有极为重要、不可替代的地位。     

房间隔缺损经导管闭合术中超声心动图的监测价值

目的　探讨超声心动图在房间隔缺损（ASD）经导管闭合术中的监测作用。方法　经导管ASD闭合术患者20例,术前、术中、术后进行经胸或/和经食道超声心动图检查。结果　20例患者ASD均为单发继发孔型,超声测量房缺直径为22.3±8.1mm,术中伸展直径为25.2±8.1mm,选择Amplatzer封堵器型号10～36mm。术后即刻观察房缺完全闭合无残余分流者12例,少许残余分流者8例;5例6个月后残余分流消失,2例10个月后消失。结论　经导管ASD闭合术中超声心动图的应用对于封堵器型号的选择及术后疗效评价等均有较大的价值。     

超声心动图在多孔的2型房间隔缺损封堵术中的应用价值

目的 探讨超声心动图在多孔的2型房间隔缺损（ASD）封堵治疗中的应用价值。 方法 应用经食管超声心动图（TEE）或经胸超声心动图（TTE）诊断多孔的2型ASD23例，所有患者均在X-线和术中TTE监测下行封堵治疗，术后TTE跟踪复查评价其疗效。 结果23例患者封堵器置入均获成功，共放置38个封堵器。封堵器选择的大小与术前判断大小相关性非常好，相关系数r=0．9，P〈0．001。术后即刻显示18例患者33个封堵器处穿隔血流消失，有5例患者5个封堵器处仍有微量残余分流，术后1个月～3年复查2例有微量分流。 结论 多孔的2型ASD患者可行封堵治疗且疗效确切，但超声心动图对病例选择、术中引导等方面有其特殊性，应引起超声医师和临床医师的高度重视。     

Intracardiac and intraluminal echocardiography: indications and standard approaches

In particular clinical scenarios, transthoracic and transoesophageal echocardiography (TEE) have limitations. This study sought to test if intracardiac and intraluminal echocardiography (ICLE), including 2-D, M-mode and Doppler analysis with a miniaturised, multiple-frequency transducer-tipped catheter, is suitable for assessing distinct cardiac and vascular disorders. ICLE was employed in 10 animals using 6 standard approaches. In 12 patients undergoing device closure of patent foramina ovalia (PFO) (n = 6) or atrial septal defects (ASD) (n = 3), or aortic stent implantation (n = 3), interventional procedures were guided by ICLE and, for comparison, also by TEE. ICLE provided enhanced diagnostic information on the aorta, cardiac valves, main pulmonary vessels and both atria and, therefore, added to the diagnostic spectrum of TEE. Especially for guiding interventional procedures (e.g., device closure of atrial septal defects and patent foramina ovalia), ICLE was shown to be helpful. Compared with the conventional approach, the technique reduced fluoroscopy time for device closure procedures: 6.5 min vs. 8.9 min, p < 0.0011. With the patient in a supine position, ICLE was better tolerated than TEE. Complications did not occur, either with ICLE or with TEE. In conclusion, ICLE adds to conventional echocardiography and promises to become a clinical alternative for guiding interventional procedures.     

Cardiac CT Angiography (CCTA) predicts left atrial appendage occluder device size and procedure outcome

Aim

To investigate the role of cardiac CT angiography (CCTA) in predicting optimal left atrial appendage (LAA) occluder size and procedure outcome.

Methods and results

Thirty-six patients underwent pre-procedural CCTA. CCTA and TEE LAA orifice diameters and perimeters were compared with the implanted device size. CCTA 3D configuration was correlated with procedure outcome. Watchman? device (N?=?18): diameters were 21?±?4, 26?±?5 and 25?±?3 mm for TEE, CCTA and inserted device, respectively. Average perimeters were 61?±?10, 74?±?8 and 78?±?11 mm for TEE, CCTA and inserted device, respectively. Better agreement with the device size was found for CCTA compared to TEE (Bland–Altman). ACP? device (N?=?15): diameters were 20?±?5, 25?±?4 and 23?±?4 for TEE, CCTA and inserted device, respectively. Average perimeters were 58?±?11, 72?±?15 and 72?±?13 mm for TEE, CCTA and inserted device, respectively. Excellent correlation and agreement with the device size was found for CCTA compared to TEE. CCTA perimeter >100 mm and “cactus” 3D configuration had a specificity of 96 and 81% respectively for procedure failure.

Conclusions

CCTA LAA ostial perimeter predicted better the optimal occluder size as compared with the currently used LAA TEE diameter. Moreover, CCTA 3D data may help in predicting potential complications.