Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Victor Lucas is active.

Publication


Featured researches published by Victor Lucas.


American Journal of Cardiology | 1999

Atrial septostomy as a bridge to lung transplantation in patients with severe pulmonary hypertension

Abraham Rothman; Mark S. Sklansky; Victor Lucas; Iraj A. Kashani; Robin D. Shaughnessy; Richard N. Channick; William R. Auger; Peter F. Fedullo; Cecelia M Smith; Jolene M. Kriett; Stuart W. Jamieson

Long waiting times for lung transplantation have limited the survival of patients with advanced pulmonary hypertension. Atrial septostomy has been used in this group of patients in an attempt to prolong survival. We evaluated the results of atrial septostomy in 12 patients using the static graded balloon dilation technique. Between December 1990 and May 1998, 10 women and 2 men (ages 13 to 56 years, mean 37 years) underwent atrial septostomy. Nine patients had primary and 3 patents had secondary pulmonary hypertension. Five patients deteriorated despite long-term intravenous prostacyclin infusions. The atrial septum was crossed with a Brockenbrough needle, followed by an 0.035-J exchange wire and progressively larger catheter balloons for atrial septal dilation, until systemic oxygen saturation decreased 5% to 10%. An atrial septal defect was successfully created in each patient. The mean right atrial pressure decreased from 23 to 18 mm Hg and the mean systemic oxygen saturation decreased from 93% to 85%. The mean cardiac index increased from 1.7 to 2.1 L/min/m2 and the mean systemic oxygen transport increased from 268 to 317 ml/min/m2. Complications occurred in 3 patients: transient hypotension during transesophageal echocardiography, a femoral pseudoaneurysm, and a femoral arteriovenous fistula. After septostomy, 6 patients had clinical improvement (resolution of ascites, edema, and no further episodes of syncope); 5 of these 6 patients underwent lung transplantation a mean of 6.1 months after septostomy. Six patients did not have clinical improvement after septostomy. Atrial septostomy improves the hemodynamic status and may be useful as a bridge to lung transplantation in selected patients with pulmonary hypertension.


The Journal of Pediatrics | 1997

Percutaneous coil occlusion of patent ductus arteriosus

Abraham Rothman; Victor Lucas; Mark S. Sklansky; Mark W. Cocalis; Iraj A. Kashani

OBJECTIVE To determine the success rate and safety of percutaneous patient ductus arteriosus (PDA) coll occlusion. DESIGN Thirty consecutive pediatric patients with small to moderate-size PDAs (minimum diameter < or = 4 mm) underwent percutaneous coll occlusion. The results were assessed by angiography and echocardiography. The mean age was 5.1 +/- 4.2 years (range, 0.8 to 18.8 years); mean weight was 19.2 +/- 10.3 kg (range, 8.1 to 40.0 kg). The mean minimum diameter of the PDA was 1.8 +/- 0.8 mm (range, 1.0 to 4.0 mm). RESULTS PDA occlusion was achieved with one coil in 24 patients, 2 coils in 3 patients and 3 coils in 3 patients. The mean coil/PDA diameter ratio was 2.5 +/- 0.5. Immediately after coil occlusion, 29 PDAs had no flow by anglography; one had a small residual shunt. There were no significant complications. In the first 24 hours after coil implantation, echocardiography showed complete occlusion in 28 patients, a small left-to-right shunt in the same patient that had a residual shunt by anglography, and a trace shunt in one additional patient. In the two patients with residual flow by echocardiography, follow-up ultrasonography revealed no residual shunt 1 and 3 months later. At a mean follow-up of 11.8 +/- 9.3 months (range, 0 to 36.0 months), there was no PDA flow by color Doppler echocardiography in any of the 30 patients. CONCLUSION Coil occlusion is a safe and effective method of percutaneous closure of small to moderate-size PDAs. The largest PDA that can be closed with this technique remains to be determined.


American Heart Journal | 1997

Balloon angioplasty of native aortic coarctation in infants 3 months of age and younger.

Yongwon Park; Victor Lucas; Mark S. Sklansky; Iraj A. Kashani; Abraham Rothman

The use of balloon dilation to treat native aortic coarctation is controversial, particularly in infants. Between January 1991 and September 1996, 12 patients < or = 3 months of age with native coarctation of the aorta (CoA) underwent balloon angioplasty (BA). All 12 lesions were dilated successfully with a mean reduction in peak systolic gradient from 49.3 +/- 16.5 mm Hg to 6.8 +/- 4.0 mm Hg (p < 0.001) and a mean increase in minimum CoA diameter from 2.4 +/- 0.6 mm to 5.5 +/- 1.3 mm (p < 0.001). Intimal flaps or tears were detected immediately after BA in 4 (33%) of 12 patients by angiography and in 8 (89%) of 9 patients by intravascular ultrasonography. No deaths or major complications related to the BA occurred. One patient had documented asymptomatic femoral artery obstruction, and one patient with hydrops fetalis and congenital pleural effusions died with gram-negative sepsis 1 week after the procedure. Follow-up was available for 10 patients (1 was lost to follow-up) between 2 months and 4.1 years (mean 2.4 +/- 1.3 years) after BA. No patient had an aortic aneurysm. Restenosis occurred in 5 (50%) of 10 patients, requiring reintervention a mean of 2.6 +/- 2.1 months after BA. One patient underwent surgical repair. Repeat BAs were performed in the other four patients; three were successful, and one with partial gradient relief required surgical repair. Five patients have not required reintervention a mean of 2.9 +/- 1.0 years after the initial BA. Among these five patients, follow-up intravascular ultrasound performed in three patients a mean of 2.0 +/- 1.9 years after BA showed favorable endovascular remodeling. There was a tendency for early reintervention in patients < 1 month of age and coexistence of a patent ductus arteriosus at the time of BA. In conclusion, selected infants < or = 3 months of age with discrete native CoA may be treated initially with balloon dilation. Most patients who have restenosis respond successfully to repeat BA.


Catheterization and Cardiovascular Diagnosis | 1996

Successful balloon dilation of an abdominal coarctation of the aorta in a patient with presumed Takayasu's aortitis

Iraj A. Kashani; Mark S. Sklansky; Hamid Movahed; Victor Lucas; Abraham Rothman

An 11-year-old male with a severe abdominal aortic coarctation, presumably secondary to aortitis, underwent successful percutaneous balloon dilation that resulted in near-complete relief of the obstruction. Intravascular ultrasound imaging showed a major endovascular tear immediately following dilation and satisfactorily excluded significant branch (superior mesenteric) artery compromise. Arterial remodeling was demonstrated with persistence of the gradient relief over a 12-month follow-up period.


American Journal of Medical Genetics | 1997

Familial occurrence of pulmonary atresia with intact ventricular septum

Paul Grossfeld; Victor Lucas; Mark S. Sklansky; Iraj A. Kashani; Abraham Rothman

Pulmonary atresia with intact ventricular septum (PA/IVS) is a rare disease, accounting for less than 3% of all congenital heart lesions. The cause of PA/IVS is unknown. We report the occurrence of two first cousins with PA/IVS, suggestive of autosomal dominant inheritance with incomplete penetrance. The study of such families should ultimately lead to the identification of the gene(s) that cause congenital heart disease.


Catheterization and Cardiovascular Interventions | 2006

Stent implantation as a stabilization technique in supracardiac total anomalous pulmonary venous connection

Adrienne Kilgore; Victor Lucas; Tyrone J. Collins; Christopher S. Snyder

A 6‐week‐old male presented in‐extremis with obstructed supra‐cardiac total anomalous pulmonary venous connection. Balloon dilation and stent implantation in the stenotic segment of the vertical vein relieved the obstruction until the patient was stable enough to undergo surgical repair. An unusual form of extrinsic vertical vein compression was found at surgery.


Congenital Heart Disease | 2006

Verapamil-sensitive Ventricular Tachycardia in an Infant

Christopher S. Snyder; James Bishara; Rani Darling; Victor Lucas

PATIENTS We report on a 6-month-old patient with a right bundle, superior axis tachycardia at 197 beats per minute. The tachycardia was unresponsive to adenosine, propranolol, flecainide, or amiodarone, or synchronized cardioversion. Overdrive atrial pacing terminated the tachycardia and since initiating verapamil, no recurrences of his tachycardia have occurred. CONCLUSIONS If an infant presents with a right bundle, superior axis ventricular tachycardia unresponsive to multiple antiarrhythmic medications and synchronized cardioversion, but responsive to overdrive atrial pacing, one must consider verapamil-sensitive ventricular tachycardia and initiate appropriate therapy.


American Journal of Cardiology | 1996

Comparison of results of stent implantation in small (<20 kg) children versus larger children with pulmonary artery stenoses

Hamid Movahhedian; Victor Lucas; John W. Moore; Iraj A. Kashani; Mark S. Sklansky; Gordon Luk; Abraham Rothman

We compared the results of stent implantation for pulmonary artery stenoses in patients weighing <20 kg (group 1, 17 patients, 21 stents) versus those weighing > or = 20 kg (group 2, 11 patients, 13 stents). There was no significant difference in the mean percent increase in diameter or mean percent gradient reduction acutely and at short-term follow-up between group 1 and 2 patients.


Catheterization and Cardiovascular Interventions | 2000

Wire-snare technique with distal flow control for coil occlusion of a modified Blalock-Taussig shunt.

Alisa Limsuwan; Mark S. Sklansky; Iraj A. Kashani; Robin D. Shaughnessy; Victor Lucas; Abraham Rothman

Coil occlusion of Blalock‐Taussig shunts has been associated with a high rate of device embolization. We describe a technique consisting of transvenous snaring and exteriorization of a guidewire advanced through a modified left Blalock‐Taussig shunt, allowing distal shunt flow control and successful coil occlusion of the shunt. Cathet. Cardiovasc. Intervent. 49:51–54, 2000.


American Journal of Cardiology | 1998

Percutaneous Coil Occlusion of Ascending Aorta to Pulmonary Artery Shunts

Geoffrey K. Lane; Victor Lucas; Mark S. Sklansky; Iraj A. Kashani; Abraham Rothman

Two patients with pulmonary atresia and intact ventricular septum each underwent early palliative surgery with a pulmonary valvotomy and an ascending aorta to pulmonary artery shunt. Adequate right ventricular growth and relief of pulmonary stenosis rendered the shunts unnecessary. The shunts were successfully occluded percutaneously with Gianturco coils.

Collaboration


Dive into the Victor Lucas's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge