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ZM Hijazi

Publications and source records attributed to ZM Hijazi.

7 recordsLinked to original sources
PubMed2000

Transcatheter Closure of Secundum Atrial Septal Defects Using the Amplatzer Septal Occluder: Clinical Experience and Technical Considerations.

The Amplatzer septal occluder (AGA Medical Corporation, Golden Valley, MN) is designed to be an ideal device for the transcatheter closure of ostium secundum atrial septal defects. This device is user-friendly and has a complete closure rate of greater than 96% and few complications. It is easily retrievable and repositionable. It is also useful for closure of other types of shunts. Large atrial septal defects (ASDs) of up to 38 mm may now be closed. The use of the transesophageal echocardiogram (TEE) for evaluation of device placement is also reviewed.

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PubMed1998

Intravascular Ultrasound During Transcatheter Coil Closure of Patent Ductus Arteriosus: Comparison with Angiography.

Precise delineation of the size and shape of the ductus arteriosus may help in catheter closure. The use of Intravascular Ultra Sound (IVUS) to study the diameter of patent ductus arteriosus (PDA) has not been reported. We prospectively evaluated the use of IVUS and compared it to angiography in determining the size and shape of PDA and to assess the degree of coil protrusion into the descending aorta and the clinical relevance after coil closure. Twenty-six patients (17 female, 9 male) underwent transcatheter closure of PDA using single or multiple Gianturco coils. The median age of the patients was 1.7 yr (range, 2 monthsÐ34 yr) and the median weight was 10.9 kg (range 4.2Ð80 kg). A good quality IVUS image was obtained in all patients using 3.8 Fr, 30 MHz catheters. The median PDA diameter measured by angiography was 2.8 mm (range 1.6Ð5.7 mm) and by IVUS was 3.2 mm (range 1.7Ð5.7). There was excellent agreement between IVUS and angiography (D IVUS = 0.25+0.97*D angio, r = 0.90, (D: diameter in mm). After closure, coils could be seen protruding into the aorta with a median percent coil protrusion of 17.3% (range 0.0Ð47%). Only one patient had the coil protruding into more than 1/2 the aorta. This coil was retrieved and another coil was placed successfully. On follow-up at a median interval of 2.4 yr. (range 1.1Ð3.2 yr), there has been no clinical evidence for thromboembolic events. We conclude that IVUS use to assess the size of PDA is accurate. On mid-term follow-up, coil protrusion into the aorta seems to be benign. Further follow-up is needed.

Journal Article↗
PubMed1997

Balloon Angioplasty for Native Coarctation of the Aorta: Acute and Mid-Term Results.

BACKGROUND: Balloon angioplasty is an accepted treatment for recurrent coarctation of the aorta. Application of this technique to patients with native coarctation is controversial. OBJECTIVE: To report on the immediate and mid-term results of this procedure in patients with native coarctation, including infants <6 months of age. METHODS AND RESULTS: Twenty-four children underwent balloon angioplasty of their coarctation at a median age of 2 yr. (range 2 weeksÐ14.7 yr.) and median weight of 13 kg (range 3Ð64 kg). The mean peak systolic gradient across the coarctation decreased from 40 +/- 14 to 9 +/- 6 mmHg (p < 0.001) and the mean diameter of the narrowest area improved from 4.1 +/- 2.1 to 7.5 +/- 2.5 mm (p < 0.001). Four patients had recurrence of their coarctation, 3 of whom were < 3 months of age. Two of these patients had successful repeat dilation. At a mean follow-up interval of 2.4 +/- 1.7 years, one patient (4%) developed an aneurysm. Three patients underwent surgical repair (two for recurrence and one for resection of the aneurysm). The remaining patients (87.5%) are normotensive with mean peak systolic gradient between the right arm and the lower extremity of 4 +/- 9 mmHg. CONCLUSION: Balloon angioplasty for native coarctation is an effective and safe method for most patients with coarctation. Repeat dilation is possible and surgical repair of an aneurysm is safe.

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