+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Phased-array intracardiac echocardiography for guiding transseptal catheter placement: utility and learning curve

, : Phased-array intracardiac echocardiography for guiding transseptal catheter placement: utility and learning curve. Pacing and Clinical Electrophysiology 25(4 Pt 1): 402-407

The utility of a new intracardiac 64-element, phased-array, longitudinal ultrasound imaging system for guiding transseptal catheterization was assessed during 69 crossing attempts in 45 dogs because of the inherent limitations of fluoroscopy and mechanical ultrasound. Multifrequency (7.5-8.5 MHZ) imaging of the membranous fossa ovalis, posterior left atrium, and left atrial appendage was conducted from the right atrium. Contact of the Brockenbrough needle with the interatrial septum as reflected by membranous fossa ovalis "tenting" was uniformly identified. Transseptal crossing and advancement of the dilator and sheath were adequately imaged because of deeper ultrasound tissue penetration. Transseptal catheterization was successfully accomplished in 44 of 45 dogs: on the first attempt in 40 and with additional attempts in 4 and confirmed by direct far-field imaging of nonagitated saline injection via the sheath. Total transseptal catheterization time was 3.0 +/- 1.8 minutes. Unsuccessful first attempts and/or subsequent sheath pullback into the right atrium with catheter manipulation were also readily recognized. Insertion of the transseptal needle beyond the ultrasound imaging plane resulted in perforation of the posterior left atrial wall in three attempts. Accompanying effusions in these animals and three others related to subsequent intracardiac ablation catheter manipulation were readily identified and monitored echocardiographically. In conclusion, phased-array intracardiac imaging provides a highly reliable means of guiding transseptal access to the left atrium. In addition, inadvertent complications such as perforation and pericardial effusion development can be readily recognized.


PMID: 11991363

Other references

Dubick, M.A.; Cornell, T.; Majumdar, A.P.N., 1993: Bombesin-induced changes in expression of pancreatic enzymes in young and old rats. Bombesin is known to induce pancreatic growth. In aged animals, reduced responsiveness of tissues of the gastrointestinal tract to a number of hormones/peptides, including bombesin, has been demonstrated, yet the effects of chronic bombesin admini...

Nicolis, Gregoire, 1992: Dynamical systems, biological complexity and global change. (see Book Title) [Author] Solbrig, O T , H M van Emden and P G W J van Oordt (Ed ) IUBS (International Union of Biological Sciences) Monograph Series, No 8 Biodiversity and global change; Symposium held during the 24th Assembly of the International Union of Biological Sciences, Amsterdam, Netherlands, September 3-4, 1991 iv+224p International Union of Biological Sciences: Paris, France Illus Maps Paper ISBN 92-9046-079-9 : 21-32

Parman G.K., 1968: Fish protein concentrate its potential. University of Washington Publications in Fisheries New Series 4: 222-225

Olson C., 1989: Correlation of pathogenesis with variations in response and virus production in experimental bovine papillomatosis. Journal of Cellular Biochemistry Supplement (13 PART C): 211

Pearse, A.S., 1910: A preliminary list of the crustacea of Michigan. Report of the Michigan Academy of Science, 12 68-76

Niculae, A.; Kath, W.L., 1995: Pulse propagation in nonlinear-optical fibers with phase-locked phase-sensitive amplifiers. Recently the use of periodically spaced, phase-sensitive optical parametric amplifiers was proposed for compensating for linear loss in a nonlinear fiber-optic communication line [Opt. Lett. 18, 803 (1993)]. In the previous analysis, in which the...

Kubu, F.; Kvet, J.; Hejny, S., 1994: Fishpond management. Patten, B C [Editor] Wetlands and shallow continental water bodies, Vol 2 Case studies 391-404

Monteiro, M.A.; Britton, S.; Applebee, L.A.; Baqar, S., 2011: Synthesis and immunogenicity of a Helicobacter pylori lipopolysaccharide-based conjugate. Helicobacter pylori infection in humans is responsible for the onset of severe gastric disorders and a vaccine would be an improvement over current antibiotic-based treatments. Lipopolysaccharide (LPS; O-chain PS→core→lipid A) is a main H. pyl...

Stevenson R.; Keywood C.; Amadi A.; Davies R.; Patterson D., 1991: Angiotensin converting enzyme inhibitors and magnesium conservation in patients with chronic heart failure. European Heart Journal 12(ABSTR SUPPL): 126

Rayns, D.G., 1972: Myofilaments and cross bridges as demonstrated by freeze-fracturing and etching. Journal of Ultrastructure Research 40(1): 103-121