Intraoperative Evaluation of the Reconstruction of the Atrioventricular Valves by Means of Transesophageal Echocardiography

Dahm, Manfred; Iversen, Stein; Schmid, Franz‐Xaver; Drexler, M; Erbel, Raimund; Oelert, H.

doi:10.1007/978-3-642-74629-1_30

Cited by 4 publications

(5 citation statements)

References 9 publications

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“…Intraoperative grading of IsMR before and after the procedure, commonly performed by TEE, was accepted as a mandatory procedure in this study. 22,23 However, downgrading of the mitral and tricuspid regurgitation, as a result of the unloading effect of general anesthesia, is common, and should be avoided with increased preload and/or afterload, as described by Byrne. 24 It is also believed that a detailed intraoperative inspection of mitral valve is very important.…”

Section: Discussionmentioning

confidence: 99%

Systematic Reductive Annuloplasty of the Mitral and Tricuspid Valves in Patients With End-Stage Ischemic Dilated Cardiomyopathy

et al. 2007

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Section: Discussionmentioning

confidence: 99%

Systematic Reductive Annuloplasty of the Mitral and Tricuspid Valves in Patients With End-Stage Ischemic Dilated Cardiomyopathy

et al. 2007

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“…Der rechte Ventrikel weist eine komplexe dreidimensionale Konfiguration ohne sichere schallreflektierende Orientierungspunkte auf, die eine echokardiographi- (26,130,139). Mittels Farb-Doppler-Technik ist die Schließfähigkeit der rekonstruierten Mitralklappe gut zu beurteilen (32).…”

Section: Rechtsventrikuläre Funktionunclassified

“…U einem Drittel der Patienten bei notwendiger Mitralklappenoperation zu einer entscheidenden Änderung des geplanten Vorgehens gefuhrt (137). Auch bei Operationen an der Trikuspidalklappe liefert die TEE wichtige Informationen und Entscheidungshlfen (26,130,137).…”

Section: Rechtsventrikuläre Funktionunclassified

Perioperativer Einsatz der transösophagealen Echokardiographie

Roewer¹,

Greim²

1994

Anästhesiol Intensivmed Notfallmed Schmerzther

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Transoesophageal echocardiography (TEE) is a visualising ultrasound technique that has entered the arena of anaesthesiology and intensive care shortly after its clinical introduction in the early 80s. Due to transducer positioning close to the heart, two-dimensional echocardiograms render high spatial resolution of cardiac structures and in adequate views continuously demonstrate the complete course of cardiac filling and contraction. The high sensitivity of the method, numerous options to assess morphological and functional parameters, and the low related risk involved for the patient explain the growing interest in TEE as a perioperative monitoring device. This utilisation, however, is currently limited by the high costs of the ultrasound equipment, the demand for specialists knowledge, the cost-benefit relation not yet thoroughly explored and the little propagated knowledge of the method's capacity. In addition, the need for information is growing due to the permanent technological progress of the equipment, which recurrently requires actualization in evaluating TEE.

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“…With the advent of TEE probes with higher frequencies (up to 5.0 MHz) and color flow imaging capabilities, the range of applications increased dramatically. Indications now include evaluation of the descending aorta in patients suspected to have a dissection or aneurysm of the aorta [4,5], evaluation of patients suspected to have endocarditis [6], for the evaluation of prosthetic valve function and to a lesser degree native valve function [7,8], for detection of intracardiac thrombi or patent foramen ovale [9], and to evaluate the effectiveness of surgical interventions in the operating theater [10].…”

Section: Introductionmentioning

confidence: 99%

The initial clinical evaluation of a transesophageal system with pulsed Doppler, continuous wave Doppler, and color flow imaging based on an annular array technology

Chapman¹,

Vandenbogaerde²,

Everaert³

et al. 1989

Int J Cardiac Imag

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The application of transesophageal echocardiography (TEE) offers access to a great deal of important clinical information regarding cardiovascular anatomy and physiology. Two applications which have not been reported and would appear to be of interest are continuous wave Doppler capabilities and the implementation of higher frequency transducers. A TEE system designed at the Institute of Biomedical Engineering in Trondheim, which is based on an annular array technology, offers these capabilities. We evaluated this instrument in the clinical setting in a series of 30 patients to test the probe function in terms of the tissue and flow imaging quality with a 7.5 MHz carrier frequency, and to report on the implementation of a continuous wave Doppler modality in a TEE probe. We found that the annular array method permitted the use of high frequency probes for tissue and flow imaging which resulted in excellent image resolution, and that shifting the carrier frequency of the transducer to a lower frequency permitted the optimization of the Doppler sensitivity. The continuous wave Doppler was used to measure abnormal blood flow velocities in excess of 5.0 m/s, and was particularly useful in the operating room as velocity measurements could be obtained without compromising the sterile field. The results of our evaluation indicate that high imaging frequencies and continuous wave Doppler can be applied by an annular array TEE transducer.

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Intraoperative Evaluation of the Reconstruction of the Atrioventricular Valves by Means of Transesophageal Echocardiography

Cited by 4 publications

References 9 publications

Systematic Reductive Annuloplasty of the Mitral and Tricuspid Valves in Patients With End-Stage Ischemic Dilated Cardiomyopathy

Systematic Reductive Annuloplasty of the Mitral and Tricuspid Valves in Patients With End-Stage Ischemic Dilated Cardiomyopathy

Perioperativer Einsatz der transösophagealen Echokardiographie

The initial clinical evaluation of a transesophageal system with pulsed Doppler, continuous wave Doppler, and color flow imaging based on an annular array technology

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