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Literature DB >> 25190426

The role of the duty factor in ultrasound-mediated cardiac stimulation.

Abstract

The role of the duty factor (DF) in ultrasound-mediated cardiac stimulation is studied. Five 3-month-old female rats were exposed transthoracically to 3.5-MHz ultrasonic pulses of 2.0-MPa peak rarefactional pressure amplitude, variable DF, and variable pulse repetition frequency. A change in the heart rate was not observed following the 0.25%-DF sequence. A decrease of ∼4% in the heart rate was observed following the 0.50%-DF and 1.00%-DF sequences. Outcomes suggest a possible DF threshold for cardiac pacing.

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Year: 2014 PMID： 25190426 PMCID： PMC4144169 DOI： 10.1121/1.4893332

Source DB: PubMed Journal: J Acoust Soc Am ISSN： 0001-4966 Impact factor: 1.840

11 in total

1. Effect of low-frequency low-intensity ultrasound on contractile function of isolated heart.

Authors: N N Petrishchev; T D Vlasov; M M Galagudza; Yu N Makov
Journal: Bull Exp Biol Med Date: 2002-04 Impact factor: 0.804

Review 2. Mechanical bioeffects of ultrasound.

Authors: Diane Dalecki
Journal: Annu Rev Biomed Eng Date: 2004 Impact factor: 9.590

3. Ultrasonic cardiac pacing in the porcine model.

Authors: Bruce C Towe; Raymond Rho
Journal: IEEE Trans Biomed Eng Date: 2006-07 Impact factor: 4.538

4. Thresholds for premature contractions in murine hearts exposed to pulsed ultrasound.

Authors: A G MacRobbie; C H Raeman; S Z Child; D Dalecki
Journal: Ultrasound Med Biol Date: 1997 Impact factor: 2.998

5. Investigation of the possibilities of cardiac defibrillation by ultrasound.

Authors: A Smailys; Z Dulevicius; K Muckus; K Dauksa
Journal: Resuscitation Date: 1981-09 Impact factor: 5.262

6. Effects of ultrasound energy application on cardiac performance in open-chest Guinea pigs.

Authors: Fumiaki Kuma; Norihiro Ueda; Hiroyuki Ito; Toru Maruyama; Yoshikazu Kaji; Takehiko Fujino; Mine Harada
Journal: Circ J Date: 2006-10 Impact factor: 2.993

Review 7. The Bezold-Jarisch reflex. A historical perspective of cardiopulmonary reflexes.

Authors: D M Aviado; D Guevara Aviado
Journal: Ann N Y Acad Sci Date: 2001-06 Impact factor: 5.691

8. Detection of acoustic cavitation in the heart with microbubble contrast agents in vivo: a mechanism for ultrasound-induced arrhythmias.

Authors: Claudio Rota; Carol H Raeman; Sally Z Child; Diane Dalecki
Journal: J Acoust Soc Am Date: 2006-11 Impact factor: 1.840

The role of the duty factor in ultrasound-mediated cardiac stimulation.

1. Effect of low-frequency low-intensity ultrasound on contractile function of isolated heart.

Review 2. Mechanical bioeffects of ultrasound.

3. Ultrasonic cardiac pacing in the porcine model.

4. Thresholds for premature contractions in murine hearts exposed to pulsed ultrasound.

5. Investigation of the possibilities of cardiac defibrillation by ultrasound.

6. Effects of ultrasound energy application on cardiac performance in open-chest Guinea pigs.

Review 7. The Bezold-Jarisch reflex. A historical perspective of cardiopulmonary reflexes.

8. Detection of acoustic cavitation in the heart with microbubble contrast agents in vivo: a mechanism for ultrasound-induced arrhythmias.

9. Treatment of saphenous vein bypass grafts with ultrasound thrombolysis: a randomized study (ATLAS).

10. Transthoracic cardiac ultrasonic stimulation induces a negative chronotropic effect.

1. Ultrasound-induced heart rate decrease: role of the vagus nerve.

2. The Negative Chronotropic Effect in Rat Heart Stimulated by Ultrasonic Pulses: Role of Sex and Age.

3. Positive chronotropic effect caused by transthoracic ultrasound in heart of rats.

4. Ultrasound modulates ion channel currents.