We are reporting a case of a patient who underwent an aortic valve replacement with previous coronary artery bypass grafting. During the operation we used a Doppler velocity probe to locate the exact position of the bilateral internal thoracic arteries. Once the vessels were identified, a suture was passed widely around each internal thoracic artery and a snare was positioned. With the aid of the Doppler velocity probe, we achieved a gentle occlusion of the vessels, applying enough traction on the snares to abolish the flow through the internal thoracic arteries.
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http://dx.doi.org/10.1016/j.athoracsur.2006.01.036 | DOI Listing |
Ultrasound J
January 2025
Health Sciences North Research Institute, Sudbury, ON, Canada.
The duration of mechanical systole-also termed the flow time (FT) or left ventricular ejection time (LVET)-is measured by Doppler ultrasound and increasingly used as a stroke volume (SV) surrogate to guide patient care. Nevertheless, confusion exists as to the determinants of FT and a critical evaluation of this measure is needed. Using Doppler ultrasound of the left ventricular outflow tract velocity time integral (LVOT VTI) as well as strain and strain rate echocardiography as grounding principles, this brief commentary offers a model for the independent influences of FT.
View Article and Find Full Text PDFJ Gerontol A Biol Sci Med Sci
December 2024
GENUD Toledo Research Group, Faculty of Sport Sciences, University of Castilla-La Mancha, Toledo, Spain.
Mean middle cerebral artery velocity (MCAv) and the pulsatility index (PI), at rest and in response to exercise, are important markers of cerebrovascular health status in middle-aged adults, when vascular decline assumes substantial relevance. Thus, this study aimed to describe and compare the responses of MCAv and PI to incremental exercise. Two hundred and forty-eight volunteers (50-58 years, 55% women) completed a ramp test on a cycle-ergometer.
View Article and Find Full Text PDFBMC Cardiovasc Disord
January 2025
Department of Ultrasound, Baoding No. 1 Central Hospital, Baoding, 071000, Hebei Province, China.
Aims: This study explores the clinical application of lung ultrasound scoring(LUS) combined with echocardiography in assessing right heart function in patients undergoing maintenance hemodialysis(MHD) and those with elevated pulmonary artery systolic pressure(PASP), as well as the correlation between LUS and right ventricular(RV) function.
Methods: Eighty five patients who underwent MHD combined with elevated PASP, at the First Central Hospital of Baoding City were selected. Divided into three groups based on PASP, and perform echocardiography and lung ultrasound examinations.
Ultrasound Obstet Gynecol
January 2025
Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK.
Objectives: To examine the relationship of ophthalmic artery (OA) Doppler indices with uterine artery (UtA) Doppler indices, selected maternal hemodynamic parameters and gestational age, and to evaluate the intraobserver reproducibility of OA Doppler indices.
Methods: This was a prospective cohort study of women recruited between 11 + 0 and 23 + 6 weeks' gestation using a stratified and random sampling approach to ensure adequate distribution across the gestational-age range. OA pulsatility index (PI), first peak systolic velocity (PSV1), second peak systolic velocity (PSV2) and peak systolic velocity ratio (PSV ratio), calculated as PSV2/PSV1, were measured twice in each eye by the same observer.
A A Pract
January 2025
Département d'Anesthésie, Hôpital Antoine Béclère, APHP.Université Paris-Saclay, Clamart, France.
We describe a patient with severe Arnold Chiari Malformation and syringomyelia who underwent gynecological laparoscopy in an emergency context; no brain imaging was available. We here report the successful use of optic nerve sheath diameter (ONSD) and middle cerebral artery (MCA) velocity measurements as surrogate monitoring for cerebral blood flow and intracranial pressure, respectively. MCA velocity was low when assessed after peritoneal insufflation and ONSD increased to 6.
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