Hemodynamics and Gas Exchange During Angioscopy in the Dog

Shure, Deborah; Moser, Kenneth M.; Konopka, Ronald G.
February 1984
Angiology;Feb1984, Vol. 35 Issue 2, p97
Academic Journal
We have previously developed a technique for the in vivo visualization of the pulmonary arteries in the experimental animal with a fiberoptic instrument (angioscope). To assess the potential hemodynamic and gas exchange effects of angioscopy, we studied five dogs before and after pulmonary embolization. Sequential observations were made of arterial blood gases, mean arterial pressure, pulmonary artery pressure, heart rate, cardiac output, and the electrocardiogram. The most common arrhythmias were ventricular premature contractions which were comparable to those seen with right heart catheterization. Statistically significant, but clinically minor, effects were found on cardiac output, mean arterial pressure, and heart rate in dogs when angioscopy was performed after pulmonary embolization. We conclude that fiberoptic angioscopy does not induce deleterious effects on hemodynamics or gas exchange in the experimental animal, prior to or after embolization.


Related Articles

  • Angioscopy-Assisted Intraoperative Transluminal Angioplasty: Preliminary Report. Shiau-Ting Lai; Kwok-Kei Cheng // Vascular Surgery;Nov/Dec1988, Vol. 22 Issue 6, p373 

    Angioscopy as a guide for intraoperative transluminal angioplasty (ITA) was used in the treatment of 13 segmental arterial stenoses in 12 patients (10 men, 2 women). Ages ranged from fifty-eight to seventy-five years (mean: 68.33 ± 4.85). The authors successfully visualized vessels in 100% of...

  • Automatic optimum order selection of parametric modelling for the evaluation of abnormal intra-QRS signals in signal-averaged electrocardiograms. Lin, C.-C.; Chen, C.-M.; Yang, I.-F.; Yang, T.-F. // Medical & Biological Engineering & Computing;Mar2005, Vol. 43 Issue 2, p218 

    Abnormal intra-QRS potentials (AIQPs) in signal-averaged electrocardiograms have been proposed as a risk evaluation index for ventricular arrhythmias. The purpose of the paper was to develop an automatic algorithm for selecting the optimum parametric model order in the analysis of AIQPs to make...

  • A Serial Observation of Coronary Thrombi in Vivo by a New Percutaneous Transluminal Coronary Angioscope. Mizuno, Kyoichi; Miyamoto, Akira; Isojima, Kazushige; Kurita, Akira; Senoo, Akira; Arai, Tsunenori; Kikuchi, Makoto; Nakamura, Haruo // Angiology;Feb1992, Vol. 43 Issue 2, p91 

    This study was undertaken to observe coronary thrombus formation serially from an antegrade perspective by means of a new thin flexible angioscope that has an inflatable balloon at the distal tip and an angulation mechanism. To test its capabilities, thrombi were induced in the left anterior...

  • Optimal Combinations of Color Space Components for Detection of Blood Vessels in Eye Fundus Images. Patašius, M.; V. Marozas; D. Jegelevicius; A. Lukoševicius // Electronics & Electrical Engineering;2009, Issue 91, p53 

    Most of the studies so far have used the green component of RGB for blood vessel recognition in eye fundus images with some using luminance. However, the suitableness of such choice and possible alternatives have not been sufficiently explored. We aimed to find the linear color combinations that...

  • Reliability and accuracy of heart rate variability metrics versus ECG segment duration. McNames, James; Aboy, Mateo // Medical & Biological Engineering & Computing;Sep2006, Vol. 44 Issue 9, p747 

    Despite the exponential growth in heart rate variability (HRV) research, the reproducibility and reliability of HRV metrics continues to be debated. We estimated the reliability of 11 metrics calculated from 5 min records. We also compared the accuracy of the HRV metrics calculated from ECG...

  • Cardiometry. Rudenko, Mikhail; Voronova, Olga; Zernov, Vladimir // Kardio List;Mar/Apr2012, Vol. 7 Issue 3/4, p120 

    Introduction Contrary to cartography, that establishes correlations between specific cardiac signal shapes and clinical localization of pathology, cardiometry delivers quantitative evaluation of hemodynamic parameters and qualitative assessment of functions, based on qualitative analysis of ECG...

  • The cardiac effects of a mobile phone positioned closest to the heart. Tamer, Ali; Gündüz, Hüseyin; Özyıldırım, Serhan // Anatolian Journal of Cardiology / Anadolu Kardiyoloji Dergisi;Oct2009, Vol. 9 Issue 5, p380 

    Objective: The aim of this study was to evaluate the effect of mobile phone (MP) on cardiac electrical activity by examining the heart rate variability (HRV), QT, P dispersions and blood pressure (BP) while the MP is located on the precordium. Methods: A total of 24 healthy volunteers were...

  • The Finnish Cardiovascular Study (FINCAVAS): characterising patients with high risk of cardiovascular morbidity and mortality. Nieminen, Tuomo; Lehtinen, Rami; Viik, Jari; Lehtimäki, Terho; Niemel, Kari; Nikus, Kjell; Niemi, Mari; Kallio, Janne; Kööbi, Tiit; Turjanmaa, Väinö; Kähönen, Mika // BMC Cardiovascular Disorders;2006, Vol. 6, p9 

    Background: The purpose of the Finnish Cardiovascular Study (FINCAVAS) is to construct a risk profile — using genetic, haemodynamic and electrocardiographic (ECG) markers — of individuals at high risk of cardiovascular diseases, events and deaths. Methods and design: All patients...

  • Alpha-rhythm stimulation using brain entrainment enhances heart rate variability in subjects with reduced HRV. Casciaro, Francesco; Laterza, Vincenza; Conte, Sergio; Pieralice, Maria; Federici, Antonio; Todarello, Orlando; Orsucci, Franco; Conte, Elio // World Journal of Neuroscience;Nov2013, Vol. 3 Issue 4, p2013 

    In the present research, we have used the brain entrainment (BWE) treatment simultaneously recording time series data of R-R intervals of the ECG during rest condition. In detail, we have used alpha brain stimulation and we have found that it induces an enhancement of HRV, particularly in Total...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics