Comparative Effects of Volume Loading on Pulmonary Venous Flow in Dogs with Normal Heart and with Myocardial Ischemia

@article{Akita1997ComparativeEO,
  title={Comparative Effects of Volume Loading on Pulmonary Venous Flow in Dogs with Normal Heart and with Myocardial Ischemia},
  author={Sachie Akita and Nobuyuki Ohte and Takeshi Hashimoto and Hitomi Narita and K Kobayashi and T Fujinami},
  journal={Angiology},
  year={1997},
  volume={48},
  pages={401 - 411}
}
The influences of cardiac loading conditions and left ventricular performance on pulmonary venous flow are poorly understood. The authors studied the effects of volume loading on the pattern of pulmonary venous flow in normal and ischemic hearts. Thirteen anesthetized dogs were equipped with a transit-time ultrasonic flow probe around the left upper pulmonary vein. In 6 of the dogs, the left anterior descending artery was ligated to induce myocardial ischemia. The remaining 7 dogs had normal… Expand
7 Citations
Relationships between velocities of pulmonary venous flow and plasma concentrations of atrial natriuretic peptide in healthy dogs.
TLDR
PF velocities were strongly correlated with PCWP and plasma ANP concentration in clinically normal dogs, and may serve as a sensitive indicator and provide additional information for monitoring acute preloading conditions and estimating atrial filling abnormalities in dogs. Expand
Effects of age, body weight, and heart rate on transmitral and pulmonary venous flow in clinically normal dogs.
TLDR
Age, BW, and HR are important factors that affect filling of the left atrium and left ventricle in clinically normal dogs. Expand
Comparison between invasive hemodynamic measurements and noninvasive assessment of left ventricular diastolic function by use of Doppler echocardiography in healthy anesthetized cats.
TLDR
IRT and Vp can be used as noninvasive indices of LV relaxation; Vp was independent of preload and heart rate in this study and may be useful as an indicator of LV filling pressure. Expand
Correlation between left ventricular end-diastolic pressure and peak left atrial wall strain during left ventricular systole.
  • K. Wakami, N. Ohte, +5 authors G. Kimura
  • Medicine
  • Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
  • 2009
TLDR
Elevated LV end-diastolic pressure is associated with a decrease of peak LA wall strain in the longitudinal direction during LV systole, and this correlation was also significant in patients with preservedLV systolic function. Expand
Assessing diastolic function with Doppler echocardiography using a novel index: ratio of the transmitral early diastolic velocity to pulmonary diastolic velocity.
TLDR
The results suggest that the E/D ratio reflects LV relaxation, and may potentially provide further information on LV relaxation. Expand
Non-Invasive Management of Peripheral Arterial Disease.
TLDR
There is a building body of literature to support the use of electrical stimulators in PAD, but this is low level to date and devices may be of special benefit to those with limited exercise capacity, and in non-reconstructable critical limb ischaemia. Expand

References

SHOWING 1-10 OF 36 REFERENCES
Pericardial Modulation of Right and Left Ventricular Diastolic Interaction
TLDR
The pericardium has a small but significant effect on LV diastolic P-V relations at physiological RV filling pressures, and this effect becomes considerable at high RV filling pressure. Expand
Effects of mitral regurgitation on pulmonary venous flow and left atrial pressure: an intraoperative transesophageal echocardiographic study.
TLDR
Pulmonary venous flow can be used to assess the severity of mitral regurgitation and reflects the effects ofMitral Regurgitation severity on the left atrial pressure a and v waves. Expand
Pulmonary venous flow velocity: relation to hemodynamics, mitral flow velocity and left atrial volume, and ejection fraction.
TLDR
Pulmonary venous diastolic flow velocity is influenced by the same factors that influence early left ventricular diastolics filling; pulmonary venous systolic flow velocities relates best to left atrial volume and atrial ejection fraction and does not relate toleft ventricular ejection fractions. Expand
Blood flow in pulmonary veins: III. Simultaneous measurements of their dimensions, intravascular pressure and flow.
TLDR
The extraparenchymal pulmonary veins act as a reservoir to the left atrium so that left ventricular stroke volume can be maintained relatively unaffected by beat by beat changes in right ventricular strokes, which could otherwise impede venous outflow of blood from the lung capillary bed. Expand
Pulmonary venous flow pattern--its relationship to cardiac dynamics. A pulsed Doppler echocardiographic study.
TLDR
It is suggested that pulmonary venous flow is influenced by dynamic changes in left atrial pressure created by contraction and relaxation of the atrium and ventricle, which is consistent with data obtained from invasive measurements in both dogs and man. Expand
Importance of Left Atrial Function in Patients with Myocardial Infarction
TLDR
The left atrial contribution to left ventricular function is increased in patients with remote myocardial infarction, attributed to the Frank- Starling mechanism in the left atrium. Expand
Relation of pulmonary vein to mitral flow velocities by transesophageal Doppler echocardiography. Effect of different loading conditions.
TLDR
This study relates changes in pulmonary venous and mitral flow velocities during different loading conditions as assessed by transesophageal echocardiography in the operating room to indicate that diastolic flow velocity in the pulmonary vein is determined by the same factors that influence theMitral flow velocity curves. Expand
Left ventricular filling dynamics: influence of left ventricular relaxation and left atrial pressure.
TLDR
PRFR is determined by both the left atrial pressure and the left ventricular relaxation rate and should be used with caution as an index ofleft ventricular diastolic function. Expand
Blood flow in pulmonary veins: II. The influence of events transmitted from the right and left sides of the heart.
TLDR
It is postulated that the thin walled extraperenchymal pulmonary veins together behave as a collapsible reservoir which enables outflow from them to be determined by changes in left atrial pressure, in spite of variations of pulsatile flow into them from the lungs. Expand
Ventricular Diastolic Pressure‐Volume Relations and the Pericardium: Effects of Changes in Blood Volume and Pericardial Effusion in Dogs
We investigated the role of the pericardium in the mechanism of shifts in the left ventricular (LV) diastolic pressure-volume relation produced by changes in circulating blood volume and byExpand
...
1
2
3
4
...