相似文献

1

A system for postoperative visualization and analysis of left ventricular pressure-volume loops.

Comput Biol Med. 1998 Jan;28(1):1-12. doi: 10.1016/s0010-4825(97)00045-0.

2

Accuracy and reproducibility of left ventricular ejection fraction measurements using an ambulatory radionuclide left ventricular function monitor.

J Nucl Med. 1991 May;32(5):796-802.

3

Measurement of left ventricular ejection fraction and volumes with three-dimensional reconstructed transesophageal ultrasound scans: comparison to radionuclide and thermal dilution measurements.

J Cardiothorac Anesth. 1989 Jun;3(3):260-8. doi: 10.1016/0888-6296(89)90105-1.

4

Clinical validation of a miniature nuclear probe system for continuous on-line monitoring of cardiac function and ST-segment.

J Nucl Med. 1991 Jan;32(1):37-43.

5

Measurement of left ventricular function during arm ergometry using the VEST nuclear probe.

Can J Appl Physiol. 1994 Dec;19(4):462-71. doi: 10.1139/h94-038.

6

Left ventricular function changes during pharmacological and physiological interventions and routine activities monitored in healthy volunteers by a portable radionuclide probe (VEST).

Int J Card Imaging. 1991;7(2):79-87. doi: 10.1007/BF01798048.

7

[Assessment of biventricular function using gated blood pool SPECT with QBS software: comparison with planar radionuclide ventriculography].

Kaku Igaku. 2002 Nov;39(4):469-76.

8

Evaluation of right and left ventricular volume and ejection fraction using a mathematical cardiac torso phantom.

J Nucl Med. 1997 Oct;38(10):1528-35.

9

Radionuclide monitoring of left ventricular function after sublingual nifedipine administration at rest and during moderate physical activity.

J Nucl Cardiol. 2001 Nov-Dec;8(6):669-76. doi: 10.1067/mnc.2001.118070.

10

Ambulatory monitoring of left ventricular function: walk and bicycle exercise in congestive heart failure.

J Nucl Med. 1997 Jun;38(6):948-53.

本文引用的文献

1

Comparison of gating methods for the real-time analysis of left ventricular function in nonimaging blood pool studies.

J Nucl Cardiol. 1995 Sep-Oct;2(5):405-12. doi: 10.1016/s1071-3581(05)80028-5.

2

Observer variability of radionuclide left ventricular volume determination at rest and during exercise.

Acta Radiol. 1993 Mar;34(2):179-82.

3

Left ventricular systolic and diastolic function measurements using an ambulatory radionuclide monitor: effects of different time averaging on accuracy.

J Nucl Med. 1993 Sep;34(9):1602-6.

4

Comparative efficacy of three indexes of left ventricular performance derived from pressure-volume loops in heart failure induced by tachypacing.

J Am Coll Cardiol. 1994 Jan;23(1):209-18. doi: 10.1016/0735-1097(94)90522-3.

5

The effects of warm versus cold blood cardioplegia on endothelial function, myocardial function, and energetics.

Circulation. 1993 Nov;88(5 Pt 2):II359-65.

6

Cardiovascular MR imaging: pressure-gating using the arterial pressure signal from a conventional ferromagnetic micromanometer-tip catheter.

Magn Reson Imaging. 1994;12(3):531-4. doi: 10.1016/0730-725x(94)92547-x.

7

A system for the on-line acquisition, visualization, and analysis of pressure-area loops.

Comput Biomed Res. 1994 Feb;27(1):61-7. doi: 10.1006/cbmr.1994.1007.

8

Comparison of two- and three-dimensional echocardiography with cineventriculography for measurement of left ventricular volume in patients.

J Am Coll Cardiol. 1994 Oct;24(4):1054-63. doi: 10.1016/0735-1097(94)90869-9.

9

Assessment of left ventricular stiffness and compliance.

Nucl Med Commun. 1994 Oct;15(10):836-44. doi: 10.1097/00006231-199410000-00010.

10

[The effect of an intracardiac left-right shunt on thermodilution measurements of cardiac output. An extracorporeal circulation model].

Anaesthesist. 1995 Jan;44(1):13-23. doi: 10.1007/s001010050128.

文献AI研究员

20分钟写一篇综述，助力文献阅读效率提升50倍。

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

文档翻译

学术文献翻译模型，支持多种主流文档格式。

一种用于左心室压力-容积环术后可视化和分析的系统。

A system for postoperative visualization and analysis of left ventricular pressure-volume loops.

作者信息

Beard B B, Stewart J R, Fischell T A

机构信息

Food and Drug Administration, Center for Devices and Radiological Health, Electrophysics Branch, Rockville, MD 20850, USA.

出版信息

Comput Biol Med. 1998 Jan;28(1):1-12. doi: 10.1016/s0010-4825(97)00045-0.

DOI:10.1016/s0010-4825(97)00045-0

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5827924/

Abstract

A patient monitoring system for continuous real-time monitoring of left ventricular (LV) function in the postoperative setting was developed. Common hemodynamic parameters and LV functional indices are all calculated from left ventricular pressure-volume loops (PV-loops). Visualization of the PV-loops, along with the hemodynamic parameter derived from them, provides valuable insight into ventricular function and patient recovery. The pressure component is obtained via a pressure sensing catheter placed during surgery. Volume is measured via non-imaging radionuclide techniques using a modified Capintec-VEST. Following surgery and transfer to the recovery unit, the patient's blood is labeled with Tc-99m. A portable gamma camera is used to measure baseline ejection fraction (EF) and to aid in placing the VEST. The specific radioactivity of the blood is calibrated using the baseline EF and thermodilution cardiac output. To confirm the volume measurement accuracy of this technique six patients undergoing bilateral heart catheterization were studied. Single-plane cineventriculographic LV volumes were compared to those calculated from the VEST's time activity curve.

摘要

开发了一种用于术后连续实时监测左心室（LV）功能的患者监测系统。常见的血流动力学参数和左心室功能指标均根据左心室压力-容积环（PV环）计算得出。PV环及其衍生的血流动力学参数的可视化，为心室功能和患者恢复提供了有价值的见解。压力分量通过手术期间放置的压力传感导管获得。容积通过使用改良的卡平泰克-VEST的非成像放射性核素技术进行测量。手术后，患者被转移到恢复病房，其血液用Tc-99m标记。使用便携式伽马相机测量基线射血分数（EF）并辅助放置VEST。使用基线EF和热稀释心输出量校准血液的比放射性。为了确认该技术的容积测量准确性，对6例接受双侧心导管检查的患者进行了研究。将单平面电影心室造影的左心室容积与根据VEST的时间-活性曲线计算得出的容积进行比较。