Accuracy of impedance cardiography for evaluating trends in cardiac output: a comparison with oesophageal Doppler

Lorne, Emmanuel; Mahjoub, Yazine; Diouf, Momar; Sleghem, J.; Buchalet, C.; Guinot, Pierre-Grégoire; Petiot, S.; Kessavane, A.; Dehedin, Benedicte; Dupont, Hervé

doi:10.1093/bja/aeu136

Cited by 49 publications

(29 citation statements)

References 53 publications

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“…All patients underwent physical examination, electrocardiography (ECG), echocardiography, impedance cardiography (ICG), oxygen saturation measurements and laboratory tests. There are many studies that confirmed ICG as a reliable and cost-effective method of haemodynamic assessment in different groups of patients [12][13][14][15]. Impedance cardiography.…”

Section: Methodsmentioning

confidence: 99%

Non-invasive assessment of haemodynamic parameters in patients after Fontan procedure

Gutknecht

Kwiatkowska

Wałdoch

et al. 2020

Ann Agric Environ Med.

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Introduction and objective.Single ventricle anomaly is one of the complex congenital heart defects. A dependable non-invasive method of evaluation of Fontan circulation haemodynamics for early diagnosing unstable patients is hardly available in routine clinical practice. The aim of the study is non-invasive evaluation of the haemodynamic parameters in patients after Fontan operation. Materials and method. The study involved 11 participants (age 24.4±4.3 years) with functionally univentricular hearts after Fontan operation. Evaluation of haemodynamic parameters was performed in supine and sitting positions using the impedance cardiography method. Results. In comparative analysis, heart rate (70.1 vs.78.3 1/min; p=0.001), diastolic blood pressure (73.9 vs. 76.7 mm Hg; p=0.026), mean arterial blood pressure (84.5 vs. 88.0 mm Hg; p=0.013), systemic vascular resistance (1284.8 vs. 1334.9 dyn*s*cm -5 ; p=0.024), systemic vascular resistance index (2178.7 vs. 2272.8 dyn*s*cm -5 *m 2 ; p=0.018), pre-ejection period (124.2 vs. 136.2 ms; p=0.009), systolic time ratio (0.43 vs. 0.53; p=0.0001), and Zo (26.2 vs. 28.7 Ω; p<0.00001), were significantly higher in the sitting position. Stroke volume (75.4 vs. 68.5 ml; p=0.013), stroke index (42.7 vs. 39.0 ml*m -2 ; p=0.014), thoracic fluid content (38.5 vs. 35.4 1*kΩ -1 ; p=<0.00001), thoracic fluid content index (22.8 vs. 21.0 1*kΩ -1 *m -2 ; p=<0.00001), and leftventricular ejection time 291.1 vs. 260.1 ms; p=<0.00001, were significantly higher in the supine position. Conclusions. In patients after Fontan procedure, impedance cardiography can be a useful tool the assessment of shortterm haemodynamic changes provoked by postural changes. Its clinical value in patients with congenital heart defects should be further investigated.

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Section: Methodsmentioning

confidence: 99%

Non-invasive assessment of haemodynamic parameters in patients after Fontan procedure

Gutknecht

Kwiatkowska

Wałdoch

et al. 2020

Ann Agric Environ Med.

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“…Bio-impedance measures the changes in amplitude of the voltage change across the thorax [97]. Both positive and negative studies have been published, with some suggesting bio-impedance to be a useful non-invasive method to assess extracellular volume changes in patients undergoing cardiac surgery, with a close relationship with thermodilution [98,99], while others reported a negative correlation between the accuracy of bio-impedance and increased fluid accumulation within the thorax [100][101][102]. Bio-impedance systems are sensitive to intra-thoracic fluids, such as in patients with oedema or pleural fluid, often present in critically ill patients.…”

Section: Bio-impedance and Bio-reactancementioning

confidence: 99%

Contemporary perioperative haemodynamic monitoring

Pang

Hendrickx

Liu

et al. 2019

ait

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“…Impedance cardiography (ICG) is an inexpensive, non-invasive technique that measures changes in transthoracic electric resistance (bioimpedance) in order to estimate phasic alternations in the blood flow [17,18]. Validity, accuracy and repeatability of the results acquired by ICG have been confirmed in various comparative studies [19][20][21]. ICG is not only a useful tool for scientific studies but it also has prognostic value for hypertensive patients [22].…”

Section: Introductionmentioning

confidence: 99%

Haemodynamic parameters in postmenopausal women – beneficial effect of moderate continuous exercise training

Molisz¹,

Schmederer²,

Siebert³

et al. 2019

Ann Agric Environ Med.

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Introduction and objective. Physical effort plays a positive role in reducing the risk of cardiovascular diseases. The aim of this study was to assess the cardiovascular status in postmenopausal women after several years of regular amateur training. Materials and method. A total of 55 generally healthy females aged 50-70 years, of whom 38 were members of a senior exercise group and 17 comprised a control group, were enrolled in the study. Parameters of blood flow, vascular resistance, myocardial contractility and thoracic fluid content were measured in a 10-minute supine resting test by impedance cardiography. Thereafter, central blood pressure, augmentation index and pulse wave velocity were measured by applanation tonometry. Results. Exercising women have a better outcome than the control group, when evaluated both with impedance cardiography and with applanation tonometry. They have a lower heart rate-HR (65.1 vs 71.5; p = 0.033), higher blood flow (stroke index-SI, 58.6 vs 50.3; p = 0.040), better myocardial contractility (acceleration index-ACI, 108.8 vs 88.1; p = 0.027), higher preload (thoracic fluid content index-TFCI, 20.5 vs 18.1; p = 0.002), lower afterload (systemic vascular resistance index-SVRI, 1972.9 vs 2110.5; p = 0.026), lower central systolic blood pressure-cBPsys (119.0 vs 129.5; p = 0.037), lower augmentation pressure-AP (10.3 vs 15.0; p = 0.044) and lower pulse wave velocity-PWV (7.4 vs 8.4; p = 0.001). Conclusions. Regular moderate continuous aerobic exercise training has a beneficial impact on the cardiovascular system in postmenopausal women.

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Accuracy of impedance cardiography for evaluating trends in cardiac output: a comparison with oesophageal Doppler

Abstract: ICG appears to be a reliable method for the non-invasive monitoring of CO in patients undergoing general surgery.

Cited by 49 publications

References 53 publications

Non-invasive assessment of haemodynamic parameters in patients after Fontan procedure

Non-invasive assessment of haemodynamic parameters in patients after Fontan procedure

Contemporary perioperative haemodynamic monitoring

Haemodynamic parameters in postmenopausal women – beneficial effect of moderate continuous exercise training

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