Inspiratory Muscle Weakness in Diastolic Dysfunction

Lavietes, Marc H.; Gerula, Christine; Fless, Kristin; Cherniack, Neil S.; Arora, Rohit

doi:10.1378/chest.126.3.838

Cited by 31 publications

(27 citation statements)

References 32 publications

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“…In another study, Lavietes et al [19] investigated the respiratory muscle strength in patients with diastolic heart dysfunction and found that these patients had a decrease of this strenght as compared to healthy individuals. In this study, the patient's ventricular function was not assessed.…”

Section: Discussionmentioning

confidence: 99%

Relação do comportamento da força muscular com as complicações respiratórias na cirurgia cardíaca

Riedi¹,

Mora²,

Driessen³

et al. 2010

Rev Bras Cir Cardiovasc

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Section: Discussionmentioning

confidence: 99%

Relação do comportamento da força muscular com as complicações respiratórias na cirurgia cardíaca

Riedi¹,

Mora²,

Driessen³

et al. 2010

Rev Bras Cir Cardiovasc

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“…Several studies have demonstrated that the measurement of respiratory muscle force by means of MIP and MEP may be very useful in the diagnosis and follow-up of pulmonary and cardiac diseases [2,3], as well as in patients affected with myasthenia gravis [4] or Guillain-Barré syndrome [5].…”

Section: Discussionmentioning

confidence: 99%

“…Although this test has possible limitations mainly due to no cooperation or noncompliance, several studies have demonstrated that MIP and MEP may be very useful in the diagnosis and follow-up of pulmonary and cardiac disease [2,3]. A reduction in MIP has been shown to be associated with a progressive clinical worsening in patients affected with myasthenia gravis [4] or Guillain-Barré syndrome [5].…”

mentioning

confidence: 99%

Maximal inspiratory and expiratory pressure measurement in tracheotomised patients

et al. 2006

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The present study compared four different sites and conditions for the measurement of maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) in 38 spontaneous breathing tracheotomised patients. Of the patients, 28 had chronic obstructive pulmonary disease (COPD).The four different conditions were: 1) through a cuff inflated cannula (condition A); 2) through the mouth with a deflated cannula (condition B); 3) through the mouth with a phonetic uncuffed cannula (condition C); and 4) through the mouth after stoma closure (condition D). Five trials in each condition were performed using a standardised method.The measurement of both MIP and MEP differed significantly depending on the condition of measurement. MIP taken in condition A was significantly higher when compared with conditions B, C and D. MEP in condition A was significantly higher when compared with condition B and D. In condition A the highest frequency of the best measurement of MIP and MEP was observed at the fourth and fifth effort, respectively. The same results were obtained after the selection of only COPD patients.In conclusion, respiratory muscle assessment differs significantly depending on measurement condition. Measurement through inflated cannula tracheotomy yields higher values of both maximal inspiratory and maximal expiratory pressure.

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“…Although the mechanisms underlying the relationship between diastolic function and exercise capacity have not yet been elucidated in detail, previous studies provided some explanations (30)(31)(32)(33)(34)(35)(36)(37). In tachycardia induced by exercise, abnormalities in LV diastolic relaxation and filling may limit the ability to achieve adequate cardiac output, even if systolic function is preserved (32).…”

Section: Relationship With Exercise Capacitymentioning

confidence: 99%

“…An excessive increase in pulmonary capillary wedge pressure during exercise may be the main cardiac cause of exertional dyspnea (30,33), and abnormalities in UCG tissue Dopplerderived diastolic F (x) are related to elevated pulmonary capillary wedge pressure (34,35). Moreover, LV diastolic dysfunction may be related to skeletal muscle weakness (36), particularly inspiratory muscle weakness (37), causing dyspnea and tachypnea during exercise. We discussed these matters in our previous study (31).…”

Section: Relationship With Exercise Capacitymentioning

confidence: 99%

Utility of Phase Standard Deviation and Histogram Bandwidth, Derived from Phase Analysis, as Clinical Indicators of Heart Failure

Tomita

Nakae

Hayashi

et al. 2017

Annals of Nuclear Cardiology

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Purpose: "Heart Function View (HFV)" is a software that performs phase analysis as well as functional assessment of the left ventricle (LV) using myocardial perfusion single photon emission computed tomography (SPECT) (MPS). Phase analysis-derived phase standard deviation (PhSD) and histogram bandwidth (PhHB) are good indices for detecting LV dyssyncrony. We aimed to examine whether PhHB and/or PhSD (PhHB/PhSD) are useful clinical indicators that reflect the severity of heart failure (HF) in comparison with the LV ejection fraction (EF). Methods: Patients underwent 99mTc-tetrofosmin quantitative gated MPS including treadmill exercise. In HFV analyses, patients with induced ischemia were excluded. Phase and time-volume curve analyses were performed using HFV (n=66).Results: PhHB/PhSD correlated with LV end-diastolic volume (EDV), end-systolic volume (ESV), the first-third filling fraction (1/3FF), and peak filling rate (PFR) as well as echocardiography tissue Doppler-derived E/e' as hemodynamic parameters of HF severity. LVEF also correlated with these hemodynamic parameters, except for 1/3FF. PhHB/PhSD positively correlated with log BNP as a neurohumoral marker of HF severity. LVEF negatively correlated with log BNP. PhHB/PhSD negatively correlated with exercise capacity as physiological indicators of HF severity, whereas LVEF did not. PhHB/PhSD were significantly greater in patients receiving cardiac resynchronization therapy (CRT, n=6) than in non-CRT patients (n=66), whereas LVEF were lower. Conclusion: PhHB/PhSD, similar to LVEF, are useful clinical indicators for evaluating HF severity. However, the clinical significance of LVEF and PhHB/PhSD differ. Thus, a phase analysis may additively offer useful information for the management of HF.

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Inspiratory Muscle Weakness in Diastolic Dysfunction

Cited by 31 publications

References 32 publications

Relação do comportamento da força muscular com as complicações respiratórias na cirurgia cardíaca

Relação do comportamento da força muscular com as complicações respiratórias na cirurgia cardíaca

Maximal inspiratory and expiratory pressure measurement in tracheotomised patients

Utility of Phase Standard Deviation and Histogram Bandwidth, Derived from Phase Analysis, as Clinical Indicators of Heart Failure

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