Analysis of heart rate response to maximal expiratory pressure and Valsalva maneuver in healthy young men

Minatel, Vinícius; Karsten, Marlus; Neves, Laura Maria Tomazi; Pissinato, Isabella Gracindo; Beltrame, Thomas; Borghi‐Silva, Audrey; Catai, Aparecida Maria

doi:10.1016/j.autneu.2011.05.029

Cited by 2 publications

(26 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interaction between sympathetic reflex and vagal reflex, probably triggered by the pulmonary stretch receptors, is responsible for the cardiovascular responses during the VM 17,19,37. The peripheral vascular resistance, which increases in response to decreased venous return, caused by increased intrathoracic pressure during the VM, drops immediately after cessation of the maneuver; this promotes an increase in venous return which, through the baroreceptors, stimulates vagal recovery, leading to marked bradycardia 30,37. Taking into account the structural and mechanical pathophysiological changes in the respiratory system of COPD patients, the results reported in literature justify a VI lower than 0.7, confirming an ANS integrity loss in these subjects.…”

Section: Discussionmentioning

confidence: 99%

“…After a deep inspiration their nose was occluded by a nose clip to prevent air leakage. The patients performed a breath-holding maneuver for 15 seconds,30 after which expiration was initiated on the researcher’s command. Facial flushing, jugular stasis, chest movements and rapid HR increase followed by bradycardia were observed to guarantee the correct performance of the VM 30.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Is cardiac autonomic modulation during upper limb isometric contraction and Valsalva maneuver impaired in COPD patients?

Goulart¹,

Cabiddu²,

Schneiders³

et al. 2017

COPD

View full text Add to dashboard Cite

PurposeTo evaluate the heart rate variability (HRV) indices and heart rate (HR) responses during isometric contraction (IC) and Valsalva maneuver (VM) in COPD patients.MethodsTwenty-two stable moderate to severe COPD patients were evaluated. R-R intervals were recorded (monitor Polar® S810i) during dominant upper limb IC (2 minutes). Stable signals were analyzed by Kubios HRV® software. Indices of HRV were computed in the time domain (mean HR; square root of the mean squared differences of successive RR intervals [RMSSD] and HRV triangular index [RR tri index]) and in the frequency domain (high frequency [HF]; low frequency [LF] and LF/HF ratio). The HR responses were evaluated at rest, at the peak and at the nadir of the VM (15 seconds). The Valsalva index was also calculated.ResultsDuring IC: time domain indices (mean HR increased [P=0.001], RMSSD, and RR tri index decreased [P=0.005 and P=0.005, respectively]); frequency domain indices (LF increased [P=0.033] and HF decreased [P=0.002]); associations were found between forced expiratory volume in 1 second (FEV1) vs RMSSD (P=0.04; r=−0.55), FEV1 vs HR (P=0.04; r=−0.48), forced vital capacity (FVC) vs RMSSD (P=0.05; r=−0.62), maximum inspiratory pressure (MIP) vs HF (P=0.02; r=0.68). FEV1 and FVC justified 30% of mean HR. During VM: HR increased (P=0.01); the nadir showed normal bradycardic response; the Valsalva index was =0.7.ConclusionCOPD patients responded properly to the upper limb IC and to the VM; however, HR recovery during VM was impaired in these patients. The severity of the disease and MIP were associated with increased parasympathetic modulation and higher chronotropic response.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Is cardiac autonomic modulation during upper limb isometric contraction and Valsalva maneuver impaired in COPD patients?

Goulart¹,

Cabiddu²,

Schneiders³

et al. 2017

COPD

View full text Add to dashboard Cite

show abstract

“…The subjects were instructed not to drink alcoholic and/or stimulating beverages for at least 12 h before the test, to avoid intense exercise and to have a period of good‐quality sleep on the night before the data collection (Minatel et al . ).…”

Section: Methodsmentioning

confidence: 97%

“…; Minatel et al . ). The subjects were instructed to wear loose clothing to ensure that the respiratory movements were not limited.…”

Section: Methodsmentioning

confidence: 97%

“…Nevertheless, a previous study by our group found that, although the ratio between the estimated workload of the manoeuvres and the heart rate variation was the same in MEP and the VM, the heart rate response in the MEP measure showed lower cardiac stress than that observed during the VM (Minatel et al . ). These results showed that time is the main factor in the different heart rate responses observed during the VM and MEP.…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Maximal expiratory pressure and Valsalva manoeuvre do not produce similar cardiovascular responses in healthy men

Minatel

Takahashi

Perseguini

et al. 2016

Experimental Physiology

View full text Add to dashboard Cite

New Findings r What is the central question of this study?This is the first study to evaluate and describe the cardiovascular responses during maximal expiratory pressure compared with the Valsalva manoeuvre, and whether those responses are similar. r What is the main finding and its importance?This study showed that the duration of the manoeuvres appears to be responsible for the different physiological mechanisms involved in the cardiovascular responses to each manoeuvre and that the intensity of expiratory effort was related to the response in maximal expiratory pressure. These results are important to identify the risks to which subjects are exposed when performing these manoeuvres.The main purpose of this study was to compare the cardiovascular responses between the Valsalva manoeuvre (VM) and maximal expiratory pressure (MEP) and to evaluate the effect of age on these responses. Twenty-eight healthy men were evaluated and divided into two groups, younger (n = 15, 25 ± 5 years) and middle aged (n = 13, 50 ± 5 years), and they performed the VM and MEP measurement. The VM consisted of an expiratory effort (40 mmHg) against a manometer for 15 s, and the MEP was performed according to American Thoracic Society guidelines. The cardiovascular responses were analysed at rest, isotime (3 s), peak, nadir and recovery, and the cardiovascular variations ( ) were calculated as peak or isotime minus resting values. For the statistical analysis, we used two-way ANOVA (P < 0.05). We observed that MEP and the VM generate similar changes in cardiac output (P > 0.05), but MEP presents higher values for mean arterial pressure (MAP Peak , MAP Isotime , MAP and MAP Isotime ) than those observed in the VM (P < 0.05). The execution time of the manoeuvres (VM ß15 s and MEP ß5 s) appears to be largely responsible for the activation of different physiological mechanisms involved in the cardiovascular control for each manoeuvre, and the intensity of expiratory effort is related to the higher response of MAP and peripheral vascular resistance (PVR Isotime and PVR Isotime ) during MEP (P < 0.05). Moreover, it appears that age affects only the heart rate and PVR responses V. Minatel and others (P < 0.05), which were higher in the young and middle-aged group, respectively. Based on these findings, we can conclude that MEP and the VM do not generate similar cardiovascular responses, except for cardiac output.

show abstract

Analysis of heart rate response to maximal expiratory pressure and Valsalva maneuver in healthy young men

Cited by 2 publications

References 2 publications

Is cardiac autonomic modulation during upper limb isometric contraction and Valsalva maneuver impaired in COPD patients?

Is cardiac autonomic modulation during upper limb isometric contraction and Valsalva maneuver impaired in COPD patients?

Maximal expiratory pressure and Valsalva manoeuvre do not produce similar cardiovascular responses in healthy men

Contact Info

Product

Resources

About