The Differential Effects of Respiration on the Left and Right Ventricles

Shuler, Robert H.; Ensor, Charles R.; Gunning, R. E. Lee; Moss, W. G.; Johnson, Victoria

doi:10.1152/ajplegacy.1942.137.3.620

Cited by 80 publications

(22 citation statements)

References 0 publications

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“…Stimulated by the ideas suggested by these results, we sought further information by simultaneous records of blood pressure and the ballistocardiogram. The conclusions to be drawn from our results agree with a well-known physiological viewpoint recently supported by results obtained in animal experiments (7). Pressure changes, and not changes in position of the heart, cause the respiratory variations of the ballistocardiogram.…”

supporting

confidence: 92%

On the Cause of the Respiratory Variation of the Ballistocardiogram, With a Note on Sinus Arrhythmia

Starr¹,

Friedland²

1946

J. Clin. Invest.

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supporting

confidence: 92%

On the Cause of the Respiratory Variation of the Ballistocardiogram, With a Note on Sinus Arrhythmia

Starr¹,

Friedland²

1946

J. Clin. Invest.

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“…Cardiac cycle length, left ventricular short-axis areas, location of the line through the center of the area relative to the cursor, and minor-axis dimensions at end-expiration and end-inspiration are shown in table 1. The cycle length was slightly but significantly shorter at end-inspiration than at end-expiration.…”

Section: Resultsmentioning

confidence: 99%

Effects of spontaneous respiration on left ventricular function assessed by echocardiography.

Andersen¹,

Vik‐Mo²

1984

Circulation

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The effects of quiet respiration on assessment of left ventricular function by twodimensional echocardiography were investigated in 12 healthy men. End-diastolic area in the parasternal short-axis view decreased with inspiration (from 17.3 + 2.1 [mean + SDI to 16.0 + 2. 1 cm2; p < .01), while end-systolic area did not change (from 7.6 + 1.4 to 7.7 + 1.5 cm2; NS). A fixed cursor that was located through the center of the left ventricular area at end-expiration made a tangential cut of the area at end-inspiration as the heart moved medially during inspiration. Thus left ventricular dimensions at end-inspiration were smaller along the cursor than through the center of the short-axis area both at end-diastole (1.9 + 1.7 mm: p < .01) and end-systole (3.8 + 4.0 mm; p < .01 Subjects and methodsTwelve men 22 to 41 years old were studied. None had evidence of cardiopulmonary disease as judged by history.physical examination, blood pressure at rest, electrocardiogram, M mode and two-dimensional echocardiograms, vital capacity, and forced expiratory volume in 1 sec. Two others were excluded from the study, one with a history of exerciseinduced asthma and one because of technically unsatisfactory recordings.Recording. The subjects were examined in a slight left lateral decubitus position during quiet respiration. Two-dimensional echocardiograms were obtained in the parasternal short-axis viewl0 at the papillary muscle level by a 78 degree phased array sector scanner (Toshiba Sonolayergraph SSH-IOA) with a 2.4 MHz hand-held transducer. Before recording, a steerable cursor was directed through the center of the left ventricle at endexpiration. The echocardiogram, one-lead electrocardiogram, and respiratory tracing by a nasal thermistor were recorded by a Sony video camera and were stored on and replayed from a video tape recorder (Victor Co. of Japan Ltd.). The electrocardiogram and the respiratory tracing were recorded simultaneously on a Honeywell strip chart recorder with a paper speed of 50 mm/sec. Care was taken to keep the body position and the transducer position unchanged during the recording.Measurements and calculations. The heart beats selected for analysis were

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“…During inspiration there is a fall in systemic blood pressure, even when this is measured relative to intrapleural pressure (2,7,12,(14)(15)(16)(17)(18), and oncometer and cinematographic studies of the heart (16) have shown that this is associated with a diminished left ventricular output and left ventricular diastolic volume. A diminished left atrial size has also been reported during inspiration (14), as would be expected if the diminished left ventricular output is due to decreased filling.…”

Section: Discussionmentioning

confidence: 99%

Measurements of Pulmonary Capillary Blood Flow and Gas Exchange Throughout the Respiratory Cycle in Man1

DuBois¹,

Marshall²

1957

J. Clin. Invest.

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The Differential Effects of Respiration on the Left and Right Ventricles

Cited by 80 publications

References 0 publications

On the Cause of the Respiratory Variation of the Ballistocardiogram, With a Note on Sinus Arrhythmia

On the Cause of the Respiratory Variation of the Ballistocardiogram, With a Note on Sinus Arrhythmia

Effects of spontaneous respiration on left ventricular function assessed by echocardiography.

Measurements of Pulmonary Capillary Blood Flow and Gas Exchange Throughout the Respiratory Cycle in Man1

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