Studies on Intra-Abdominal Pressure. I. Negative Intra-Abdominal Pressure as a Normal Condition

Wagoner, George

doi:10.1097/00000441-192605000-00009

Cited by 21 publications

(7 citation statements)

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“…To determine the range and effect of pressure changes of the sub-diaphragmatic pressure Wagoner [12] underwent a series of investigations. First he recorded sub-diaphragmatic pressure in the following animals: cats (−8 to −14 cmH 2 0), monkeys (−2 to −6 cmH 2 0), and rabbits (−30 to −55 cmH 2 0).…”

Section: Discussionmentioning

confidence: 99%

“…Wagoner[12] tested this in dogs and found positive pressure immediately following closure, relative atmospheric pressure 12 hours post, and 25–36 hours were necessary for the values to return to pre-surgical pressure levels. Therefore closing the abdomen does not restore the original thoraco-abdominal mechanical status.…”

Section: Discussionmentioning

confidence: 99%

“…The gastrointestinal tract during eupnea normally rests at a positive pressure (compared to atmospheric), however the peritoneal space rests at sub-atmospheric pressure and is known to aid in diaphragm dissention [10–12]. Upper abdominal surgery which disrupts the pressure in the peritoneal space results in a reduction in vital capacity, tidal volume, and expiratory reserve volume [8, 9, 11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Laparotomy on the Swallow–Breathing Relationship in the Cat

Pitts

Rose

Poliaček

et al. 2014

Lung

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Swallow occurs predominantly in the expiratory phase (E) of breathing. This phase preference is thought to contribute to airway protection by limiting the passage of material through the pharyngeal airway with little or no inspiratory (I) airflow. This phase preference is attributed to central interactions between the swallow and breathing pattern generators. We speculated that changes in peripheral mechanical factors would influence the respiratory phase preference for swallow initiation. We induced swallowing in anesthetized spontaneously breathing cats by injection of water into the oropharynx. In animals with intact abdomens, 83% of swallows were initiated during E, 7% during I, 7% during E-I phase transition and 3% during I-E transition. In animals with open anterior midline laparotomy, only 38% of swallows were initiated during E, 33% during I, 17% during the E-I transition, and 12% during I-E. The results support an important role for feedback from somatic and/or visceral thoraco-abdominal mechanoreceptors for swallow-breathing coordination after laparotomy.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Laparotomy on the Swallow–Breathing Relationship in the Cat

Pitts

Rose

Poliaček

et al. 2014

Lung

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“…1959, Claridge and Shuttleworth 1964, Susset et al 1965, Wise 1968, Gierup et al 1969, Frimodt-Meller 1972, Rowan et al 1972 or by means of a manometer freely mobile within the bladder Lattimer 1962, Warrell et al 1963). placed in the abdominal cavity by a surgical procedure (Lam 1939, Rushmer 1946, Drye 1948 or by means of a needle (Wagoner 1926) or a catheter (Overholt 1931) inserted through the abdominal wall. The values within brackets are the bladder volumes at inition of micturition.…”

mentioning

confidence: 99%

Transmural Pressure of the Urinary Bladder Wall

Bjerle

1974

Acta Physiologica Scandinavica

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BJERLE, P. Transmural pressure of the urinary bladder wall. Acta physiol. scand. 1974. 92. 480-487. Intragastric, perivesical and intravesical pressures were registered during slow filling of the urinary bladder in nine healthy men in the supine and sitting positions. Intragastric pressure was fairly constant in both positions, but intravesical pressure rose and there was also a slight rise of perivesical pressure. I n both body positions transmural pressure, i.e. the pressure difference between the inside and the outside of the tbladder, rose during bladder filling. In both body positions at bladder volumes < 300 ml, in this material, transmural pressure, 4-143003. Acta physlol. wand. Vol. 92: 4

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“…He considers this process to be a reflex mechanism dependent upon an intact neuromuscular system, and points out the clinical bearing on intraperitoneal conditions, and functional interrelationship between the pleural and peritoneal cavities. Previous attempts to obtain measurements of abdominal pressure have been accompanied by difficulties (2,3,4). When fluid is injected at a certain rate into the abdominal cavity hyperbolic curves are obtained in which the pressure rise is slow at first and then becomes more rapid.…”

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confidence: 99%

The Influence of Changes of Abdominal Tension Upon Pulmonary Function

Kountz¹,

Gottlieb²,

King³

1936

J. Clin. Invest.

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Salkin (1) has recently studied normal physiological changes which occur in the abdominal cavity. He has described a process of adaptability in the abdominal muscles which tends to prevent changes in intra-abdominal pressure, and which he terms " abdominal accommodation." He considers this process to be a reflex mechanism dependent upon an intact neuromuscular system, and points out the clinical bearing on intraperitoneal conditions, and functional interrelationship between the pleural and peritoneal cavities. Previous attempts to obtain measurements of abdominal pressure have been accompanied by difficulties (2, 3, 4). When fluid is injected at a certain rate into the abdominal cavity hyperbolic curves are obtained in which the pressure rise is slow at first and then becomes more rapid.Although the physiology of the intra-abdominal pressure and tension of the abdominal wall has been studied in considerable detail, its relation to pressure within the pleural cavity has been insufficiently considered.Recent clinical observations by Gordon (5) have indicated the importance of change in abdominal pressure upon function of the thorax. He found that elevation of intra-abdominal pressure during pregnancy apparently influenced the course of chronic pulmonary diseases. In cases of chronic tuberculosis and bronchiectasis, cough, shortness of breath, and excessive sputum were diminished. He attributed the improvement to an increase of the intra-abdominal pressure, which in turn caused elevation of the leaves of the diaphragm.It has also been shown by Alexander and Kountz (6) that the vital capacity of an individual with chronic pulmonary emphysema may be improved by the application of an abdominal belt, which is believed to increase the intra-abdominal pressure and the tension of the abdominal wall. EXPERIMENTALTo study the influence of abdominal conditions upon intrabronchial and intrapleural pressure, experiments were made upon animals. A bronchoscope was introduced, small hollow copper tubes were inserted into the lower bronchus on each side and were arranged by means of interchangeable tips to occlude the bronchus except for its connection with the lumen of the tube. Rubber tubing was connected to the copper tubes and, by means of a tambour and lever, records on a moving drum were made. Because of secretion, which was partially controlled by atropine, and because of slight movements of the tips, precautions were necessary to assure free excursion with each respiration.An important part of the study was to determine the effect of cough. This was induced by blowing cigarette smoke directly into the trachea of the partially anesthetized animals. Anesthesia, which consisted of morphine in doses of one and one-half grains with ether only sufficient to permit the passage of the bronchoscope, did not abolish the cough reflex. Measurements of intratracheal, intrapleural, and intra-abdominal pressures could thus be recorded following cough under varying conditions. For determination of intrapleural pressure two large number fo...

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Studies on Intra-Abdominal Pressure. I. Negative Intra-Abdominal Pressure as a Normal Condition

Cited by 21 publications

References 0 publications

Effect of Laparotomy on the Swallow–Breathing Relationship in the Cat

Effect of Laparotomy on the Swallow–Breathing Relationship in the Cat

Transmural Pressure of the Urinary Bladder Wall

The Influence of Changes of Abdominal Tension Upon Pulmonary Function

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