Abdominal compliance

2015 ◽  
Vol 78 (5) ◽  
pp. 1044-1053 ◽  
Author(s):  
Annika Reintam Blaser ◽  
Martin Björck ◽  
Bart De Keulenaer ◽  
Adrian Regli
Keyword(s):  
Abdominal Compliance

scholarly journals Polynomial Regression Model Analysis of Abdominal Wall Tension and Intra-abdominal Pressure in Critically ill Patients

2021 ◽  
Author(s):  
Hao Tang ◽  
Dongchu Zhao ◽  
Chuan Zhang ◽  
Xiaoying Huang ◽  
Dong Liu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Regression Model ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Polynomial Regression ◽  
Prognostic Indicators ◽  
Wall Tension ◽  
Abdominal Hypertension ◽  
Abdominal Compliance ◽  
Polynomial Regression Model

Abstract BackgroundAbdominal wall tension (AWT) plays an important role in the pathogenesis of abdominal compliance (AC). This study uses a polynomial regression model to analyze the correlation between intra-vesical pressure(IVP) and AWT in critically ill patients and provides new ideas for the diagnosis and treatment of critically ill patients with intra-abdominal hypertension（IAH）.MethodsA retrospective analysis was conducted in critically ill patients who met the inclusion criteria and were admitted to the Department of intensive care unit of Daping Hospital of Army Medical University from March 14, 2019, to May 23, 2020. According to the IVP on the first day of ICU admission and death within 28 days, the patients were divided into the IAH group (IVP ≥12 mmHg), the non-IAH group, the survival group and the nonsurvival group. The demographic and clinical data, prognostic indicators, AWT and IVP on days 1-7 after entering the ICU, IAH risk factors, and 28-day death risk factors were collected.ResultsA total of 100 patients were enrolled, with an average age of 45.59±11.4 years. There were 55 males (55%), 30 patients from departments of internal medicine (30%), 43 patients from surgery departments (43%), and 27 trauma patients (27%). In the IAH group, there were 50 patients (29 males, 58%), with an average age of 45.28±12.27 years; there were 50 patients (26 males, 52%) in the non-IAH group, with an average age of 45.90±10.58 years. The IVP on the 1st day and the average IVP within 7 days of the IAH group was 18.99（17.52，20.77）mmHg and 19.43（16.87，22.25）mmHg, respectively, which was higher than that of the non-IAH group [ 6.14（3.48，8.70）mmHg, 6.66（2.74，9.08）mmHg], p＜0.001. The AWT on the 1st day and the average AWT within 7 days of the IAH group was 2.89±0.32 N/mm and 2.82±0.46 N/mm, respectively, which was higher than that of the non-IAH group [(2.45±0.29)N/mm,(2.43±0.39)N/mm],p＜0.001.The polynomial regression models showed that the average AWT and IVP on the 1st day and within 7 days were AWTday1 = -2.450×10-3IVP2+9.695×10-2 IVP+2.046，r=0.667（p＜0.0001），and AWTmean = -2.293×10-3IVP2+9.273×10-2 IVP+2.081, respectively. The logistic regression analysis showed that AWTday1 of 2.73-2.97 N/mm increased the patient's 28-day mortality risk (OR: 6.834; 95%: 1.105-42.266, p=0.010).ConclusionsThere is a nonlinear correlation between AWT and IVP in critically ill patients, and a high AWT may indicate poor prognosis.

Decreased abdominal compliance

2013 ◽  
pp. 59-68
Author(s):  
Manu Malbrain ◽  
Jan De Waele
Keyword(s):  
Abdominal Compliance

Preliminary results of the thoracic and abdominal compliance in children on different ventilatory programs

2009 ◽  
Vol 12 (sup1) ◽  
pp. 39-40
Author(s):  
F. Bermond ◽  
K. Bruyere ◽  
F. Alonzo ◽  
A. Stagnara ◽  
D. Poirot ◽  
...  
Keyword(s):  
Preliminary Results ◽  
Abdominal Compliance ◽  
Thoracic And Abdominal

scholarly journals The neglected role of abdominal compliance in organ-organ interactions

Critical Care ◽  
2016 ◽  
Vol 20 (1) ◽  
Author(s):  
Manu L. N. G. Malbrain ◽  
Yannick Peeters ◽  
Robert Wise
Keyword(s):  
Abdominal Compliance

scholarly journals Mechanical advantage of the canine diaphragm

1998 ◽  
Vol 85 (6) ◽  
pp. 2284-2290 ◽  
Author(s):  
Theodore A. Wilson ◽  
Aladin M. Boriek ◽  
Joseph R. Rodarte
Keyword(s):  
Lung Volume ◽  
Three Dimensional ◽  
Mechanical Advantage ◽  
Supine Posture ◽  
Abdominal Compliance ◽  
Lower Lung ◽  
Residual Capacity ◽  
Radiopaque Markers ◽  
Crural Diaphragm ◽  
Prone Posture

The mechanical advantage (μ) of a respiratory muscle is defined as the respiratory pressure generated per unit muscle mass and per unit active stress. The value of μ can be obtained by measuring the change in the length of the muscle during inflation of the passive lung and chest wall. We report values of μ for the muscles of the canine diaphragm that were obtained by measuring the lengths of the muscles during a passive quasistatic vital capacity maneuver. Radiopaque markers were attached along six muscle bundles of the costal and two muscle bundles of the crural left hemidiaphragms of four bred-for-research beagle dogs. The three-dimensional locations of the markers were obtained from biplane video-fluoroscopic images taken at four volumes during a passive relaxation maneuver from total lung capacity to functional residual capacity in the prone and supine postures. Muscle lengths were determined as a function of lung volume, and from these data, values of μ were obtained. Values of μ are fairly uniform around the ventral midcostal and crural diaphragm but significantly lower at the dorsal end of the costal diaphragm. The average values of μ are −0.35 ± 0.18 and −0.27 ± 0.16 cmH2O ⋅ g−1 ⋅ kg−1 ⋅ cm−2in the prone and supine dog, respectively. These values are 1.5–2 times larger than the largest values of μ of the intercostal muscles in the supine dog. From these data we estimate that during spontaneous breathing the diaphragm contributes ∼40% of inspiratory pressure in the prone posture and ∼30% in the supine posture. Passive shortening, and hence μ, in the upper one-third of inspiratory capacity is less than one-half of that at lower lung volume. The lower μ is attributed primarily to a lower abdominal compliance at high lung volume.

Respiratory variation of intra-abdominal pressure: indirect indicator of abdominal compliance?

2008 ◽  
Vol 34 (9) ◽  
pp. 1632-1637 ◽  
Author(s):  
Evelina Sturini ◽  
Andrea Saporito ◽  
Michael Sugrue ◽  
Michael J. A. Parr ◽  
Gillian Bishop ◽  
...  
Keyword(s):  
Abdominal Pressure ◽  
Respiratory Variation ◽  
Abdominal Compliance ◽  
Indirect Indicator

The urinary bladder compliance is different from the abdominal compliance

2008 ◽  
Vol 25 (Sup 44) ◽  
pp. 43-44
Author(s):  
J. Mulier ◽  
B. Dillemans ◽  
G. Segers ◽  
I. Casier ◽  
F. Akin
Keyword(s):  
Urinary Bladder ◽  
Bladder Compliance ◽  
Abdominal Compliance

NEUMOPERITONEO PROGRESIVO PREOPERATORIO PARA REPARO DE HERNIA INCISIONAL CON PÉRDIDA DE DOMINIO: REPORTE DE UN CASO.

2020 ◽  
Vol 31 (1) ◽  
Author(s):  
Ronnal Vargas Córdova ◽  
Christian Rojas ◽  
Bolívar Cárdenas ◽  
Diana Naveda ◽  
David Narváez ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Abdominal Wall ◽  
Muscle Atrophy ◽  
Abdominal Sepsis ◽  
Lower Probability ◽  
Repair Technique ◽  
Surgical Recurrence ◽  
Abdominal Hypertension ◽  
Abdominal Compliance ◽  
Transverse Muscle

Incisional hernias with loss domain (HIPD), has a prevalence between 5 - 20%, due to its technical complexity are a challenge for abdominal wall surgeon, because decrease in abdominal compliance, for muscle atrophy and retraction, as well as complications associated with the procedure. We present the preoperative use of progressive pneumoperitoneum (NPP), as a technique for preparing the abdominal wall, by placing a multipurpose permanent catheter (pig tail type) guided by computed tomography, for a 69-year-old male patient, farmer, and colostomy carrier. by sigma volvulus, which presented abdominal sepsis secondary to anastomosis dehiscence, which led to a colostomy, and HIPD formation of 25 x 15 cm. The benefits of NPP are: it reduces the size of the second cavity formed, facilitates the placement of the mesh, reduces the tension in the closure of the abdominal wall and the development of intra-abdominal hypertension syndrome, therefore a lower probability of post-surgical recurrence. The repair technique used was release of the transverse muscle of the abdomen (TAR), which is indicated in HIPD. CONCLUSIONS. HIPD repair is technically difficult because compliance of the abdominal wall is affected, even more so in our case due to the presence of a colostomy. Optimization of the preoperative abdominal wall with the progressive pneumoperitoneum technique plus the TAR technique is one of the valid options available to achieve this goal.

Effect of microgravity on the respiratory system

1991 ◽  
Vol 70 (5) ◽  
pp. 1907-1911 ◽  
Author(s):  
L. A. Engel
Keyword(s):  
Regional Blood Flow ◽  
Regional Distribution ◽  
Flow Distribution ◽  
Repeated Measurements ◽  
Abdominal Girth ◽  
Functional Changes ◽  
Single Breath ◽  
Abdominal Compliance ◽  
Maximum Expiratory Flow ◽  
Residual Capacity

Because the pleural pressure gradient and regional distribution of pulmonary function are gravity dependent, substantial changes may be expected during weightlessness. Although very few measurements have been made during spaceflights, a number of observations during brief periods of weightlessness inside aircraft flying with parabolic trajectories confirm these predictions. Single-breath N2 washouts suggest a marked reduction in the inequality of ventilation distribution seen at 1 G. Similarly, inferences made from cardiogenic oscillations during single-breath washouts suggest a greater uniformity of perfusion during weightlessness. This is supported by changes seen on chest radiographs as well as by more direct measurements of regional blood flow distribution using radioactive iodine-labeled macroaggregates. Vital capacity is only slightly reduced, but functional residual capacity decreases by approximately 10% and maximum expiratory flow rates are slightly decreased, especially at low lung volumes. Weightlessness decreases abdominal girth, increases abdominal compliance, and substantially increases the abdominal contribution to tidal volume during resting breathing. Despite these changes, there does not appear to be any alteration in the temporal pattern of breathing. However, the deposition of inhaled medium-sized aerosol particles is substantially reduced, as predicted by model analyses of gravitational sedimentation. Virtually all these observations describe effects at the very onset of weightlessness. Practically nothing is known of slower functional changes and adaptations to prolonged weightlessness. Systematic repeated measurements during manned spaceflights will hopefully begin to provide some information on this subject in the near future.

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