Indicator of maximum-pressure changes in artificial pulmonary ventilation

1968 ◽  
Vol 2 (1) ◽  
pp. 8-10
Author(s):  
L. I. Nemerovskii ◽  
R. I. Gorokhovskaya
Keyword(s):  
Pulmonary Ventilation ◽  
Maximum Pressure ◽  
Artificial Pulmonary Ventilation ◽  
Pressure Changes

scholarly journals Induction of Changes in Internal Gas Pressure of Bulky Plant Organs by Temperature Gradients

1990 ◽  
Vol 115 (2) ◽  
pp. 308-312 ◽  
Author(s):  
Kenneth A. Corey ◽  
Zhi-Yi Tan
Keyword(s):  
Bath Temperature ◽  
Ideal Gas ◽  
Gas Pressure ◽  
Temperature Gradients ◽  
Maximum Pressure ◽  
Plant Organs ◽  
Ideal Gas Law ◽  
Increasing Temperature ◽  
Pressure Changes

Water manometers were connected to fruits of tomato (Lycopersicon esculentum Mill.) and pepper (Capsicum annuum L.), and then fruits were submerged in water baths providing initial temperature gradients between fruit and water of 0 to 19C. Apple (Malus domestics Borkh.) fruits, carrot (Daucus carota L.) roots, witloof chicory (Cichorium intybus L.) roots, rhubarb Rheum rhabarbarum L.) petioles, and pokeweed (Phytolacca americana L.) stems were subjected to water bath temperature gradients of 5C. Internal partial vacuums developed in all organs within minutes of imposing the gradients. The maximum partial vacuums in tomato and pepper fruits increased with increasing temperature gradients. Uptake of water accompanied changes in internal pressure reaching maxima of 17% (w/w) and 2% (w/w) of pepper and tomato fruits, respectively, after 22 hours. Maximum pressure changes achieved in bulky organs deviated from those predicted by the ideal gas law, possibly due to concomitant changes in gas pressure upon replacement of intercellular spaces with water and dissolution of CO2. Partial vacuums also developed in pepper fruits, rhubarb petioles, and pokeweed stems following exposure to air 15C cooler than initial organ temperatures. Results point to the role of temperature gradients in the transport of liquids and gases in plant organs.

Subcutaneous tissue gas space pressure during superficial isobaric counterdiffusion

1979 ◽  
Vol 47 (1) ◽  
pp. 224-227 ◽  
Author(s):  
J. R. Cowley ◽  
C. Allegra ◽  
C. J. Lambertsen
Keyword(s):  
Gas Phase ◽  
Subcutaneous Tissue ◽  
Inert Gas ◽  
Maximum Pressure ◽  
Tissue Pressure ◽  
Phase Development ◽  
New Zealand White Rabbits ◽  
Gas Space ◽  
Pressure Changes ◽  
Mean Time

Changes in subcutaneous tissue pressure caused by N2O-He, 1-ATA isobaric counterdiffusion gas phase development were measured. Only the ears of New Zealand White rabbits were subjected to counterdiffusion. The rabbits breathed a mixture of 80% N2O-20% O2 while their ears alone were surrounded by He and the rest of their bodies continued to be surrounded by air. Subcutaneous pressure changes were transmitted to the transducer-recorded system via a fluid-filled subcutaneous needle. When the gas phase developed in subcutaneous tissue, pressure rose and a maximum pressure (Pmax) was reached. Pmax in the counterdiffused ear was 48 +/- 10 (SD) Torr, and mean time to reach Pmax was 75 +/- 10 (SD) min. The findings are discussed in relation to the pathological processes of isobaric inert gas counterdiffusion.

Comparison of responses to CO2 under the conditions of natural respiration and controlled artificial pulmonary ventilation

2006 ◽  
Vol 32 (4) ◽  
pp. 440-444
Author(s):  
M. A. Pogodin ◽  
M. P. Granstrem ◽  
A. I. Dimitrienko
Keyword(s):  
Pulmonary Ventilation ◽  
Artificial Pulmonary Ventilation

scholarly journals Nudegimų gydymas pasireiškus bakteriemijai

2005 ◽  
Vol 3 (1) ◽  
pp. 0-0
Author(s):  
Kristina Vostrugina ◽  
Daiva Gudavičienė ◽  
Rytis Rimdeika
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Therapy ◽  
Plastic Surgery ◽  
Pulmonary Ventilation ◽  
Age Factors ◽  
Multiple Organ ◽  
Parenteral Feeding ◽  
Burned Area ◽  
Hospital Department ◽  
Artificial Pulmonary Ventilation

Kristina Vostrugina, Daiva Gudavičienė, Rytis RimdeikaKauno medicinos universiteto klinikųPlastinės chirurgijos ir nudegimų skyrius,Eivenių g. 2, LT-50009 KaunasEl paštas: [email protected] Tikslas Ištirti 1999–2003 m. Kauno medicinos universiteto klinikų Plastinės chirurgijos ir nudegimų skyriaus ligonių, kuriems patvirtinta bakteriemija, gydymo aspektus. Ligoniai ir metodai Atlikta retrospektyvi 82 nudegusių ligonių, kuriems patvirtinta bakteriemija, ligos istorijų analizė. Vertintas pacientų amžius, nudegimą sukėlę veiksniai, nudegimo plotas, kvėpavimo takų nudegimas. Analizuota, kokiam skaičiui pacientų reikėjo kateterizuoti centrines venas, prireikė dirbtinės plaučių ventiliacijos, enterinio ar parenterinio maitinimo, kokių radosi komplikacijų, kokie mikroorganizmai išaugo žaizdų pasėliuose ir toks jų sutapimas su kraujo pasėlių duomenimis, nagrinėti antibiotikų terapijos aspektai. Rezultatai Pacientų, kuriems patvirtinta bakteriemija, vidutinis amžius buvo 50 metų, standartinis nuokrypis – 16. Vyravo nudegimai liepsna (82%) ir skysčiais (8,5%). Vidutinis nudegusio kūno paviršiaus plotas buvo 29%, standartinis nuokrypis – 19. Centrines venas reikėjo kateterizuoti 78% pacientų. Dirbtinės plaučių ventiliacijos prireikė 13% pacientų. Enterinis maitinimas skirtas 48% pacientų, parenteriniu būdu maitinta 90% ligonių. Pneumonija nustatyta 29% pacientų, kardiovaskulinis nepakankamumas – 15%, dauginis organų funkcijos nepakankamumas – 13%, inkstų funkcijos nepakankamumas – 7% ligonių. Visais atvejais sutapo žaizdos ir kraujo pasėlių duomenys, kai iš kraujo išaugo Pseudomonas aeruginosa, 87% – kai išaugo meticilinui atsparus Staphylococcus aureus ir 74% – kai išaugo meticilinui jautrus S. aureus. Antibiotikais gydyta 80 ligonių, dažniausiai penicilinu, gentamicinu ir vankomicinu. Išvados Bakteriemija dažnai nustatoma didelius plotus nudegusiems ligoniams, kuriems tenka kateterizuoti centrines venas, skirti parenterinį maitinimą. Dažniausiai iš kraujo mėginių išauga tie mikroorganizmai, kurie auga žaizdų pasėliuose. Reikšminiai žodžiai: nudegimai, bakteriemija, antibiotikų terapija Treatment of burned patients with diagnosed bacteremia Kristina Vostrugina, Daiva Gudavičienė, Rytis RimdeikaKaunas University of Medicine Hospital,Department of Plastic Surgery and Burns,Eivenių str. 2, LT-50009 Kaunas, LithuaniaE-mail: [email protected] Objective The aim of the study was to investigate the aspects of treatment of burned patients with confirmed bacteremia treated at Kaunas University of Medicine Hospital Department of Plastic Surgery and Burns during 1999–2003. Patients and methods A retrospective analysis of case histories of 82 burned patients with confirmed bacteremia was performed. The evaluated factors included the patients’ age, factors that caused the burns, the burned area, and burns of the airways. We also analyzed how many patients required catheterization of the central veins, artificial pulmonary ventilation, enteral or parenteral feeding, and complications, as well as what microorganisms grew in wound crops, how many cases corresponded to the blood crop findings, and the aspects of antibiotic therapy. Results Mean age of patients with confirmed bacteremia was 50 years, standard deviation (SD) – 16. Flame burns (82%) and scalds (8.5%) predominated. Mean burned body surface area was 29%, SD – 19. 78% of patients required catheterization of central veins, and 13% – artificial pulmonary ventilation. 48% of patients were fed enterally, and 90% – parenterally. 29% of patients had pneumonia, 15% – cardiovascular insufficiency, 13% – multiple organ failure, and 7% – renal failure. The coincidence of the findings of wound and blood crops was 100% in cases of Pseudomonas aueruginosa growth, 87% – in cases of methicillin-resistant Staphylococcus aureus growth, and 74% – in cases of methicillin-sensitive Staphylococcus aureus growth. 80 patients received antibiotics, mostly penicillin, gentamicin, and vancomycin. Conclusions Bacteremia was very common among extensively burned patients requiring catheterization of the central veins and parenteral feeding. In most cases, microorganisms that grew in wound crops also grew in blood samples. Key words: burns, bacteremia, antibiotic therapy

ARTIFICIAL NOSE VENTILATION IN PATIENTS WITH SEVERE COMBINED HEAD INJURY WITH ARTIFICIAL PULMONARY VENTILATION

2017 ◽  
Vol 86 (1) ◽  
pp. 36-41
Author(s):  
V. S. Isachenko ◽  
◽  
D. M. Il’yasov ◽  
A. M. Mel’nik ◽  
V. Yu. Ovchinnikov ◽  
...  
Keyword(s):  
Head Injury ◽  
Pulmonary Ventilation ◽  
Artificial Nose ◽  
Artificial Pulmonary Ventilation

Special devices for supportive artificial pulmonary ventilation

1973 ◽  
Vol 7 (3) ◽  
pp. 166-168
Author(s):  
A. B. Gruzman ◽  
V. M. Yurevich
Keyword(s):  
Pulmonary Ventilation ◽  
Artificial Pulmonary Ventilation
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