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Derks C M - - 1980
Ventilation (VA) perfusion (Q) ratios distribution measured by the inert gases method is studied in 7 anesthetized dogs in supine position, in prone position at a respiratory frequency of 15 cpm, and in prone position at a respiratory frequency of 10 cpm so as to test the sensitivity of this ...
Marx G F - - 1980
In 202 young primigravidas, right-sided brachial and femoral arterial pressures were recorded in both supine and left lateral positions during prenatal visits in the second and third trimesters. Roll-over tests were performed in 78 of these. Position-related falls predominantly in femoral artery pressure--indicative of aortic compression-were demonstrable earlier and with ...
Williams H L - - 1980
We describe a radiochemical method for measuring ferrochelatase activity in the in vitro incorporation of iron into mesoporphyrin-IX to form mesoheme. 59Fe is used to quantify ferrochelatase activity in rat liver. The uptake of iron is linearly related to the time allowed for it to occur, and the reaction proceeds ...
Dalrymple D G - - 1979
The cardiorespiratory effects of raising patients from the supine to the sitting position for neurosurgery were investigated. The change caused marked decreases in cardiac index, stroke volume, PaO2 and Qs/Qt, with a significant increase in (PAO2-PaO2) and total peripheral resistance. It is concluded that patients who maintain normotension in the ...
Esserman L - - 1979
In order to estimate the effect of position on blood pressure measurements during the first year of life, pressures were recorded for 71 infants at one, three, six and twelve months of age in both the propped and lying positions. The position of the infant appeared to have little effect ...
Pollock V - - 1979
Spontaneously occurring mood states and various physiological indices were evaluated on three occasions in a group of eight healthy males. Results reveal that significant positive correlations exist among five of the six factors comprising the Profile of Mood States (POMS). This finding is related to previous research on the POMS ...
Fry E N - - 1979
A technique of postoperative analgesia using continuous intravenous papaveretum with a dosage derived from previous intravenous titration is described. Hourly pain scores, pulse and respiration rates, and blood pressure readings were recorded. The patients were followed up until discharge from hospital. The nature and incidence of various complications were noted.
Laha R K - - 1979
Does cerebellar retraction during operations in the posterior fossa contribute to increased morbidity and mortality, and if so, what are the critical factors involved? In order to answer these questions, graded retractor pressures of 10, 20, and 30 mm Hg were applied for one hour to the cerebellar hemispheres of ...
Aquilani R - - 1979
The effect of diaphragmatic respiration in broncopneumopathic patients has been investigated. By using a computerized method of analysis, VO2, VCO2, VE, VA and several other respiratory and metabolic parameters have been investigated. The results obtained in these patients, at rest, have shown that particularly in supine position the abdominal respiration ...
Didolkar S M - - 1979
Eighty-five women at 28-36 weeks' gestation were studied prospectively in a clinical research center to assess a "roll over test" (RT) based on the original study by Gant et al. Patients were admitted to the hospital, placed on bed rest, and given a balanced diet. The test started 12 hours ...
Dutton R E - - 1979
Functional residual capacity (FRC) was measured in 12 postoperative patients and in one preoperative patient before and after they received intermittent positive pressure breathing (IPPB) with room air for ten minutes at a peak delivered pressure of 15 cm H2O. Ten patients had a normal or low pretreatment FRC. After ...
Wagaman M J - - 1979
Fourteen intubated infants recovering from neonatal respiratory disease had arterial blood gases and lung mechanics measured in the supine position and in two variants of the prone position. Prone positioning resulted in significant increases in mean (+/- SEM) arterial oxygen tension (Pa(o2 70.4 +/- 2.5 to 81.1 +/- 4.4mm Hg), ...
Bloomfield P - - 1979
A double-blind crossover trial was carried out during 22 episodes of life-threatening asthma in 19 patients to compare salbutamol given as a 500 microgram intravenous injection and as a 0 . 5% solution administered by intermittent positive-pressure breathing (IPPB) for three minutes. Relief of pulsus paradoxus was significantly better after ...
Dev N B - - 1979
1. Acetylcholine and nicotine were superfused on the ventral medullary surface between the ponto-medullary border and C1 in anaesthetized cats in order to determine the topical distribution of their actions on respiration and circulation. 2. Acetylcholine (10(-4) g . ml-1 = 5.5 . 10(-4) mMol . ml-1) produced an increase ...
Clement D L - - 1979
In this paper a number of techniques are described that provide information concerning the functional disturbances caused by anatomic lesions within the vascular system in patients with intermittent claudication. These techniques are part of a currently growing entity that is called the "Vascular Laboratory". Main characteristics of these techniques are ...
Schaefer K E - - 1979
Circadian rhythms of body temperatures, pulse rate, and respiration rate were measured in 11 subjects every 4 h during certain periods on two submarine patrols. Data on systolic and diastolic blood pressure were also obtained on five crew members during the first period. All the subjects of the first patrol ...
Dubach U C - - 1979
The acute effects of therapeutic doses of intravenous tolbutamide and glibornuride on the systolic time intervals (QS2c, LVETc, PEPc and PEP/LVET) were examined in 5 healthy volunteers. Blood sugar was maintained constant throughout the study. No significant changes of these intervals as well as of heart rate and blood pressure ...
De Backer G - - 1979
Epidemiological information on the prevalence, incidence and natural history of intermittent claudication and peripheral vascular disease is limited, partially by the limitation of techniques of their study. The available data from the literature are review and supplemented by results from an on-going survey the ankle blood pressure measurement with Doppler ...
Atherton S T - - 1978
10 adults had intermittent positive-pressure ventilation for 3--34 days. All 10 had paralytic ileus. Microbial overgrowth in the stomach was found in 9 patients (bacterial in 7 and fungal in 2); gram-negative bacteria predominated. The trachea invariably became colonised by bacteria, mainly gram-negative organisms. In 3 instances the gram-negative bacteria ...
Rick J J - - 1978
Massumi, in 1973, presented three distinct clinical conditions in which he described a reversal of the expected variations of blood pressure relative to respiratory activity. He termed this phenomenon reverse pulsus paradoxus. One of his cases was a patient with congestive heart failure receiving intermitten positive pressure ventilation (IPPV). The ...
Toung T J - - 1978
The effects of increasing levels of positive end expiratory pressure on gas exchange and pulmonary mechanics were determined utilizing an ex vivo ventilated perfused canine pulmonary lobe. When zero positive end expiratory pressure was used, shunting, weight gain and a decrease in compliance occurred over the four and one-half hour ...
Elberg A J - - 1978
Nitroprusside was used with intermittent hemodialysis over a 26-day period in a 6-year-old boy with intractable hypertension. Hemodialysis effectively removed thiocyanate from the blood, thus preventing its accumulation and subsequent toxic manifestations. Prolonged nitroprusside infusion maintained arterial blood pressure at acceptable levels until the patient became responsive to other antihypertensive ...
Graham W G - - 1978
We undertook a randomized clinical trial to evaluate the efficacy of chest physiotherapy and intermittent positive-pressure breathing in the treatment of pneumonia. The diagnosis of pneumonia required a compatible clinical history and x-ray confirmation. A total of 54 patients were assigned to treatment and control groups and were similar in ...
Cayton R M - - 1978
Salbutamol was given by pressure-packed aerosol or nebulizer via IPPB to patients with acute asthma to compare the effectiveness of these methods of inhalation. The results show that both methods produce significant bronchodilatation even in patients admitted with moderately severe asthma (FEV1 about 38% predicted) but a slightly greater improvement ...
Verstappen F T - - 1978
In the present study the influence of body position on the effects of venous gas infusion was examined. The body position of anesthetized dogs ventilated artifically varied between supine, right-side-down and left-side-down position. Without venous gas infusion the change of body position hardly affected pulmonary arterial pressure (Pap) and alveolar ...
Hayes D - - 1978
The respiration of ten adults with normal hearing was monitored to determine how well changes in respiration could be detected after auditory stimulation. Three judges used two methods of response scoring. The first was without knowledge of signal presentation, and the second was with knowledge of signal presentation. Judges detected ...
Ohlson L - - 1978
The pregnant uterus was found to exert pressure upon the lumbar region with a maximum over the midline of the lordosis and diminishing laterally. Those parts of the arterial system formed by the aorta and its dorsal branches and displaceable at autopsy, were accordingly dislodged by the uterus, whereas the ...
Klein E - - 1977
Immediate emergency surgery is the accepted treatment of intractable pulmonary edema due to valvular heart disease. The presence of severe tissue hypoxia, acidosis, low cardiac output state and renal insufficiency results in a high operative risk. Delay of operation by several hours may prove advantageous in that it permits improvements ...
McCarthy J D - - 1977
The accuracy of operative cholangiograms can be increased by radiomanometry. This study identified 17 patients among 198 studied whose choledocholiths would have likely been missed by routine cholangiography. These are almost invariably small stones the fate of which would be conjectural if left behind. In the present study, if the ...
Moore C D - - 1977
Fifteen patients with closed fractures of the distal tibia and fibula had marked elevation of initial compartment pressures. The pressures remained elevated for five days in the ten patients treated by cast and elevation. The pressures returned to normal within 24 hours in the five patients placed in a prototype ...
Phelan J P - - 1977
Both the impact of the mean arterial pressure of the second trimester (MAP-2) on the development of pregnancy-induced hypertension (PIH) and the accuracy of the supine pressor test (SPT) for the prediction of PIH have been demonstrated. Despite good over-all predictability of the SPT, a large percentage of false positive ...
Heifetz M - - 1977
We describe a new technique for diagnostic fiberoptic bronchoscopic procedures under general anesthesia. The technique of inflation via nasotracheal catheter, which consists of using intermittent high inflating pressure for ventilation by passing a double catheter through the nose to the glottis and into the trachea, gave very satisfactory ventilaton, with ...
Paterson I C - - 1977
1. Using the same technique of administering drugs by intermittent positive-pressure ventilation as used in previous studies a source of contamination of solutions nebulized was discovered. This was rectified by using a new ventilator and completely separate patient circuits for each solution nebulized. 2 Salbutamol 0.5% and 0.25% solutions achieved ...
Scharf S M - - 1977
The role of changes in abdominal pressure and sympathetically mediated vasoconstriction in the cardiovascular response to positive end-expiratory pressure was evaluated in 9 mongrel dogs. When the abdomen was widely opened, the decrease in cardiac output caused by positive end-expiratory pressure was the same as that found during control studies. ...
Loren M - - 1977
Tweinty-three asthmatic children had severe sudden bronchospasm due to numerous factors. Baseline values for the peak expiratory flow rate were less than 25 percent of predicted. Utilizing an analysis of variance, three methods of administering isoproterenol hydrochloride (hand-held Freon-propelled nebulization, continuous nebulization, and intermittent positive-pressure breathing [IPPB]) were compared and ...
Dormandy J A - - 1977
Fifteen patients with severe intermittent claudication were treated by therapeutic defibrination with subcutaneous injections of ancrod for 5 weeks. Mean plasma-fibrinogen was maintained below 50% of the initial value throughout the treatment period. This reduction in plasma-fibrinogen was accompanied by a parallel fall in whole-blood viscosity and a pronounced clinical ...
Itabisashi T - - 1977
Changes in electrocardiograms, blood pressure, pH, and partial pressure of gases (Po2 and Pco2) in arterial blood were studied in goats poisoned by urea or ammonium compounds under spontaneous and artificial respiration and in nonconvulsive state. Abnormal electrocardiogram patterns, such as ventricular flutter, ventricular premature beat, atrioventricular dissociation, depression of ...
Furuta K - - 1976
Effect of formaldehyde liberated from formalin on disinfection of the surface of a filtered air under positive pressure (FAPP) house and the surface of equipment placed in the house was studied. Escherichia coli, Staphylococcus aureus and avian adenovirus were used in this study as a indicator to evaluate degree of ...
Kosiak M - - 1976
This study demonstrates the potential effectiveness of a dynamic resting surface which, at regular intervals, provides sitting patients complete relief of pressure for short periods of time. Resting pressure extremes ranged from 0 mm Hg to 160 mm Hg, depending on the position of the roller supports. At all positions, ...
Hedenstierna G - - 1976
The immediate effects of intermittent positive pressure breathing (IPPB) on air were studied in seven patients (age 55-73 years) with advanced chronic obstructive lung disease (COLD) and with chronic respiratory insufficiency. Dynamic lung compliance was reduced by an average of 25% by IPPB, while inspiratory resistance increased by 40%. Distribution ...
Cortese D A - - 1976
The effect of posture on phase III (alveolar nitrogen plateau) and phase IV (closing capacity) of the single-breath oxygen test was examined in 10 normal people. In part 1 of the study, subjects inspired and expired in the standing, supine, prone, and right lateral decubitus positions; there was no effect ...
Remmers J E - - 1976
We have constructed an electronically controlled respirator from three commercially available components: a positive-pressure ventilator, a recorder pen motor, and a differential amplifier. Using negative feedback derived from a tracheal pressure signal, the instrument functions as a servo respirator which provides precise control of tracheal pressure. The system's power and ...
Deen L - - 1976
In ventilated anaesthetized rabbits the relationship between the oesophageal pressure and the intrapleural pressure, measured with an air-filled balloon system, was studied. A balloon 15 mm long and 3 mm diameter detected 95% of the measured intrapleural pressure, provided the balloon was positioned accurately. In babies undergoing IPPV, the best ...
Larsson L E - - 1976
Blood pressure and heart rate at rest in the supine and standing positions were followed before, during and after irradiation for malignant tumours in 114 patients. A statistically significant gradual reduction in blood pressure during the treatment period was established. This was more marked in older patients and in patients ...
Fouts J B - - 1976
There are relatively few valid indications for the use of intermittent positive-pressure breathing (IPPB). It is of limited or no value as prophylaxis of postoperative pulmonary problems (pneumonia, atelectasis) or as a means of delivering aerosol medications or treating stable chronic obstructive pulmonary disease. In these situations, IPPB has few ...
Woollam C H - - 1976
The history of tank and cuirass respirators from the first known use of the intermittent negative pressure principle in 1832 to 1918, on the threshold of its extensive use in the treatment of respiratory paralysis, has been related. A second article will consider the period 1918 to the present day ...
Suonio S - - 1976
The placental blood flow was assessed by the 99mTc accumulation method in 10 normal pregnancies in the left lateral recumbent position accomplished by a 15 degree wedge and in the supine position. The postural change caused a 17% decrease in the mean placental accumulation rate, which was not statistically significant. ...
Masman A R - - 1976
This paper describes the use of intermittent pressure to reduce oedema of the limbs by assisting resorption. The rationale of the method is outlined with emphasis on the management of traumatic oedema. A safe, simple and inexpensive device to effect the intermittent pressure is described. The results of clinical trials ...
Mortensen S O - - 1976
Electrophysiological studies of ureteral function in a patient with right ovarian vein syndrome demonstrated intermittent antiperistalsis as reflected from pre-operative endoureteral activity recordings. The antiperistalsis was related to the patient intermittent right flank pain. Per-operative EMG and pressure measurements revealed that the antiperistalsis apparently arose from the area of obstruction ...
Henderson-Smart D J - - 1975
The occurrence of massive air embolism in a neonate during treatment with intermittent positive-pressure respiration and positive end expiratory pressure is reported as a note of caution. It is possible that this complication may indeed be more common. Careful post-mortem examinations (including radiological examinations) are advocated in order that the ...
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