CO intoxication, by producing cerebral hypoxia-ischaemia, may trigger neuropathological events which result in delayed neurological relapse even in patients whose earlier clinical course has appeared deceptively benign. The physician's index of suspicion must therefore be high, and it should be remembered that, even in major CO exposures, blood COHb levels ...

The blood of people living near the River Elbe who eat contaminated fish from the river was checked for organochlorines (n = 136): Hexachlorobenzene, HCB, the Hexachlorocyclohexanes beta-HCH, gamma-HCH, Octachlorostyrene, OCS, p,p-DDE and Mercury, Hg (n = 43). The concentrations (ng/ml blood) of OCS (less than 0.5-9.2) and Hg (1.1-79.2) ...

The basic pattern of body water exchange was studied in four Japanese male divers during exposure to a thermoneutral 31 ATA (He-O2) environment for 3 d (Seadragon V). The hyperbaric chamber temperature was raised from 25 degrees C +/- 0.5 degrees C at 1 ATA (air) predive to 31.5 degrees ...

We found that altering aspirating flow rate (ASR) and sample tubing length (STL) affected the response time and capnogram of 2 different side-stream capnometers. Increased flow rate shortened rise time, transit time, and total delay time (TDT), whereas increased STL increased transit and TDTs but not rise time. Increasing rise ...

The disappearance rates of 2,4- and 3,4-dichlorophenol in a small stream were studied and were shown to be first order with respect to either distance or time of flow. Both chlorophenols disappeared at approximately the same rate with average half-lives in the stream of about 4 h. The absence of ...

A high incidence of urethral stricture was noted following cardiovascular surgery. In an attempt to elucidate factors predisposing to the occurrence of urethral stricture, we studied the penile blood flow in 7 patients presenting with strictures after cardiovascular surgery. Of these patients 5 had penile-brachial pressure indexes less than 0.5 ...

Carbon monoxide (CO) remains the leading cause of death due to poisoning in the United States. CO produces toxicity by binding to hemoglobin, thereby reducing oxygen-carrying capacity, and by binding to myoglobin, which may impair cardiac output and result in cerebral ischemia. Severe CO poisoning results in coma or encephalopathy, ...

Being able to induce controlled erection in dogs and monkeys, we investigated the hemodynamics and mechanism of penile erection. 'Chronic' monkey models, having had electrodes implanted around the cavernous nerves for electroerection, were studied to evaluate the details of the hemodynamic changes. The studies included: 1) arterial blood flow, 2) ...

Microangiography, using methylene blue injected at eight vitelline vein sites, was performed on 156 developing chick embryos at Hamburger-Hamilton stages 14-22. Two stream patterns were observed. Type A coursed sequentially through the dorsal portion of the sinus venosus, the cranial segments of the primitive atrium and atrioventricular canal, the ventral ...

Pulse-volume recordings were obtained in 40 normal subjects and 62 patients with history of impotence. In office practice, this study proved to be valuable for estimating penile perfusion. Penile plethysmography is a unique and adaptable screening method for penile blood flow. It measures the contributions of all vessels at the ...

Hyperbaric air and hyperbaric hyperoxia, which have been shown to decrease both liver plasma flow and plasma volume in dogs, may potentially affect the disposition of drugs whose distribution and/or elimination are dependent upon those actions. This study examined the effects of those conditions on the disposition of salicylic acid, ...

A semicomatose victim of presumed carbon monoxide poisoning was referred to our hyperbaric chamber facility from a local Japanese hospital after having been treated with an exchange transfusion of 2 L. whole blood. A series of three hyperbaric oxygenation dives, steroid therapy, and supportive measures were used to successfully revive ...

Increases in penile circumference during sleep-related erections in human subjects closely reflected increases in penile blood flow, and bursts of activity in the bulbocavernosus and ischiocavernosus muscles were temporally related to these increases. The penile arterial system and the perineal muscles appear to have important coordinated roles in human penile ...

Erectile impotence is a well-known complication of vascular surgery in the aorto-iliac area. So far the pathogenesis has not quite been understood, but peroperative damage to the autonomous nerves has been suggested. Ninety-eight men with arterial insufficiency in their legs underwent an additional sexual evaluation including penile blood pressure measurement ...

Four patients with priapism - 3 with idiopathic and 1 with post-traumatic etiologies - were examined by arteriography and cavernosography. The findings of these examinations as well as distinct clinical findings suggest that there are 2 different types of priapism. One is characterized by severe blood stasis within the corpora ...

For normal erection two mechanisms are essential: the first provides increased arterial inflow, most probably this is obtained due to the activity of the intimal cushions within the arteriae helicinae and within the shunt vessels. The second mechanism uses increased arterial blood flow; this could be obtained due to the ...

A multifaceted therapeutic approach to the treatment of traumatic cerebral edema includes methods to reduce intracranial pressure and combat both ischemia and hypoxia. Hyperbaric oxygenation can be effective in reducing intracranial pressure by decreasing cerebral blood flow. Its ability to concomitantly increase cerebral oxygenation suggests its applicability for the treatment ...

A significant increase was found in parotid gland urea excretion in nine U.S. Navy divers during 8 d of air saturation hyperbaric exposure. The parotid urea levels correlated positively and reflected changes in blood concentrations. Considering the simplicity and ease of parotid sampling, it is suggested that this method be ...

A calibration technique for heat flow transducers (HFT) verified to within 5% by the National Bureau of Standards was used to show significant errors in calibration constants supplied by the manufacturer of the transducers. The effects of variable ambient temperature and hyperbaric helium on HFT signal responses were defined. Application ...

Hyperbaric treatment with 100% oxygen or oxygen-helium mixtures at 4-8 atmospheres absolute significantly reduced ethanol sleep-time and increased wake-up blood ethanol concentrations in C57 mice. The results indicate that the antagonism does not result from direct effects of oxygen nor from enhanced ethanol elimination, but appears to involve a direct ...

To evaluate the efficacy of hyperbaric oxygen on cyanide intoxication, changes in the intracellular oxidation-reduction state of the renal cortex were observed in situ in 16 New Zealand white rabbits by detecting the reduced pyridine nucleotide fluorescence that represents the degree of cyanide blockade of the respiratory chain. The data ...

A Doppler ultrasound probe was used in 42 men to evaluate penile circulation. Twenty-six patients had confirmation of vascular anatomy by pelvic arteriography. The average penile acceleration (peak velocity over pulse rise time) relative to the radial artery acceleration was expressed as the penile flow index. Eleven potent men had ...

Identification of specific etiologies of erectile impotence is hindered by a paucity of objective criteria needed to segregate organic from psychogenic varieties and to define specific organic causes. Simplified measurement of penile blood pressure was performed with a digital cuff and a portable ultrasound Doppler system for flow detection. An ...

Serial angiography was used to determine blood flow patterns to the penis of rams and bucks. Animals were anesthetized and the internal pudendal artery was catheterized so that contrast medium could be injected toward the crus penis area. By comparing vascular patterns of the ram and buck during erection, it ...

Most of the major rapids along the 450-kilometer course of the Colorado River in the Grand Canyon are within fracture zones that run perpendicular to the river. Steep tributaries flowing within the zones of bedrock weakness move large debris to the Colorado, forming the rapids. Accelerated flow through the rapids ...

A significant increase in blood urea was found in 11 U.S. Navy divers during 8 d of air saturation hyperbaric exposure. Similar increases in blood urea have been found in animals that convulsed during hyperbaric oxygen exposure. Therefore, it is suggested that careful attention be given to blood ammonia and ...

Plasmodial veins of Physarum polycephalum were investigated by combining cinematographical, morphological, and tensiometrical techniques. Translucent and nontranslucent (thicker) strands remaining in their original position on filter paper were analyzed in respect to their radial contraction cycles and the resulting streaming activity of the endoplasm. A new technique for measuring the ...

Hyperbaric oxygen therapy (HBO) has been used in the treatment of cerebral edema with variable results. Two different actions of HBO, one decreasing and the other increasing cerebral edema, have been postulated. We examined the permeability of the blood-brain barrier (BBB) in rats and cats. Animals of each species were ...

Po2 changes in the thalamus, hippocampus, reticular formation, and cortex, and cortical electrical activity, were recorded simultaneously in unanesthetized, unrestrained rabbits breathing air or hyperbaric oxygen. The average tissue Po2 of investigated brain structures during exposure to 100% oxygen at 7 ATA pressures, was two to three times greater than ...

Seismic-reflection profiles indicate that during the Pleistocene the Delaware River flowed across the continental shelf east of Delaware Bay and emptied into Wilmington Submarine Canyon. The ancestral valley (width, 3 to 8 kilometers; relief, 10 to 30 meters) is buried, is not reflected in the surface topography, and probably predates ...

Hyperbaric oxygen (HBO) is established therapy for various disorders, but its effectiveness depends on the efficiency of the oxygen delivery system. A mask oxygen delivery system, consisting of the standard USAF aviator's A-14 regulator and the MBU-5/P oxygen mask, is installed in all USAF hyperbaric chambers. The efficiency of the ...

Continuous transcutaneous pO2 measurements (tcPO2 measurements) were performed in healthy volunteers who were breathing air and oxygen under hyperbaric conditions (max. 4 ata). The results show a close correlation of PO2 values measured by the noninvasive method, in blood from discret arterial punctures, chamber PO2, respectively, the PO2 of the ...

The effects of decompression on various blood-cell types in chinook salmon (Oncorhynchus tshawytscha) were investigated using a 4-liter hyperbaric chamber. Thrombocytes (platelets) were found to decrease significantly in numbers following lethal and nonlethal decompressions. The response was highly dependent on depth, gas solubility, and rate of decompression, whereby increasing depth ...

In a study on rats, long-tern intermittent hyperbaric oxygenation at 2 ATA had no effect on the healing rate of open wounds in which the circulation was left intact. When the wound edges were devascularized, however, hyperbaric oxygen enhanced the wound closure rate in the final stages of healing, thus ...

The Waikato river is one of the largest river in New Zealand. It emerges from Lake Taupo, which lies near the centre of the North Island, and flows in a northerly direction for approximately 322 km to discharge into the Tasman Sea at Port Waikato on the west coast. It ...

The growth of ascitic mouse plasmacytoma 5563 has been monitored by (51)Cr-RBC dilutions within the peritoneal cavity together with differential cell counts and protein measurements.Following the intraperitoneal transplantation of one million tumour cells, there is a latency period of 4 days, possibly explained as only a 5% survival of the ...

Thesis (M.S.)--Indiana University, 2007.

Optical activity differentiating the flowing and nionflowing amoebic cytoplasm was detected. This evidence indicates mtiolecular alignment in the flow stream and can be used to provide data on the direction of alignmtient. The results were obtained by utilizing a dynamnic polarized-light detection system which is sensitive only to specimenis which ...

Hydrodynamic, topographic, and geologic factors control flow of groundwater toward an effluent stream. Features of such flow are illustrated by a hydraulic model that simulates the stream and surrounding consolidated rocks. Colored ink in the flow system marks progress toward the stream. Visual analysis shows that groundwater moves into the ...

Large numbers of E. coli were rapidly removed from the blood stream of rabbits at rates which initially paralleled the removal of similar numbers of staphylococci. Splanchnic tissues removed approximately two-thirds of the circulating bacilli in transit through the liver and spleen. In contrast to the cessation of splanchnic trapping ...

In rabbits subjected to profound damage of the blood-forming tissues by the use of benzene and mechlorethamine hydrochloride, no impairment of efficiency in the splanchnic removal of M. aureus from the blood stream could be demonstrated by a method involving catheterization of the hepatic vein. All evidence continues to indicate ...

Intraperitoneal injection of red cells tagged with radioiron into dogs with experimental ascites demonstrated that such cells were rapidly transferred into the circulating blood. When the experimental animals were not actively producing ascitic fluid, 43.4, 67.0, and 56.4 per cent respectively, of the administered radioactive red cells passed to the ...