Little use has thus far been made of the near infra-red spectrum for the identification and determination of hemoglobin and its derivatives BJ means of infra-red photography Eggert (1) established the transparency of carbon monoxide-saturated blood and used this property for the qualitative detection of carbon monoxide poisoning.. Eggert’s ‘observations were extended and placed on a more quanti...

One hour after a bone marrow biopsy and inhalation of Entonox gas (50% nitrous oxide (N2O) and 50% oxygen), a patient had a markedly reduced transfer factor of the lung for carbon monoxide (TL,CO). Three hours after Entonox, the patient had a normal TL,CO. Since carbon monoxide (CO) and N2O have similar spectral wavelengths, it was proposed that residual N2O in the lungs was interfering with th...

Objective: Gestational diabetes mellitus occurs during pregnancy is associated with increased cardiovascular risk. Carotid intima media thickness (CIMT) is a surrogate maker of subclinical atherosclerosis. The aim of this study is assessment of relationship between CIMT and infra-renal abdominal aorta diameter in women with and without Gestational Diabetes Mellitus. Materials and Methods: Th...

BACKGROUND AND OBJECTIVES Infra-renal aortic cross-clamping is associated to renal effects. This study aimed at analyzing halothane, isoflurane and sevoflurane effects on renal function of dogs submitted to infra-renal aortic cross-clamping. METHODS This study involved 30 mixed-breed dogs randomly distributed in three groups, according to equipotent anesthetic doses (0.75 MAC) of inhaled anes...

A 55 year old man with history of palpitation was referred for electrophysiologic study. Baseline ECG, physical examination and transthoracic echocardiographic study were normal. Electrophysiologic study revealed normal AH and HV intervals. Pacing of right atrium with a cycle length of 300 msec showed 2:1 AV block. AH interval was 252 msec and the block was infra-his (Figure 1). With continual ...

A case of bidirectional tachycardia is presented in a patient with cardiomyopathy, pulmonary emboli, and digitalis toxicity. The arrhythmia has usually been considered ventricular in origin. A supraventricular origin has also been suggested. Simultaneous recordings of standard electrocardiographic leads and His bundle potentials demonstrated that the abnormal rhythm originated in the left ventr...

A method of non-prescriptive neurofeedback is described that is based on the brain interacting with its own tonic slow cortical potential. In the absence of any explicit guidance by the clinician, the training depends entirely on the brain’s response to the unfolding signal. When this training is performed under optimal conditions in terms of placement and target frequency, there is a bias towa...

Light is an electromagnetic transverse wave, which means that it oscillates in directions perpendicular to its propagation (see Figure 1). Since it is a wave, light is characterized by its wavelength—the distance from peak to peak. Electromagnetic wavelengths cover a very wide range but only a tiny part of this range (about 400 to 700 nanometers) is visible to humans and thus of interest for sh...

An encephalocele is a protrusion of the brain and/or meninges through a defect in the skull that is closed or covered with skin. Occipital encephaloceles are the most frequent type in North America and Western Europe, where about 85% of encephaloceles take this form. To the best of our knowledge, there are only three other reported cases of double occipital encephaloceles in the literature. The...

We investigate the properties of a dressed electron which reduces, in a particular class of gauges, to the usual fermion. A one loop calculation of the propagator is presented. We show explicitly that an infra-red finite, multiplicative, mass shell renormalisation is possible for this dressed electron, or, equivalently, for the usual fermion in the abovementioned gauges. The results are in comp...