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Red Reflex

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1341. [Quality of induction and adrenocortical function. A clinical comparison of Etomidate-Lipuro and Hypnomidate]. (PubMed)

into a freely running i.v. line (18 Gcannula) that was used only for the hypnotic and was removed 15 min later. During injection, the patients were asked to inform the anaesthesiologist spontaneously and on request about their sensations at the injection site. The time from the beginning of anaesthesia until the disappearance of the eyelash reflex was measured. The patients were ventilated and vecuronium was administered to allow good intubation conditions 2-3 min later. For the first 10 min, blood pressure (...) and heart rate were measured every minute. Postoperatively, the same investigator made rounds once a day and examined the injection sites. Signs of pain, redness, swelling, induration, thrombophlebitis, or thrombosis were noted. In the second part of the study, 30 patients were investigated for endocrinological changes after induction of anaesthesia with Etomidat-Lipuro, Hypnomidate, or Diprivan. The patients were allocated to the groups at random. A radial artery catheter was inserted in every patient

1993 Der Anaesthesist

1342. A comparative study in subjects with homozygous sickle cell disease and in normal subjects of responses evoked in forearm vasculature by mild, indirect cooling. (PubMed)

forearm blood flow was measured by venous occlusion plethysmography, cutaneous red cell flux was monitored by a laser Doppler flowmeter and arterial pressure was recorded by semi-automatic sphygmomanometry. Of the AA subjects, three showed a decrease in total forearm vascular resistance (FVR, of -10%) in response to the first immersion and this reversed to an increase in FVR (+7%) by the sixth immersion. The remaining five showed an increase in FVR (+65%) which persisted until the sixth immersion (26 (...) subjects showed a primary reflex vasoconstriction in forearm muscle in response to mild, indirect cooling which was overcome in some individuals by muscle vasodilation of the alerting response that is evoked by novel or noxious stimuli.(ABSTRACT TRUNCATED AT 250 WORDS)

1994 Clinical autonomic research : official journal of the Clinical Autonomic Research Society

1343. Primary capsulectomy, anterior vitrectomy, lensectomy, and posterior chamber lens implantation in children: limbal versus pars plana. (PubMed)

in the study and were divided into 2 equal groups for data analysis. All eyes had lensectomy and posterior chamber intraocular lens (PC IOL) implantation. Primary posterior capsulectomy and anterior vitrectomy were performed through the limbus in half of the eyes and the pars plana in the other half. Main outcome measures included visual acuity, estimated red reflex, postsurgical inflammatory reaction, corneal clarity, posterior synechias, iris capture, IOL position, capsulectomy size, glaucoma, cystoid

1999 Journal of cataract and refractive surgery

1344. Low-frequency spontaneous fluctuations of R-R interval and blood pressure in conscious humans: a baroreceptor or central phenomenon? (PubMed)

s of apnoea starting at end expiration, we applied either 600 ms neck suction (-40 mmHg) to the carotid sinus region, or no stimulus (anticipation control), or a loud whistle (alerting control), every 60 s, for 30 min. (i.e. 10 of each 'stimulus'). We recorded neck pressure, blood pressure (Finapres), R-R interval (ECG), infra-red plethysmographic skin blood flow and respiration (impedance). By subtracting the alerting response from the neck suction response we obtained the responses caused (...) purely by baroreceptor stimulation. 3. The initial reflex bradycardia and hypotension was followed by arteriolar vasoconstriction, presumably due to recompensation by the baroreflex, and then by a further reflex bradycardia-producing a decaying oscillation of the R-R interval about the control R-R. The period of this damped oscillation was 0.103 +/- 0.024 Hz, similar to the frequency of the low-frequency peak obtained by power spectral analysis of heart rate variability (0.093 +/- 0.016 Hz

1994 Clinical science (London, England : 1979)

1345. Vascular effects of leukotriene D4 in human skin. (PubMed)

-induced blood flow rate, leaving a local red reaction. This local red reaction was not affected by H1 and H2 antagonists. These results indicate histamine as a mediator of the axon reflex, and show that LTD4 causes a direct vasodilatory effect that is not mediated via histamine or cyclooxygenase products. The laser-Doppler flowmeter was applied for dynamic studies of the vasopressor response in the skin during a Valsalva maneuver, and the relative changes in blood flow were confirmed by control (...) Vascular effects of leukotriene D4 in human skin. Leukotriene D4 (LTD4) increased the blood flow rate in human skin, equipotent to histamine in the dose range of 3.1-200 pmol. The vasodilatation lasted for up to 60 min, and no late reactions occurred. Indomethacin did not affect the LTD4-induced blood flow rate. H1 and H2 antagonists reduced the increase in blood flow rate, but did not abolish the response to LTD4. Local nerve block inhibited the axon reflex-mediated flare component of the LTD4

1987 The Journal of investigative dermatology

1346. Nasal Ocular Reflexes Contribute to Eye Symptoms

Nasal Ocular Reflexes Contribute to Eye Symptoms Nasal Ocular Reflexes Contribute to Eye Symptoms - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before adding more. Nasal Ocular Reflexes Contribute to Eye Symptoms The safety (...) to Brief Summary: Eye symptoms of tearing, redness and itching frequently occur in patients with allergic rhinitis or hayfever. The purpose of this trial is to study whether placing an allergen (a substance that causes allergies) directly in your nose can cause you to have eye symptoms as well as nasal symptoms. Condition or disease Intervention/treatment Phase Rhinitis, Allergic, Seasonal Drug: Azelastine nasal spray Not Applicable Detailed Description: Symptoms of conjunctivitis (tearing, redness

2005 Clinical Trials

1347. High-resolution ultrasound reflex transmission imaging and digital photography: potential tools for the quantitative assessment of pigmented lesions. (PubMed)

High-resolution ultrasound reflex transmission imaging and digital photography: potential tools for the quantitative assessment of pigmented lesions. High-resolution ultrasound (HRU) is a relatively cheap imaging method that shows small quantitative differences between benign naevi and melanoma. Previous studies using B-mode display suggest that these arise from their differing attenuating properties. Attenuation characteristics, however, are better evaluated using reflex transmission imaging (...) photographs were used to draw lesion boundaries on RT images for feature calculation. Melanoma were less attenuating than naevi on RTI (P=0.026) and had greater red colour variegation on WL imaging (P=0.016). The combination of quantitative parameters (two from RTI and four from photographs) improved sensitivity for this sample without compromising the specificity of 100% compared with either modality alone. The procedure is highly reproducible (r=0.85 between two operators).Pigmented skin lesions can

2006 Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)

1348. Evaluation of retinal status using chromatic pupil light reflex activity in healthy and diseased canine eyes. (PubMed)

Evaluation of retinal status using chromatic pupil light reflex activity in healthy and diseased canine eyes. To differentiate rod-cone-mediated pupil light reflexes (PLRs) from intrinsic melanopsin-mediated pupil light reflexes by comparing pupil responses with red and blue light stimuli of differing intensities in normal dog eyes and in those with sudden acquired retinal degeneration syndrome (SARDS) exhibiting a nonrecordable electroretinogram.The PLR was evaluated in 14 healthy dogs using (...) , electroretinographic amplitude, and PLR at low light intensity. However, in SARDS dogs, a pupil light reflex could be elicited with wavelengths corresponding to the melanopsin spectral sensitivity (blue light - peak at 480 nm) and at relatively high intensity (4.3 log units or higher), whereas red light (630 nm peak wavelength) was ineffective in eliciting any detectable PLR response even at light intensities of 6 log units (1,000,000 cd/m(2)).The PLR in healthy canine eyes can be elicited at very low light

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2007 Investigative Ophthalmology & Visual Science

1349. Comparison of the Effects of Electrolytic and Chemical Destruction of the Red Nucleus on the Compensatory Capacity of Rats With Rubrospinal Tract Lesions (PubMed)

Comparison of the Effects of Electrolytic and Chemical Destruction of the Red Nucleus on the Compensatory Capacity of Rats With Rubrospinal Tract Lesions Transection of the rubrospinal tract in rats, performed before lesion of the red nucleus, resulted in the facilitated recovery of motor activity and operantly conditioned reflexes. Such facilitation was absent when the red nucleus is lesioned alone. This phenomenon is explained by the switching of descending influences on the corticospinal (...) tract through the participation of the following system: red nucleus--inferior olive--cerebellum--ventrolateral thalamic nucleus--cerebral cortex. The above mentioned facilitating influence on the recovery process was particularly prominent in rats with quinolinic acid-induced lesion of the red nucleus. Under these conditions, the cerebellar ascending fibers to the ventrolateral thalamic nucleus were preserved. Decreased facilitated recovery following electrolytic lesion of the red nucleus suggests

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1999 Neural plasticity

1350. Effects of neuropeptides, ruthenium red and neuraminidase on chemoreflexes mediated by afferents in the dog epicardium. (PubMed)

Effects of neuropeptides, ruthenium red and neuraminidase on chemoreflexes mediated by afferents in the dog epicardium. 1. Experiments were performed on anaesthetized, open-chest dogs to determine reflex effects on blood pressure and heart rate produced by stimulation of neural afferents of the left ventricular epicardium by local application of capsaicin, bradykinin, nicotine and the neuropeptides substance P (SP), neurokinin A (NKA), neurokinin B (NKB) and calcitonin gene-related peptide (...) (CGRP). 2. Studies also included assessing whether reflexogenic actions of capsaicin, bradykinin and nicotine are influenced by epicardial treatment with either neuropeptides, Ruthenium Red or neuraminidase. 3. Epicardial application of either capsaicin (0.1-10 micrograms) or bradykinin (0.1-1 micrograms), consistently resulted in dose-related increases in blood pressure and heart rate, whereas reflex bradycardia and hypotensive effects were initiated by the application of nicotine (30-50 micrograms

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1991 The Journal of physiology

1351. Comparison of the main sequence of reflexive saccades and the quick phases of optokinetic nystagmus (PubMed)

simultaneously. OKN was stimulated by rotating a full field patterned curtain around the subject at 10-50 degrees /s. Reflexive saccades were elicited to red LED targets at 5-20 degrees eccentricity.OKN quick phases tended to have a longer duration compared to saccades, but these differences were not significant. OKN quick phases had a slightly lower peak velocity compared to saccades, which was statistically significant (p<0.05).The main sequence for duration is the same for reflexive saccades and OKN quick (...) Comparison of the main sequence of reflexive saccades and the quick phases of optokinetic nystagmus Abnormalities in the saccadic main sequence are an important finding and may indicate pathology of the ocular motor periphery or central neurological disorders. In young or uncooperative patients it can be difficult eliciting a sufficient number of saccades to measure the main sequence. It is often assumed that the quick phases of optokinetic nystagmus (OKN) are identical to saccades

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2001 The British journal of ophthalmology

1352. Treatment of acute reflex sympathetic dystrophy with DMSO 50% in a fatty cream. (PubMed)

Treatment of acute reflex sympathetic dystrophy with DMSO 50% in a fatty cream. Acute Reflex Sympathetic Dystrophy (acute RSD) was defined using a reproducible classification. Elevated temperature of the affected extremity ("calor"), measured by the dorsal side of the observer's hand and mentioned by the patient, pain ("dolor") measured by the Visual Analogue Scale (VAS), redness ("rubor"), edema ("tumor") and limited active range of motion ("functio laesa"), all contributed

1996 Acta Anaesthesiologica Scandinavica

1353. The red reflex. (PubMed)

The red reflex. Eliciting the red reflex is a useful clinical test that can be easily performed in the pediatric emergency room. A direct ophthalmoscope is the only tool needed to perform this test. The test is non-invasive, making it a quick screening tool for even the most apprehensive child. A normal red reflex can rule out intraocular pathology; an abnormal reflex can indicate need for urgent ophthalmologic referral. The differential diagnoses for an absent (or black) reflex; an abnormally (...) sized, shaped or positioned reflex; leukocoria; as well as a non-homogenous reflex are listed.

2006 Pediatric Emergency Care

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