scholarly journals Design of Electro-Thermal Glove with Sensor Function for Raynaud’s Phenomenon Patients

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 377
Author(s):  
Hewan Dawit ◽  
Qian Zhang ◽  
Yimeng Li ◽  
Syed Rashedul Islam ◽  
Jifu Mao ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
The Body ◽  
Cold Weather ◽  
Resistance Change ◽  
Warm Environment ◽  
Tensile Forces ◽  
Stability Of Resistance ◽  
Knitted Structure

Raynaud’s phenomenon (RP) is a disease that mainly affects human fingertips during cold weather. It is difficult to treat this disease using medicine, apart from keeping the body in a warm environment. In this research, conductive knitted fabrics were fabricated to help relax the vessels of the patient’s fingertips by providing proper heat, and also serving as a sensor to detect finger motion after relaxation of the blood vessels of patients. Four different structures, termed plain, purl, interlock, and rib were produced using conductive silver/PE (polyethylene) yarn and wool yarn, with a computerized flat knitting machine. The effect of knitted structure on the electro-thermal behavior, sensitivity, and stability of resistance change (∆R/R) under different tensile forces was investigated. By comprehensive comparison, the purl structure was identified as the preferred structure for the heating glove for RP patients, owing to superior electro-thermal behavior. Additionally, the purl structure had a greater capacity to detect different motions with stable resistance change. This potential electro-thermal glove could be used for functional, as well as aesthetic (fashion) purposes, and could be worn at any time and occasion with complete comfort.

scholarly journals 110 Autumn 2019, Volume 4, Issue 4 Journal Homepage: http://crcp.tums.ac.ir Cold Agglutinin Disease in Non-Secretory Multiple Myeloma: A Case Report

2020 ◽  
Author(s):  
Mahsa Abbaszadeh ◽  
Hanieh Radkhah ◽  
Sahar Karimpour Reyhan ◽  
Nasim Khajavi Rad
Keyword(s):  
Multiple Myeloma ◽  
Raynaud’S Phenomenon ◽  
Bone Marrow Aspiration ◽  
Underlying Disease ◽  
Raynaud's Phenomenon ◽  
Livedo Reticularis ◽  
Cold Weather ◽  
Cold Agglutinin ◽  
Cold Agglutinin Disease

Skin involvement is not common as the first manifestation of Multiple Myeloma (MM). Although extremely rare, leucocytoclastic vasculitis, plasmasytoma, autoimmune bullous disease, livedo reticularis and Raynaud’s phenomenon may be the initial presentation of MM. Raynaud’s phenomenon and livedo reticularis related to cold exposure can be due to Cold Agglutinin Disease (CAD) or cryoglobulinemia and can be seen as the first manifestation of MM. In this case study, we described a 55-year-old man complaining of limbs livedo reticularis and Raynaud’s phenomenon during cold weather. Further evaluations revealed anemia and elevated ESR. Skull X-ray showed multiple punched-out lesions. Finally, serum protein electrophoresis and bone marrow aspiration confirmed the diagnosis of non-secretory MM as the underlying disease of CAD. The patient was referred to the hematologist for the treatment of MM.

Ascorbic Acid does not Improve Endothelium-Dependent Flow-mediated Dilatation of the Brachial Artery in Patients with Raynaud’s Phenomenon Secondary to Systemic Sclerosis

2003 ◽  
Vol 73 (1) ◽  
pp. 3-7 ◽  
Author(s):  
M. E. Mavrikakis ◽  
J. P. Lekakis ◽  
M. Papamichael ◽  
K. S. Stamatelopoulos ◽  
Ch. C. Kostopoulos ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Smooth Muscle ◽  
Systemic Sclerosis ◽  
Endothelial Dysfunction ◽  
Brachial Artery ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Water Soluble ◽  
Placebo Administration ◽  
Flow Mediated Dilatation

Previous studies have shown that patients with Raynaud’s phenomenon secondary to systemic sclerosis present abnormal endothelial function; the mechanisms responsible for the endothelial dysfunction are unknown but increased vascular oxidative stress could be a possible cause. The hypothesis that a potent water-soluble antioxidant can reverse endothelial dysfunction in these patients was tested in the present study. We examined 11 female patients with Raynaud’s phenomenon secondary to systemic sclerosis and ten healthy control women by ultrasound imaging of the brachial artery to assess flow-mediated (endothelium-dependent) and nitrate-induced (endothelium-independent) vasodilatation. Flow-mediated dilatation and nitrate-induced dilatation were significantly reduced in patients with Raynaud’s phenomenon, indicating abnormal endothelial and smooth muscle cell function. Patients with Raynaud’s phenomenon entered a double-blind, randomized, crossover placebo-controlled trial and received orally 2 g of ascorbic acid or placebo; vascular studies were repeated two hours after ascorbic acid or placebo administration. Flow-mediated dilatation did not improve after ascorbic acid (1.6 ± 2.2% to 2.2 ± 2.5%, ns) or placebo administration (1.2 ± 1,9% to 1.7 ± 1.4%, ns); also nitrate-induced dilatation was similar after ascorbic acid or placebo (16 ± 7.4% vs 17 ± 8%, ns), suggesting no effect of ascorbic acid on endothelial and vascular smooth muscle function. In conclusion, ascorbic acid does not reverse endothelial vasomotor dysfunction in the brachial circulation of patients with Raynaud’s phenomenon secondary to systemic sclerosis. The use of different antioxidants or different dosing of ascorbic acid may be required to show a beneficial effect on endothelial vasodilator function.

The response of skin perfusion and of rheological and immunological variables to intravenous prostanoid administration in Raynaud’s phenomenon secondary to collagenosis

VASA ◽  
2005 ◽  
Vol 34 (4) ◽  
pp. 243-249 ◽  
Author(s):  
Drinda ◽  
Neumann ◽  
Pöhlmann ◽  
Vogelsang ◽  
Stein ◽  
...  
Keyword(s):  
Laser Doppler Flowmetry ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Plasma Viscosity ◽  
Laser Doppler ◽  
Erythrocyte Aggregation ◽  
Control Group ◽  
Long Term Effects ◽  
Doppler Flowmetry

Background: Prostanoids are used in the treatment of Raynaud’s phenomenon and acral perfusion disorders secondary to collagenosis. In subjective terms, intravenous administration of these agents produces success in more than 50% of patients. The therapeutic outcome of clinical administration of alprostadil or iloprost may vary from individual to individual. Patients and methods: The following variables were analysed in a cross-over study in 27 patients with collagenosis and Raynaud’s phenomenon: plasma viscosity and erythrocyte aggregation (rheological variables), partial pressure of oxygen and laser Doppler flowmetry in the finger region, and lymphocyte phenotyping and interleukin (IL) determinations (immunological variables). Results: Laser Doppler flowmetry revealed significant differences between patients with secondary Raynaud’s phenomenon and a control group of 25 healthy subjects. Laser Doppler readings did not change significantly as a result of the treatments. Therapy with iloprost produced a reduction in IL-1beta, L-selectin (CD 62 L) and IL-6. Conclusion: The change in immunological variables due to iloprost may explain the long-term effects of prostaglandins in the treatment of Raynaud’s phenomenon. From our results it is not possible to infer any preference for iloprost or alprostadil.

Raynaud’s phenomenon and digital ischaemia - pharmacologic approach and alternative treatment options

VASA ◽  
2016 ◽  
Vol 45 (3) ◽  
pp. 201-212 ◽  
Author(s):  
Birgit Linnemann ◽  
Matthias Erbe
Keyword(s):  
Quality Of Life ◽  
Angiotensin Receptor Blockers ◽  
Raynaud’S Phenomenon ◽  
Treatment Options ◽  
Raynaud's Phenomenon ◽  
Tissue Loss ◽  
Receptor Antagonists ◽  
Skin Ulcers ◽  
Digital Ischaemia

Abstract. The primary goal of therapy is to reduce the frequency and intensity of Raynaud’s attacks and to minimize the related morbidity rather than to cure the underlying condition. Treatment strategies depend on whether Raynaud’s phenomenon (RP) is primary or secondary. All patients should be instructed about general measures to maintain body warmth and to avoid triggers of RP attacks. Pharmacologic intervention can be useful for patients with severe and frequent RP episodes that impair the patient’s quality of life. Calcium channel blockers are currently the most prescribed and studied medications for this purpose. There has been limited evidence for the efficacy of alpha-1-adrenergic receptor antagonists, angiotensin receptor blockers, topical nitrates or fluoxetine to treat RP. The intravenously administered prostacyclin analogue iloprost can reduce the frequency and severity of RP attacks and is considered a second-line therapy in patients with markedly impaired quality of life, critical digital ischaemia and skin ulcers who are at risk for substantial tissue loss and amputation. Phosphodiesterase inhibitors (e.g., sildenafil) can also improve RP symptoms and ulcer healing whereas endothelin-1 receptor antagonists (e.g., bosentan) are mainly considered treatment options in secondary prevention for patients with digital skin ulcers related to systemic sclerosis. However, their use in clinical practice has been limited by their high cost. Antiplatelet therapy with low-dose aspirin is recommended for all patients who suffer from secondary RP due to ischaemia caused by structural vessel damage. Anticoagulant therapy can be considered during the acute phase of digital ischaemia in patients with suspected vascular occlusive disease attributed to the occurrence of new thromboses. In patients with critical digital ischaemia, consideration should be given to hospitalisation, optimisation of medical treatment in accordance with the underlying disease and evaluation for a secondary, possibly reversible process that is causing or aggravating the clinical symptoms.

You’re the Flight Surgeon

2020 ◽  
Vol 91 (5) ◽  
pp. 459-461
Keyword(s):  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Vibration Syndrome

Warneke JA, Pavelites JJ. You’re the flight surgeon: Raynaud’s phenomenon/hand arm vibration syndrome. Aerosp Med Hum Perform. 2020; 91(5):459–461.

Antinuclear Antibodies in both Healthy Individuals and Subjects with Raynaud's Phenomenon.

1993 ◽  
Vol 55 (5) ◽  
pp. 915-919 ◽  
Author(s):  
Yoko KOMURA ◽  
Hideyo YOSHIDA ◽  
Setsuya FUJITA ◽  
Ryoichi INABA ◽  
Hirotoshi IWATA
Keyword(s):  
Antinuclear Antibodies ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Healthy Individuals

Clinical and epidemiological characteristics and treatment of Raynaud's phenomenon in rheumatic diseases

2018 ◽  
Vol 16 (6) ◽  
pp. 178-184
Author(s):  
Z. R. Bagautdinova ◽  
◽  
I. R. Gaysin ◽  
L. V. Ivanova ◽  
A. A. Trukhina ◽  
...  
Keyword(s):  
Rheumatic Diseases ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Epidemiological Characteristics

Repurposing cilostazol for Raynaud's phenomenon

2020 ◽  
Vol 27 ◽  
Author(s):  
Nehme El-Hachem ◽  
Manal M. Fardoun ◽  
Hasan Slika ◽  
Elias Baydoun ◽  
Ali H. Eid
Keyword(s):  
Color Change ◽  
Angiotensin Receptor Blockers ◽  
Raynaud’S Phenomenon ◽  
Blood Perfusion ◽  
Raynaud's Phenomenon ◽  
Channel Blockers ◽  
Phosphodiesterase Type 5 Inhibitors ◽  
Receptor Blockers ◽  
Phosphodiesterase Type ◽  
Food And Drugs Administration

: Raynaud's Phenomenon (RP) results from exaggerated cold-induced vasoconstriction. RP patients suffer from vasospastic attacks and compromised digital blood perfusion leading to triple color change at the level the fingers. Severe RP may cause ulcers and threaten tissue viability. Many drugs have been used to alleviate the symptoms of RP. These include calcium-channel blockers, cGMP-specific phosphodiesterase type 5 inhibitors, prostacyclin analogs, and angiotensin receptor blockers. Despite their variety, these drugs do not treat RP but rather alleviate its symptoms. To date, no drug for RP has been yet approved by U.S Food and Drugs Administration. Cilostazol is a selective inhibitor of phosphodiesteraseIII, originally prescribed to treat intermittent claudication. Owing to its antiplatelet and vasodilating properties, cilostazol is being repurposed as a potential drug for RP. This review focuses on the different lines of action of action of cilostazol serving to enhance blood perfusion in RP patients.

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