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Peripheral and Organ Perfusion's Role in Prognosis of Disease Severity and Mortality in Severe COVID-19 Patients: Prospective Cohort Study.
J Clin Med
December 2024
Department of Internal Diseases, Nephrology and Dialysis, Military Institute of Medicine-National Research Institute, 04-141 Warsaw, Poland.
Severe COVID-19 is associated with a generalized inflammatory response leading to peripheral and organ perfusion disorders. : This study aimed to evaluate the usefulness of peripheral and organ perfusion assessments in the prediction of prognosis and mortality in patients with severe COVID-19. : In the first 48 h of hospitalization, peripheral perfusion (saturation, Finger Infrared Thermography-FIT; Capillary Refill Time-CRT), and the color Doppler renal cortex perfusion (RCP) were estimated in a group of 102 severe COVID-19 patients.
View Article and Find Full Text PDFUse of nailfold capillaroscopy for the assessment of patients undergoing digit replantation and revascularization.
Jt Dis Relat Surg
January 2025
İnönü Üniversitesi Tıp Fakültesi Turgut Özal Tıp Merkezi, Ortopedi ve Travmatoloji Anabilim Dalı, 44280 Malatya, Türkiye.
Objectives: In this study, we aimed to evaluate microvascular changes using nailfold capillaroscopy in patients who underwent digit replantation and revascularization.
Patients And Methods: A total of 46 patients (34 males, 12 females; mean age: 45.8±17.
Alterations on Nailfold Videocapillaroscopy in Myelodysplastic Syndrome and Onychomycosis in a Female Smoker: Microvascular Dysfunction Without Connective Tissue Disease.
Int J Rheum Dis
December 2024
Department of Rheumatology of Lucania-UOSD of Rheumatology, "Madonna delle Grazie" Hospital, Matera, Italy.
A 58-year-old female smoker diagnosed with myelodysplastic syndrome (MDS) presented with Raynaud's phenomenon and a "scleroderma-like" pattern on nailfold capillaroscopy. The capillaroscopic abnormalities were observed across all fingers, including those without clinical manifestations of onychomycosis. Over a two-year follow-up, there was no evidence of clinical or serological progression toward a connective tissue disease, particularly systemic sclerosis.
View Article and Find Full Text PDFImpact of macrohemodynamic manipulations during cardiopulmonary bypass on finger microcirculation assessed by photoplethysmography signal components.
Physiol Meas
December 2024
Department of Critical Care, University Hospital La Princesa, Autonomous University of Madrid, Madrid, Spain.
Continuous monitoring of the hemodynamic coherence between macro and microcirculation is difficult at the bedside. We tested the role of photoplethysmography (PPG) to real-time assessment of microcirculation during extreme manipulation of macrohemodynamics induced by the cardiopulmonary bypass (CPB).We analyzed the alternating (AC) and direct (DC) components of the finger PPG in 12 patients undergoing cardiac surgery with CPB at five moments: (1) before-CPB; (2) CPB-start, at the transition from pulsatile to non-pulsatile blood flow; (3) CPB-aortic clamping, at a sudden decrease in pump blood flow and volemia.
View Article and Find Full Text PDFEffects of 1267 nm Illumination on Microcirculation Regulatory Mechanisms.
J Biophotonics
November 2024
R&D Center of Biomedical Photonics, Orel State University, Orel, Russia.
This study explored the effects of 1267 nm laser irradiation on changes in blood flow parameters and activation of the regulatory mechanisms of the microcirculatory bed (MCB). Using laser Doppler flowmetry (LDF) technique and time-frequency analysis of perfusion signals, changes in the MCB of 16 healthy volunteers, targeting the distal phalanx of the third finger with 1267 nm laser irradiation were evaluated. Results indicated no significant differences in perfusion between control and target measurements, likely due to blood flow redistribution caused by vessel dilation/constriction.
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