Arterial Stiffness and Ankle-Brachial Index - Cross-Sectional Study of 259 Primary Care Patients ≥50 Year-Old.

BACKGROUND Lower-extremity arterial disease (LEAD) is the most common form of peripheral artery disease (PAD), and diagnosis relies on the ankle-brachial index (ABI). The objective of our study was to evaluate the correlation between ABI and arterial stiffness parameters, specifically focusing on PWV. Additionally, we aimed to assess the correlation between PWV and established LEAD risk factors. MATERIAL AND METHODS The study included primary care patients aged ≥50 years. Pulse wave velocity was measured with a Mobil-o-Graph Pulse Wave Analyzer (I.E.M. Germany). Two criteria defined abnormal PWV: 1) universal PWV threshold exceeding 10 m/s (uPWVt) and 2) surpassing an individualized threshold calculated by the device, accounting for sex, age, and blood pressure (iPWVt). RESULTS We assessed PWV in 266 individuals and both PWV and ABI in 259. Overall, 6/259 (2.3%) had a diagnosis of LEAD, 44/259(16.9%) had ABI <0.9, and 97/259 (37.5%) had PWV values above iPWVt. Among patients with Doppler ABI <0.9, 25/44 (56.8%) exhibited elevated iPWVt versus 72/215 (33.5%) in those with ABI ≥0.9 (P=0.003, r=0.18 Spearman's correlation). Among patients with ABI <0.9 19/44 (43.2%) had PWV >iPWVt (P=0.003, r=0.18). We observed significant correlation between elevated PWV (both cutoffs) and hypertension (in both P=0.009, r=0.16) and PWV >uPWVt correlated with the presence of diabetes (P=0.004, r=0.18). CONCLUSIONS Elevated PWV correlates with abnormal ABI and some cardiovascular risk factors in primary care patients aged 50 and above. Use of individualized PWV thresholds, factoring in age, appears to be a preferable approach for assessment of arterial stiffness and early diagnosis of LEAD.

Assessing Automatic Plethysmographic Ankle-Brachial Index Devices in Peripheral Artery Disease Detection: A Comparative Study with Doppler Ankle-Brachial Index Measurements.

BACKGROUND The ankle-brachial index (ABI) is a critical diagnostic test for peripheral artery disease (PAD), albeit requiring technical expertise and dedicated resources. The advent of automatic ABI devices proposes a more accessible approach, necessitating fewer resources and less expertise. This study was conducted to gather data on PAD prevalence and to evaluate the correlation and efficacy of automatic ABI measurements vs traditional Doppler ABI measurements to understand their potential role in primary care settings. MATERIAL AND METHODS ABI measurements were obtained using both the Doppler method and an automatic plethysmographic device (Dopplex ABility, Huntleigh Healthcare). RESULTS Of the 290 participants (mean age 67.6±7.4 years), Doppler ABI method identified 16.8% with abnormal results (<0.9), while the automatic method identified only 5.9%. The mean Doppler ABI was 1.05±0.15, and the mean automatic ABI was 1.12±0.13. The sensitivity of the automatic ABI measurements was 22.2%, and the specificity was 96.8%, with a positive predictive value of 57.1%, and a negative predictive value of 86.9%. Adjustments in the automatic assessment and inclusion of pulse wave velocity enhanced the diagnostic capabilities of the automatic ABI device. CONCLUSIONS While the automatic plethysmographic ABI device may lack the necessary diagnostic capabilities to replace the traditional Doppler ABI device as a standalone test in PAD diagnosis, it could still offer significant value in primary care settings if integrated with adjusted cut-off points and pulse wave velocity analysis.

Arterial stiffness - a cardiovascular risk factor to assess among primary care patients.

Arterial stiffness is a characteristic of the arterial wall strongly associated with ageing and hypertension. It has been confirmed as a significant cardio-vascular risk factor. Despite available non- invasive measurement methods of central artery stiffening, it has not become a prevalent diagnostic marker in primary care so far. This article provides an overview of pathophysiology of arterial stiffness, possible diagnostic techniques, association with cardiovascular conditions and potential perspective of primary care to implement an additional distinctive parameter to evaluate cardiac risk.

Capnocytophaga canimorsus ­ an underestimated danger after dog or cat bite ­ review of literature

Capnocytophaga canimorsus is a gram-negative, capnophilic rod constituting normal bacterial flora of the oral cavity of dogs and cats. It is also considered to be an etiological factor of infections in human that may lead to multiple complications, i.a. sepsis, endocarditis and meningitis. C. canimorsus poses a serious threat, especially to patients with asplenia, cirrhosis or alcohol abuse. In most cases, infection occurs after a dog bite. Isolation and identification of the bacteria from the biological material is difficult and often delayed because of slow growth of the bacteria on microbiological media. Gold standard for bacteriological identification of C. canimorsus is polymerase chain reaction method. Amoxicillin with clavulanic acid is considered the drug of choice used in prophylaxis of C. canimorsus infections. Based on the data available from the literature, the authors present the epidemiology, risk factors, clinical picture, diagnostic methods and treatment of the C. canimorsus infection.