Laser Doppler Measurements of Systolic Blood Pressure on the First and Second Toe in Patients with Peripheral Arterial Disease

2021 ◽  
Author(s):  
Stefan Rosfors ◽  
Agnes Modin ◽  
Johan Petrini
Keyword(s):  
Blood Pressure ◽  
Peripheral Arterial Disease ◽  
Intraclass Correlation ◽  
Arterial Disease ◽  
Laser Doppler ◽  
Daily Routine ◽  
Measurement Variability ◽  
Peripheral Arterial ◽  
The Right ◽  
Second Toe

AbstractLaser Doppler was used to measure toe blood pressure (TBP) in 40 consecutive patients with various degree of peripheral arterial disease. The aim of this methodological study was to increase the usefulness of TBP by exploring the interchangeability between TBP from the first and second toe and by investigating daily routine reproducibility and measurement variability. According to our study design pressure values were based on three measurements that were averaged. At simultaneous measurements, TBP of the first toe was 71 mm Hg (standard deviation [SD] 25) compared with 70 mm Hg (SD 25) on the second toe. The correlation (r) between first and second toe pressure measurements was 0.84 and intraclass correlation coefficient (ICC) was 0.84. The difference between TBP on the first and second toe was not related to gender, diabetes, or magnitude of the pressures. Repeated TBP measurements of the right first toe after disconnection of cuffs, 5 to 10 minutes rest, and reconnection of cuffs had a coefficient of variation (CV) of 9% and an ICC of 0.93. CV for toe-brachial index (TBI) was 8%. Our results show that measurements of TBP from the second toe to a large extent are interchangeable with those assessed from the first toe and can be used in clinical situations where measurements from the first toe are not feasible. Flow detection with three averaged laser Doppler measurements generates TBP and TBI with low variability.

scholarly journals Interarm Difference in Blood Pressure: Reproducibility and Association with Peripheral Vascular Disease

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Jesper Mehlsen ◽  
Niels Wiinberg
Keyword(s):  
Blood Pressure ◽  
Peripheral Arterial Disease ◽  
Systolic Blood Pressure ◽  
Arterial Disease ◽  
Peripheral Vascular ◽  
Vascular Laboratory ◽  
Insignificant Difference ◽  
Peripheral Arterial ◽  
The Right ◽  
Diagnosis Of Hypertension

The present study aimed at examining the interarm difference in blood pressure and its use as an indicator of peripheral arterial disease (PAD). Data were included from consecutive patients referred from their general practitioner to our vascular laboratory for possible PAD aged 50 years or older without known cardiac disease, renal disease, or diabetes mellitus. 824 patients (453 women) with mean age of 72 years (range: 50–101) were included. 491 patients had a diagnosis of hypertension and peripheral arterial disease (PAD) was present in 386 patients. Systolic blood pressure was 143 ± 24 mmHg and 142 ± 24 mmHg on the right and left arm, respectively (P=0.015). The interarm difference was greater in patients with hypertension (P=0.002) and PAD (P<0.0005). 443 patients were measured on two separate occasions and the interarm difference for systolic blood pressure was reproducible for differences >20 mmHg. This study confirmed the presence of a systematic but clinically insignificant difference in systolic blood pressure between arms. The interarm difference was larger in hypertension and PAD. Consistent lateralisation is present for differences ≥20 mmHg and an interarm difference >25 mmHg is a reliable indicator of PAD in the legs.

scholarly journals Laser Doppler blood flowmeter as a useful instrument for the early detection of lower extremity peripheral arterial disease in hemodialysis patients: an observational study

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Takeo Ishii ◽  
Shizuka Takabe ◽  
Yuki Yanagawa ◽  
Yuko Ohshima ◽  
Yasuhiro Kagawa ◽  
...  
Keyword(s):  
Blood Flow ◽  
Peripheral Arterial Disease ◽  
Early Stage ◽  
Arterial Disease ◽  
Hemodialysis Patients ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Skin Perfusion ◽  
Dorsal Area ◽  
Peripheral Arterial

Abstract Background A simpler method for detecting atherosclerosis obliterans is required in the clinical setting. Laser Doppler flowmetry (LDF) is easy to perform and can accurately detect deterioration in skin perfusion. We performed LDF for hemodialysis patients to determine the correlations between blood flow in the lower limbs and peripheral arterial disease (PAD). Methods This retrospective study included 128 hemodialysis patients. Patients were categorized into the non-PAD group (n = 106) and PAD group (n = 22), 14 early stage PAD patients were included in the PAD group. We conducted LDF for the plantar area and dorsal area of the foot and examined skin perfusion pressure (SPP) during dialysis. Results SPP-Dorsal Area values were 82.1 ± 22.0 mmHg in the non-PAD, and 59.1 ± 20.3 mmHg in PAD group, respectively (p < 0.05). The LDF-Plantar blood flow (Qb) values were 32.7 ± 15.5 mL/min in non-PAD group and 21.5 ± 11.3 mL/min in PAD group (p < 0.001). A total of 21 non-PAD patients underwent LDF before and during dialysis. The LDF-Plantar-Qb values were 36.5 ± 17.6 mL/min before dialysis and 29.6 ± 17.7 mL/min after dialysis (p < 0.05). We adjusted SPP and LDF for PAD using logistic regression, SPP-Dorsal-Area and LDF-P were significantly correlated with PAD (p < 0.05). The receiver-operating characteristic curve analysis indicated cut-off values of 20.0 mL/min for LDF-Plantar-Qb during dialysis. Conclusion LDF is a simple technique for sensitive detection of early-stage PAD. This assessment will help physicians identify early-stage PAD, including Fontaine stage II in clinical practice, thereby allowing prompt treatment.

Saving more lives and limbs: applying a cardiac rehabilitation model of structured exercise to symptomatic peripheral arterial disease

2021 ◽  
pp. 1-8
Author(s):  
Susan Matthews ◽  
Martin Fox ◽  
Sarah Coy ◽  
Jane Whittaker ◽  
Gail Brough ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Blood Pressure ◽  
Peripheral Arterial Disease ◽  
Cardiac Rehabilitation ◽  
Intermittent Claudication ◽  
Arterial Disease ◽  
Morbidity And Mortality ◽  
Supervised Exercise ◽  
Peripheral Arterial

Background/Aims Peripheral arterial disease is common among those aged 60 years or above and can cause debilitating intermittent claudication. This impacts quality of life and is a marker for increased morbidity and mortality, mainly from cardiovascular disease. Access to recommended exercise programmes for people with symptomatic peripheral arterial disease is poor in most areas of the UK. This study aimed to evaluate the benefits of expanding an established cardiac rehabilitation service to accommodate supervised exercise for people with peripheral arterial disease Methods The study evaluated 11 participants peripheral arterial disease and intermittent claudication who were referred by the Manchester leg circulation service. Participants underwent the programme involving eight weekly 1.5 hour sessions of supervised exercise and cardiovascular education with support, reassurance and motivation. The participants' blood pressure, walking impairment, quality of life, anxiety and depression were monitored and reviewed. Results Overall, the participants' walking distance, intermittent claudication, quality of life and blood pressure had improved. The participants' overall satisfaction with the programme was excellent. The programme also demonstrated clinical and cost-effectiveness. Conclusions A structured, supervised exercise programme can have considerable benefits for people with peripheral arterial disease, improving their symptoms and quality of life. It may also help to reduce the morbidity and mortality risks associated with inactivity in this patient group.

scholarly journals Heat therapy vs. supervised exercise therapy for peripheral arterial disease: a 12-wk randomized, controlled trial

2019 ◽  
Vol 316 (6) ◽  
pp. H1495-H1506 ◽  
Author(s):  
Ashley P. Akerman ◽  
Kate N. Thomas ◽  
Andre M. van Rij ◽  
E. Dianne Body ◽  
Mesfer Alfadhel ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Peripheral Arterial Disease ◽  
Water Immersion ◽  
Ankle Brachial Index ◽  
Arterial Disease ◽  
Hot Water ◽  
Walking Distance ◽  
Supervised Exercise ◽  
Heat Therapy ◽  
Peripheral Arterial

Peripheral arterial disease (PAD) is characterized by lower limb atherosclerosis impairing blood supply and causing walking-induced leg pain or claudication. Adherence to traditional exercise training programs is poor due to these symptoms despite exercise being a mainstay of conservative treatment. Heat therapy improves many cardiovascular health outcomes, so this study tested if this was a viable alternative cardiovascular therapy for PAD patients. Volunteers with PAD were randomized to 12 wk of heat ( n = 11; mean age 76 ± 8 yr, BMI 28.7 ± 3.5 kg/m2, 4 females) or exercise ( n = 11; 74 ± 10 yr, 28.5 ± 6.8 kg/m2, 3 females). Heat involved spa bathing at ∼39°C, 3–5 days/wk for ≤30 min, followed by ≤30 min of callisthenics. Exercise involved ≤90 min of supervised walking and gym-based exercise, 1–2 days/wk. Following the interventions, total walking distance during a 6-min walk test increased (from ∼350 m) by 41 m (95% CI: [13, 69], P = 0.006) regardless of group, and pain-free walking distance increased (from ∼170 m) by 43 m ([22, 63], P < 0.001). Systolic blood pressure was reduced more following heat (−7 mmHg, [−4, −10], P < 0.001) than following exercise (−3 mmHg, [0, −6], P = 0.078), and diastolic and mean arterial pressure decreased by 4 mmHg in both groups ( P = 0.002). There were no significant changes in blood volume, ankle-brachial index, or measures of vascular health. There were no differences in the improvement in functional or blood pressure outcomes between heat and exercise in individuals with PAD. NEW & NOTEWORTHY Heat therapy via hot-water immersion and supervised exercise both improved walking distance and resting blood pressure in peripheral arterial disease (PAD) patients over 12 wk. Adherence to heat therapy was excellent, and the heat intervention was well tolerated. The results of the current study indicate that heat therapy can improve functional ability and has potential as an effective cardiovascular conditioning tool for individuals with PAD. Listen to this article's corresponding podcast at https://ajpheart.podbean.com/e/heat-therapy-vs-exercise-in-peripheral-arterial-disease/ .

Ankle Brachial Pressure Index: An update for the vascular specialist and general practitioner

Vascular ◽  
2019 ◽  
Vol 27 (5) ◽  
pp. 560-570 ◽  
Author(s):  
Benjamin Thurston ◽  
Joseph Dawson
Keyword(s):  
Blood Pressure ◽  
Peripheral Arterial Disease ◽  
Arterial Disease ◽  
Cardiac Risk Factor ◽  
Diabetic Patients ◽  
Ankle Brachial Pressure Index ◽  
Pressure Index ◽  
Clinical Scenarios ◽  
Invaluable Tool ◽  
Peripheral Arterial

Objectives Ankle brachial pressure index (ABPI) is an invaluable tool for assessing the severity of peripheral arterial disease. In addition, it can be used as an independent marker of cardiovascular risk, with a predictive ability similar to the Framingham criteria. Identification of an abnormal ABPI should therefore trigger aggressive cardiac risk factor modulation for a patient. Unfortunately, the significance of abnormal ABPIs is poorly understood within the general medical community. This is compounded by the influence of various comorbidities on accurate measurement of ABPI, potentially leading to a wide variability in readings that need to be considered before interpretation in these patient populations. We aim to address these issues by revealing several common misunderstandings and pitfalls in ABPI measurement, describing accurate methodology, and highlighting patient cohorts in whom additional or alternative approaches may be required. Methods We present a narrative review of the role of ABPI in both the community and hospital setting. We have performed a literature review, exploring the validity and reproducibility of methodology for obtaining ABPI, alongside the utility of ABPI in different clinical scenarios. Results The measurement of ABPI is often performed incorrectly. Common pitfalls include inadequate patient preparation, failure to obtain the blood pressure from the correct lower limb artery in patients with tibial disease, failure to account for differences in brachial blood pressure between the arms, inappropriately chosen equipment and patient factors such as highly calcified arteries. Standardisation of methodology greatly improves reliability of the test. Exercise ABPI can identify significant peripheral arterial disease in patients with normal resting ABPI. In addition to its role in peripheral arterial disease, ABPI measurement has a role in assessing venous ulcers, entrapment syndromes and injured extremities; conversely, it has a more limited utility in the diabetic population. Conclusions A thorough understanding of the correct technique and associated limitations of ABPI measurement is essential in accurately generating and interpreting the data it provides. With this knowledge, the ABPI is an invaluable tool to help manage patients with peripheral arterial disease. Perhaps more importantly, ABPI can be used to identify and risk stratify patients with asymptomatic peripheral arterial disease, itself a major indicator of significant underlying cardiovascular disease. With the emergence of best medical therapy, targeted pharmacotherapy and lifestyle changes can reduce the risk of major cardiovascular events in high-risk patients by approximately 30%, particularly in diabetic patients. Therefore, the utility of ABPI transgresses vascular surgery, with an essential role in general practice and public health.

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