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PubMed1999

Acute pulmonary edema associated with placement of waist-high, custom-fit compression stockings.

Compression stockings are a safe, noninvasive treatment for patients with symptomatic orthostatic hypotension due to autonomic nervous system dysfunction. In this report, we describe a 75-year-old man who had development of pulmonary edema approximately 45 minutes after placement of compression stockings on the first postoperative day following a carotid endarterectomy. No sudden changes were noted on an electrocardiogram or echocardiogram or in the cardiac isoenzymes associated with the pulmonary edema. The patient had a history of coronary artery disease, diabetes mellitus-induced autonomic nervous system dysfunction, and recent surgery near the carotid baroreceptor. All these factors may have limited his ability to compensate for a rapid increase in central blood volume. The temporal relationship of the patient's respiratory distress to the placement of the compression stockings, in the absence of laboratory findings of primary cardiac dysfunction, make stocking-related fluid shift the likely precipitating event in the formation of acute pulmonary edema. This case suggests that compression stockings should be used with caution in patients with limited cardiac reserve.

Acute Disease↗

PubMed1998

Enoxaparin plus compression stockings compared with compression stockings alone in the prevention of venous thromboembolism after elective neurosurgery.

BACKGROUND: Compression stockings are recommended for prophylaxis against venous thromboembolism in patients undergoing neurosurgery, but anticoagulant agents have not gained wide acceptance because of concern about intracranial bleeding. METHODS: In a multicenter, randomized, double-blind trial, we assessed the efficacy and safety of enoxaparin in conjunction with the use of compression stockings in the prevention of venous thromboembolism in patients undergoing elective neurosurgery. Enoxaparin (40 mg once daily) or placebo was given subcutaneously for not less than seven days beginning within 24 hours after the completion of surgery. The primary end point was symptomatic, objectively confirmed venous thromboembolism or deep-vein thrombosis assessed by bilateral venography, which was performed in all patients on day 8+/-1. Bleeding side effects were carefully assessed. RESULTS: Among the 307 patients assigned to treatment groups, 129 of the 154 patients receiving placebo (84 percent) and 130 of the 153 patients receiving enoxaparin (85 percent) had venographic studies adequate for analysis. An additional patient in the placebo group died before venography of autopsy-confirmed pulmonary embolism. In this analysis, 42 patients given placebo (32 percent) and 22 patients given enoxaparin (17 percent) had deep-vein thrombosis (relative risk in the enoxaparin group, 0.52; 95 percent confidence interval, 0.33 to 0.82; P=0.004). The rates of proximal deep-vein thrombosis were 13 percent in patients receiving placebo and 5 percent in patients receiving enoxaparin (relative risk in the enoxaparin group, 0.41; 95 percent confidence interval, 0.17 to 0.95; P=0.04). Two patients in the placebo group died of autopsy-confirmed pulmonary embolism on days 9 and 16. Major bleeding occurred in four patients receiving placebo (intracranial bleeding in all four) and four patients (intracranial bleeding in three) receiving enoxaparin (3 percent of each group). CONCLUSIONS: Enoxaparin combined with compression stockings is more effective than compression stockings alone for the prevention of venous thromboembolism after elective neurosurgery and does not cause excessive bleeding.

Adult↗

PubMed1989

Prevention of deep vein thrombosis in potential neurosurgical patients. A randomized trial comparing graduated compression stockings alone or graduated compression stockings plus intermittent pneumatic compression with control.

In a randomized trial of neurosurgical patients, groups wearing graduated compression stockings alone (group 1) or graduated compression stockings plus intermittent pneumatic compression (IPC) (group 2) were compared with an untreated control group in the prevention of deep vein thrombosis (DVT). In both active treatment groups, the graduated compression stockings were continued for 14 days or until hospital discharge, if earlier. In group 2, IPC was continued for seven days. All patients underwent DVT surveillance with iodine 125-labeled fibrinogen leg scanning and impedance plethysmography. Venography was carried out if either test became abnormal. Deep vein thrombosis occurred in seven (8.8%) of 80 patients in group 1, in seven (9.0%) of 78 patients in group 2, and in 16 (19.8%) of 81 patients in the control group. The observed differences among these rates are statistically significant. The results of this study indicate that graduated compression stockings alone or in combination with IPC are effective methods of preventing DVT in neurosurgical patients.

Clinical Trials as Topic↗

PubMedDate not supplied

What information patients require on graduated compression stockings.

Graduated compression stockings are used prophylactically on a variety of patients within acute hospitals. Anecdotal evidence suggests patients have a limited understanding of this treatment. The aim of this qualitative study was to explore patients' experiences of compression stockings and to ascertain perceptions of their use. Information was gathered using telephone interviews from a sample of 12 adults who had been patients within the past 2 months, and who had worn compression stockings for more than 48 hours. The results showed that patients received little or no information from healthcare staff regarding compression stockings, but that they did have knowledge from other sources, such as long-haul flight advice. This raises issues of informed consent and patient empowerment and highlights the need for both verbal and written information. The information gained informed a patient information leaflet, which was developed in partnership with a patient focus group.

Adult↗

PubMed1991

A prospective comparison of thromboembolic stockings, external sequential pneumatic compression stockings and heparin sodium/dihydroergotamine mesylate for the prevention of thromboembolic complications in urological surgery.

Deep venous thrombosis and pulmonary emboli are reported to occur in up to 66% of the patients undergoing a major urological operation. Thromboembolic stockings, external sequential pneumatic compression stockings and anticoagulant agents, such as heparin sodium plus dihydroergotamine mesylate, have been suggested to decrease the risk of deep venous thrombosis and pulmonary emboli. A total of 74 evaluable patients undergoing a major urological operation was randomized to receive either thromboembolic stockings, external sequential pneumatic compression stockings, or heparin plus dihydroergotamine as prophylaxis against deep venous thrombosis and pulmonary emboli. 111Indium-labeled platelet scans, performed preoperatively and on days 1, 3 and 6 postoperatively, were used to diagnose deep venous thrombosis and pulmonary emboli. Mean patient age was 63 years and all but 1 operation was performed for neoplastic disease. Deep venous thrombosis was detected in 5 of 25 patients (20%) with thromboembolic stockings, 3 of 24 (12.5%) with external sequential pneumatic compression stockings and 2 of 25 (8%) with heparin plus dihydroergotamine. There was no difference in blood loss or complications among the groups. Although statistical significance among the treatment groups was not reached in this study, the trend to a decrease in deep venous thrombosis and pulmonary emboli with external sequential pneumatic compression stockings and heparin plus dihydroergotamine, and an absence of an increase in morbidity in these groups supports the use of these modalities to decrease the morbidity and mortality of deep venous thrombosis and pulmonary emboli.

Adult↗

PubMed1999

Movement-related variation in forces under compression stockings.

OBJECTIVES: Compression therapy is widely used in the treatment of venous leg ulcers, but the efficacy of this treatment is variable. Assessment of variation in compression forces associated with movement may help to elucidate the mechanism of action of compression therapy. The aim of this study was to develop and apply a system to investigate forces under compression stockings during movement. METHOD: Three sensors were placed on the medial aspect of the left leg on six healthy volunteers to monitor forces under class 2 (Continental European classification) compression stockings. Data were recorded during dorsiflexion and plantar flexion of the left foot and also during short periods of walking. RESULTS: Changes in pressure were observed, associated with dorsiflexion and plantar flexion of the foot. These changes were dependent on sensor position. Changes in pressure during walking were also position-dependent and of variable duration. CONCLUSIONS: The system enables forces associated with compression therapy to be examined during movement and may thus be of value in further understanding its mechanism of action. Foot movement can be associated with clear changes in pressure under compression stockings and rapid changes in pressure may occur during walking.

Adult↗

PubMed1980

[Compression therapy of the lower extremities particularly with compression stockings].

The compression therapy of the lower extremities is based on strong patho-physiologic lines and is well codified. The necessary values of pression for any case and the exact indication for compression stockings and pantys for each compression class are well known. The physician has to prescribe thoroughly the adequate compression stocking, thus protecting the patient best against further complications.

Arteries↗

PubMed2000

The effect of medical elastic compression stockings with different slope values on edema. Measurements underneath three different types of stockings.

BACKGROUND: Medical elastic compression stockings are widely used in venous diseases. Their effects on the venous system have been shown in the past. Up to now, little is known about the slope or stiffness factor of stockings. OBJECTIVE: To evaluate the effect of different slope and stiffness factors of medical elastic compression stockings on the venous system. METHODS: Examinations were carried out in 29 legs of 25 different patients (12 men, 13 women) with a mean age of 66.0 years. All patients were known with chronic venous insufficiency. On all these patients three different elastic medical compression stockings were tested; one with a low slope, one with a high slope, and one with a low slope but a higher pressure at the ankle. The tests were carried out by determining capillary filtration rate (CFR) with air-plethysmography (APG) while wearing the stockings. RESULTS: The mean value of the CFR without wearing a stocking was 4.65 ml/min (SD = 1.68), with Compriform (low slope, 30 mmHg) the mean CFR was 3.54 ml/min (SD = 1.22), with Bellavar (high slope, 30 mmHg) a mean CFR of 3.15 ml/min (SD = 1.17) was found, and the mean CFR related to Fast-fit (low slope, 34.5 mmHg) was 3.02 ml/min (SD = 1.12). There is a highly statistically significant difference in CFR between no stockings and wearing a stocking (paired Student's t-test; P < 0.01). Regarding the individual stocking, there is a highly statistically significant difference in CFR between the Compriform and the other two stockings (paired Student's t-test; P < 0.01). Between Bellavar and the Fast-fit the difference was not statistically significant. CONCLUSIONS: There is a statistically significant difference in CFR, and consequently in the development of edema, between not wearing an elastic compression stocking and wearing an elastic compression stocking. There is also a statistically significant difference in CFR between elastic compression stockings with the same compression, but a low slope profile and a high slope profile. Stockings with a low slope, but a higher compression may perform as well as stockings with a higher slope but a lower compression in reducing the CFR. In patients with a strong tendency to develop edema it may be advisable to prescribe stockings with a high slope profile.

Adult↗

PubMed2004

Graduated compression stockings (20-30 mmHg) do not compress leg veins in the standing position.

BACKGROUND: Since graduated compression stockings (GCS) reduce the risk of deep venous thrombosis (DVT) in both hospital and ambulant patients, we checked the compressive efficiency of 20-30 mmHg GCS in the standing position. METHODS: In 30 volunteers (17 normal legs, 13 varicose legs), duplex ultrasound was used to measure the internal diameters of the long saphenous vein, posterior tibial veins, peroneal veins, and soleal veins in the lying and standing position and with and without 20-30 mmHg GCS. RESULTS: Graduated compression stockings effectively compressed both superficial and deep veins in supine individuals but not the superficial or the deep veins when standing. In the varicose leg, the stockings did not compress the long saphenous vein at the mid-calf level even when supine. In the varicose leg the long saphenous vein was constricted at the upper band of the stocking, which might explain why superficial venous thrombosis is more common when compression stockings are worn. CONCLUSIONS: In the standing position, GCS did not compress the deep or superficial veins of the calf.

Bandages↗

PubMed1991

The influence of elastic compression stockings on deep venous hemodynamics.

To determine the effect of elastic compression stockings on deep venous hemodynamics we measured ambulatory venous pressure, venous refill time, maximum venous pressure with exercise, amplitude of venous pressure excursion, and duplex-derived common femoral and popliteal vein diameter and peak flow velocities with and without stockings in 10 healthy subjects and 16 patients with chronic deep venous insufficiency. The effects of below-knee and above-knee 30 to 40 torr and 40 to 50 torr gradient stockings were studied. Despite documentation of substantial stocking compressive effects by skin pressure measurements, neither below-knee or above-knee elastic compression stockings significantly improved ambulatory venous pressure, venous refill time, maximum venous pressure with exercise, or the amplitude of venous pressure excursion in healthy patients or in patients with deep venous insufficiency (p greater than 0.05). In patients with deep venous insufficiency stockings modestly increased popliteal vein diameter and flow velocity in the upright resting position (p less than 0.02). After tiptoe exercise without stockings deep venous peak flow velocity increased in healthy patients and in patients with deep venous insufficiency by a mean of 103% in the popliteal vein and 46% in the common femoral vein (p less than 0.01). With the application of elastic compression stockings only modest augmentation of deep venous flow velocity occurred in both groups above that seen in the bare leg after exercise. Thus elastic compression stockings did not improve deep venous hemodynamic measurements in patients with deep venous insufficiency. The beneficial effects of stockings in the treatment of deep venous insufficiency must relate to effects other than changes in deep venous hemodynamics.

Adult↗

PubMed1997

Pressure differences of elastic compression stockings at the ankle region.

BACKGROUND: Elastic compression stockings are widely used medical devices for the prevention of edema and treatment of venous diseases. Many beneficial effects have been described in the past. The exact amount of pressure underneath elastic compression stockings at different areas of the leg remains controversial. OBJECTIVE: To examine the pressure at the skin underneath class II elastic compression stockings at different places around the ankle at the B level. METHODS: Patients with known venous insufficiency and regularly using class II elastic therapeutic compression stockings (25-35 mm Hg) for venous diseases were included. All subjects were wearing completely new stockings at the time of the study. Measurements were performed with an electropneumatic interface pressure measuring device (Oxford Pressure Monitor MK II) with inflatable small sensoring cells. Six sensors were placed around the smallest circumference at the ankle (B-area). The highest and lowest recordings as well as the means were evaluated. RESULTS: The mean pressure of class II elastic stockings measured around the ankle was 24.7 mm Hg (SD, 8.4). The lowest pressures were found at the medial site (18.3 mm Hg; 74% of the mean), and the highest at the pretibial zone (33.9 mm Hg, 137%). CONCLUSIONS: The pressure exerted by pressure class II elastic compression stockings a the medial site just above the ankle (B area) is too low to have influence and improve the venous insufficiency. For phlebology this is the target area. It might be a reason for the high recurrence rate of venous ulcers even if patients wear stockings. Also, the mean pressure of class II stockings was found to be below the normal levels of its pressure class (25-35 mm Hg according to the European CEN classification). The results advocate the use of pressure class III elastic compression stocking more often and the use of pelottes or foam pads.

Ankle↗

PubMed1992

Do graduated compression stockings and pneumatic boots have an additive effect on the peak velocity of venous blood flow?

Graduated compression stockings and intermittent pneumatic compression boots reduce the incidence of deep vein thrombosis. Recent studies suggest that the simultaneous use of these devices may have a synergistic prophylactic effect; however, conflicting reports also exist. Using duplex imaging, we analyzed the effect on peak venous velocity in the superficial femoral vein produced by the individual and simultaneous use of graduated compression stockings and intermittent pneumatic compression boots. Normal volunteers and postoperative patients were examined. The use of intermittent pneumatic compression boots significantly increased the peak venous velocity relative to rest, whereas the use of graduated compression stockings did not alter the peak venous velocity. Also, the addition of graduated compression stockings to legs already being treated with intermittent pneumatic compression boots did not produce a further augmentation of peak venous velocity. This study demonstrates that the simultaneous use of graduated compression stockings and intermittent pneumatic compression boots does not produce a synergistic augmentation of peak venous velocity in the superficial femoral vein.

Bandages↗

PubMed2001

Venous haemodynamics and the effects of compression stockings.

Over the years, graduated compression stockings exerting varying ankle pressures have been used with differing degrees of effectiveness in the prevention of deep venous thrombosis and ulcer recurrence, and the treatment of venous ulceration (Stemmer et al, 1980; Partsch and Horakova, 1994; Veraart et al, 1997). Whether in the hospital or community setting, nurses often have the responsibility of measuring the limb and fitting the compression stocking on the patient and it is he/she who often influences the patient on the type of stocking and level of compression required. Understanding the influence of graduated compression on the venous haemodynamics of the lower limb and having a good working knowledge of the claims of the manufacturers as to expected levels of compression from each garment will aid the nurse and patient in decision making. An awareness of the hazards of inappropriate use of compression therapy should ensure that the nurse is a safe practitioner.

Bandages↗

PubMed1995

[A comparison of compression stockings of different pressures with lower leg edema in spinal cord injury or lesions patients].

We tested 80 spinal cord injury or lesion patients admitted to Department of Rehabilitation Medicine of Chang Gung Memorial hospital from Jan, 1994 to Aug, 1994, in order to assess the effectiveness of compression stockings of different pressures. The study group consisted of patients who, after leaving bed for 4 hours, had a volume change in the lower extremities greater than 50 c.c., as measured by a specially designed water bucket. One of the lower limb was used as the control group and the other limb was used as the experimental group. Different stocking compression pressure, 12 mmHg 20 mmHg, and 30 mmHg, were used for the experimental limb. No placebo stocking was used in the control group. Change in the lower limb volume and degree of comfort after leaving bed for 4 hours were measured. The experimental results reveal that wearing stocking with compression pressure, 12 mmHg, 20 mmHg, 30 mmHg, had therapeutic effects (P < 0.01). The therapeutic effects of the 12 mmHg stocking was less than the 20 mmHg and 30 mmHg stocking. There was no significant difference between the therapeutic effects of the 20 mmHg and 30 mmHg stocking. As for the degree of comfort, 12 mmHg was better than 20 mmHg, and 20 mmHg better than 30 mmHg. When choosing the type of compression stocking to treat lower leg edema in spinal cord injury or lesion patients, we suggest starting with 20 mmHg compression pressure stockings would be a better choice, as they are cheaper, more comfortable to wear and can provide the same therapeutic effects as 30 mmHg compression stockings.

Adult↗

PubMed1997

[Dynamic in vivo skin pressure measurement in quality control of compression stockings].

The well-documented positive effect of compression stocking therapy on the venous macro- and microhemodynamics of the legs can only be attained if the stockings fit well. In order to determine the effective pressure exerted by compression stockings, we usually deleted in US journals. One can get this out of journal and author's address have developed a new measuring method based on piezoresistant microprobes and a microprocessor unit. With our 2-mm-thick, 5-mm diameter probe, the pressure between the compression stocking and skin can be measured at any location desired. A temporal resolution of 50 Hz makes it possible to carry out dynamic measurements while the patient is walking or performing exercises on tiptoes. Here we present 4 typical cases out of a total of over 80 which we have evaluated. We have decided empirically that the pressure exerted by a class-2 compression stocking on the skin at the height of the ankles (b-position) should not exceed 70 mm Hg while resting and a peak of 110 mm Hg while exercising on tiptoes. At the middle of the calf (c-position) these values should not exceed 60 mm Hg at rest and 80 mm Hg on tiptoes. The pressure should decrease from the distal to proximal direction in order to produce a drainage gradient. We have found empirically that a pressure gradient of 30-40% from the b to the c measurement is favorable. Too high a proximal pressure or too high a pressure on a part of the lower leg causes pain and swelling. Too low a pressure, on the other hand, does not produce the desired vascular effect and alleviation of symptoms. Although dynamic pressure measurements take about 20-30 minutes per leg, they markedly improve patient compliance with compression therapy.

Adult↗

PubMed2001

Graduated compression stockings: knee length or thigh length.

The mechanisms by which graduated compression stockings prevent deep venous thrombosis are not completely understood. In the current study the physiologic effect of low-pressure graduated compression stockings on the venous blood flow in the lower limb and the practical aspects of their use were assessed. Patients having elective orthopaedic surgery at a university orthopaedic department were randomized into five groups to wear two different types of graduated compression stockings in thigh and knee lengths. Patients in the fifth control group did not wear graduated compression stockings. Venous occlusion strain gauge plethysmography was used to measure venous flow. After 20-minutes bed rest there was a highly significant increase in venous capacitance and venous outflow in patients in all of the four groups wearing stockings. There was no difference in the mean of the percentage change of venous capacitance in patients in the four groups wearing stockings. The knee length Brevet stockings were less efficient in increasing the venous outflow. There was no significant change in the venous capacitance and venous outflow in patients in the control group. Visual assessment of the fit and use of stockings was done, and patients' subjective opinion of comfort was sought. The knee length graduated compression stockings wrinkled significantly less, and significantly fewer patients reported discomfort with them. All stockings were reported to be difficult to use. Thigh and knee length stockings have a significant effect on decreasing venous stasis of the lower limb. Knee length graduated compression stockings are similarly efficient in decreasing venous stasis, but they are more comfortable to wear, and they wrinkle less.

Bandages↗

PubMed1996

Effects of medical elastic compression stockings on interface pressure and edema prevention.

BACKGROUND: Although medical elastic compression stockings are widely used in venous diseases their effects on the venous system are still largely unclear. OBJECTIVE: To evaluate the pressure of these medical elastic compression stockings on the skin and their edema protective effects. METHODS: On 18 legs the interface pressure of the stocking on the skin was measured with the aid of an interface pressure measuring instrument (Oxford Pressure Monitor). Five different kinds of medical elastic compression stockings were used. On 11 legs the edema protective effects of the different stockings was evaluated with the use of air-plethysmography. RESULTS: All medical elastic compression stockings used in this study, especially the flat-knitted, showed a good pressure gradient from the B1 level upwards. High pressures were measured at the dorsal foot and the pre-tibial zone. During cuff inflation a special edema protective effect was found in the round-knitted class II stockings. CONCLUSIONS: All class II and III medical elastic compression stockings used in this study have a sufficient pressure (especially class III) and pressure gradient for the treatment of patients with chronic venous insufficiency. Especially round-knitted stockings revealed high pressures on the danger areas such as the dorsal foot. All class II and III stockings provided an effective edema preventive effect; the round-knitted stockings have the best performance, due to their rubber components.

Aged↗

PubMed2002

Compression stockings and venous function.

HYPOTHESIS: Surgical compression stockings measurably improve venous physiologic mechanisms, and stocking brands do not differ from one another. METHODS: Eleven patients, (8 men and 3 women [mean age, 53 years]), were included. Six patients had primary venous insufficiency and 5 patients had secondary venous insufficiency; 5 patients were in CEAP class 4 and 6 were in CEAP class 5. Patients were randomly assigned to a sequence of 4 brands of knee-high, open-toe, 30- to 40-mm Hg stockings. Each patient wore a stocking for a 1-month equilibration period, then a different stocking monthly for 4 months in a row. Air plethysmography examinations were performed with and without stockings before and after each month of wear. Patients filled out a daily stocking record log and a monthly satisfaction survey. Stockings underwent compression testing after use. RESULTS: Stockings controlled reflux better than they improved calf muscle pump function. With stockings on, patients in CEAP 4 benefited more than those in CEAP 5 in decreasing reflux, while patients in CEAP 5 benefited more than those in CEAP 4 in improving calf muscle pump function. Changes in residual volume fraction were improved in patients in CEAP 5 wearing stockings but not in patients in CEAP 4. Patients with primary disease had greater volumes of reflux and calf ejection than with secondary disease. There were no hemodynamic differences between stocking brands but there were differences in patient compliance and acceptance. CONCLUSIONS: Surgical support stockings seem to be more effective in controlling reflux than in improving calf muscle pump function. All stocking brands function equally as measured by air plethysmography.

Bandages↗