Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0011849 (diabetes)
 277,896 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Evaluation was done of 235 patients who had had 273 primary amputations for gangrene. Measurements of local skin-perfusion pressure or systolic blood pressure were made in 222 limbs (188 patients). For the other fifty-one limbs, for which no measurements of pressure were available, the surgeon elected to perform an above-the-knee amputation in nine of seventeen diabetic limbs and a below-the-knee amputation in eight. An above-the-knee amputation was selected by the surgeon for thirty-two of thirty-four non-diabetic limbs and a below-the-knee amputation, for two for which no measurements of pressure were available. Local skin-perfusion pressure was measured distal to the knee before amputation, using a standardized photoelectric technique in 203 limbs and systolic blood-pressure measurements in nineteen. Skin-perfusion pressure was also measured above the knee in seventy-six of the 222 limbs in which a pressure was determined below the knee. These measurements were made available to the surgeon for use as an adjuvant guide to clinical assessment in selecting the appropriate level of amputation. Seventy-four patients (ninety-two amputations) had diabetes and 114 patients (130 amputations) did not. The limbs of the diabetic patients had a significantly higher skin-perfusion pressure at the below-the-knee level (p less than 0.001) than did those of the non-diabetic patients. The ratios of below-the-knee to above-the-knee amputations for the diabetic and non-diabetic patients were 3.8 to one and 1.3 to one (p less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Results of amputation for gangrene in diabetic and non-diabetic patients. Selection of amputation level using photoelectric measurements of skin-perfusion pressure. 319 77

One hundred seventeen patients with threatened limb loss were evaluated. Seventy-three of these patients underwent vascular reconstruction. Diabetics had a significantly higher incidence of ischemic ulceration and gangrene when compared with nondiabetics. Nondiabetics typically presented with rest pain. The outcome of foot salvage surgery was evaluated by postoperative ankle-branchial indices as well as limb salvage rates. Ankle-brachial indices increased significantly in both groups. Fifty-five percent of the diabetics and 67 percent of the nondiabetics had a postoperative ankle-brachial index of 0.8 or greater. Overall foot salvage at 1 year was 84 percent. Foot salvage in patients with diabetes was 78 percent compared with 86 percent in nondiabetics. In this subset of patients with threatened limb loss confirmed by hemodynamic measurements, the results of vascular reconstruction were comparable in both diabetic and nondiabetic patients.
 ...
PMID:A comparison of diabetics and nondiabetics with threatened limb loss. 320 60

Sixty consecutive patients (66 legs) underwent surgical lumbar sympathectomy as the only therapy for severe lower limb ischaemia (pain at rest and/or frank gangrene) caused by arteriosclerosis in the period 1977 to 1982. After six months results were good, as defined by absence of pain at rest, healing of ischaemic lesions and no major amputation, in 48% of limbs and bad in all other limbs. Patients with rest pain only fared much better than those with gangrene: after six months a major amputation had to be performed in 14% and 45% respectively. The presence or absence of diabetes mellitus and palpable pulsations at knee level and the angiographic patterns were of no help in the prediction of the results of lumbar sympathectomy. Doppler ankle/arm indices did have predictive value, since in all limbs with Doppler indices lower than 0.30 a major amputation had to be performed. Lumbar sympathectomy still remains a useful procedure in the treatment of selected patients with severe lower limb ischaemia in which reconstructive surgery is not feasible. But it is only advocated in the presence of ankle/arm indices above 0.30 and in the absence of gangrenous lesions.
 ...
PMID:Lumbar sympathectomy for severe lower limb ischaemia: results and analysis of factors influencing the outcome. 328 42

The effect of 2 wk of topical hyperbaric oxygen (THO) treatment on the healing of diabetic foot ulcers without associated gangrene was evaluated in a prospective, controlled, and randomized manner in 28 patients. There were 12 patients in the THO group (group 1) and 16 in the control group (group 2). Clinical management of the two patient groups was similar except for THO treatment in the group 1 patients. Clinical parameters, including age, sex, baseline fasting serum glucose levels, duration of diabetes mellitus, duration of foot ulcers, presence of peripheral neuropathy or arterial insufficiency, and evidence of osteomyelitis as determined by radiographs and/or radionuclide scans, were comparable in both groups of patients. No statistical differences (Student's t test) were seen in the number of microorganisms isolated from curettage cultures of the base of the ulcer at days 0, 7, and 14 of the study between groups 1 and 2. In contrast to previous studies, there was a paucity of anaerobic microorganisms isolated from these foot ulcers without associated gangrenous changes. Ulcer areas were estimated by multiplying the maximum width by the maximum length in millimeters at days 0, 7, and 14. Analysis of variance and Student's t test revealed progressive significant reductions in the ulcer areas in both groups when days 0, 7, and 14 were compared and in ulcer depths in both groups when days 0 and 14 were compared. However, such ulcer size changes did not differ statistically between the control and THO groups. A trend toward slower healing was observed in the THO group. Healing of diabetic foot ulcers was not accelerated by THO in this study.
Diabetes Care 1988 Feb
PMID:Randomized controlled trial of topical hyperbaric oxygen for treatment of diabetic foot ulcers. 328 61

In the longitudinal Schwabing study, unselected insulin-treated diabetic patients were followed for major vascular complication (MVC) (stroke, myocardial infarction, gangrene) and asymptomatic, early detectable peripheral vascular disease (PVD). In the group of insulin-treated NIDDM multiple logistic regression analysis revealed the number of daily injected insulin units as a significant predictor for MVC and PVD (t = 1.98; p less than 0.04; x +/- S.D.: PVD yes 57.6 +/- 21.4 U/d; PVD no 44.3 +/- 17.7; age-adjusted univariate p less than 0.001). Daily insulin dose correlated highly significantly with serum triglycerides (r = 0.40, p less than 0.001) as well as with blood glucose (r = 0.33, p less than 0.001). These data suggest that insulin resistance is characteristic for atherosclerotic disease in NIDDM and the hyperinsulinemia-hypertriglyceridemia-syndrome might be a powerful cardiovascular risk factor in diabetes mellitus.
 ...
PMID:Daily insulin dose as a predictor of macrovascular disease in insulin treated non-insulin-dependent diabetics. 330 65

Controversy has surrounded the role of local hypothermia as a preoperative treatment in amputations of the lower extremity. A study was undertaken to determine the effectiveness of amputation under cryoanesthesia in decreasing postoperative morbidity and mortality in below-knee (BK) amputations. Of 154 BK amputations, only 91 with unreconstructable vascular disease, gangrene, or both, were included in this study. Group I consisted of 48 patients (mean age 63.9 years) who had undergone a routine BK amputation; group II consisted of 43 patients (mean age 65.7 years) who were acutely ill and too unstable to undergo a major surgical procedure. Group II patients were treated by amputation while under cryoanesthesia before any definitive operative intervention. The patients in group II were significantly (p less than 0.05) more ill preoperatively than those in group I. Group II patients had a higher prevalence of previous myocardial infarction, previous stroke, diabetes mellitus, osteomyelitis, and wet gangrene. Seventy percent of the patients in group II had three or more risk factors vs. 46% in group I. Early postoperative mortality rates did not differ significantly between groups (group I, 8%; group II, 9%); the average length of hospital stay for group I patients was 24.2 days compared with 17.7 days in group II. Group II patients sustained slightly more postoperative complications. Amputation under cryoanesthesia appears to be of value in reducing postoperative morbidity and mortality and length of hospital stay in the acutely ill patient with unreconstructable vascular disease, gangrene, or both.
 ...
PMID:Below-knee physiologic cryoanesthesia in the critically ill patient. 334 56

Two hundred forty-three bypasses to paramalleolar arteries were performed in 224 extremities of 208 patients since 1971; 166 were implanted in men (68%) and 77 in women (32%). The median age was 73 years. Gangrene (61%), nonhealing ulcer (15%), rest pain (22%), and trauma (2%) were the indications for bypass. Usual risk factors were noted: diabetes (65%), smoking (51%), heart disease (46%), and hypertension (45%). The extent of occlusive disease dictated three graft configurations: long grafts originating in arteries proximal to the adductor tendon (n = 111), short grafts originating at or below the popliteal artery (n = 88), and jump grafts originating near the distal end of a previous femorodistal bypass (n = 44). The association between diabetes (incidence 80%) and gangrene (75%) in patients with short grafts was statistically significant (p less than 0.01). The 2-year secondary patency rate of long in situ grafts was 92% compared with 72% for other autogenous vein long grafts. The limb salvage rate for all autogenous vein long grafts was 90% at 3 years. The secondary patency rate at 3 years for short grafts was 81% and the limb salvage rate was 80%. There were four amputations with patent grafts. Primary and secondary patency rates of jump grafts were similar (53%), whereas the limb salvage rate was 89% at 2 years. Patency and limb salvage rates of rarely employed nonautogenous conduits were less than 35% at 1 year (long grafts). Bypass grafts to the ankle and foot are effective and durable and should be performed with autogenous vein.
 ...
PMID:Bypass grafts to the ankle and foot. 337 20

Transcutaneous oxygen tension (tcPO2) of the legs and feet was measured at 37 and 44 degrees C in 21 patients with diabetes mellitus, 9 of whom had peripheral neuropathy. At 37 degrees C, tcPO2 in the legs and feet of diabetic patients with peripheral neuropathy was significantly higher (P less than .02) than in control subjects and diabetic patients without neuropathy. Whereas tcPO2 in the legs of control subjects and nonneuropathic diabetic patients was greater than in the feet (P less than .02), this leg-to-foot difference was absent in diabetic patients with neuropathy. After an increase in skin temperature to 44 degrees C, tcPO2 increased in the legs and feet of all three groups, but the increase was smallest in diabetic patients with neuropathy and greatest in control subjects. In neuropathic (P less than .02) and nonneuropathic (P less than .02) diabetic patients, tcPO2 was significantly lower than in control subjects. These data are consistent with a loss of vasoconstrictor tone in the blood vessels perfusing skin and subcutaneous tissue at 37 degrees C and an inability of these vessels to vasodilate and increase blood flow at 44 degrees C in diabetic patients in general and neuropathic diabetic patients in particular. This inability to increase tcPO2 after an increase in temperature and possibly other vasodilatory stimuli may contribute to the pathogenesis of nonhealing ulcers, protracted infections, and gangrene, which characterize the diabetic foot.
Diabetes 1988 Jun
PMID:Transcutaneous oxygen tension in legs and feet of diabetic patients. 338 79

Although ischaemic vascular disease is uncommon in Nigerians (diabetic and nondiabetic), foot gangrene of vascular origin still causes considerable morbidity in Nigerian diabetics. One known cause of vascular disease is lipid abnormalities. We therefore measured plasma lipid levels in diabetic patients with foot gangrene of vascular origin and compared those results with values in diabetics without gangrene and nondiabetic subjects, in relation to other variables such as glycaemic control, disease duration and body mass index. 45 noninsulin dependent diabetics (10 with foot gangrene) and 22 nondiabetic control subjects were studied. Those diabetics with gangrene had poorer (p less than 0.001) short-term glycaemic control (as assessed from fasting blood glucose levels) than those without, although longer-term control (HBA1C) was similar in both groups. Plasma triglyceride levels were significantly elevated in diabetics with or without gangrene (p less than 0.001) compared to nondiabetic subjects, while total cholesterol levels were high only in those with gangrene (p less than 0.02) who also had a longer disease duration. Plasma phospholipid and HDL-cholesterol did not differ significantly from control values. We therefore conclude that the raised plasma cholesterol and longer duration of diabetes in those diabetics with foot gangrene may have contributed to the genesis of vascular disease in those subjects.
 ...
PMID:Plasma lipid profiles and vascular disease in type 2 (non-insulin dependent) Nigerian diabetic patients. 340 12

To define the prevalence of large vessel disease in Ethiopian diabetic patients, the protocol of the World Health Organisation Multinational Study of Vascular disease in Diabetics was used in the Diabetic Clinic of Yekatit 12 Hospital, Addis Ababa: 221 of the possible 261 patients aged 35 to 54 years were examined during 6 months. One hundred seven were diagnosed diabetic 1 to 6 years before study, 74, 7 to 13 years and 40, 14 years or more before the study. Forty-two percent were taking insulin; 18% had retinopathy, 7% heavy albuminuria. Body mass index (BMI) of less than 18 kg/m2 was found in 13.6%; 6.4% of men had BMI more than 27 and 50% of women more than 25. Only 30 patients had ever smoked cigarettes. The plasma cholesterol was less than 6.72 mmol/l in 90% of the 221 patients. Vascular disease led to the diagnosis of diabetes in 3 patients. At study, 19.9% were hypertensive but only 5% at the time of diagnosis. Only 1 patient had had ischaemic gangrene, 1 a stroke, 4 intermittent claudication, 4 angina pectoris and 1 a myocardial infarction. Electrocardiograms, centrally Minnesota-coded in London, were interpreted as Coronary Disease Probable in only 6 patients, and Coronary Disease Possible in 25; the other 190 tracings were normal. It is concluded that macrovascular disease is uncommon in middle-aged Ethiopian diabetic patients in Addis Ababa.
 ...
PMID:Macrovascular disease in middle-aged diabetic patients in Addis Ababa, Ethiopia. 341 58


<< Previous 1 2 3 4 5 6 7 8 9 10