bluuebunny/crossref_metadata_2025_split huggingface dataset:
The prognosis of ileorectal anastomosis in Crohn's disease
Authors: Buchmann Peter , Weterman Irene T , Keighley Michael R B , Peña Salvador A , Allan Robert N , Alexander-Williams John 
Published: March 2007

Summary
A total of 105 patients have been treated with colectomy and ileorectal anastomosis from 1958 to 1978 in Birmingham, England (48) and in Leiden, Netherlands (57). At the end of 1978 the mean follow-up was 7.6 years (6 months–20 years).
Mild or moderate degrees of proctitis were not considered as contraindications for ileorectal anastomosis. The presence or absence of ileal disease or perianal disease at the time of ileorectal anastomosis did not affect the long term prognosis but patients with sigmoidoscopic proctitis appeared to fare less well (69 per cent still functioning) than those with an apparently normal rectum (87 per cent). However, no statistical significance was obtained.
The risk of reoperation for recurrence of Crohn's disease after ileorectal anastomosis calculated by actuarial methods shows a 50 per cent cumulative reoperation rate after 16–20 years. This result suggests that ileorectal anastomosis is a safe and useful procedure for most patients with Crohn's colitis who do not have severe proctitis.
Dissolution of common bile duct stones
Authors: Motson Roger W 
Published: March 2007

AbstractRetained common duct stones can now be treated by a number of non-operative techniques, including dissolution by cholesterol solvents, simple irrigation, stone extraction via the T tube tract and by endoscopic sphincterotomy. This paper reviews the various solvents available for stone dissolution and its physicochemical basis.When a retained stone is found simple irrigation with saline will be successful in about 50 per cent of patients. If this fails, stone extraction via the T tube tract or by endoscopic sphincterotomy are now the methods of choice, with a 90–95 per cent chance of success. Stone dissolution by cholic acid is slow and is only successful in about 60 per cent of patients but can be of value when stone extraction is unavailable or unsuccessful.
The effect of surgical drainage materials on colonic healing
Authors: Smith S R G , Connolly J C , Crane P W , Gilmore O J A 
Published: March 2007

Abstract
The effect of surgical drainage materials on rat colonic healing has been investigated in a prospective randomized and controlled study. Latex, silicone rubber (Silastic), polyvinylchloride (PVC) and polytetrafluoroethylene (Teflon) tubes were implanted alongside a colonic anastomosis and compared with a ‘no drain’ group using mechanical and histological assessments. There was a significant increase in anastomotic leakage in the latex group in which there appears to be a local inhibition of healing. Silastic, PVC and Teflon were not found to interfere with healing. The continued use of latex drains in colonic surgery is therefore questioned.
The mesorectum in rectal cancer surgery—the clue to pelvic recurrence?
Authors: Heald R J , Husband E M , Ryall R D H 
Published: March 2007

Abstract
Five cases are described where minute foci of adenocarcinoma have been demonstrated in the mesorectum several centimetres distal to the apparent lower edge of a rectal cancer. In 2 of these there was no other evidence of lymphatic spread of the tumour. In orthodox anterior resection much of this tissue remains in the pelvis, and it is suggested that these foci might lead to suture-line or pelvic recurrence. Total excision of the mesorectum has, therefore, been carried out as a part of over 100 consecutive anterior resections. Fifty of these, which were classified as ‘curative’ or ‘conceivably curative’ operations, have now been followed for over 2 years with no pelvic or staple-line recurrence.
The effect of local cooling on digital systolic pressure in patients with Raynaud's syndrome
Authors: Hoare M , Miles C , Girvan R , Ramsden J , Needham T , Pardy B , Nicolaides A 
Published: March 2007

Abstract
The effect of local controlled cooling on the digital systolic blood pressure in the hand was studied in 25 healthy volunteers and 25 patients with Raynaud's syndrome.
Arterial systolic pressure was indirectly measured using a digital cuff over the proximal phalanx and a photoplethysmographic probe over the digital pulp to detect pulsation. Pressures were measured after occlusion of the circulation (cuff at 180 mmHg) for 5 minutes with water circulating initially at 30°C and then at 10°C. An airfilled cuff was used simultaneously on a control finger. The digital systolic pressure at 10°C in the patients was significantly lower (P &lt; 0·001 Mann–Whitney U test) than in the normal volunteers whilst calculation of the percentage change in pressure induced by cooling the digit to 10°C allowed complete separation between both groups. The range in the controls was +2 per cent to −26 per cent and in the patients, −33 per cent to −100 per cent. The test gives reproducible results (coefficient of variation 5–11 per cent) and offers an objective method of identifying patients with excessive vasospasm due to a cold stimulus. It may prove useful in studying natural history and the effect of drug therapy.
Lower-limb revascularization and major amputation rates in England
Authors: McCaslin J E , Hafez H M , Stansby G 
Published: March 2007

AbstractBackgroundThe aim was to establish national data for lower-limb revascularization and major amputation procedures performed in England.MethodsData for lower-limb revascularization procedures and major amputations were collected from the Hospital Episode Statistics (finished consultant episodes) which is published yearly by the Department of Health. Transluminal procedures were analysed from 1998 onwards. Age adjustment was performed according to figures for the resident population of England in the interval studied.ResultsIn all age groups, revascularization rates initially increased to a peak in the mid-1990s. This was followed by a steady decline in procedures to the present day. However, amputations gradually increased in the 45–64-years age group and showed only a slight decline in the 65–74-years age group. Among patients aged over 75 years there was a marked decline from the mid-1990s to present-day. Data for diabetics showed similar trends.ConclusionThe national rate of amputation initially rose despite an increasing number of vascular interventions. It is significant, however, that among patients aged over 75 years this has been followed by a decrease in both revascularization procedures and amputation rates to present levels, the lowest for 14 years.
B-type natriuretic peptide predicts cardiac morbidity and mortality after major surgery
Authors: Gibson S C , Payne C J , Byrne D S , Berry C , Dargie H J , Kingsmore D B 
Published: March 2007

AbstractBackgroundThe objective of this study was to determine whether measurement of B-type natriuretic peptide (BNP) concentration before operation could be used to predict perioperative cardiac morbidity.MethodsA prospective derivation study was performed in high-risk patients undergoing major non-cardiac surgery, with a subsequent validation study. A venous blood sample was taken the day before surgery for measurement of plasma BNP concentration. Screening for cardiac events (non-fatal myocardial infarction and cardiac death) was performed using clinical criteria, cardiac troponin I analysis and serial electrocardiography.ResultsForty-one patients were recruited to the derivation cohort and 149 to the validation cohort. In the derivation cohort, the median (interquartile range) BNP concentration in the 11 patients who had a postoperative cardiac event was 210 (165–380) pg/ml, compared with 34·5 (14–70) pg/ml in those with no cardiac complications (P &lt; 0·001). In the validation cohort, the median BNP concentration in the 15 patients who had a cardiac event was 351 (127–1034) pg/ml, compared with 30·5 (11–79·5) pg/ml in the remainder (P &lt; 0·001). BNP concentration remained a significant outcome predictor in multivariable analysis (P &lt; 0·001). Using receiver–operator curve analysis it was calculated that a BNP concentration of 108·5 pg/ml best predicted the likelihood of cardiac events, with a sensitivity and specificity of 87 per cent each.ConclusionPreoperative serum BNP concentration predicted postoperative cardiac events in patients undergoing major non-cardiac surgery independently of other risk factors.
A Simple Fluorescence‐Spectroscopic Membrane Translocation Assay
Authors: Keller Sandro , Böthe Matthias , Bienert Michael , Dathe Margitta , Blume Alfred 
Published: March 2007

AbstractWe have established a combination of fluorescence‐spectroscopic uptake, release, and dilution experiments as a powerful tool for studying the translocation of fluorescent compounds across lipid membranes, demonstrating this through intrinsic tryptophan fluorescence for the interaction of the cell‐penetrating peptide penetratin with phospholipid membranes, for which conflicting results have been reported. We found that penetratin is not membrane‐permeant under the conditions used here. To confirm this finding and to validate the approach, we also employed an established titration‐calorimetric method, the results of which were in excellent agreement with a thermodynamic analysis of the fluorescence‐spectroscopic experiments. Further support was provided by a comparison with published data obtained under similar conditions by using a variety of techniques. Unlike these methods, however, the new approach allows consistent and simultaneous assessment of membrane binding and transbilayer movement without depending on extrinsic labels attached to the molecule of interest or on reporter moieties inserted into the lipid membrane.
Rotablator® induced “shave” of intraluminal cap exposing intramural plaque crater
Authors: Bucay Moises , Zacca Nadim M. , Trakhtenbroit Anatole D. , Asimacopoulos Panayiotis J. , Master Herbert , Raizner Albert E. 
Published: March 2007

AbstractA patient with recent onset of unstable angina was found to have a severe, eccentric stenosis of the proximal left anterior descending coronary artery. Rotational atherectomy was performed. After the first passage of the burr across the stenosis, an intraplaque crater was angiographically visualized. It is hypothesized that the patient's clinical presentation may be attributed to plaque rupture and formation of an intraplaque crater which was sealed by a fibrous cap. This cap was “shaved” by the rotating burr, exposing the crater. Adjunctive balloon dilatation expanded the true lumen and compressed the crater.
Percutaneous transluminal coronary angioplasty of coronary artery embolism
Authors: Mamby Sylvia A. , Spears J. Richard 
Published: March 2007

AbstractA 35‐yr‐old woman with known valvular heart disease presented with acute myocardial infarction. Angiography demonstrated a totally occluded distal left anterior descending coronary artery. Though initially successful, angioplasty ultimately failed to maintain arterial patency, leaving a more distal total occlusion after several balloon inflations. In spite of this, PTCA possibly provided a more localized infarction via a peripheral mobilization of the embolus.
Delayed resolution of obstructing thrombus following acute closure
Authors: Marshall James , Mercuro John , Ogilby J. David , Untereker William J. 
Published: March 2007

AbstractA case of acute thrombotic closure following percutaneous coronary angioplasty demonstrating delayed clearance of obstructing thrombus is reported. Although common in other clinical scenarios this has not been reported following coronary angioplasty.
Angiographic identification of malpositioned balloon catheters during mitral valvuloplasty
Authors: Tatineni Satyanarayana , Kern Morton J. , Aguirre Frank , Donohue Thomas , Bell Calvin 
Published: March 2007

AbstractThe positioning of balloon catheters for the percutaneous mitral valvuloplasty technique is critical to ensure an adequate result and minimize complications. Passage of two balloon catheters in parallel through a thickened atrial septum and maintenance of satisfactory positioning in the left ventricle can be difficult. We describe unsuspected mal‐positioning of the balloons in two patients documented angiographically in our laboratory. Recognizing and avoiding these positions will reduce the potential for serious complications.
Ventricular relaxation and myocardial ischemia: A comparison of different models of tau during coronary angioplasty
Authors: Simari Robert D. , Bell Malcolm R. , Schwartz Robert S. , Nishimura Rick A. , Holmes David R. 
Published: March 2007

AbstractThis study compares the sensitivity and variability of four models of tau, the time constant of ventricular relaxation, to detect the presence of myocardial ischemia. High fidelity left ventricular pressure recordings were obtained in ten patients undergoing coronary angioplasty at baseline, during balloon inflation, and at recovery. Four models of tau were considered: (1) a semilogarithmic, zero asymptote model (TL), (2) a semilogarithmic model using data from the first 40 ms of isovolumic relaxation (T40), (3) an exponential non‐zero asymptote model (Te), and (4) a derivative non‐zero asymptote model (TD). TL, T40, and TE increased significantly during inflation and returned to near baseline values at recovery. TD showed no change during inflation. Comparisons of TL, T40, and TE using the derived relaxation half‐time (T1/2), failed to reveal significant differences between the models at baseline, during inflation, or at recovery. The non‐zero asymptote models were associated with a greater beat‐to‐beat variability than the semilogarithmic models. Thus, T1/2 using the semilogarithmic zero asymptote models (TL and T40) may be more useful and consistent when measuring the rate of isovolumic relaxation during myocardial ischemia.
Coronary stenting with a balloon‐expandable stent after the recanalization of chronic total occlusions
Authors: Maiello Luigi , Colombo Antonio , Almagor Yaron , Bouzon Ricardo , Thomas Jack , Zerboni Santo , Finci Leo 
Published: March 2007

AbstractTo diminish the restenosis rate after successful recanalization of chronic total coronary occlusion, we have implanted the Palmaz‐Schatz stent in 6 patients. All procedures were successfully done without major complications. The angiographic follow‐up at 6 months showed restenosis in one asymptomatic patient who had had 2 stents implanted. Five other patients had no evidence of restenosis.
Intracoronary stent implantation via the brachial approach: A technique to reduce vascular bleeding complications
Authors: Heuser Richard R. , Mehta Stephen S. , Strumpf Robert K. , Ponder Regina 
Published: March 2007

AbstractTo reduce the incidence of vascular complications of intracoronary stent implantation, we used the brachial approach. We attempted implantation of the Palmaz‐Schatz stent via the brachial artery approach at 10 lesions in 9 patients. Stent delivery was successful at 8 lesions. Balloon angioplasty was successfully performed in the 2 failed cases, 1 of whom required surgical repair of the brachial artery. Intravenous anticoagulation was uninterrupted from the time of stent placement until therapeutic prothrombin times from oral warfarin therapy were obtained. Neither acute nor long‐term major bleeding occurred in the 9 patients. There were no embolic events, myocardial infarctions, or deaths. One subacute thrombosis occurred, and the patient underwent bypass surgery. To evaluate the risks and benefits of the brachial approach, we compared these 9 patients with 41 who had stent placement by the femoral approach during the same period. Lesion characteristics were similar in these 2 groups. There were no significant differences in the success rate or angiographic outcome between the 2 groups. Seven (17%) patients in the femoral group had vascular access complications requiring surgery, compared with 1 (11%) in the brachial group. No patient in the brachial group required transfusion, compared with all 7 of the patients who had femoral vascular complications. The potential reduction in bleeding complications makes the brachial approach to stent implantation attractive in selected patients.
Left ventricular perforation during percutaneous balloon mitral valvuloplasty
Authors: Manga Pravin , Singh Surendra , Brandis Simca 
Published: March 2007

AbstractPercutaneous balloon mitral valvuloplasty has been reported to be complicated by left ventricular perforation with fatal results. We report two cases of left ventricular perforation following balloon mitral valvuloplasty. In one patient left ventricular perforation occurred silently without any hemodynamic sequelae and was only detected at left ventricular angiography after valvuloplasty. In the second patient left ventricular perforation was caused by the mitral dilating balloon catheter. The subsequent tamponade was relieved by immediate aspiration with hemodynamic stabilization thereafter. Neither patient required surgery. Both patients are well 6 mon after the procedure. We discuss the mechanism of this serious complication in these two patients.
Symptomatic angina secondary to coronary‐subclavian steal syndrome treated successfully by percutaneous transluminal angioplasty of the subclavian artery
Authors: Feld Harry , Nathan Paul , Raninga Dilsukh , Shani Jacob 
Published: March 2007

AbstractSubclavian artery stenosis causing severely symptomatic angina in a patient with a previous left internal mammary artery bypass to the left anterior descending artery was treated successfully with percutaneous transluminal angioplasty. Baseline arteriography clearly revealed subclavian and coronary steal by evidence of competitive flow of nonopacified blood from the left vertebral artery. Although there was a difference of only 15 mm Hg between the right and left brachial arteries, there was a palpable difference in the upstroke of these pulses. The stenosis in the subclavian artery was successfully dilated with percutaneous transluminal angioplasty. Angiographic evidence of subclavian steal resolved following balloon dilatation, and the patient's angina was completely resolved. © 1992 Wiley‐Liss, Inc.
Coronary angioplasty using an over‐the‐wire balloon catheter through a new 6 french guiding catheter
Authors: Ueno Katsumi , Kotoo Yasunori , Arai Masazumi , Matsubara Tetsuo , Watanabe Sachiro , Ito Hiroyasu , Hirakawa Senri 
Published: March 2007

AbstractA new 6 French (F) guiding catheter with a large, teflon‐coated internal lumen (4.2F) was developed, permitting use of the standard ultralow profile (< 3F) over‐the‐wire system. This small coronary angioplasty system (6F‐PTCA) was evaluated in 48 lesions in 45 of 137 patients (33%) who underwent coronary angioplasty between September 1990 and January 1991. The mean age was 64 years (range 49 to 82); 37 (82%) were male. The procedure was via the brachial artery in 28 patients (62%). The overall primary success rate was 96%. It was 100% via the brachial artery and 90% via the femoral artery. There were no major complications. The puncture compression time with the 6F‐PTCA via the brachial artery and via the femoral and with 8F‐PTCA via the femoral was 3.8, 9.6, and 16.9 hr, respectively (P<0.001), although the procedure time of the 6F‐PTCA via brachial and via femoral and of the 8F‐PTCA was not significantly different. The mean hospital stay was 3.1, 4.5, and 5.5 days, respectively (P<0.01). A small hematoma occurred in 2 patients (4.4%) after the 6F‐PTCA and in 3 (3.3%) after 8F‐PTCA, and a large hematoma (>5 cm) was noted in 7 patients (7.6%) after 8F‐PTCA. These results indicate that coronary angioplasty using the over‐the‐wire system through the new 6F guiding catheter is technically feasible. Moreover, this approach, especially when advanced via the brachial artery, could shorten the he‐mostasis time and facilitate early ambulation. © 1992 Wiley‐Liss, Inc.
Mobile cardiac catheterization laboratories
Authors: Goss Jerome E. , Cameron Airlie 
Published: March 2007

AbstractThe Society of Cardiac Angiography and interventions proposed guidelines for the establishment of mobile cardiac catheterization laboratories. These laboratories should be established only in areas with genuine need, preferably as determined by an objective medical authority. Safety of the patient should be of paramont importance and specifications as to the selection of patients, transportation of patients with complications, the relationship to a tertiary care center, and quality assurance mechanisms are all addressed. © 1992 Wiley‐Liss, Inc.
Echocardiographic and angiographic evaluation of left ventricular function during percutaneous transluminal aortic valvuloplasty
Authors: Sack Stefan , Henrichs Karl Jürgen , Erbel Raimund , Wittlich Norbert , Meyer Jürgen 
Published: March 2007

AbstractTransesophageal echocardiography was used to study the effect of the balloon inflation on left ventricular function in 20 patients with critical aortic stenosis undergoing balloon valvuloplasty. Balloon inflation caused an increase of end‐diastolic (15% to 34%) and end‐systolic (57% to 72%) left ventricular volume. Left ventricular wall stress increased from 30 ± 10 × 103 dyn/cm2 at diastole and 121 ± 40 × 103 dyn/cm2 at systole to 44 ± 11 × 103 dyn/cm2 and 191 ± 55 × 103 dyn/cm2, respectively, when the balloon was inflated (P < 0.05). Turbulent regurgitant jet across the mitral valve increased from 15 ± 2% to 25 ± 3% during balloon inflation (P < 0.01). Continued monitoring of left ventricular function after balloon deflation demonstrated prolonged enlargement of left ventricular volumes. Our data show that balloon inflation causes an increase of left ventricular volume and impairment of contraction. Increase of left ventricular wall stress–associated with a reduction of coronary blood flow, due to lower aortic pressure–could result in ischemic myocardial injury. © 1992 Wiley‐Liss, Inc.
Mechanical right coronary artery shortening and vessel wall invagination: A fourth cause of latrogenic coronary obstruction during coronary angioplasty. A case report and review of the literature
Authors: Shea Patrick J. 
Published: March 2007

AbstractCoronary spasm, dissection, and localized thrombosis are recognized sources of iatrogenic obstruction during coronary angioplasty. A fourth important cause is reported, namely, guidewire‐induced mechanical straightening and shortening of tortuous right coronary artery resulting in the invagination of redundant vascular tissue. Reversal is achieved with guidewire retraction. Recognition of this entity is crucial to avoid unnecessary and potentially harmful intervention. © 1992 Wiley‐Liss, Inc.
Initial experience with a new compression device for hemostasis after femoral arterial puncture
Authors: Roth Robert , Modrosic Karen , Brown Matt , Kern Morton J. 
Published: March 2007

AbstractWe evaluated a new hemostasis device to maintain focused pressure over the femoral artery puncture site for 2–6 hours in 330 cases after diagnostic catheterization or coronary angio‐plasty. No patient developed later hematoma or vascular complications. The initial favorable experience suggests that this hemostasis device has advantageous features of stability and site visualization and is a suitable adjunct to current methods of maintaining puncture site pressure after brief manual compression following arterial catheterization. © 1992 Wiley‐Liss, Inc.