Proximal interphalangeal joint fractures treated with a dynamic external fixator: A multicenter and retrospective study of 88 cases

Ligamentotaxis is now a well-established treatment method for proximal interphalangeal (PIP) joint fractures. Despite satisfactory results, the technique is considered complex and the devices cumbersome. The aim of this study was to evaluate a miniaturized dynamic external fixator (Ligamentotaxor(®)) for the management of these fractures. Eighty-six patients with 88 fractures of the PIP joint were treated at 10 European hand surgery centers. The device was applied within eight days of the injury and was removed 40-45 days after the injury. Treatment complications included superficial infection (4 cases), osteoarthritis (1 case), and localized but resolving complex regional pain syndrome (4 cases). The fracture healed in all cases. At final follow-up (mean: 15.2 months), average range of motion was 70° (range: 0-110°). Functional results were comparable between the 10 participating centers. Pain occurred upon exertion in 47% of the patients, 40% were sensitive to weather changes and 26% experienced constant pain. The mean QuickDASH score was 15.7 (range: 11-37) and 83.7% of the patients had no limitations during their daily activities. The results of this series are similar to those reported in other studies of PIP fracture treatment with external fixators. This technique is reliable and reproducible. The device is easy to handle by surgeons and well tolerated by patients. We think that this simple, reliable technique could be relevant for the management of PIP joint fractures.

[Perforator propeller flap for cutaneous coverage of the knee]

Previous pedicled techniques for coverage of the knee use muscular flaps and/or local fascio-cutaneous flaps limited to rotate until 90° on their cutaneous base. Freestyle perforator flaps match the patient's anatomy to fill a defect. Propeller perforator flaps have been used to treat three patients presenting with a skin loss over the knee. The surgery is based on the Echo-Doppler tracing the good perforator vessels around the wound. We performed two supero-medial flaps with a self-closing donor site and one supero-lateral flap where a graft was needed. All the patients healed in less than six weeks, with satisfying functional and esthetical results. We think freestyle perforator flaps are a reliable and predictable technique with a low morbidity rate and they are well adapted to cover skin defects over the knee.

[Chromic acid burns: systematic prevention of systemic toxicity]

Chromic acid burns can lead to systemic toxicity by cutaneous absorption of the chrome seen surfaces more than 1% of the total body surface area. In order to illustrate the necessity of anticipate systematically this toxicity by a specific treatment, we describe the case of a patient with systemic toxicity in the least severe situation of chromic acid burn: the chromic acid was diluted to 0,02%, the burn was superficial second degree, both thermic and chemical, on the forearm, and extended only to 1% of the total body surface area. In spite of the specific treatment, our patient had a blood transfer of the chrome, however without any consequences on the renal and hepatic functions. He cicatrised in 2 weeks, and his blood and urinary chromium levels were normalised in 3 weeks. Without this specific early treatment, what would have been the consequences of a systemic toxicity even more important?

The role of clinical opinion leaders in guideline implementation and quality improvement

BACKGROUND

The lag between the publication of clinical and health-services research and the application of this information is substantial and delays health-care improvement. A wide range of corrective strategies are being used to address this issue.

OBJECTIVES

Evolution in the use of significant opinion leaders is described. Hospital quality improvement projects, undertaken by the Healthcare Education and Research Foundation (HERF), are used to illustrate the roles assumed by clinical opinion leaders. Specific theoretical frameworks are reviewed that are fundamental to successful implementation of opinion leader strategies, as well as key research on the use of clinical opinion leaders.

RESULTS

Over the past 12 years, HERF has identified the need to address not only the information needs of clinicians and organizations but also the social and organizational factors that interfere with the application of research and guidelines. The complexity of this task cannot be underestimated. However, armed with well-developed guidelines and the opportunity to work within structured guideline implementation programs with well-defined objectives and systematically applied methods, HERF's experience suggest local clinicians and communities can meet this challenge.

Effect of local medical opinion leaders on quality of care for acute myocardial infarction: a randomized controlled trial

CONTEXT

The effectiveness of recruiting local medical opinion leaders to improve quality of care is poorly understood.

OBJECTIVE

To evaluate a guideline-implementation intervention of clinician education by local opinion leaders and performance feedback to (1) increase use of lifesaving drugs (aspirin and thrombolytics in eligible elderly patients, beta-blockers in all eligible patients) for acute myocardial infarction (AMI), and (2) decrease use of a potentially harmful therapy (prophylactic lidocaine).

DESIGN

Randomized controlled trial with hospital as the unit of randomization, intervention, and analysis.

SETTING

Thirty-seven community hospitals in Minnesota.

PATIENTS

All patients with AMI admitted to study hospitals over 10 months before (1992-1993, N=2409) or after (1995-1996, N=2938) the intervention.

INTERVENTION

Using a validated survey, we identified opinion leaders at 20 experimental hospitals who influenced peers through small and large group discussions, informal consultations, and revisions of protocols and clinical pathways. They focused on (1) evidence (drug efficacy), (2) comparative performance, and (3) barriers to change. Control hospitals received mailed performance feedback.

MAIN OUTCOME MEASURES

Hospital-specific changes before and after the intervention in the proportion of eligible patients receiving each study drug.

RESULTS

Among experimental hospitals, the median change in the proportion of eligible elderly patients receiving aspirin was +0.13 (17% increase from 0.77 at baseline), compared with a change of -0.03 at control hospitals (P=.04). For beta-blockers, the respective changes were +0.31 (63% increase from 0.49 at baseline) vs +0.18 (30% increase from baseline) for controls (P=.02). Lidocaine use declined by about 50% in both groups. The intervention did not increase thrombolysis in the elderly (from 0.73 at baseline), but nearly two thirds of eligible nonrecipients were older than 85 years, had severe comorbidities, or presented after at least 6 hours.

CONCLUSIONS

Working with opinion leaders and providing performance feedback can accelerate adoption of some beneficial AMI therapies (eg, aspirin, beta-blockers). Secular changes in knowledge and hospital protocols may extinguish outdated practices (eg, prophylactic lidocaine). However, it is more difficult to increase use of effective but riskier treatments (eg, thrombolysis) for frail elderly patients.

The effect of comorbidity on use of thrombolysis or aspirin in patients with acute myocardial infarction eligible for treatment

OBJECTIVE

Growing evidence indicates that life-sustaining therapies for the treatment of acute myocardial infarction (AMI) are underused among patients eligible for therapy, including the elderly and women. We examined the effect of a patient's comorbidity burden on use of these highly effective therapies in eligible populations of individuals with AMI.

DESIGN

Retrospective cohort design.

SETTING AND PATIENTS

We reviewed the medical records of 2,409 individuals at 37 Minnesota hospitals from October 1992 through July 1993 with an admission diagnosis of AMI, suspected AMI, or rule-out AMI, who met electrocardiographic, laboratory, and clinical criteria for AMI.

MEASUREMENTS AND MAIN RESULTS

Using multivariate logistic regression models, we determined the association between a validated comorbidity measure and the proportion of eligible patients who received thrombolysis or aspirin. Controlling for other factors previously reported to influence rates of study treatment, the odds of receipt of thrombolysis among patients with severe comorbidity was 0.49 (95% confidence interval [CI] 0.27, 0.88) when compared with individuals without such limitation. Similarly, the odds of aspirin treatment among study patients with severe comorbidity was 0.46 (95% CI 0.30 0.72), compared with individuals without severe comorbidity. We did not distinguish any differences in patterns of treatment with either study treatment among patients with mild or moderate comorbidity when compared with individuals without any concomitant comorbidity.

CONCLUSIONS

This study indicates that patients with severe mental and physical comorbidities are less likely to receive standard therapies for AMI recommended in national treatment guidelines.

Adherence to national guidelines for drug treatment of suspected acute myocardial infarction: evidence for undertreatment in women and the elderly

BACKGROUND

Evidence-based guidelines for the treatment of patients with acute myocardial infarction (AMI) have been published and disseminated by the American College of Cardiology and the American Heart Association. Few studies have examined the rates of adherence to these guidelines in eligible populations and the influence of age and gender on highly effective AMI treatments in community hospital settings.

METHODS

Medical records of 2409 individuals admitted to 37 Minnesota hospitals between October 1992 and July 1993 for AMI, suspected AMI, or rule-out AMI, and meeting electrocardiographic, laboratory, and clinical criteria suggestive of AMI were reviewed to determine the proportion of eligible patients who received thrombolytic, beta-blocker, aspirin, and lidocaine hydrochloride therapy. The effects of patient age, gender, and hospital teaching status on the use of these treatments were estimated using logistic regression models.

RESULTS

Eligibility for treatment ranged from 68% (n=1627) for aspirin therapy, 38% (n=906) for lidocaine therapy, and 30% (n=734) for thrombolytic therapy to 19% (n=447) for beta-blocker therapy. Seventy-two percent of patients eligible to receive a thrombolytic agent received this therapy; 53% received beta-blockers; 81% received aspirin; and 88% received lidocaine. Among patients ineligible for lidocaine therapy (n=1503), 20% received this agent. Use of study drugs was lower among eligible elderly patients, especially those older than 74 years (thrombolytic agent: odds ratio, 0.2; 95% confidence interval, 0.1 to 0.4; aspirin: odds ratio, 0.4, 95% confidence interval, 0.3 to 0.6; beta-blocker: odds ratio, 0.4; 95% confidence interval, 0.2 to 0.8). Female gender was associated with lower levels of aspirin use among eligible patients (odds ratio, 0.7; 95% confidence interval, 0.6 to 0.9); and there was a trend toward lower levels of beta-blocker and thrombolytic use among eligible women.

CONCLUSIONS

Use of lifesaving therapies for eligible patients with AMI is higher than previously reported, particularly for aspirin and thrombolytic use in nonelderly patients. Lidocaine is still used inappropriately in a substantial proportion of patients with AMI. Increased adherence to AMI treatment guidelines is required for elderly patients and women.

Value of transesophageal echocardiography as an adjunct to transthoracic echocardiography in evaluation of native and prosthetic valve endocarditis

To determine if transesophageal echocardiography provides better visualization of valvular vegetations than transthoracic echocardiography, we used both methods to evaluate 24 consecutive patients (mean age, 54 years; 15 female patients and nine male patients) referred for symptoms suggestive of infectious endocarditis. Ten of the 24 patients had one or more valvular prostheses. Echocardiograms were classified as positive or negative based on visualization of valvular vegetations or abscesses. Of ten patients with a final diagnosis of infectious endocarditis on extended follow-up, transthoracic echocardiography was positive in five patients. Transesophageal echocardiography not only yielded abnormal findings in all ten of these patients, but also revealed additional information in four of the five patients with abnormal transthoracic echocardiographic examinations. Among the 14 patients who, on subsequent follow-up, were found not to have infectious endocarditis, transthoracic echocardiography was normal in 13 and falsely abnormal in one. Transesophageal echocardiography revealed no evidence of infectious endocarditis in any of these patients. The ten patients who were determined to have infectious endocarditis all had positive blood cultures and no alternative cause for their clinical presentation; in seven patients in this group who underwent operative or postmortem evaluation, infectious endocarditis was confirmed. All patients without infectious endocarditis were demonstrated to have other causes for their clinical presentation. We conclude that transesophageal echocardiography is a highly valuable test in the work-up of patients with suspected infectious endocarditis, especially those patients with inconclusive or normal transthoracic echocardiograms. In addition, transesophageal echocardiography may be of benefit to patients with previously documented infectious endocarditis and a complicated clinical course in whom additional cardiac lesions are suspected but not demonstrated by transthoracic echocardiography.

Complete heart block complicating bacterial endocarditis

Among 142 cases of bacterial endocarditis (BE), complete heart block (CHB) was found in six cases (4%) and first-degree (1°) or second-degree (2°) A-V block in 14 cases (10%).

The aortic valve was involved in 18 of 20 cases with atrioventricular (A-V) conduction disturbance, including all six cases of CHB.

Anatomic observations (four autopsy, one operative) were made in five of the six cases of CHB. In these cases, a common finding, in addition to involvement of the aortic valve, was extension of the infection to adjacent structures resulting in cardioaortic fistulae. CHB likely resulted from extension of infection to the major conduction tissues.

Five of the six patients with CHB died suddenly while in the hospital. One patient was treated with electric pacing while the infection was being controlled and, 38 days later, underwent successful replacement of the aortic valve. Conduction abnormalities are important possible complications of aortic valvular BE. Prompt pacing may be a lifesaving procedure, allowing eradication of infection as a prelude to surgical therapy.