Anitha Rajamanickam

Thiazolidinediones and Risk of Heart Failure in Patients with or at High Risk of Type 2 Diabetes Mellitus

BackgroundRecent meta-analyses of randomized clinical trials (RCTs) demonstrated a higher risk of heart failure (HF) with the use of thiazolidinediones (TZDs). However, this effect may have been diluted by including active controls. Also, it is uncertain whether the risk of HF is similar with rosiglitazone and pioglitazone.ObjectivesThis study quantified the risks of HF with the use of TZDs in patients with or at high risk of developing type 2 diabetes mellitus (DM), and evaluated differential effects by type of TZD. Secondarily, we evaluated risks of peripheral edema.MethodsWe performed a systematic review and meta-analysis of placebo-controlled RCTs evaluating the effect of rosiglitazone or pioglitazone on investigator-reported HF and edema. Articles published before 31 December 2009 were searched in MEDLINE, The Web of Science, and Scopus, and the data were extracted by three investigators. RCTs with ≥100 patients and ≥3 months of follow-up were included. We quantified the effect of TZDs as odds ratios (ORs) by using the Mantel-Haenzel and alternative models. We further evaluated the risk of serious/severe HF, and the effect of several trial characteristics on HF risk by subgroup analysis and meta-regression analysis.Results29 trials (n = 20254) were evaluated. TZDs were significantly associated with HF (TZD 360/6807 [5.3%] vs placebo 234/6328 [3.7%], OR 1.59; 95% CI 1.34, 1.89; p<0.00001). The risk of HF was higher with rosiglitazone than with pioglitazone (2.73 [95% CI 1.46, 5.10] vs 1.51 [1.26, 1.81]; p = 0.06). TZDs were associated with a similar risk of serious/severe HF (OR 1.47; 95% CI 1.16, 1.87; p = 0.002). Use of TZDs was also associated with edema (OR 2.04; 95% CI 1.85, 2.26; p<0.00001). HF and edema risks were consistent using Peto and random effects models. Risks of HF were significantly high for the subgroups of trials including patients with or at high risk for type 2 DM, and for the subgroup of trials with ≥12 months of follow-up. Meta-regression analysis showed that trials with lower overall baseline risk had higher HF risks.ConclusionIn placebo-controlled trials of adult patients with or at high risk for type 2 DM, TZD therapy is significantly and consistently associated with a higher risk of HF. The risk of serious/severe HF is also increased with the use of TZDs. HF risks are similar to those of meta-analyses combining active- and placebo-controlled trials. The benefit/risk profile of TZDs should be considered when treating diabetic patients with or without prior HF.

Impact of Severe Mitral Regurgitation on Postoperative Outcomes After Noncardiac Surgery

OBJECTIVE Preoperative cardiac risk assessment scoring systems traditionally do not include valvular regurgitation as a criterion for adverse outcome prediction. We sought to determine the impact of significant mitral regurgitation on postoperative outcomes after planned noncardiac surgeries. METHODS Patients with significant mitral regurgitation (moderate-severe or severe) undergoing noncardiac surgery were identified using surgical and echocardiographic databases at the Cleveland Clinic. The mechanism of mitral regurgitation was identified and classified as ischemic or nonischemic. By using propensity score analysis, we obtained 4 matched controls (patients undergoing noncardiac surgery without mitral regurgitation) for each case. The primary outcome was defined as a composite of 30-day mortality, myocardial infarction, heart failure, and stroke. Secondary outcomes included 30-day mortality, myocardial infarction, heart failure, stroke, and atrial fibrillation. RESULTS A total of 298 cases and 1172 controls were included in the study. The incidence of primary outcome was significantly higher among patients with mitral regurgitation (22.2%) compared with controls (16.4%, P=.02). Analysis of the secondary outcomes revealed significant differences in perioperative heart failure (odds ratio, 1.4; 95% confidence interval, 1.02-2.0) and perioperative myocardial infarction (odds ratio, 2.9; 95% confidence interval, 1.2-7.3). Of patients with mitral regurgitation, those with ischemic mitral regurgitation had significantly more events than those with nonischemic mitral regurgitation (39.2% vs 13.3%, P<.001). CONCLUSIONS Patients undergoing noncardiac surgery with significant ischemic mitral regurgitation are at higher risk of a composite adverse postoperative outcome, including short-term mortality, heart failure, myocardial infarction, and stroke.

Chronic diarrhea and abdominal pain: pin the pinworm.

Enterobius vermicularis is the most common helminthic infection in the US. It is usually considered an innocuous parasite that at the most causes perianal itching. We report a case of an 84-year-old female patient from an assisted living facility who presented with symptoms of colitis for 2 months. On detailed history and exam, she was found to have E. vermicularis infection. All her symptoms resolved dramatically within 2 days after a single dose of albendazole. We want to emphasize the importance of including parasitic infections such as E. vermicularis in the differential diagnoses of patients presenting with symptoms of colitis.

A life threatening complication of anticoagulation prophylaxis-bilateral adrenal hemorrhage†

A 52-year-old man presented to the emergency department (ED) from a skilled nursing facility with a complaint of bilateral upper-quadrant abdominal pain of 48 hours’ duration. The pain was sharp, nonradiating, constant, and was associated with nausea, vomiting, and constipation. The patient denied any fever, back pain, dysuria, melena, or hematochezia. In the rehabilitation facility the patient had been initially evaluated for this pain. He was given laxatives and stool softeners for presumed constipation but these measures had not been effective. A computed tomography (CT) scan of the abdomen had only showed stool in the colon and he was sent to the ED for further evaluation. Apart from severe degenerative joint disease in both his knees he was in good health. He was in the skilled nursing facility (SNF) for rehabilitation for bilateral knee replacement surgery done 9 days prior to this presentation. His postoperative course was unremarkable. He had been maintained on prophylaxis for venous thromboembolism with enoxaparin since postoperative day 1 at a daily dose of 40 mg subcutaneously, and was transferred to the SNF on postoperative day 6 on the same dose. His was receiving oxycodone and Tylenol for pain. He was on no other medications. Vital signs on presentation revealed a temperature of 97.5 F, a heart rate of 100 beats per minute, a respiratory rate of 16 breaths per minute, and a blood pressure of 136/ 69 mmHg. He was alert and oriented and in mild distress from the abdominal pain. Examination was normal except for tenderness in the upper quadrants of the abdomen though no rigidity or rebound tenderness were noted. Routine chemistries were normal except for sodium of 134 mg/ dL. His white count, hemoglobin, hematocrit, and platelet levels were noted to be at 17.5K/lL, 10 g/dL, 30%, and 345K/lL, respectively, and were stable with regard to his discharge laboratory values. His serum eosinophil level was normal. A complete workup for hypercoagulable state and bleeding disorders including assays for antibodies associated with heparin-induced thrombocytopenia were negative. He was admitted for further evaluation and treatment. The patient had another CT scan of the abdomen (Figure 1), which when compared to the one done at the SNF 2 days prior showed ‘‘markedly enlarged’’ bilateral adrenal glands suggestive of bilateral acute adrenal hemorrhage. The enoxaparin was discontinued and empiric steroid replacement therapy was begun. A random cortisol level was normal but a cosyntropin stimulation test showed an absolute increase in cortisol level of only 0.8 lg/dL at both 30 and 60 minutes after administration of 250 lg of cosyntropin. An investigation was undertaken to determine if the patient had any prior risk factors for bleeding. There was no evidence of infection and a comprehensive evaluation for bleeding, and coagulation disorders was normal. The bilateral adrenal hemorrhage was attributed to the use of enoxaparin in the postoperative setting. Unfortunately, the patient subsequently developed a deep venous thrombosis in his lower extremity and an inferior vena cava (IVC) filter was placed before discharge. He was doing well 6 months later, and is still continued on glucocorticoid and mineralocorticoid replacement therapy and follows up with endocrinology as an outpatient. FIGURE 1. Bilateral adrenal hemorrhage on CT. Abbreviation: CT, computed tomography.

VALUE OF A NORMAL ECG IN PREDICTING ECHOCARDIOGRAPHIC LEFT VENTRICULAR EJECTION FRACTION AND ITS IMPACT ON HEALTH CARE COSTS

Over the past few decades, there has been a continued increase in utilization and costs of echocardiographic procedures, and concerns have been raised regarding their potential overuse and misuse. Appropriateness criteria have been developed as a physician-directed effort to define proper

DOES “THE OBESITY PARADOX” EXIST FOR SURVIVAL AFTER A PERCUTANEOUS INTERVENTION?

We identified 25,815 PCI patients from 1994 to 2009. Patient data was obtained from our PCI database, EMR and social security death index. Patients were classified according to their BMI into 6 groups Class 0 BMI 45 Kaplan-Meyer survival curves were used in analysis and Bonferroni corrections were applied to the post-hoc pairwise comparisons. A Cox proportional hazard model was constructed to assess the correlations between mortality and race, age, gender, hypertension, diabetes, heart failure, hyperlipidemia and current smoking.

Positional atrial flutter

A 68-year-old man with a history of congestive heart failure and hypertension presented to the emergency department with fatigue and dyspnea of 3 weeks duration. Physical examination was consistent with heart failure. In addition, a right upper extremity resting tremor was noticed. An electrocardiogram (ECG) revealed an ‘‘atrial flutter’’ with a conduction ratio of 4:1 (Figure 1A). He denied palpitations or a previous history of atrial flutter/fibrillation. Unlike typical atrial flutter, these ‘‘flutter like waves’’ were distinctly absent in lead III, the only limb lead not connected to the right arm. While holding the patient’s right arm to control the tremor, a second ECG tracing was obtained. As expected the ‘‘flutter like waves’’ disappeared (Figure 1B). These ECG findings were attributed to the patient’s tremor. A neurological consultation established a clinical diagnosis of Parkinson’s disease. His congestive heart failure (CHF) was treated with increasing diuretics and appropriate treatment for Parkinson’s disease was initiated.