Pulmonary Embolism / DVT / VTE Archives - Page 3 of 4 - PulmCCM
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Pulmonary Embolism / DVT / VTE Articles

For most, plane flights add no DVT/PE risk (just stretch your legs)

 Clinic and Consults, Pulmonary Embolism / DVT / VTE  Comments Off on For most, plane flights add no DVT/PE risk (just stretch your legs)
Feb 232012
 
For most, plane flights add no DVT/PE risk (just stretch your legs)

As we were all taught in med school, long-distance flights, or even a long car trip, greatly increase your risk for deep venous thrombosis and pulmonary embolism … right? (I feel like I’ve answered about 8 board questions featuring this scenario.) The CDC even has a whole page of guidelines detailing the travel-DVT-risk-connection and the [… read more]

PE incidence after knee surgery: 0.27% with prophylaxis (Meta-analysis, JAMA)

 Clinic and Consults, Pulmonary Embolism / DVT / VTE, Review Articles  Comments Off on PE incidence after knee surgery: 0.27% with prophylaxis (Meta-analysis, JAMA)
Feb 062012
 

Januel et al report findings of a systematic review and meta-analysis to estimate the total incidence of acute symptomatic venous thromboembolism (symptomatic DVT or pulmonary embolism) among patients receiving proper thromboprophylaxis after hip or knee replacements. They came up with rates of 1.1% after knee replacements, and 0.5% after hip replacements. The rate of pulmonary [… read more]

Apixaban for thromboprophylaxis post-discharge causes bleeding (ADOPT Trial, NEJM)

 Pulmonary Embolism / DVT / VTE, Randomized Controlled Trials  Comments Off on Apixaban for thromboprophylaxis post-discharge causes bleeding (ADOPT Trial, NEJM)
Jan 282012
 
Apixaban for thromboprophylaxis post-discharge causes bleeding (ADOPT Trial, NEJM)

For years, Pharma have been itching to prove a benefit of extended chemoprophylaxis against DVT / PE in medically ill patients after hospital discharge. Three weeks or more of enoxaparin after surgical knee or hip replacement is standard care, since it reduces the high risk of serious venous thromboembolism with a relatively low risk of [… read more]

Omitting heparin prophylaxis in first 24 ICU hours associated with higher mortality (CHEST)

 Critical Care, Pulmonary Embolism / DVT / VTE, Review Articles  Comments Off on Omitting heparin prophylaxis in first 24 ICU hours associated with higher mortality (CHEST)
Jan 212012
 
Omitting heparin prophylaxis in first 24 ICU hours associated with higher mortality (CHEST)

As you know, the risk for DVT and PE in the ICU are high. How high? Depends on how you count them. Asymptomatic, ultrasound-surveillance-detected DVTs have an incidence of 5-10% during the ICU stay (from the PROTECT trial and a 2005 series), even when patients receive proper thromboprophylaxis. The incidence is even higher (up to 80%) in trauma [… read more]

Jan 012012
 
ACP advises against universal DVT/PE prophylaxis! "Quality" quagmire thickens (Guideline/Review, Ann Intern Med)

Daunted by the seeming impossibility of measuring and comparing hospitals on real outcomes (given our primitive state of data collection and heterogeneity in patient populations, among many other challenges), well-meaning bureaucrats and non-profiteering safety advocates like the Institute for Healthcare Improvement have created directives based on surrogate measures in an attempt to standardize and improve [… read more]

Overdiagnosis of PEs on CT-angiograms seems likely (Ann Intern Med)

 Pulmonary Embolism / DVT / VTE, Radiology & Imaging  Comments Off on Overdiagnosis of PEs on CT-angiograms seems likely (Ann Intern Med)
Dec 262011
 

Using the Nationwide Inpatient Sample and the national Multiple Cause-of-Death files, Wiener et al found that since the inception of CT-angiography in 1998, the number of CT-PE scans have risen 11-fold, and age-adjusted incidence of pulmonary embolism rose from 62 to 112 per 100,000 (an 81% increase). Over the same period, the mortality rate (presence of PE [… read more]

Current Approach to the Diagnosis of Acute Nonmassive Pulmonary Embolism (Review)

 Pulmonary Embolism / DVT / VTE, Review Articles  Comments Off on Current Approach to the Diagnosis of Acute Nonmassive Pulmonary Embolism (Review)
Dec 262011
 

Moores LK et al. Current Approach to the Diagnosis of Acute Nonmassive Pulmonary Embolism. CHEST 2011;140:509-518.  Review. Where is the best area under the curve, or the “overdiagnosis sweet spot?” It seems no approach gets us off the hook as we seek to avoid anticoagulating people without PEs (without missing any, of course): CT-angiography  is more sensitive [… read more]

Dec 182011
 

Dalteparin is a low-molecular weight heparin that, unlike enoxaparin, is safe for people with renal failure. Among 3,746 ICU patients in 6 countries, followed until hospital discharge, there was no difference in the rate of proximal deep venous thrombosis (5.1% vs 5.8%, 1′ endpoint) between once-daily dalteparin and twice-daily UFH, as detected by twice-weekly ultrasounds. [… read more]

Catheter-based reperfusion in pulmonary embolism (Review)

 Cardiovascular Disease, Pulmonary Embolism / DVT / VTE  Comments Off on Catheter-based reperfusion in pulmonary embolism (Review)
Dec 082011
 

A handful of people with pulmonary embolism have absolute contraindications to anticoagulation. Authors here describe these as: Any prior intracranial hemorrhage, known structural intracranial cerebrovascular disease (eg, arteriovenous malformation), known malignant intracranial neoplasm, ischemic stroke within 3 months, suspected aortic dissection, active bleeding or bleeding diathesis, recent surgery encroaching on the spinal canal or brain, [… read more]

Chronic thromboembolic pulmonary hypertension registry reveals new insights (Circulation)

 Pulmonary Embolism / DVT / VTE, Pulmonary Hypertension, Radiology & Imaging, Review Articles  Comments Off on Chronic thromboembolic pulmonary hypertension registry reveals new insights (Circulation)
Nov 162011
 

Chronic thromboembolic pulmonary hypertension is a “new” condition (in terms of our recognition and understanding of it), whose true prevalence, natural history, and response to therapies continue to be elucidated. Meanwhile, specialized surgical centers continually make thromboendarterectomy safer, providing definitive cures that are nothing short of miraculous for those affected by this otherwise usually fatal [… read more]

Nov 012011
 

More than 40 small, middling-quality studies (n~80, some randomized) showing inconsistent results as to whether antioxidant therapy with acetylcysteine or other drugs reduces the risk for contrast nephropathy / acute kidney injury after angiography or CT-angiography. A 2008 meta-analysis concluded Mucomyst was helpful, reducing risk of nephropathy by almost 40% vs saline alone. However, the authors noted [… read more]

Oct 302011
 

Lucassen et al sharpened their pencils and tried to combine in a meta-analysis 52 studies (n=55,268) that examined the success of methods of using “gestalt” (subjective impression) or clinical decision rules (Wells, Geneva or revised Geneva scores) to diagnose acute pulmonary embolism. The punchline (and their unstated but implied conclusion) is, we just can’t safely [… read more]

Oct 212011
 

The new coumadin-killers, direct thrombin inhibitor dabigatran (approved in the U.S.) and direct factor Xa inhibitor rivaroxaban (coming soon) could usher in an awesome new era of anticoagulation, without warfarin’s requirements of cumbersome monitoring and annoying in-hospital titrations. But what happens when patients taking these drugs bleed, or need emergency surgery? Fresh-frozen plasma doesn’t work. [… read more]

Sep 292011
 

Increasing urine output should reduce the risk for contrast nephropathy, as should hustling contrast metal past vulnerable Na-K-Cl transporters using loop diuretics. However, furosemide alone increases the risk for contrast nephropathy. Some hypothesized that was due to diuretic-induced hypovolemia. Briguori et al report results of REMEDIAL-II. They randomized ~300 patients at very high risk for [… read more]

Sep 022011
 

September’s Current Opinion in Pulmonary Medicine has 4-5 review articles each on sarcoidosis (how to handle calcium problems; cardiac sarcoid); interstitial lung disease (biologics for connective-tissue disease related ILD; LAM therapies; stem cell therapy for pulmonary fibrosis), and pulmonary vascular disease. Curr Opin Pulm Med 2011;17.

How many people with DVT / PE already have HIT antibodies at presentation? (And should we care?)

 Critical Care, Pulmonary Embolism / DVT / VTE  Comments Off on How many people with DVT / PE already have HIT antibodies at presentation? (And should we care?)
Aug 112011
 

Do we need to worry about pre-existing heparin-induced thrombocytopenia antibodies in people admitted with pulmonary embolism / deep venous thrombosis? Or can we keep happily slinging heparin at first sight? Warkentin et al analyze data from the Matisse VTE studies, which enrolled 3,994 patients with DVT or PE. All had ELISA HIT antibodies collected at [… read more]

Inactivity linked to pulmonary embolism risk

 Pulmonary Embolism / DVT / VTE  Comments Off on Inactivity linked to pulmonary embolism risk
Jul 242011
 

Inactivity has not yet been shown to increase risk for VTE, until now. Among 69,000 women in the Nurses Health Study 1990-2008, the cohort that spent the most time sitting experienced twice as many pulmonary emboli as the cohort that spent the least time sitting, with a hazard ratio of 2.34 after mulitvariate analysis, report [… read more]