Rv Lv Ratio Pe

Figure 3 kaplan meier survival estimates of patients with ild stratified according to rv lv ratio using the rv lvlargest method.

Rv lv ratio pe.

Positive study rv dilation 1 1 ratio. A right ventricle left ventricle rv lv ratio 1 0 was not associated with fewer favorable outcomes in patients with symptomatic acute pulmonary embolism pe who were otherwise considered low risk according to study results published in the american journal of respiratory and critical care medicine. An rv lvlargest ratio 1 0 was an adverse predictor of mortality. All patients with a mcconnell s sign were positive for pe.

Additional studies have estimated that an rv lv diameter ratio superior to 1 5 indicates a severe episode of pe 36 39 41. In this patient level post hoc analysis of 2 dutch clinical trials hestia. Treatment decreased rv dilatation and pulmonary hypertension with zero cases of ich. The normal ratio of right to left ventricular size is generally quoted as 0 6 with a ratio of 1 0 considered to be significant right ventricular enlargement.

If these five factors were all absent 37 1 of the population the probability that ct rv lv ratio is sufficient to exclude rv strain pe related short term death was 0 97 95 ci 0 95 0 99. In the study by araoz et al 42 an rv lv diameter ratio greater than 1 was associated with a 3 6 fold increased risk of admission to the intensive care unit. 17 patients with rv lv 1 1 and 15 found to have pe 2 false positives had copd 129 patients with no rv dilatation found to have pe 114 with no pe. There was one major bleed which was a groin hematoma that resulted in transient hypotension.

This study found that compared with the gold standard transthoracic echo tte ct sensitivity for rv strain was 88 specificity 39 ppv 49 and npv 83. Rv lv ratio 1 0 n 13 and rv lv ratio 1 0 n 79. Rv lv ratio 0 9 rv strain ct pulmonary angiogram ctpa can not only visualize the clot but can also detect evidence of rv strain. Positive lr 29 and negative lr 0 51.

Normal ct rv lv ratio plus readily obtained five clinical predictors were adequate to exclude rv strain or pe related short term mortality. This is not specific to pe as other conditions including copd congenital anomalies and primary pulmonary hypertension may also cause rv enlargement. Sensitivity 50 specificity 98 ppv 88 npv 88.