Value of impedance cardiography during 6-minute walk test in pulmonary hypertension.

Background: Methods that predict prognosis and response to therapy in pulmonary hypertension (PH) are lacking. We tested whether the noninvasive estimation of hemodynamic parameters during 6-minute walk test (6MWT) in PH patients provides information that can improve the value of the test.

Methods: We estimated hemodynamic parameters during the 6MWT using a portable, signal-morphology-based, impedance cardiograph (PhysioFlow Enduro) with real-time wireless monitoring via a bluetooth USB adapter.

Causes and circumstances of death in pulmonary arterial hypertension.

Rationale: The causes and circumstances surrounding death are understudied in patients with pulmonary arterial hypertension (PAH).

Objectives: We sought to determine the specific reasons and characteristics surrounding the death of patients with PAH.

Methods: All deaths of patients with pulmonary hypertension (PH) followed in the Cleveland Clinic Pulmonary Vascular Program were prospectively reviewed by the PH team.

State anger and the risk of injury: a case-control and case-crossover study.

Purpose: Previous studies have examined anger at a given moment (state anger) and proxies for injury, or anger as a trait and injuries per se. Findings have been inconsistent. We sought to define further the relationship between state anger and risk of injury.