Blood pressure response to uncomplicated hemodialysis: the importance of changes in stroke volume.

Background: The cause of blood pressure (BP) changes during uncomplicated hemodialysis (HD) has not been fully investigated. Controversy exists whether changes in BP result from changes in stroke volume (SV) or total peripheral resistance (TPR).

Methods: We investigated 19 patients using continuous BP monitoring (Portapres) and subsequent Modelflow analysis, yielding continuous SV, cardiac output (CO) and TPR values.

ST segment depression criteria and the prevalence of silent cardiac ischemia in hypertensives.

The reported prevalence of silent cardiac ischemia as assessed by ambulatory electrocardiographic recording varies widely. The influence of the stringency of the analysis criteria has never been reported. We performed 24-hour, 12-lead ambulatory electrocardiographic recording in patients with hypertension but without proven coronary artery disease.

Diagnostic value of simultaneous non-invasive continuous, ambulatory finger blood pressure and electrocardiogram monitoring in a patient with hypertrophic obstructive cardiomyopathy.

Background: The pathophysiology of hypertrophic obstructive cardiomyopathy (HOCM) is complex and heterogeneous, and it may be difficult to disentangle the various pathophysiologic properties leading to complaints.

Objectives: To elucidate the sequence of acute pathophysiologic changes leading to complaints in a patient with HOCM.

Methods: Cardiopres measurements [the combination of non-invasive, continuous finger artery blood pressure monitoring, and three-lead electrocardiogram (ECG) recordings] were performed during physiologic, supine exercise--before and after replacement of metoprolol by verapamil.