title: [Suddenly occurring exercise intolerance].
abstract: In this case report, the differencial diagnosis of exercise intolerance associated with dyspnea and the diagnostic approach with cardio-pulmonary exercise testing with detection of an exercise induced second-degree atrio-ventricular block as a cause of chronotropic incompetence is described.
authors.affiliation: Klinik und Poliklinik für Kardiologie, Schweizer Herz- und Gefässzentrum, Universitïtsklinik Inselspital Bern.
authors.forename: M
authors.initials: M
authors.lastname: Anderegg
authors.forename: N
authors.initials: N
authors.lastname: Schwick
authors.forename: J P
authors.initials: JP
authors.lastname: Schmid
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D015897:Comorbidity; D003922:Diabetes Mellitus, Type 1 / Q000150:complications / Q000175:diagnosis; D004417:Dyspnea / Q000209:etiology*; D004562:Electrocardiography; D005080:Exercise Test; D005221:Fatigue / Q000209:etiology*; D005260:Female; D006327:Heart Block / Q000150:complications / Q000175:diagnosis*; D006333:Heart Failure / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications / Q000175:diagnosis; D005082:Physical Exertion / Q000502:physiology*; D011183:Postoperative Complications / Q000175:diagnosis