title: Increase in left ventricular ejection rate during recovery from exercise in patients with myocardial infarction.
abstract: Changes in left ventricular (LV) ejection rate were evaluated during supine bicycle exercise and recovery in 12 patients with anterior myocardial infarction. Pulmonary artery wedge pressure (34 +/- 9 to 14 +/- 5 mm Hg) and plasma norepinephrine level decreased at 2 min recovery from peak exercise, whereas plasma lactate tended to increase. As a result, LV ejection rate reached the highest value at 2 min of recovery. Thus, both cardiac (optimal filling pressure) and peripheral factors (reduced vascular resistance) caused the increase in LV ejection rate at early recovery.
authors.affiliation: Cardiovascular Center, Kansai Medical University, Moriguchi City, Osaka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Sugiura
authors.forename: T
authors.initials: T
authors.lastname: Iwasaka
authors.forename: T
authors.initials: T
authors.lastname: Sumimoto
authors.forename: K
authors.initials: K
authors.lastname: Takehana
authors.forename: F
authors.initials: F
authors.lastname: Yuasa
authors.forename: M
authors.initials: M
authors.lastname: Inada
mesh_terms: D000136:Acid-Base Equilibrium / Q000502:physiology; D005080:Exercise Test; D005260:Female; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D007773:Lactates / Q000097:blood; D019344:Lactic Acid; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology*; D009638:Norepinephrine / Q000097:blood; D013318:Stroke Volume / Q000502:physiology*; D016277:Ventricular Function, Left / Q000502:physiology*
chemical_list: D007773:Lactates; D019344:Lactic Acid; D009638:Norepinephrine