ΣΥΜΒΟΛΗ ΕΙΣ ΤΗΝ ΜΕΛΕΤΗΝ ΤΩΝ ΜΕΤΑΒΟΛΩΝ ΤΗΣ ΑΙΜΑΤΩΣΕΩΣ ΤΟΥ ΜΥΟΚΑΡΔΙΟΥ ΕΠΙ ΦΥΣΙΟΛΟΓΙΚΩΝ ΚΑΙ ΕΣΤΕΝΩΜΕΝΩΝ ΣΤΕΦΑΝΙΑΙΩΝ ΑΓΓΕΙΩΝ ΚΑΤΟΠΙΝ ΑΥΞΗΣΕΩΣ ΤΗΣ ΚΑΡΔΙΑΚΗΣ ΣΥΧΝΟΤΗΤΟΣ

THE PRESENT INVESTIGATION DEALS WITH THE STUDY OF THE INFLUENCE OF CARDIAC FREQUENCY ON MYOCARDIAL BLOOD SUPPLY DRAINED BY THE CORONARY ARTERY WITH HEMODYNAMICALLY SIGNIFICANT STENOSIS. MYOCARDIAL BLOOD SUPPLY WAS ESTIMATED BY THE METHOD OF RADIOACTIVE CARBON MICROSPHERES. 10M IN SIZE, LABELED WITH SR25, CE151 AND CR51. CARDIAC FREQUENCY INCREASED IN THREE PHASES FROM 60 BEATS/MIN TO 120BEATS/MIN AND 150 BEATS/MIN CORRESPONDING. VARIOUS HEMODYNAMIC FACTORS, LEFTATRIAL PRESSURE AS WELL AS THE EGG WERE CONCOMITANTLY FOLLOWED UP. STENOSIS WAS PRODUCED IN THE ANTERIOR DESCENDING BRANCH, SNORE OF THE LEFT CORONARY ARTERY BY MEANS OF A SUTURE LIGATURE UNTIL THE FLOW OF THE VESSEL, CONTROLLED BY AN ELECTROMAGNETIC FLOWMETER WAS DIMINISHED BY 50%. THE STUDY OF MYOCARDIAL BLOOD FLOW WAS CARRIED OUT ON SEGMENTS OF THE ANTERIOR AND POSTERIOR WALL OF THELEFT VENTRICLE, THE DIAPHRAGM AND THE RIGHT VENTRICLE. THE PRESSURE OF THE LEFT VENTRICLE AS WELL AS THE SYSTOLIC AND MEAN PRESSURE OF THE AORTA DID NOT CHANGE SIGNIFICANTLY BETWEEN THE THREE PHASES OF THE EXPERIMENT. ONLY THE DIASTOLIC PRESSURE OF THE AORTA PRESENTED WITH AN INCREASE IN PARALLEL WITH THE INCREASE OF CARDIAC FREQUENCY. (SHORTENED)

Grantor dc:publisher

National and Kapodistrian University of Athens

Year dc:date

1982

Authors dc:creator

• Kritikos, Alexandros
• Κρητικός, Αλέξανδρος

• CORONARY ARTERY STENOSIS
• Heart rate
• MYOCARDIAL PERFUSION
• RADIOACTIVE CARBON MICROSPHERES
• Καρδιακή συχνότητα
• ΜΥΟΚΑΡΔΙΑΚΗ ΑΙΜΑΤΩΣΗ
• ΡΑΔΙΕΝΕΡΓΑ ΜΙΚΡΟΣΦΑΙΡΙΔΙΑ
• ΣΤΕΝΩΣΗ ΣΤΕΦΑΝΙΑΙΟΥ ΑΓΓΕΙΟΥ
• Ιατρική και Επιστήμες Υγείας
• Κλινική Ιατρική
• Medical and Health Sciences
• Clinical Medicine

Language dc:language

gre

Identifier

10.12681/eadd/0320

OAI identifier oai:identifier

oai:10442/0320