ABSTRACT
The intra-aortic balloon pump (IABP) is inserted percutaneously, usually through the femoral artery with placement in the descending aorta with its tip at the distal aortic arch (below the origin of the left subclavian artery). The balloon is connected to a drive console, consisting of a pressurized gas reservoir, a monitor for ECG and pressure wave recording, adjustments for inflation and deflation timing, triggering selection switches and battery backup power sources. The gases used for inflation are either helium or carbon dioxide. The advantage of helium is its lower density and therefore a better rapid diffusion coefficient. Carbon dioxide has increased solubility in blood and thereby reduces the potential consequences of gas embolization following a balloon rupture.
Subject(s)
Carotid Artery Diseases/diagnostic imaging , Carotid Artery, Common/diagnostic imaging , Intra-Aortic Balloon Pumping , Aged, 80 and over , Carotid Artery Diseases/surgery , Contraindications , Coronary Circulation , Diastole , Humans , Intra-Aortic Balloon Pumping/adverse effects , Male , Preoperative Care , Radiography , Systole , Ultrasonography, DopplerABSTRACT
AIM: To evaluate the effects of a single loading dose of caffeine base (10 mg/kg) on superior mesenteric artery (SMA) blood flow velocities (BFV). METHODS: Eighteen preterm infants of gestational age Subject(s)
Caffeine/pharmacology
, Central Nervous System Stimulants/pharmacology
, Infant, Premature/physiology
, Mesenteric Artery, Superior/drug effects
, Alberta
, Blood Flow Velocity/drug effects
, Blood Pressure/drug effects
, Caffeine/administration & dosage
, Central Nervous System Stimulants/administration & dosage
, Heart Rate/drug effects
, Humans
, Infant, Newborn
, Infusions, Intravenous
, Intensive Care Units, Neonatal
, Mesenteric Artery, Superior/diagnostic imaging
, Ultrasonography
