Percutaneous transtracheal ventilation
needle cricothyrotomy
what changes in blood gases occur when a patient is hyperventilating?
decreased CO2; increased PaO2
what is the primary danger to the infant during a precipitous delivery?
Cerebral Trauma
Preload
stretching prior to contraction
Afterload
resistance ventricle of the heart has to overcome to eject blood
Chronotropy
heart rate
inotropy
how hard the heart contracts
isotropy
...
automaticity
cells ability to spontaneously depolarize
atherosclerosis
gradual blockage of an artery by cholesterol and hardened deposits
syncope
...
which vessel provides blood supply to the SA and AV nodes in most patients?
right coronary artery
Impulses that originate in both the atria and ventricles simultaneously, meeting somewhere in the heart, create a strange appearing complex. What is that complex known as?
Fusion beat
ectopic beat
a heartbeat occurring outside the normal rhythm
what are the most common causes of premature atrial contractions?
Stimulants such as caffeine or tobacco
electrical axis of the heart
mean direction of the action potentials traveling through the ventricles