Paroxysmal tachycardia
Hyperthyroidism
Toxic disturbances
Physiologic hypertrophies
Simple dilatation
Shock
Stomach dilatation
Anesthesia in heart disease




BLOOD PRESSURE


The study of the blood pressure has become a subject of great
importance in the practice of medicine and surgery. No condition can
be properly treated, no operation should be performed, and no
prognosis is of value without a proper consideration of the
sufficiency of the circulation, and the condition of the circulation
cannot be properly estimated without an accurate estimate of the
systolic and diastolic blood pressure. However perfectly the heart
may act, it cannot properly circulate the blood without a normal
tone of the blood vessels, both arteries and veins. Abnormal
vasodilatation seriously interferes with the normal circulation, and
causes venous congestion, abnormal increase in venous blood
pressure, and the consequent danger of shock and death. Increased
arterial tone or tonicity necessitates greater cardiac effort, to
overcome the resistance, and hypertrophy of the heart must follow.
This hypertrophy always occurs if the peripheral resistance is not