David Dickerman - Academia.edu (original) (raw)
A physician by training, I practiced until I was 51, I retired and got a Bachelor's degree in Philosophy and Classical Studies, and now practice Gong Fu and ride motorcycle. I am now a free thinker. My interest is in enlightenment through meditation and movement.
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Talks by David Dickerman
Herein is presented a novel model of Ancient Philosophy called ‘Nut,’ which assembles representat... more Herein is presented a novel model of Ancient Philosophy called ‘Nut,’ which assembles representative index works from five major schools of ancient thought. While respecting alterity, the model localizes the elusive ‘Truth’ in the center. The inspiration for the ring model itself is derived from two ‘opposing’ schools. Language is modeled as ‘legs’ upon which to grow vertically within the model, which resolves into the shape of a pentagonal nut with an undefined central area. Truth is modeled as links from one side to another across the unknown. The model will be employed by iterative replacement of the index texts and sequential comparison with others. The ‘Bolt’ model describes humanity’s past and present and thereby is thereby a ‘guideline’ for current thought. The model describes potential conflict when the ‘Nut’ stands ‘proud’ of current societal trends and thereby demonstrates the distinction between ancient and modern in high relief.
Papers by David Dickerman
Journal of Cardiothoracic and Vascular Anesthesia, Aug 31, 1999
To examine the effects of phenylephrine infusion and increases in pump flow on systemic oxygen su... more To examine the effects of phenylephrine infusion and increases in pump flow on systemic oxygen supply and demand when they are used to support mean arterial pressure (MAP) during cardiopulmonary bypass (CPB). Design: Prospective, unblinded study. Setting: The animal cardiopulmonary laboratory at the Mayo Foundation (Rochester, MN). Participants: Twelve pigs. Interventions: Twelve pigs had systemic oxygen delivery (DO2) and consumption (VO2) measured before CPB and then underwent CPB at 35°C. During CPB, measurements of DO2 and 402 were obtained at an MAP of approximately 50 mmHg and a pump flow of 2.2 L/min/m 2, Thereafter, MAP was elevated to 70 mmHg either by increases in pump flow or by a phenylephrine infusion, and the balance between systemic oxygen supply and demand was reassessed, Measurements and Main Results: Before CPB, DO2 was 375 _+ 83 mL/min/m 2 and decreased with the onset of CPB mainly because of the effects of hemodilution. During CPB, with a pump flow of 2.2 L/min/m 2 and an MAP of 53 mmHg, 1~O2 was 218 +_ 40 mL/min/m z. Increasing perfusion pressure to an MAP of 72 mmHg with phenylephrine and maintaining pump flow constant (2.2 L/min/m 2) did not change DO2 (222 __ 37 mL/min/m2), and the oxygen extraction ratio (OER) was increased relative to pre-CPB levels. In contrast, increasing MAP to 71 mmHg by increasing pump flow to 3.2 L/min/m 2 resulted in a significantly greater DO2, and the OER normalized to the pre-CPB value. Conclusions: During CPB with conventional flow rates, I)O2 is decreased. Supporting MAP with increases in pump flow better maintains DO2 than the administration of an ~-agonist.
Herein is presented a novel model of Ancient Philosophy called ‘Nut,’ which assembles representat... more Herein is presented a novel model of Ancient Philosophy called ‘Nut,’ which assembles representative index works from five major schools of ancient thought. While respecting alterity, the model localizes the elusive ‘Truth’ in the center. The inspiration for the ring model itself is derived from two ‘opposing’ schools. Language is modeled as ‘legs’ upon which to grow vertically within the model, which resolves into the shape of a pentagonal nut with an undefined central area. Truth is modeled as links from one side to another across the unknown. The model will be employed by iterative replacement of the index texts and sequential comparison with others. The ‘Bolt’ model describes humanity’s past and present and thereby is thereby a ‘guideline’ for current thought. The model describes potential conflict when the ‘Nut’ stands ‘proud’ of current societal trends and thereby demonstrates the distinction between ancient and modern in high relief.
Journal of Cardiothoracic and Vascular Anesthesia, Aug 31, 1999
To examine the effects of phenylephrine infusion and increases in pump flow on systemic oxygen su... more To examine the effects of phenylephrine infusion and increases in pump flow on systemic oxygen supply and demand when they are used to support mean arterial pressure (MAP) during cardiopulmonary bypass (CPB). Design: Prospective, unblinded study. Setting: The animal cardiopulmonary laboratory at the Mayo Foundation (Rochester, MN). Participants: Twelve pigs. Interventions: Twelve pigs had systemic oxygen delivery (DO2) and consumption (VO2) measured before CPB and then underwent CPB at 35°C. During CPB, measurements of DO2 and 402 were obtained at an MAP of approximately 50 mmHg and a pump flow of 2.2 L/min/m 2, Thereafter, MAP was elevated to 70 mmHg either by increases in pump flow or by a phenylephrine infusion, and the balance between systemic oxygen supply and demand was reassessed, Measurements and Main Results: Before CPB, DO2 was 375 _+ 83 mL/min/m 2 and decreased with the onset of CPB mainly because of the effects of hemodilution. During CPB, with a pump flow of 2.2 L/min/m 2 and an MAP of 53 mmHg, 1~O2 was 218 +_ 40 mL/min/m z. Increasing perfusion pressure to an MAP of 72 mmHg with phenylephrine and maintaining pump flow constant (2.2 L/min/m 2) did not change DO2 (222 __ 37 mL/min/m2), and the oxygen extraction ratio (OER) was increased relative to pre-CPB levels. In contrast, increasing MAP to 71 mmHg by increasing pump flow to 3.2 L/min/m 2 resulted in a significantly greater DO2, and the OER normalized to the pre-CPB value. Conclusions: During CPB with conventional flow rates, I)O2 is decreased. Supporting MAP with increases in pump flow better maintains DO2 than the administration of an ~-agonist.