| PAo | airway opening pressure; ascending aortic pressure; pulmonary artery occlusion pressure |
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| PAP | pancreatitis-associated protein; Papanicolaou [test]; papaverine; passive-aggressive personality; pa... |
| PIP | paralytic infantile paralysis; peak inflation pressure, peak inspiratory pressure; periodic interim ... |
| PVP | penicillin V potassium; peripheral vein plasma; peripheral venous pressure; polyvinylpyrrolidone; po... |
| SFP | screen filtration pressure; simultaneous foveal perception; spinal fluid pressure; stopped flow pres... |
| indicator-dilution curve | Graph of the serial concentrations (dilutions) of a dye, e.g., Evans blue, following its intravascular or intracardiac injection; useful in the diagnosis of congenital cardiac shunts, measurement of cardiac output, and detection of cardiovalvular incompetence. Synonym: indicator-dilution curve. (05 Mar 2000) |
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| tension curve | The direction of the trabeculae in cancellous bone tissue adapted to resist stress. (05 Mar 2000) |
| epidemic curve | A graph in which the number of new cases of a disease is plotted against an interval of time to describe a specific epidemic or outbreak. (05 Mar 2000) |
| force-velocity curve | The relationship between isotonic velocity of shortening and afterload for a contracting muscle. (05 Mar 2000) |
| Frank-Starling curve | A graph in which cardiac output or stroke volume is plotted against mean atrial or ventricular end-diastolic pressure; with increasing venous return and atrial pressure the output proportionately increases until further increments overload the heart and the output falls. Synonym: Frank-Starling curve. (05 Mar 2000) |
| frequency curve | A systematic grouping of data into classes or categories according to the frequency of occurrence of each successive value or ranges of such values, resulting in a graph of a frequency distribution. Synonym: frequency curve. (05 Mar 2000) |
| Friedman curve | A graph on which hours of labour are plotted against cervical dilation in centimeters. (05 Mar 2000) |
| logistic curve | An S-shaped curve which depicts the growth of a population in an area of fixed limits. (05 Mar 2000) |
| abdominal pressure | Pressure surrounding the bladder; estimated from rectal, gastric, or intraperitoneal pressure. (05 Mar 2000) |
| absolute pressure | Pressure measured with respect to zero pressure. Compare: gauge pressure. (05 Mar 2000) |
| acoustic pressure | In ultrasound, the instantaneous value of the total pressure minus the ambient pressure; unit is pascal (Pa). (05 Mar 2000) |
| air pressure | The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment. (12 Dec 1998) |
| atmospheric pressure | The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned. (12 Dec 1998) |
| back pressure | Pressure exerted upstream in the circulation as a result of obstruction to forward flow, as when congestion in the pulmonary circulation results from stenosis of the mitral valve or failure of the left ventricle. (05 Mar 2000) |
| back-pressure renal atrophy | <radiology> Caliectasis without obstruction, due to repeated episodes of obstruction, gradual loss of renal pyramids (12 Dec 1998) |