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The Shunt equation (also known as the Berggren equation) quantifies the extent to which venous blood bypasses oxygenation in the capillaries of the lung.. “Shunt” and “dead space“ are terms used to describe conditions where either blood flow or ventilation do not interact with each other in the lung, as they should for efficient gas exchange to take place.
The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
Atrial septal defect with left-to-right shunt. The left and right sides of the heart are named from a dorsal view, i.e., looking at the heart from the back or from the perspective of the person whose heart it is. There are four chambers in a heart: an atrium (upper) and a ventricle (lower) on both the left and right sides. [1]
This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes).This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).
as evidenced by (commonly used by nurses) AED: automated external defibrillator antiepileptic drug(s) AEM: ambulatory electrocardiogram monitoring: AF: atrial fibrillation atrial flutter amniotic fluid: AF-AFP: amniotic fluid alpha fetoprotein AFB: acid-fast bacilli: AFI: amniotic fluid index: AFib: atrial fibrillation: AFL: atrial flutter: AFNTR
Emergency medical services: EMT: Emergency medical technician: EMT-B: Emergency Medical Technician - Basic(OLD) EMT-I: Emergency Medical Technician - Intermediate (OLD) EMT-P: Emergency Medical Technician - Paramedic (OLD) EN: Enrolled nurse (AU) – See Licensed practical nurse: EORTC: European Organization for Research Treatment in Cancer EpSSG
If one were to consider humidified air (with less oxygen), then the ideal v/q ratio would be in the vicinity of 1.0, thus leading to concept of ventilation-perfusion equality or ventilation-perfusion matching. This matching may be assessed in the lung as a whole, or in individual or in sub-groups of gas-exchanging units in the lung.
Past medical history (see also medical history) PSI: Pneumonia severity index: PSP: phenylsulphtalein: PSS: progressive systemic sclerosis (see scleroderma) PSVT: paroxysmal supraventricular tachycardia: PT: prothrombin time physical therapy (physiotherapy) Pt. patient (from Latin patiens, meaning "one who endures" or "one who suffers") PTA