Doctor insights on:
What Is The Difference Between Ventilation And Perfusion
Lung V-Q scan: Ventilation scanning involves the patient breathing in a radiotracer while perfusion scanning involves injecting the radiotracer through an iv. The procedure is done usually to evaluate the presence of absence of a pulmonary embolism (usually a blood clot) and involves comparing the radiotracer's presence in the alveoli vs. Its presence in the lung circulation. ...Read more
Blood clots in lungs: It's a nuclear test to look for blood clots in the lungs. It has been largely replaced with high resolution spiral ct scans. ...Read more
Radiological test: A ventilation-perfusion (v/q) scan is a specialized radiological lung test comparing mismatches between any part of your lung that still exchanges oxygen (affected in COPD e.g.) and any part that is not receiving blood flow. This is done through radio-tracers. A mismatch means there is a clot in that part of the lung hindering blood flow. Diseases & surgery of the lung complicate interpretation. ...Read more
V/Q mismatch= PE?: Pulmonary zones of good ventilation with good perfusion result in appropriate oxygen transport into the bloodstream. Mismatch of ventilation and perfusion results in poorly oxygenated blood (example pulmonary emboli where vascular clots prevent good perfusion to regions of optimal ventilation ---ie oxygen cannot be transported into bloodstream. ...Read more
Pulmonary Embolism: The main reason to perform a pulmonary ventilation-perfusion (v-q) scan is to rule out the presence of a pulmonary embolus (commonly a blood clot). There are several forms of pulmonary thrombo-embolism, but the most common situation is one of sudden onset, leading to sob. Chronic thrombo-embolism leads to development of sob over a long period and it can also be diagnosed with a v-q scan. ...Read more
VQ Near segmental defect in superior of left lower lobe. Greater then75%defect on perfusion, no evidence of defect on ventilation. Few tiny subseqment?
High: Chance of PE take anticoagulants for I year for its time ...Read more
Dr order pulm. Ventilation/perfusion scan for tachardyia and sob. Have normal chest x-ray, ekg, pulmonary test and blood work. Odds it's an embolism?
Odds don't count: Stastitics are only guidelines and don't apply to individual cases. A lung scan (v/q) is accurate if it is considered high probability or normal. The " gold standard" is computerized angiogram of the chest which is very accurate both to diagnose or exclude pulmonary embolism. Talk to your md. If you have no medical contraindications, I would prefer the ct angiogram. ...Read more
Need both: Not sure what you are referring to regarding perfusion being more important than ventilation. In regards to a lung perfusion ventilation scan, a mismatch between perfusion and ventilation is abnormal and can suggest pulmonary disease. Ventilation delivers oxygen to the blood via the lungs, then perfusion (blood) delivers the oxygen to the body, so both are important. ...Read more
Simply: Intubation is placement of a tube in the trachea (wind pipe), mechanical ventilation is the process by which a patient receives oxygen using artificial means (a ventilator). Almost always, intubation is followed by mechanical ventilation and mechanical ventilation is performed most times after intubation. ...Read more
See below.: The CPAP provides continuous pressure throughout the breathing cycle. The bipap provides a higher pressure in inspiration and a lower pressure in exhalation. Best settings and modes are determined by overnight sleep study. ...Read more
Nose is better: The main difference is that your nose is designed to warm and moisten the air before it gets to your lungs while the mouth is not. If you breathe mostly through your mouth, you will have increased loss of water from your body. Also, it is less attractive, socially. ...Read more
Few differences: Asthma is a breathing out problem. Panic attacks are a breathing in problem). Asthma is relieved with albuterol inhalers, panic attacks are resolved by relaxing. Asthma is associated with allergic disease, panic attacks sometimes with anxiety/psychological disease. You can get a peak flow meter from your doctor to check your breathing when you're having an attack and/or breathing tests in office ...Read more
Can you tell me what is the difference between breathing problems caused by a panic attack and asthma?
Mechanical vs biolog:
Breathing is basically the actual air movement in and out of lungs. Respiration is a biological process of transferring and using the oxygen/carbon dioxide for cellular functions/chemical processes, applying to both animals and plants. It is a rather complicated but fascinating process of life. Biology=study of life.
Have fun learning. Good luck. ...Read more