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Doctor insights on: Peak Expiratory Flow Rate Chart

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Does peak systolic velocity (psv) determines % of carotid blockage?

Does peak systolic velocity (psv) determines % of carotid blockage?

Yes: It correlates. As blood travels through a progressively smaller orifice, it must speed up to get through and that measurement is plugged into a formula to yield an orifice size. ...Read more

Peak Expiratory Flow (Definition)

Is the maximum effort you can do while blowing the air out (expiration) is an inderect measure how your lungs are within a patient with asthma. Although not exact & varuiable as a follow up value can help ...Read more


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What is the normal peak expiratory flow rate of an typical adult?

Depends: Peakflow is based on your height and age. Best to google a peak flow rate calculator (they are free on line). ...Read more

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How long does the peak expiratory flow rate take?

How long does the peak expiratory flow rate take?

Breif: A peak expiratory flow rate is a fairly simple test done, usually as part of a comprehensive pulmonary function test procedure. By itself, a few minutes as one usually is instructed to do several attempts and the best result or average results recorded. A full set of pft's may take 30 minutes to an hour depending on factors like patient cooperation, quality of equipment etc. ...Read more

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I would like help to calculate peak blood flow rate in aorta when given radius and peak blood velocity?

I would like help to calculate peak blood flow rate in aorta when given radius and peak blood velocity?

Bernoulli Equation: For peak pressure, you only need peak velocity. Peak pressure is 4 x the square of the peak velocity. If the peak velocity is 4 m/s, the peak pressure is 64 mmHg. The peak velocity IS the peak flow rate. For example, if peak velocity is 5 l/min, then the peak flow rate is 5 l/min. Is that what you meant? ...Read more

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Basal to mid anterior wall hypokinesis noted at peak workload. No ECG clinical evidence of ischemia at a max workload.

Basal to mid anterior wall hypokinesis noted at peak workload. No ECG clinical evidence of ischemia at a max workload.

Unclear question: Your statement did not provide a question. You obviously are under the care of a doctor and she/he would be better equipped to answer your questions as she/he knows more about your health. ...Read more

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Lmp aug 26. Consistently measuring 6days behind at u/s. 7w4d 8mm fetal pole. Hr 131 bpm. Is the hr consistent with fetal pole measurement? Healthy?

Lmp aug 26. Consistently measuring 6days behind at u/s. 7w4d 8mm fetal pole. Hr 131 bpm.  Is the hr consistent with fetal pole measurement? Healthy?

Yes: Sounds totally unremarkable. Fetal heart rate will typically peak at about 170 BPM at 9-10 weeks then slowly drop to 130 BPM at term. Good luck. ...Read more

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HR rises & falls twice (Up, down, up, down) during each set of inspiration & expiration. Shown in ANS tests. Variation of normal Sinus Arrhythmia? or?

HR rises & falls twice (Up, down, up, down) during each set of inspiration & expiration. Shown in ANS tests. Variation of normal Sinus Arrhythmia? or?

Sinus arrhythmia: Sinus arrhythmia only reflects an exaggeration of a normal behavior. Everyone's HR tends to vary slightly with the normal changes in pressure in the chest with breathing. Your HR should increase with inspiration and decrease with expiration. If this variation is quite obvious, then we call it a "sinus arrhythmia," but it's not generally clinically significant. ...Read more

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Normal peak flow meter test, normal CT of lung, normal chest xray , normal echo, normal pulse ox / blood pressure can this rule out interstitial lung d?

Normal peak flow meter test, normal CT of lung, normal chest xray , normal echo, normal pulse ox / blood pressure can this rule out interstitial lung d?

Most likely: The results suggest that you dont have significant cardiopulmonary illness. However if your symptoms persist your doctor should consider other causes including non physical. ...Read more

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How does asthma affect routine measurements: blood pressure, pulse rate, breathing rate, etc.?

How does asthma affect routine measurements: blood pressure, pulse rate, breathing rate, etc.?

None: In an asthmatic under good control none of these measurements should not be effected. ...Read more

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5-10 minutes running. Heart rate between 180-190. 22yrs 5'8 10.5stone. Is this normal?

Depends: It depends in how fast you are running and how fit you are. For a 22 year old, heart rate can reach that high in peak exercise. ...Read more

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Describe cardiac cycle and relate systole and diastole to the two numbers measuring blood pressure?

Describe cardiac cycle and relate systole and diastole to the two numbers measuring blood pressure?

Systole and Diastole: The heart is a pump. Every time it beats, it squeezes blood out to the body. The systolic blood pressure is the pressure measurement, in mm Hg, recorded in the arteries when the heart is squeezing. This is the point when the pressure is highest. The diastolic blood pressure is the pressure recorded when the heart is relaxing and is the point when pressure lowest. (e.g. 120/80 = systolic/dias. ...Read more

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17 year old active male run 4/5 mi daily,ekg, echo, chest X-ray,blood work normal peak flow meter normal feel lack of air and chest pain for 3 months?

17 year old active male run 4/5 mi daily,ekg, echo, chest X-ray,blood work normal peak flow meter normal feel lack of air and chest pain for 3 months?

During exercise?: If symptoms only occur during exercise could be exercise induced asthma, narrowing of airways in lungs triggered by strenuous exercise. It causes shortness of breath, wheezing, coughing and discomfort during or after exercise. Treatment can be gotten with medications and certain ways of controlling temperature prior to workouts. ...Read more

Dr. Ira Katz Dr. Katz
1 doctor agreed:
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Short of breath, irregular heartbeat , hight heart rate ?

Dr. Ira Katz Dr. Katz
1 doctor agreed:
Short of breath, irregular heartbeat , hight heart rate ?

Need to Get Checked: There are a few reasons, for this, but because of the high and irregular heartbeat you should be checked as soon as possible. I would recommend being evaluated at your doctor if you can be fit in now, an UC or ER. These could be symptoms of anxiety, but also an "arrhythmia" such as atrial fibrillation or flutter. It needs to be checked out, but don't panic. ...Read more

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High blood pressue averages 175/180. Diastlolic average low 60. Pulse rate average 50 at rest. Have been prescribed 5mg amlodipine . Is this ok? 67

High blood pressue averages 175/180.  Diastlolic average low 60. Pulse rate average 50 at rest.  Have been prescribed 5mg amlodipine .  Is this ok? 67

Amlodipine for BP: 70 M BP 180/60 prescribed amlodipine 5 mg. OK? I specialize in high BP. I and guidelines would generally do following but check with ur team. First get a number of readings with home device that is accurate on u. See my checklist. Then if above 140 at your age begin DASH eating plan See my checklist. BP not ...Read more

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