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diurnal variation

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diurnal variation,
1 the range of the output or excretion rate of a substance in a specimen being collected for laboratory analysis over a 24-hour period.
2 expected high and low levels of a substance during a 24-hour period. For example, blood cortisol is highest in the morning and lowest in the early evening.


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History and examination If a patient presents with a cough, the following features should be clarified on history: * duration--days, weeks, months or years * course--constant, worsening, intermittent, diurnal variation * triggers--allergens, irritants, swallowing, position * dry or productive (nature and volume of sputum)--clear/ white/grey (mucoid), yellow/green (purulent) or bloody (haemoptysis) * other--shortness of breath, chest pain, wheeze/tightness, loss of weight, fever, sweating.
Cough remains one of the most common complaints that motivate ... by Ainslie, Gillian / CME: Your SA Journal of CPD
SHIMMER has now measured the PMC diurnal variation for the two northern seasons of 2007 and 2008, and surprisingly, the variation is quite different.
Satellite observes Earth's highest clouds by Asian News International
Diurnal variation of blood pressure; reproducibility and association with left ventricular hypertrophy in hemodialysis patients.
The effect of preoperative circadian blood pressure pattern on early ... by Bahcivan, Muzaffer; Gulel, Okan; Kolbakir, Fersat / The Anatolian Journal of Cardiology (Anadolu Kardiyoloji Dergisi)
 
 
 
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