Lung Volume Calibration
Lung Volume Calibration - Related Videos
09:49
Measurement of the Pressure-volume Curve in Mouse Lungs
0 Views •
Cited by 47 •
2015
Here we present a protocol to simply and reliably measure the lung pressure-volume curve in mice, showing that it is sufficiently sensitive to detect phenotypic parenchymal changes in two common lung pathologies, pulmonary fibrosis and emphysema. This metric provides a means to quantify the lung’s structural changes with developing pathology.
05:35
Lung Instillation and Fixation: Introducing Liquid into the Trachea and Fixing Lungs to Measure the Fixed Lung Volume
0 Views •
2023
This video describes a simple and reliable method of introducing liquid into the trachea for lung instillation, fixation, and lung volume measurement.
11:26
Real-time X-ray Imaging of Lung Fluid Volumes in Neonatal Mouse Lung
0 Views •
Cited by 1 •
2016
We present a protocol to assess the rate of alveolar fluid clearance or pulmonary edema in neonatal mouse lung using X-ray imaging technology.
07:43
Calibration Curves
0 Views •
2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Calibration curves are used to understand the instrumental response to an analyte and predict the concentration in an unknown sample. Generally, a set of standard samples are made at various concentrations with a range than includes the unknown of interest and the instrumental response at each concentration is recorded. For more accuracy and to understand the error, the response at each concentration can be repeated so an error...
06:16
Rat Heterotopic Abdominal Heart/Single-lung Transplantation in a Volume-loaded Configuration
0 Views •
2015
We describe a novel technique for heterotopic abdominal heart-lung transplantation (HAHLT) in rats. The transplant configuration results in a partially loaded graft circulation, allowing direct functional assessment. This model may be employed for acute or chronic studies of function and immunologic status of the transplanted graft.
FAQs
The reference volume provides a fixed comparison point: the operator delivers air from a syringe or another device with a known capacity, then compares that delivered amount with the instrument’s reading. The difference reveals measurement error, while adjustment brings the recorded value closer to the reference. This comparison helps ensure that subsequent respiratory measurements reflect actual air movement.
Adjustment is important because an uncorrected instrument can systematically overestimate or underestimate the air moved during breathing. Correcting the equipment before testing reduces this source of error rather than allowing it to influence every later measurement. In biology experiments, that preparation improves reproducibility and makes comparisons of respiratory results more dependable.
Lung volume calibration addresses the measuring system, not the participant’s breathing pattern or physiological condition. A known delivered volume provides an external standard for evaluating the instrument before biological measurements begin. Separating equipment error from respiratory variation helps researchers interpret changes in tidal volume, vital capacity, or other pulmonary results as biological findings rather than recording artifacts.
First, select a syringe or other reference device with a known capacity. Deliver its volume through the respiratory measurement equipment, record the instrument’s reading, and compare that value with the known amount. If the readings differ, adjust the equipment to correct the error. Completing this check before testing establishes a more reliable measurement basis.
Calibrated equipment supports spirometry and measurements such as tidal volume and vital capacity. Because these values depend on accurately recording the air moved during breathing, equipment error can affect their interpretation. Calibration provides greater confidence that observed differences represent respiratory performance or condition, supporting more consistent assessment across participants, experiments, or testing sessions.
The procedure is relevant whenever researchers compare respiratory measurements across conditions or groups. Its value extends to studies of respiratory physiology, disease-related changes, exercise responses, and environmental effects on breathing. In each setting, reliable calibration helps maintain reproducible data, allowing researchers to evaluate changes in pulmonary function without overlooking errors introduced by the measurement equipment.