get_oxycons: Calculate Oxygen Consumption from Harvard Spirometer

In Lightbridge-KS/rslab: Functions for Respiratory System Physiology Lab

Description

This function compute oxygen consumption from Harvard Spirometer tracing. Simply define 2 points along oxygen line, and provide displacement in x-and y-direction. Oxygen consumption can be reported in units: L/hr or ml/min, and at condition: ATPS or STPD.

Usage

get_oxycons(
  x,
  y,
  paper_speed = 25,
  unit = c("L/hr", "ml/min"),
  condition = c("ATPS", "STPD"),
  baro = NA,
  temp_c = NA
)

Arguments

x	Displacement of tracing in x-direction (in millimeter).
y	Displacement of tracing in y-direction (in millimeter).
paper_speed	Paper speed of the kymograph (in millimeter/minute), 25 mm/min by default.
unit	(Character) Unit of the oxygen consumption to return, e.g. L/hr (default).
condition	(Character) Environmental condition to calculate oxygen consumption that affect gas volume, must be one of: ATPS: Volume of gas at ambient (A) temperature (T) (room temperature) and barometric pressure (P) saturated (S) with water vapor. STPD: Volume of gas at the standard (S) temperature (T) of 0°C and a barometric pressure (P) of 760 mmHg, and in a dry state (D).
baro	(If condition = "STPD") Barometric pressure at the recording site.
temp_c	(If condition = "STPD") Temperature in celsius at the recording site.

Value

Print information to console and return oxygen consumption as numeric vector, invisibly.

Examples

# Oxygen Consumption at ATPS in L/hr
get_oxycons(x = 100, y = 50)
# Oxygen Consumption at ATPS in ml/min
get_oxycons(x = 100, y = 50, unit = "ml/min")
# Oxygen Consumption at STPD, in L/hr, must provide `baro` and `temp_c`
get_oxycons(x = 100, y = 50, condition = "STPD", baro = 760, temp_c = 23)

Lightbridge-KS/rslab documentation built on Feb. 24, 2022, 1:36 a.m.