A new method for noninvasive venous blood oxygen detection

Two methods of hand heating [warmed blanket 40 degrees C (WB) and warm-air box 55 degrees C (WA)] were compared with the effect of no heating (control) in six healthy females. After 30 min baseline, the left hand was either heated for 1 h or not heated. Measurements were made of skin temperature (ST), core temperature (CT), right forearm (FBF) and skin blood flow (SBF), and right forearm deep venous blood oxygen content with and without occlusion of the hand circulation. CT rose above baseline in WB (by +0.2 degrees C, P less than 0.01) but not with control or WA. Abdominal ST rose only with WB (by +0.66 degrees C above baseline, P less than 0.01). FBF increased above baseline values with both WA (by +10 ml.l forearm-1.min-1) and WB (by +12 ml.l forearm-1.min-1), but neither was significantly greater than the control. SBF increased above baseline only with WB (by +202 mV, P less than 0.01), and this was significantly greater than control SBF. With an occluded hand circulation, deep venous oxygen content rose above baseline values with WB only (+6.0%, P less than 0.01) but was not greater than control with either method of hand heating. We conclude that using a warm-air box has less effect than a heated blanket on the measured variables.

Download Full-text

A Comparison of Pulse Oximetry with Invasive Mixed Venous Blood Oxygen Saturation Monitoring

Pulse Oximetry ◽

10.1007/978-1-4471-1423-9_5 ◽

1986 ◽

pp. 41-44

Author(s):

A. Vuori

Keyword(s):

Oxygen Saturation ◽

Pulse Oximetry ◽

Venous Blood ◽

Mixed Venous Blood ◽

Blood Oxygen ◽

Blood Oxygen Saturation ◽

Mixed Venous

Download Full-text

THE EXTERIORIZATION OF THE THYROID GLAND AND MEASUREMENT OF ITS FUNCTION

Journal of Endocrinology ◽

10.1677/joe.0.0260241 ◽

1963 ◽

Vol 26 (2) ◽

pp. 241-247 ◽

Cited By ~ 5

Author(s):

I. R. FALCONER

Keyword(s):

Thyroid Gland ◽

Carotid Artery ◽

Histological Examination ◽

Jugular Vein ◽

Venous Blood ◽

New Method ◽

Secretory Function

SUMMARY A new method for obtaining thyroid venous blood from an essentially undisturbed ewe has been developed. A lobe of the thyroid gland is transferred to the outside of the neck, in a carotid artery—jugular vein loop. The remaining lobe is removed. The secretory function of the exteriorized lobe has been shown to be normal by 131I studies, measurement of protein bound iodine, response to T.S.H. and histological examination. Cannulation of the jugular vein near the thyroid vein allows continuous or interrupted sampling of thyroid venous blood, the jugular flow being occluded by pressure.

Download Full-text

Central Venous Blood Oxygen Saturation Monitoring in Patients With Chronic Pulmonary Arterial Hypertension Treated With Continuous IV Epoprostenol

CHEST Journal ◽

10.1378/chest.07-0694 ◽

2007 ◽

Vol 132 (3) ◽

pp. 786-792 ◽

Cited By ~ 7

Author(s):

Kelly M. Chin ◽

Richard N. Channick ◽

Nick H. Kim ◽

Lewis J. Rubin

Keyword(s):

Pulmonary Arterial Hypertension ◽

Arterial Hypertension ◽

Oxygen Saturation ◽

Venous Blood ◽

Blood Oxygen ◽

Central Venous ◽

Blood Oxygen Saturation ◽

Central Venous Blood ◽

Pulmonary Arterial

Download Full-text

A field versus laboratory study of blood oxygen status in normoxic crabs at different temperatures

Canadian Journal of Zoology ◽

10.1139/z96-049 ◽

1996 ◽

Vol 74 (3) ◽

pp. 423-430 ◽

Cited By ~ 17

Author(s):

J.-C. Massabuau ◽

J. Forgue

Keyword(s):

Wide Spectrum ◽

Venous Blood ◽

Carcinus Maenas ◽

Blood Oxygen ◽

Arterial Blood ◽

Field Versus ◽

Partial Pressures ◽

Different Temperatures ◽

Head Pressure ◽

Oxygen Status

The blood oxygen status of two species of active crabs (Carcinus maenas and Necora puber) was studied in the field and compared with the results of previous laboratory experiments performed on a wide spectrum of physiologically different water-breathers. The aim was to determine whether, as in the laboratory, the functioning of the O2 supply system in the field could be based on maintaining the arterial [Formula: see text] in the low range, 1–3 kPa. The O2 partial pressures and concentrations in the arterial and venous blood, arterial blood pH, and blood respiratory pigment concentration were measured in normoxic water at various temperatures ranging from 10 to 20 °C and in various seasons. In the field, [Formula: see text] values in normoxic C. maenas and N. puber were in the low range, 1–3 kPa, independently of temperature, season, and blood haemocyanin concentration. It is concluded that in the field as in the laboratory, [Formula: see text] values mainly in the low range provide a head pressure sufficient to meet O2 needs. The changes that appear to occur in other respiratory variables are discussed in relation to field versus laboratory conditions and temperature differences. The consequences for analysing problems of hypoxaemia in hypoxic waters or situations are discussed.

Download Full-text