BIOS 255 Week 7 Case Study-Carbon Monoxide Poisoning
36 vistas 0 veces vendidas
Grado
BIOS 255.
Institución
Chamberlain College Of Nursing
BIOS 255 Week 7 Case Study-Carbon Monoxide Poisoning
1.Question: With respect to hemoglobin loading, please explain the relationship between binding of oxygen (O2) and carbon monoxide (CO) to the hemoglobin molecules.
2.Question: During the ambulance ride, a pulse oximeter showed 100% O2 satu...
bios 255 week 7 case study carbon monoxide poisoning
Escuela, estudio y materia
Chamberlain College Of Nursing
BIOS 255.
Todos documentos para esta materia (9)
Vendedor
Seguir
Smartsolutions
Comentarios recibidos
Vista previa del contenido
1
Week 7 Case Study: Carbon Monoxide Poisoning
BIO255: Anatomy & Physiology III w/Lab
, 2
1. With respect to hemoglobin loading, please explain the relationship between the
binding of oxygen (O2) and carbon monoxide (CO) to the hemoglobin molecules.
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in
the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules. From the
molecular weight of Hb, one can calculate that 1 g of Hb can combine with 1.39 ml of
oxygen. Meanwhile, carbon monoxide is dangerous for several reasons. When CO binds
to one of the binding sites on hemoglobin, the increased affinity of the other binding sites
for oxygen leads to a left shift of the oxygen dissociation curve. Thus, it interferes with
the unloading of oxygen in the tissues. Carbon monoxide prevents the loading of oxygen
due to competition for the same binding sites, thereby showcasing how they relate. This
shift prevents oxygen unloading in peripheral tissue, and therefore the oxygen
concentration of the tissue is much lower than normal. Thus, in the presence of carbon
monoxide, a person can experience severe tissue hypoxia while maintaining a normal
PaO2. For instance, patients with Carbon-monoxide poisoning experience headaches,
malaise, altered mental status, shortness of breath, seizures, or cherry red lips.
2. During the ambulance ride, a pulse oximeter showed 100% O2 saturation. Why
is that different from the 72% measured at the hospital?
The pulse oximeter uses a cold light source that shines a light through the fingertip,
making the tip appear red. By analyzing the light source that passes through the finger,
the device can determine the percentage of oxygen in the red blood cell. Thereby, in
cases of carbon monoxide poisoning, it shows 100% Oxygen saturation because the
device cannot distinguish between the color of carboxyhemoglobin and oxyhemoglobin.
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable.
Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Smartsolutions. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for 8,10 €. You're not tied to anything after your purchase.
