Understanding Respiratory Distress Syndrome in Infants
Respiratory Distress Syndrome (RDS)
Respiratory distress syndrome (RDS) is the most common cause of respiratory failure in preterm infants. Over the past several decades, a number of names have been used to identify infants with RDS. A common thread running through most names is the term “Respiratory Distress,” which characterizes an immature lung disorder in a preterm infant caused by inadequate pulmonary surfactant.
Names Used to Identify RDS
- Infant respiratory distress syndrome
- Idiopathic respiratory
Theories and Evidence of Biological Evolution
Theories of Biological Evolution
Punctuated Equilibrium (PUNT): The theory suggests that there are certain periods of intense speciation which interrupt the equilibrium of normal adaptation.
Fixism (FIXIST): Upholds the idea that species on Earth were created by God.
Catastrophism (CATAS): Proposed by Cuvier, maintained that fossils were the remains of extinct species that had died out as a result of catastrophes.
Evolutionism (EVOL): Maintains that species undergo a process of transformation which
Read MoreNervous System: Components, Functions & Health
Components of the Nervous System
The nervous system detects and interprets external and internal stimuli and produces the necessary responses. It is made up of:
- Neurons: Generate and transmit nerve impulses. They are classified by function:
- Sensory neurons: Send information to the CNS, where it’s interpreted, and responses are made.
- Motor neurons: Carry responses from the CNS to the effectors, causing muscle contractions or gland secretions.
- Relay neurons: Connect sensory and motor neurons.
- Glial cells:
Diaphragm: Anatomy, Function, and Attachments
The diaphragm forms the floor of the rib cage. It is a very wide, flat muscle that separates the chest wall from the abdomen. It is shaped like a dome, whose base corresponds to the lower chest girth and is wider transversely than anteroposteriorly. The convexity is related to the thoracic viscera and the concavity with the abdominal viscera.
Besides the lower attachment, the plan will lower the chest up and down, tilt the steering wheel, and move front to back.
The diaphragmatic dome rises a bit
Read MoreEcosystem Dynamics: Natural vs. Artificial Changes
Changes in Natural Ecosystems
Ecosystems are dynamic structures that vary over time, tending towards an equilibrium state with minimal change. For an ecosystem to be in equilibrium, at least two conditions must be met:
- Environmental factors must remain stable.
- The number of individuals in the population should remain relatively constant.
The state of equilibrium in an ecosystem is an ideal, as all ecosystems are subject to internal and external changes.
These changes may be due to various causes and
Read MoreNitrites and Nitrates in Food: Uses, Risks, and Safety
Nitrites and Nitrates: E-249 Potassium nitrite (KNO2), E-250 Sodium nitrite (NaNO2), E-251 Sodium nitrate (NaNO3), E-252 Potassium nitrate (KNO3)
1. Nitrates and Nitrites: Growth Inhibitors
Nitrates and nitrites are potent inhibitors of the growth of Clostridium botulinum, a bacterium that produces botulinum toxin, which is extremely toxic. A dose of 0.1 to 1 millionth of a gram can be fatal, although the toxin is destroyed by heat. This toxin causes botulism, a potentially fatal disease.