Medicine College

3.
Which structures in the
eye does the drug act on to mydriasis?


Answers

Answer 1

Answer:

The excitation of the radial fibres of the iris which increases the pupillary aperture is referred to as a mydriasis.

Answer 2

The structures in the eye that the drug acts on to cause mydriasis are the radial muscles of the iris and the dilator pupillae muscle. Mydriasis refers to the dilation of the pupil and is the opposite of miosis, which is the constriction of the pupil.

Drugs that cause mydriasis are known as mydriatics. The most common mydriatic drugs include atropine, phenylephrine, and tropicamide. These drugs are used in ophthalmology to perform eye examinations or to treat certain eye conditions.The drug atropine acts by blocking the action of the parasympathetic nervous system on the iris.

The parasympathetic nervous system normally causes the circular muscle of the iris to contract, resulting in miosis. By blocking this action, atropine allows the radial muscles to contract, causing the pupil to dilate.Phenylephrine works by stimulating the dilator pupillae muscle, which causes the pupil to dilate. Tropicamide works by blocking the action of the parasympathetic nervous system on the iris, similar to atropine.

However, tropicamide has a shorter duration of action than atropine and is therefore often used for diagnostic purposes. Mydriasis can also be caused by other factors such as injury, inflammation, or certain medical conditions. However, the use of mydriatic drugs is the most common method for inducing mydriasis in ophthalmology.

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Related Questions

Which age group discussed in Chapter 5 have you communicated with the most?
Describe two communication techniques in Chapter 5 you can apply when communicating with this age group.
Explain the therapeutic responses the medical professionals used in the case study from the textbook about the age group you chose.

Answers

The communication techniques that are important when communicating with adults include seeking clarifications and listening.

What is communication?

It should be noted that communication simply means the exchange of information from a sender to a receiver through a medium.

The communication techniques that can be used to communicate with the age group include giving recognition, listening, seeking clarifications, etc.

Therapeutic responses are described as  to the actions and interventions undertaken by medical professionals in order to promote healing, alleviate symptoms, and improve the overall well-being of their patients and includes:

Providing medical treatmentOffering emotional support

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An infertile couple seeks the assistance of a clinic when they are unable to conceive a child. Through in vitro fertilization, (IVF), their dream is realized when they give birth to a baby girl. After some time passes, the baby's features appear to be Asian (the couple is white). Their worst nightmare begins when they learn that the husband is not the biological father of the child. The clinic is ordered to reveal the identity of all donors who could potentially be the father of the child. Whose rights are superior? the child, the mother, the unknown father? As a malpractice case, how do you begin to assess damages?

Answers

I can only provide some general insights, so it's important to note that I am not a lawyer, and legal cases can vary depending on jurisdiction and specific circumstances. In a situation where the biological father of a child born through in vitro fertilization (IVF) is different from the intended father, complex legal and ethical considerations arise.

1. Rights of the Child: The rights of the child should be a primary concern in such cases. The child has the right to know their genetic identity and biological origins, as this information can be crucial for their well-being and understanding of their own identity. Establishing the truth about their parentage can have significant emotional, psychological, and medical implications for the child. Therefore, the child's rights to genetic information and the truth about their parentage may be considered paramount.

2. Rights of the Mother: The mother's rights may include the right to privacy and reproductive autonomy. However, in a case where there is a discrepancy between the intended father and the biological father, these rights may be weighed against the child's right to know their genetic identity. The extent of the mother's rights and the legal obligations towards disclosing the information can vary based on local laws and specific contractual agreements between the parents and the IVF clinic.

3. Rights of the Unknown Father: The rights of the unknown biological father may also come into consideration. However, since the identity of the biological father is typically unknown, it may be challenging to assess or protect his specific rights. The focus is often on the rights of the child and the legal obligations of the IVF clinic to provide the necessary information to establish the child's parentage accurately.

Assessing damages in a malpractice case related to IVF can involve a variety of factors, such as emotional distress, psychological harm, breach of contract, professional negligence, and any associated medical costs. Legal experts specializing in family law or medical malpractice would typically be involved in evaluating the specific circumstances of the case, the applicable laws, and determining the appropriate course of action for assessing damages.

It is crucial to consult with a legal professional who specializes in reproductive law, family law, or medical malpractice to understand the specific legal principles and regulations that apply to the jurisdiction where the case is being considered. They can provide accurate and tailored advice based on the relevant laws and precedents in that jurisdiction.
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