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Chapter 2988 Visiting

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    The human body is a precision instrument assembled by nature. No surgery on any part of the body should be taken lightly.

    The blood vessels and nerves in the superficial fascia can be divided into anterior, lateral and posterior groups according to their locations.

    The anterior group includes the trochlear artery and vein and trochlear nerve 2 cm from the midline, and the supraorbital artery and vein and supraorbital nerve 2.5 cm from the midline.  The supratrochlear artery and supraorbital artery are branches of the ophthalmic artery. If they are connected back, they need to be connected to the ophthalmic artery, which is located on the forehead.

    The outer group includes two groups in front of the ear and behind the ear.  The preauricular group has the superficial temporal artery and vein and auriculotemporal nerve, and the postauricular group has the postauricular artery and vein, the facial nerve, the posterior auricular branch of the cervical plexus, the posterior branch of the greater auricular nerve, and the lesser occipital nerve.

    The above content is what Geng, a serious student, saw when he took out the simple neurosurgery notes in his pocket and opened them for on-site review.  For this reason, he looked worriedly at Pan, who was assigned as his first assistant.

    You know, Song Mao has been targeting a few of them, especially Classmate Pan, and is ready to torture them at any time.

    The scalp is so rich in nerves and blood vessels that it is not easy to remember them all.

    Look at the posterior group of nerves and blood vessels.  The posterior group contains the occipital artery, vein and greater occipital nerve.  The greater occipital nerve is the posterior branch of the second cervical nerve. It passes through the deep nuchal muscles and then reaches the greater superior nuchal line. It passes through the trapezius aponeurosis two centimeters from the midline and reaches the cranial roof area.  It is accompanied by the occipital artery and vein.

    The arteries and veins on the top of the skull have as many anastomotic points as a wide net, ensuring that the scalp will not easily become necrotic when a large piece of the scalp is broken.  The nerves on the top of the skull are also densely packed with each other, so when performing local anesthesia on a relatively large area of ??the scalp, one medicine is often not enough, and multiple needles need to be applied widely.

    "Check it first." Song Xuelin said to his assistant.

    Sure enough.  Classmate Geng looked at Classmate Pan anxiously.

    After receiving the instructions, classmate Pan concentrated on finding the anatomical position.

    There are a large group of teachers watching around me, not only neurosurgery, but also a lot of pressure.

    I don¡¯t know if classmate Xie was deliberately helping him to decompress and discussing the patient¡¯s electrocardiogram lines with the cardiothoracic person in front of the monitor.

    "I think it's more like second-degree type II atrioventricular block." Xie Wanying analyzed, "The PR interval is long, and there are signs of qrs wave drop in the middle."

    Second-degree atrioventricular block means that part of the conduction from the atria to the ventricles is interrupted due to some reasons, resulting in the atria not being able to conduct conduction to the ventricles. The qrs wave representing the ventricular electrical activity is delayed or dropped, while the p wave appears in the electrocardiogram.  The curve is relatively normal.

    Because of this situation, although the patient was on the verge of shock, his heart rate was not fast but slow, which attracted the attention of local hospital doctors. They specifically informed the National Association that it was correct for the cardiologist to participate in emergency treatment.

    Clinically, second-degree atrioventricular block is divided into type I and type II. The former is more common, and both can be seen in patients with myocardial infarction.  Considering that this female patient is not young, she is in her forties, and she is inevitably tired from working for a long time. It cannot be ruled out that sudden syncope due to cardiac factors led to the accidental tragedy.  After the neurosurgery is completed, the patient must undergo a careful cardiac examination.

    "Well -" Fu Xinheng didn't have any major objections after hearing her diagnosis and analysis, and then asked her about the next step in diagnosis and treatment, "What do you think needs to be done now?"

    ¡°I think we can take a preventive blood test for potassium and myocardial infarction to see the results.¡± Xie Wanying replied

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