Chapter 282 Exchange for Intermediate Card!

So the question is, how to judge whether this p wave is interference?

Lu Chen thought of the "Einthoven" triangle.

The electrocardiogram was invented by Professor Einthoven. He named the recorded electrocardiogram wave pqrst wave, and this naming method is still used today.

Through the principle of "Einthoven's" triangle, we can determine whether the p wave is interference!

"It's time for it to come out and clean up the scene!" Lu Chen thought to himself.

After going through the "Einthoven" triangle model, Lu Chen came to a conclusion.

In this second picture, there is really interference!

It is precisely because of the interference that these small p's appear.

Among them, lead iii is absent, indicating that the interference comes from the left upper limb.

Therefore, how to check for interference is also an important part of the electrocardiogram!

Because it is very easy to be interfered when doing an electrocardiogram, and sometimes the interference is so perfect, then the "Einthoven" triangle will show its importance at this time!

After Lu Chen used the "Einthoven" triangle to clean up these small p's, things became very simple!

The overall heart rhythm is still a junctional escape rhythm.

From the overall macroscopic view, the three electrocardiograms are consistent with the diagnosis of junctional escape rhythm.

When Lu Chen focused his attention on the single lead ii again, he found that the lead interval was fixed.

He immediately considered a diagnosis - complete junctional repetitive beat rhythm!

Repetitive beats, also known as repetitive heart rhythms, refer to the impulse emitted from a certain chamber of the heart that depolarizes that chamber, and then the impulse is conducted to stimulate the contralateral chamber.

At the same time, the conduction direction of the excitement may suddenly reverse and conduct in the opposite direction, causing the cardiac chamber where the original excitement originated to be excited again, an electrical phenomenon in which the heart is excited again.

…

Lu Chen also discovered something more interesting.

In this electrocardiogram, the association interval between sinus rhythm and atrial premature syndrome, and the association interval between sinus rhythm and atrial premature syndrome after potassium recovery, are exactly the same, both are 540ms!

What does this mean?

This further illustrates that the regular pair-to-pair combination with an inverse p in the middle is not atrial-premature bigeminy, but a junctional repetitive beat, which is more reasonable.

In addition, comparing the electrocardiogram before and after blood potassium recovery, the p wave in lead ii is consistent with this p wave, both positive and negative, so there is still an escape beat in this electrocardiogram - a captured heart rhythm!

After analyzing it now, this section of the second electrocardiogram is ready to come out.

Its final answer is, junctional escape rhythm + complete junctional repetitive beat bigeminy + escape-capture rhythm + premature atrial contraction with poor conduction.

…

When Lu Chen sent the final diagnosis of the second electrocardiogram to the group, everyone in the group was shocked and at the same time admired Lu Chen in their hearts.

Who would have thought that part of the p wave and reverse p wave in the electrocardiogram is interference? !

This interference waveform looks no different from a normal p wave.

"After applying the Einthoven triangle, we can eliminate these interferences."

Lu Chen re-edited the electrocardiogram in the group and marked out all the interfering waveforms so that everyone could see it clearly.

After removing the interference waves, although this electrocardiogram is still difficult to interpret, it is not an unsolvable figure!

Fan Zhiping was amazed at Lu Chen's answer in his rental house.

He is truly worthy of being called "Professor Lu"!

The interference waveform that no one expected was thought of by Lu Chen!

After everyone in the group received the diagnosis, they also started having rainbow farts.

"As soon as Professor Lu takes action, he will know if there is any..."

"Professor Lu, the director asked me why I was kneeling and looking at my phone."

"Professor Lu Chen is still awesome!"

…

At this time, prompts kept popping up in Lu Chen's system panel.

"Congratulations, I received a +1 thank you from Fan Zhiping!"

"Congratulations, I received a thank you value +1 from He Xi!"

"Congratulations, I received a thank you value +1 from Li Jiaxin!"

"..."

In just a few minutes, Lu Chen's gratitude level skyrocketed again, directly breaking through the 300 mark!

It was eleven o'clock in the evening, but he was not sleepy at all.

With a thought, he summoned the system mall.

"Redeem the electrocardiogram intermediate skill card!"

Ding!

"Congratulations, you have obtained the ECG skill card (intermediate level)."

The intermediate ECG skill card not only contains higher-level ECG-related knowledge, but also includes electrophysiological knowledge.

Lu Chen felt his head heat up, as if countless knowledge poured into his mind.

However, this knowledge has been sealed for the time being, and Lu Chen needs to spend time reading books to understand it.

"Great!" Lu Chen was overjoyed.

After redeeming this intermediate skill card, Lu Chen felt a little more confident about the third round of exams the day after tomorrow.

Otherwise, with his current ability, it would be almost impossible to break through the provincial competition and enter the national competition!

It's already dark now, and everyone else in the dormitory is already asleep.

Lu Chen resisted the urge to get up and read a book, slowly closed his eyes and began to fall asleep...

…

A night of silence.

the next day.

After Lu Chen got up and washed up, he asked for leave from Teacher Li Yao. The reason was naturally to prepare for the third round of exams.

Li Yao received a call from Lu Chen.

"Okay, hand over the patients you are in charge of to Sun Guoguo. You have already achieved a lot in this ECG competition. Do your best and don't push yourself too hard."

"Okay, thank you, teacher."

Lu Chen hung up the phone and first came to the eighth area of ​​the heart to hand over his patients to Sun Guoguo.

Everyone in the eighth area of ​​the heart also knew that Lu Chen would participate in the third round of the competition tomorrow afternoon.

"Junior brother, come on!" Sun Guoguo smiled and said to Lu Chen.

"Lu Chen, when you enter the national competition, I can brag to my classmates!" Fatty Cheng came to Lu Chen.

Jiang Qingyan and Ke Yue on the side also cheered Lu Chen.

However, despite this, everyone did not have much hope for Lu Chen's third round of the competition!

After all, Lu Chen was only ninth in the second round, and the probability of breaking into the top three was pitifully small.

And now the top three are all well-known doctors in the field of electrophysiology in Jinghua, and Lu Chen is just a first-year graduate student.

…

After leaving the Eighth District of the Heart, Lu Chen came to the teaching building, found an empty classroom, and began his journey of learning electrophysiology.

With the super high comprehension ability given by the intermediate skill card of electrocardiogram, Lu Chen found that the electrophysiological knowledge that he had difficulty understanding before has now become easy to understand.

Many problems that he couldn't understand before are now solved!

However, the third round of exams will be held at 2 pm tomorrow.

In less than a day and a half, Lu Chen needs to give full play to the advantages of the intermediate skill card to improve his electrophysiological knowledge!

Lu Chen spent the whole day learning electrophysiology.

At 3 pm the next day.

The third round of the provincial competition of the Huaxia Electrocardiogram Competition officially began!

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