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Kaplan Qbank USMLE



Author18 Posts
  #1

A 50-year-old woman has had progressive dyspnea over the past 2 weeks and constant, sharp chest pain for 4 days. The pain is localized to the center of the chest and is worse while supine. She underwent a right, modified radical mastectomy and adjuvant chemotherapy for breast cancer 3 years ago. She has a history of hypothyroidism treated with thyroid replacement therapy. She has smoked one pack of cigarettes daily for 30 years and drinks two ounces of alcohol daily. She is dyspneic and diaphoretic. Her temperature is 37.2 C (99 F), blood pressure is 90/70 mm Hg with a pulsus paradoxus of 20 mm Hg, pulse is 110/min, and respirations are 28/min. Examination shows jugular venous distention to the angle of the mandible. The liver span is 14 cm with 4 cm of shifting abdominal dullness. Arterial blood gas analysis on room air shows a pH of 7.50, PCO2 of 30 mm Hg, and PO2 of 70 mm Hg. An x-ray film of the chest shows an enlarged cardiac silhouette with a globular configuration. An ECG shows sinus tachycardia with nonspecific ST-segment changes diffusely. Which of the following is the most appropriate next step in management?

A ) Echocardiography

B ) CT scan of the abdomen

C ) Ventilation-perfusion lung scans

D ) Bronchoscopy

E ) Paracentesis



  #2

yess cardiac tamponade

Edited by Dr_kholioo on 03/09/07 - 05:32 AM

___________________
“We all have great inner power. The power is self-faith. There's really an attitude to winning. You have to see yourself winning before you win. And you have to be hungry. You have to want to conquer.” Arnold Schwarzenegger

  #3

E. Cardiac tamponade due to pericardium metastasis, possibly from breast CA. Note pulsus paradoxus wink

  #4

confusing

  #5

The diagnosis is cardiac tamponade, for sure.The treatment is pericardiocentesis but I think you have to confirm first so go to echo.

  #6

The diagnosis is pericardial effuion which is complicated by pericarditis (sharp pain and ST changes) , te diagnosis is confirmed by chest xray and ECG so the next step is to do pericardiocentesis to relieve the pressure.

___________________
If u want to do something, do it today as there is no tomorrow.

  #7

E ) Paracentesis

___________________
The Key to Succeed is Patience.

  #8

noway effusion has no cardiac tamponade

___________________
“We all have great inner power. The power is self-faith. There's really an attitude to winning. You have to see yourself winning before you win. And you have to be hungry. You have to want to conquer.” Arnold Schwarzenegger

  #9

It's cardiac tamponade -not only effusion as there's pulsus paradoxus which go with tamponade -..

I guess we still have to confirm it first by echo,


___________________
I will not say I failed 1000 times.. I will say that I discovered there are 1000 ways that can cause failure ..

  #10

Echo ,


  #11

A ) Echocardiography


  #12

He is distressed so paracentesis first

___________________
The Key to Succeed is Patience.

  #13

Cardiac tamponade is clinical diagnosis, so if u r sure go for paracentesis.

___________________
If u want to do something, do it today as there is no tomorrow.

  #14

with effusion there is pulsus paradoxus too , so go for echo and then paracentesis at the same time , it is not super emergency to go for paracentesis without echo

but in temponade it is , donot waste a min in any investigation


  #15

if it was pericardiocentesis i would take it
since it is not offered so A echo
but not e at all
who cares for the ascites now?

  #16

i'ld go with A

  #17

robin082006 wrote:
He is distressed so paracentesis first


But the respiratory distress is due to cardiac tamponade, right? Why do paracentesis first to remove some ascites?

  #18

well i think ppl have mistaken paracentesis with pericardiocentesis...so paracentesis is wrong so echo would be right










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