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  IN THIS Article
   Abstract
   Introduction
   Case History
   Discussion
   References
   Article Figures

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CASE REPORT
Year : 2006  |  Volume : 52  |  Issue : 2  |  Page : 136-138

Skin necrosis in a critically ill patient due to a blood pressure cuff


Department of Cardiothoracic Surgery, Blackpool Victoria Hospital, Blackpool, United Kingdom

Correspondence Address:
Mohan P Devbhandari
Department of Cardiothoracic Surgery, Blackpool Victoria Hospital, Blackpool
United Kingdom
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Source of Support: None, Conflict of Interest: None


PMID: 16679680

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  Abstract 

The non-invasive method of blood pressure measurement is regarded as a safe procedure and the reports of any serious complications are rare. We report a unique case of extensive skin necrosis due to an intermittently inflating blood pressure cuff in a 65-year-old critically ill lady following a third time redo mitral valve surgery. A brief review of the literature on complications associated with noninvasive method of measurement of blood pressure is presented along with possible mechanisms of skin injury and ways to avoid it.


Keywords: Skin necrosis, blood pressure cuff


How to cite this article:
Devbhandari MP, Shariff Z, Duncan A J. Skin necrosis in a critically ill patient due to a blood pressure cuff. J Postgrad Med 2006;52:136-8

How to cite this URL:
Devbhandari MP, Shariff Z, Duncan A J. Skin necrosis in a critically ill patient due to a blood pressure cuff. J Postgrad Med [serial online] 2006 [cited 2019 May 19];52:136-8. Available from: http://www.jpgmonline.com/text.asp?2006/52/2/136/25161



  Introduction Top


Non-invasive blood pressure (NIBP) monitoring is regarded as a safe procedure.[1] Recently there has been a rapid increase in its usage to record ambulatory blood pressure (BP). We report the case of a critically ill patient who developed a significant problem with NIBP.


  Case History Top


A 65-year-old female presented with worsening shortness of breath due to severe rheumatic mitral stenosis. She had a history of two previous closed mitral valvotomies done 35 and 25 years ago. Preoperative investigations confirmed severe mitral stenosis with raised pulmonary artery pressure, impaired left ventricular function and left anterior descending coronary artery stenosis.

At surgery, the heart was densely adherent to the pericardium. The dissection required to free the heart from pericardium resulted in a large raw surface. A mechanical mitral valve replacement with a single coronary artery bypass grafting was undertaken. She was weaned off cardiopulmonary bypass supported by ionotropes and an intra-aortic balloon pump (IABP). Hemeostasis was difficult to achieve due to persistent ooze from raw areas. The pericardial cavity was packed with swabs and the chest left open, except the skin.

Continued bleeding, marked hemodynamic instability, hypotension and low cardiac output complicated her post-operative course. Despite IABP and additional ionotropic support with admistration of adrenaline 1.66 mg/min, dopamine 4 mg/Kg/min and noradrenaline 4 mg/min, her mean arterial pressure and mean systolic BP were 65 mm Hg (range 50 -70 mm Hg) and 96 mm Hg (range 70-110) respectively. The best hemodynamic parameters after optimization of fluid, ionotropes, IABP and vasoconstrictor were C.I. 2.2 L/min/m 2sub , C.O. 3.5 L/min and SVRI 2217 dynes s/cm 5sub /m 2sub . Six hours after her arrival in the intensive care unit, she had to be returned to the operating room for cardiac tamponade that resulted from the bleeding raw surfaces. The chest was formally closed the next day when the bleeding had stopped.

An NIBP (oscillometric method) cuff of appropriate size was applied to the arm and set to inflate every 15 minutes. It was continued on the post-operative night alternately on her left and right arms and was changed approximately at four hourly intervals. On the next day, automatic cycling was changed to occasional inflation on manual instruction.

On the third postoperative day, the skin on the anterior aspect of her arms was found to be discolored. This continued to worsen resulting in full thickness skin necrosis of the anterior aspect of both the arms involving up to two-third of circumference, two days later [Figure - 1]. Additionally, both her great toes, the 4th and 5th toe on right side and 5th toe on left side became gangrenous. The IABP and ionotropes were gradually weaned over several days. A tracheostomy tube was inserted to assist respiratory weaning. A plastic surgery review was made and a plan was made for a split skin graft to the arm. Fortunately the arm wound healed slowly and she did not require skin grafting. The affected toes needed to be amputated. After 25 days in intensive care and two and half months, of rehabilitation in the ward, she was finally discharged and sent home. She has been under follow up for the past six years and has been doing well.


  Discussion Top


Prolonged hypoperfusion due to occlusion of the microcirculation of the skin leads to pressure necrosis, of which bedsores are the best examples.[2] Localized pressure has been reported to be the cause of skin necrosis of other parts of the body such as the bridge of the nose following the use of a continuous positive airway pressure mask for ventilation and penile skin due to a negative pressure device for erectile dysfunction.[3],[4] However skin necrosis due to NIBP has not been described so far in the literature.

In this patient, the NIBP was used to rule out erroneous reading from the arterial line. This was chosen as an alternative to insertion of a new arterial line as it was difficult to cannulate her radial and femoral arteries, which had already been traumatized at earlier attempts to cannulate for IABP monitoring. The NIBP equipment was used as per manufacturer's standard instructions and the sides alternated as recommended. Low cardiac output and critical hypoperfusion combined with the use of ionotropes and vasoconstrictors explain the development of gangrene of the toes on both sides without any external interruption to the blood flow. In this setting of global hypoperfusion, brief but repeated mechanical compressions damaged the microcirculation and led to tissue necrosis. Our case emphasizes the message from previous reports that reliance should not be placed on NIBP in a patient with shock. In such a context one should only rely on an appropriately placed invasive monitoring line. It is unhelpful and may even prove to be hazardous to employ NIBP for this purpose.

Compartment syndrome is a well-documented complication of NIBP.[5],[6] This is however, unlikely in our patient, as the neuromuscular function of the arm was intact. Possibility of a local allergy to the cuff material was considered, but this could not explain the absence of the lesions preoperatively when her blood pressure was measured using a similar cuff. Drug allergy could not explain the condition, as the lesions were very much localized. Furthermore, the circumferential position of the lesions in the mid-arm exactly matched the sites where the cuffs had been applied. The other possibility of chemical burns due to povidone iodine used for surgical preparation was ruled out after the staff were interviewed. Another remote possibility was friction. Friction usually causes blisters at the sites of adhesive plasters and tends to be superficial and so it is an unlikely explanation in this case.

NIBP monitoring is considered to have an excellent record of safety. Reported complications of NIBP are rare and consequently there is limited awareness among clinicians. Compartment syndrome requires prompt surgical intervention.[5] Patients on anticoagulants are at an increased risk of hematoma formation and compartment syndrome with NIBP.[7] NIBP cuffs are also known to be a source of infection.[8] Other reported complications include compressive neuropathy, petechial rash, thrombophlebitis, venous stasis, ecchymoses and phlebitis.[5],[9],[10]

Previous reports have pointed out that excessive machine cycling, device malfunction and continuous pressure of a firmly applied deflated cuff are contributory factors.[6] In the presence of arrhythmia, movement artefacts (muscular straining, shivering, movement disorder) or shock, multiple and prolonged inflations may be needed for one successful reading, greatly increasing the risk of this complication.[6],[11] Suggestions to avoid this problem are to avoid wrapping cuff too tightly and to avoid bony prominences. Anesthetized patients and those at extremes of age need special attention. The sites should be alternated and regularly inspected for any evidence of bruising or petechie. The cuff cycling should be kept to the minimum necessary frequency consistent with satisfactory monitoring. The role of alternative methods of blood pressure measurement such as Finapres remains uncertain, as their reliability and accuracy are not yet established.[12]

We would like to conclude that even innocuous noninvasive clinical monitoring of blood pressure with a NIBP cuff can cause potentially serious skin necrosis in a critically ill patient with compromised hemodynamics. Appropriate precautions should be taken to prevent this complication.

 
  References Top

1.American College of physicians. Automated ambulatory blood pressure devices and self-measured blood pressure monitoring devices their role in the diagnosis and management of hypertension. Ann Intern Med 1993;118:889-92.  Back to cited text no. 1  [PUBMED]  [FULLTEXT]
2.Young JB, Dobrzanski S. Pressure sores: epidemiological and current management concepts. Drugs Age 1992;2:42-57.   Back to cited text no. 2  [PUBMED]  
3.Smurthwaite GJ, Ford P. Skin necrosis following continuous positive airway pressure with a facemask. Anaesthesia 1993;48:147-8.  Back to cited text no. 3  [PUBMED]  
4.Meinhardt W, Kropman RF, Lycklama A, Nijeholt AA, Zwartendijk J. Skin necrosis caused by use of negative pressure device for erectile impotence. J Urol 1991;146:1618-9.  Back to cited text no. 4    
5.Vidal P, Sykes PJ, Saughnessy OM, Craddock K. Compartment syndrome after use of an automatic arterial pressure monitoring device. Br J Anaesth 1993;73:902-4.  Back to cited text no. 5    
6.Baetz MD, Pylypchuk G, Baetz M. A complication of ambulatory blood pressure monitoring. Ann Intern Med 1994;121:668-9.  Back to cited text no. 6  [PUBMED]  [FULLTEXT]
7.Alford JW, Palumbo MA, Barnum MJ. Compartment syndrome of the arm: a complication of noninvasive blood pressure monitoring during thrombolytic therapy for myocardial infarction. J Clin Monit Comput 2002;17:163-6.  Back to cited text no. 7  [PUBMED]  [FULLTEXT]
8.Base-Smith V. Nondisposable sphygmomanometer cuffs harbor frequent bacterial colonization and significant contamination by organic and inorganic matter. AANA J 1996;64:141-5.   Back to cited text no. 8  [PUBMED]  
9.Creevy PA, Burris JF, Mroczek WJ. Phlebitis associated with noninvasive 24-hour ambulatory blood pressure monitor. JAMA 1985;254:2411.  Back to cited text no. 9    
10.Lin CC, Jawan B, de Villa MV, Chen FC, Liu PP. Blood pressure cuff compression injury of the radial nerve. J Clin Anesth 2001;13:306-8.  Back to cited text no. 10  [PUBMED]  [FULLTEXT]
11.Sutin KM, Longaker MT, Wahlander S, Kasabian AK, Capan LM. Acute biceps compartment syndrome associated with the use of a noninvasive blood pressure monitor. Anesth Analg 1996;83:1345-6.  Back to cited text no. 11  [PUBMED]  [FULLTEXT]
12.Langewouters GJ, Settels JJ, Roelandt R, Wesseling KH. Why use Finapres or Portapres rather than intra-arterial or intermittent non-invasive techniques of blood pressure measurement? Med Eng Technol 1998;22:37-43.  Back to cited text no. 12  [PUBMED]  


    Figures

[Figure - 1]

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Online since 12th February '04
2004 - Journal of Postgraduate Medicine
Official Publication of the Staff Society of the Seth GS Medical College and KEM Hospital, Mumbai, India
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